3D鎵撳嵃濡備綍瑙ｅ喅閾搁€犻珮鎶ュ簾鐜囬棶棰橈細闈╂柊閾搁€犲伐鑹猴紝鎻愬崌鍝佽川涓庢晥鐜?/a>鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> As the cornerstone of industrial manufacturing, the foundry industry has long faced a number of deep-rooted challenges. Among them, high scrap rates are a "hidden cost" that not only means direct waste of raw materials, but also leads to long product development cycles, high rework costs, and the loss of valuable market opportunities. For some complex structure, high technical requirements of the castings, the yield of the traditional process will drop dramatically. This predicament has prompted the industry to urgently seek a technological change that addresses the root causes of the problem. In this context, additive manufacturing (commonly known as 3D printing) with its unique advantages for the traditional casting industry to provide a subversive whole chain digital solutions for the transformation and upgrading of the industry provides a new path.

Chapter 1: Deep Dive: The Root Challenge of Traditional Casting Defects

1.2 The traditional mold manufacturing "high cost" and "low efficiency" dilemma

Another core pain point of the traditional casting process is its mold manufacturing process. Traditional wood or metal core box manufacturing is a labor-intensive, highly skilled worker-dependent process with long lead times and significant costs. Any minor design change means that the mold needs to be rebuilt, resulting in high additional costs and weeks or even months of waiting time.

This over-reliance on physical molds also fundamentally limits the design freedom of castings. Traditional mold-making processes are unable to mold complex internal runners and hollow structures in one piece, which must be disassembled into multiple independent sand cores and then assembled by complex tooling and labor. ². This process limitation forces designers to compromise and sacrifice part performance for manufacturability, such as simplifying cooling channels to accommodate drilling processes that do not allow for optimal cooling.

To summarize, the high scrap rate of traditional casting is not an isolated technical problem, but a product of its core processes. The traditional "physical trial and error" mode makes the foundry in the discovery of defects, need to go through a long process of mold modification and retesting, which is a high-risk, inefficient cycle. 3D printing's revolutionary value is that it provides a "moldless" solution, fundamentally reshaping the entire production process, will be the traditional "physical trial and error" mode, will be the traditional "physical trial and error" mode, will be the traditional "physical trial and error" mode, will be the traditional "casting" high scrap rate is not an isolated technical problem, but its core process products. The revolutionary value of 3D printing is that it provides a "moldless" solution that fundamentally reshapes the entire production process, transforming the traditional "physical trial-and-error" model into a "digital simulation validation" that puts the risk in front of the process, thus eliminating most of the causes of scrap at the source.

2.1 Moldless production: eliminating the root causes of obsolescence

The core advantage of 3D printing is its "moldless" production method, which allows it to bypass all of the mold-related challenges inherent in traditional casting, thus radically reducing scrap rates.

Directly from CAD to sand mold. Binder Jetting in Additive Manufacturing is the key to making this happen. It works by precisely spraying liquid binder onto thin layers of powder (e.g. silica sand, ceramic sand) from an industrial-grade printhead based on a 3D CAD digital model. By bonding layer by layer, the 3D model in the digital file is constructed in the form of a solid sand mold or sand core. This process completely eliminates the need to rely on physical molds. Because there is no need for lengthy mold design and manufacturing, the mold-making cycle can be shortened from weeks or even months to hours or days, enabling "print-on-demand" and rapid response to design changes, dramatically reducing up-front investment and trial-and-error costs.

One-piece molding and complex structures. 3D printing's layered manufacturing approach gives unprecedented design freedom. It is able to mold complex sand cores that would traditionally have to be split into multiple parts, such as the meandering runners inside an engine, into a single monolithic piece. Not only does this simplify the casting process, but more importantly, it completely eliminates the need for core assembly, bonding and misalignment, thus eradicating common defects such as sand entrapment, dimensional deviations, and misshaping caused by such issues.

Digital Simulation and Design. During the digital design phase prior to 3D printing, engineers can use advanced Finite Element Analysis (FEM) software to perform accurate virtual simulations of the pouring, make-up shrinkage and cooling processes. This makes it possible to anticipate and correct potential defects that could lead to porosity, shrinkage or cracks before actual production. For example, by simulating the flow of the liquid metal in the runners, the design of the pouring system can be optimized to ensure smooth filling and effective venting. This digital foresight greatly improves the success rate of the first trial run and guarantees casting yields at the source.

Excellent sand properties. 3D printed sand molds, due to their layer-by-layer construction, can achieve uniform densities and air permeability that are difficult to achieve with traditional processes. This is crucial for the casting process. Uniform gas permeability ensures that gases generated inside the sand mold can escape smoothly during the pouring process, significantly reducing porosity defects caused by poor venting.

Cooling with shape. Conformal cooling technology is another revolutionary application of 3D printing in the field of casting molds. Mold inserts manufactured through metal 3D printing have cooling runners that can be designed to exactly mimic the surface contours of the casting. This achieves fast, uniform cooling, significantly reducing deformation and shrinkage due to uneven shrinkage, thus dramatically reducing the scrap rate. According to data, molds with follow-through cooling can reduce injection cycle times by as much as 70%, while significantly improving product quality.

From "physical trial and error" to "digital foresight". The core contribution of 3D printing is to transform the traditional foundry model of "trial and error" into "anticipatory manufacturing". It enables foundries to perform numerous iterations in a digital environment in a cost-effective manner, which is a fundamental shift in mindset and business process. This "hybrid manufacturing" model makes 3D printing easier to adopt by traditional foundries and enables the most efficient production. For example, 3D printing can be used to create the most complex and error-prone sand cores, and then combined with sand molds made using traditional methods to "build on the strengths".

Chapter 3: SANTI TECHNOLOGY: A Digital Engine to Empower the Foundry Industry

As a pioneer and leader in the field of additive manufacturing in China, 3DPTEK provides strong "hard power" support for the foundry industry with its self-developed core equipment.

The company's core product lines are3DP Sand Printerthat highlights its leadership in technology. Flagship devices3DPTEK-J4000With an extra-large molding size of 4,000 x 2,000 x 1,000 mm, it is highly competitive on a global scale. This extra-large size allows large, complex castings to be molded in one piece without the need for splicing, further eliminating potential defects caused by splicing. At the same time, for example

3DPTEK-J1600PlusDevices such as these offer high accuracy of 卤0.3 mm and efficient printing speeds, ensuring that superior quality is achieved while producing quickly.

In addition, SANTI Technology'sSLS (Selective Laser Sintering) Equipmentseries, such asLaserCore-6000The machines are also excellent in the field of precision casting. This series of equipment is particularly suitable for the manufacture of wax molds for investment casting, providing a more accurate solution for high-end, fine parts in aerospace, medical and other fields.

It is worth mentioning that SANDI Technology is not only an equipment supplier, but also an expert in material and process solutions. The company has developed more than 20 binders and 30 material formulations, compatible with cast iron, cast steel, aluminum, copper, magnesium and other casting alloys. This ensures that its equipment can be seamlessly integrated into a wide range of casting applications, providing customers with comprehensive technical support.

The company offers a "one-stop" turnkey service from design and 3D printing to casting, machining and inspection. This vertically integrated model greatly simplifies the customer's supply chain management, reduces communication costs and risks, and allows the foundry to focus on its core business.

21. The successful application of this technology in the field of new energy vehicles has proved its significant advantages in the production of high-performance, complex structure castings.

On the otherIndustrial pump bodyIn the case of SANDI, SANDI adopted the hybrid manufacturing model of "3DP outer mold + SLS inner core". This complementary strategy shortened the production cycle by 80%, and at the same time improved the dimensional accuracy of the castings to CT7 level, which perfectly proved the powerful effect of the hybrid manufacturing mode.

The joint venture project with Xinxin Foundry provides the strongest business argument. By introducing 3D printing technology, the foundry achieved a turnover increase of 1,35%, doubled its profitability, halved its lead time and reduced its costs by 30%. This series of quantitative data provides irrefutable proof of the return on investment of 3D printing technology in the foundry industry.

The following table visualizes how 3D printing can address the pain points of the foundry industry on both a technical and business value level:

Casting defects or pain points	Causes and limitations of traditional crafts	3D Printing Solutions and Value
stoma	Poor mold venting; liquid metal entrapped in gas	Uniform, controlled sand permeability; digital simulation optimizes pouring system
shrinkage	Uneven cooling; inadequate retraction	Predictive optimization by numerical simulation; uniform cooling by shaped cooling channels
Sandwich, Mis-shape	Multi-core assembly, bonding and misalignment; parting face fit errors	One-piece molding of complex sand cores eliminates assembly; no physical parting surfaces required
High molding costs	Requires physical molds, highly skilled labor, long lead times	Mold-less production; print directly from CAD files, manufacture on demand
Inefficiency and long lead times	Long mold making; repeated trial and error	Reduced cycle time of 80%; rapid iterative design possible; print on demand
Increased business value	Low margins and erratic delivery	Turnover up 1,35%, margins doubled; costs down 30%

Chapter 4: Looking to the future: digitalization and sustainability in the foundry industry

3D printing technology is leading the foundry industry from the traditional "manufacturing" to "smart manufacturing" fundamental transformation. According to the relevant report, the scale of China's additive manufacturing industry continues to grow at a high rate, and in 2022 it will exceed RMB 32 billion. This data clearly shows that digital transformation has become an irreversible industry trend.

In the future, 3D printing will be deeply integrated with artificial intelligence (AI), IoT and other technologies to achieve full automation and intelligent management of production lines. Foundries can use AI algorithms to optimize casting parameters and IoT sensors to monitor the production process in real time, thus further improving yield rates and production efficiency.

In addition, the unique advantages of 3D printing in realizing complex lightweight design will help automotive, aerospace and other downstream industries to improve product performance and reduce energy consumption, which is a perfect fit for the requirements of global sustainable development. 3D printing's on-demand production mode and extremely high material utilization (can be recycled more than 90% unbonded powder), also significantly reduces the generation of waste, for the casting industry to bring the environmentally friendly development path for the foundry industry.

concluding remarks 3D printing is not the end of casting, but its innovator. It gives the traditional foundry industry unprecedented flexibility, efficiency and quality assurance through its two core advantages of "moldless" and "digital". It enables foundries to free themselves from the plight of high scrap rates and enter a new era of greater efficiency, competitiveness and embrace of innovation. For any foundry seeking to stand out in a competitive market, embracing 3D printing technology, represented by SanDi Technology, is no longer an optional choice, but a necessary path to the future.

3D鎵撳嵃濡備綍瑙ｅ喅閾搁€犻珮鎶ュ簾鐜囬棶棰橈細闈╂柊閾搁€犲伐鑹猴紝鎻愬崌鍝佽川涓庢晥鐜?/a>鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> //cqtmcj.com/en/blogs/casting-shrinkage-cavity-issues/ Thu, 21 Aug 2025 08:44:33 +0000 //cqtmcj.com/?p=2374 Is casting shrinkage your problem? This article provides an in-depth analysis of how industrial 3D printing can solve the casting shrinkage problem from the root by optimizing the internal structure and shape-following cooling by virtue of the freedom of mold-free design, and achieve a comprehensive improvement in cost, time and quality.

3D鎵撳嵃濡備綍閫氳繃浼樺寲鍐呴儴缁撴瀯鏉ユ秷闄ら摳浠剁缉瀛?/a>鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> Shrinkage, as hidden in the casting of the internal "dark wound", is the traditional casting process in a common, difficult to eradicate defects. It not only affects the beauty of the casting, but also directly threatens its strength and mechanical properties. When the molten metal in the solidification process volume contraction, and do not get enough liquid metal supplement, it will be in the casting or the surface of the formation of voids, that is, we often say shrinkage or shrinkage! The  

Eliminating shrinkage holes has always been a complex challenge for foundries and engineers, with traditional methods often relying on experience and adjusting mold design, pouring systems and cooling processes through trial and error . However, with the advent of additive manufacturing technologies, especially industrial-grade sand 3D printing, casting design and production have been revolutionized, providing unprecedented new ways to completely solve shrinkage problems.  

Compensate for shrinkage deficiencies: As a casting solidifies and shrinks, it needs to be constantly replenished with liquid metal through the pouring system and riser. If the replenishment channels are not properly designed or are insufficient, the liquid metal cannot be transported to the areas most in need of replenishment, resulting in the creation of voids. 聽

Uneven solidification: If the cooling rate of different areas of the casting is not consistent, the heat is difficult to effectively disseminate, the formation of hot joints (hot spot). These hot spots are the last solidified areas, when the surrounding metal has solidified, they lack the liquid metal supplement, very easy to form shrinkage holes. 聽

In conventional casting, molds and cores are manufactured with physical tools whose geometry is limited by machinability and releaseability. For example, the holes drilled for cooling water paths can only be straight lines. . This makes it difficult for engineers to design complex, curved make-up shrinkage channels or follow-through cooling channels inside the mold to precisely control the solidification process, thus increasing the risk of shrinkage defects The  

The core strengths of industrial sand 3D printers areDesign Freedomcap (a poem)No mold productionIt prints sand molds and cores layer by layer directly from 3D CAD files. . This characteristic radically breaks through the geometric limitations of conventional processes and provides several powerful means of eliminating shrinkage as follows:  

Option 1: Optimize the fill and contraction channel, precise infusion

Using 3D printing technology, engineers can design the optimal make-up shrinkage system inside the mold without having to consider machinability.

• Integrated pouring system: Traditionally, the sprue system (including the sprue and riser) has to be fabricated and assembled separately. 3D printing allows the entire sprue system, the filler riser and the mold itself to be printed in one piece. This integrated design ensures a seamless connection and precise alignment of the channels, greatly reducing the risk of shrinkage failure due to assembly errors. 聽
• Design of precise filler risers: 3D printing allows the precise design and printing of shrinkage risers above the hot joint areas of the casting, ensuring a constant flow of molten metal to fill the void created by solidification shrinkage. It has been shown that overflow risers above the casting can effectively vent gases, thus reducing porosity defects in the casting. 聽
• Eliminate undercutting and complex structural barriers: In traditional processes, complex undercuts and internal passages require multiple cores to be assembled, which not only increases assembly errors, but can also easily lead to dislodged or misaligned cores. 3D printing allows multiple individual cores to be combined into a single, complex, integrated core, eliminating the need for assembly altogether, and improving the accuracy and quality of the casting. 聽

Option 2: Conformal cooling for uniform solidification

For the molds themselves, 3D printing can be equally revolutionary. ByConformal cooling(conformal cooling) technology, which allows the design of cooling channels inside the mold that match the surface contour of the casting. The  

• Principle: Conventional cooling channels are drilled in straight lines and do not cover all the areas that need to be cooled, resulting in uneven temperatures in the mold . Conformal cooling, on the other hand, uses 3D printing to integrate curved, serpentine cooling waterways into the mold so that they fit snugly on the surface of the casting . 聽
• Advantage: This design results in more uniform cooling and significantly reduces the risk of localized overheating of the mold. A more balanced temperature gradient means that the solidification process is more controlled, radically reducing the formation of hot joints and thus preventing shrinkage. It has been demonstrated that the use of a form-following cooling mold reduces the temperature variation during mold cooling to as low as 18掳C, thus significantly reducing the risk of casting warpage. 聽

The  

• Casting simulation software: Engineers can use casting simulation software (e.g. Cimatron) to simulate the flow and solidification of molten metal. If the simulation results show a risk of shrinkage, the mold design can be quickly adjusted, e.g. by changing the location of the sprue or riser, and then tested virtually again. 聽
• Rapid prototyping and iteration: If a physical prototype is required, 3D printing can print a mold or core in hours or days. This allows engineers to iterate and validate designs multiple times at a fraction of the cost and speed. This agile development model is unimaginable in traditional casting, which requires expensive mold making and long waiting times. 聽

Reduce costs: 3D printing significantly reduces production costs by eliminating the expensive physical mold and tooling manufacturing aspects . According to research, 3D printing can save up to 50%-90% compared to traditional methods . 聽

Shorten the delivery time: Mold making time has been reduced from weeks or even months to hours, allowing companies to respond more quickly to market demands . In one case, a company was able to reduce lead times by 9 weeks by using a sand 3D printer. 聽

Reduce scrap rates: The accuracy and consistency of the molds have been greatly improved, reducing casting defects due to human error or mold wear, thus significantly reducing scrap rates. 聽

Simplify the process: Consolidating multiple parts into a single integrated component simplifies complex assembly processes and reduces reliance on highly skilled labor. 聽

Conclusion: 3D printing - a "cure" for the foundry industry

Casting shrinkage is not an isolated technical problem, but the traditional casting process in the face of complex design and high-precision requirements of the systematic challenges exposed. Industrial sand 3D printers, with their unique technological advantages, offer a "cure" for the problem at its source. It eliminates the risk of shrinkage by giving engineers unprecedented design freedom, enabling them to build optimized internal structures and cooling systems. The  

For the pursuit of excellent quality, efficient production and cost optimization of modern foundry enterprises, 3D printing is no longer dispensable "additional options", but to promote industrial upgrading, in the fierce competition in the market to win the first chance of the key technology. It is not just a piece of equipment, but also to the "digital casting" bridge to the future, so that the former "casting problems" to be solved! The

3D鎵撳嵃濡備綍閫氳繃浼樺寲鍐呴儴缁撴瀯鏉ユ秷闄ら摳浠剁缉瀛?/a>鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> //cqtmcj.com/en/blogs/2025-sand-mold-3d-printer-selection-guide/ Thu, 21 Aug 2025 08:05:26 +0000 //cqtmcj.com/?p=2371 2025 How to choose a sand 3D printer? 3DPTEK full-size models (J1600/J2500/J4000) + open-source material process, help foundry enterprises to accurately select the model, reduce costs 30%+, improve the casting accuracy to 卤0.3mm.

2025 鐮傚瀷 3D 鎵撳嵃鏈洪€夊瀷鎸囧崡锛氭牴鎹摳浠跺昂瀵搞€佹潗璐ㄩ€夊璁惧鍙傛暟鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> In the casting industry towards intelligent process, sand 3D printer with "mold-free, high-precision, complex structure molding" advantage, become the key equipment to enhance the competitiveness of enterprises. However, there are many models of sand 3D printers on the market (molding size from 500脳500脳500mm to 4000脳2000脳1500mm, suitable for materials covering silica sand, zirconia sand, ceramic sand, etc.), if the selection is not appropriate, it will not only lead to idle equipment, waste of costs, but also affect the delivery of production due to the substandard quality of printing. This article takes 3DPTEK sand 3D printer as an example to analyze how to accurately match the parameters of the equipment based on the size and material of the casting and maximize the benefits of equipment investment.

I. Equipment selection strategy based on casting size

The size of the casting is a central factor in determining the specification of a sand 3D printer, which needs to be selected with a balance between current needs and future developments:

1. Statistical analysis of existing casting dimensions
   1. Enterprises need to comprehensively sort out the past 1-2 years of casting orders, categorized by product type (such as automotive parts, aviation structural components, pumps and valves shells), statistics on the length, width and height of each type of casting size range, drawing size distribution histogram. For example, an automobile foundry statistics found that 60% engine block castings in 300-500mm in length, width 200-350mm, height 150-250mm;
   1. Identify the "core size range" with the highest percentage and use it as a basis for filtering printers. As in the case above, 3DPTEK's 3DPTEK-J1800(molding size 1800脳1200脳1000mm) can easily cover most of the engine block sand printing needs, to avoid "small horse-drawn cart" (equipment molding size is too large, waste of equipment space and printing costs) or "too big to use" (equipment) (equipment molding size is not enough to print large castings).
2. Considering future business expansion
   1. Combined with the enterprise's market planning for the next 3-5 years, new product development plan, prejudge the casting size changes that may be involved. If you plan to develop the wind power equipment castings business, you need to investigate in advance the size of wind power hubs, blades and other large castings (wind power hub diameter of up to 3-5 meters), to reserve enough space for equipment upgrades;
   1. If large castings are only occasionally undertaken, consider 3DPTEK's 3DPTEK-J4000 Ultra-large size printer (maximum molding size 4000脳2000脳1500mm), or "sand cut block + combined assembly" printing strategy (3DPTEK equipment supports localized printing, which facilitates the operation of the cut block), to reduce the cost of equipment procurement.
3. Handling of special size requirements
   1. For castings with special dimensions such as extra-long, extra-wide, extra-thin, etc. (e.g., elongated shaft castings with an aspect ratio of more than 5:1, thin-walled parts with a thickness of less than 5mm), it is necessary to examine the printing accuracy and stability of the equipment in addition to the molding dimensions. 3DPTEK's bonded injection technology ensures that the molding of special-sized castings is performed with a high degree of precision of 卤0.3mm, thus avoiding the scrapping of castings due to deviations in dimensions. avoid scrapping the castings due to dimensional deviation.

Second, suitable for the casting material equipment parameters selection

Different casting materials (e.g. cast iron, cast aluminum, cast steel) have different requirements for sand strength, air permeability and gas generation, which need to be matched with the corresponding equipment parameters and material technology:

1. Material properties and sand demand analysis
   1. Cast iron parts: due to the good fluidity of iron and moderate solidification shrinkage, the strength of the sand mold is required to be high (tensile strength 鈮?0.8MPa) to prevent the sand mold from erosion and breakage during pouring. The high-strength furan resin binder matched with 3DPTEK equipment, together with silica sand, can meet the needs of sand mold printing for cast iron parts;
   1. Aluminum casting: Aluminum liquid solidification speed is fast, easy to absorb air, the sand type is required to have good air permeability (air permeability value 鈮?150) and low outgassing (outgassing 鈮?15ml/g), to avoid casting porosity defects. 3DPTEK's open-source material process can be adjusted according to the needs of the binder formula, suitable for ceramic sand, zirconia sand and other low outgassing, high air permeability sand, to meet the casting of aluminum casting sand print.
2. Material compatibility and parameter adjustment
   1. The 3DPTEK sand 3D printer supports a wide range of casting sands (including quartz sand, pearl sand, chromite sand, etc.), allowing companies to choose sand materials flexibly according to casting materials and cost considerations. For example, when producing high-end stainless steel castings, zirconium sand (high temperature resistant and chemically stable) is used with 3DPTEK's special binder to improve the sand mold's anti-washout and anti-sticking properties;
   1. The nozzle parameters (e.g., orifice diameter, spraying frequency) and heating and curing parameters (curing temperature and time) of the equipment need to be precisely adjusted according to the characteristics of the sand material and the type of binder. For example, when using fine-grained quartz sand, it is necessary to reduce the diameter of the spray hole (e.g., from 0.3mm to 0.2mm) and increase the spraying frequency to ensure that the binder evenly covers the sand particles; for thermosetting binder, it is necessary to optimize the heating curing curve (e.g., increase the curing temperature from 150鈩?to 180鈩? and extend the curing time from 30 seconds to 45 seconds), so as to ensure that the strength of the sand pattern curing.
3. New material application and technical support
   1. As the casting industry's demand for high-performance, lightweight castings increases, new types of sand materials (such as composite sand mixed with metal powders and nano-modified sand) are gradually being applied. 3DPTEK continues to research and develop new material processes that can be customized to meet the needs of enterprises and customize material solutions to help them quickly realize the application of new materials in sand printing.

Comprehensive Advantages of 3DPTEK Sand 3D Printers

1. Full-size product matrix: 3DPTEK has a full line of sand 3D printers ranging from 1.6 meters to 4 meters in size, including 3DPTEK-J1600Pro,3DPTEK-J1600Plus,3DPTEK-J1800,3DPTEK-J1800S,3DPTEK-J2500,3DPTEK-J4000 A variety of models, such as to meet the different sizes of enterprises, different sizes of castings printing needs, to avoid enterprises due to the limitations of equipment specifications missed orders.
2. open source material processIt supports users to adjust the binder and sand material formula as needed to reduce the material cost 20%-30%. At the same time, it is equipped with high-performance resin binder, curing agent and cleaning agent to ensure the stable quality of sand molding and solve the problems of material selection and process optimization of the enterprise.
3. High-precision molding technologyThe company adopts piezoelectric inkjet technology, high-resolution inkjet system, and special binder formula to realize 卤0.3mm high-precision printing, which effectively reduces the machining allowance of the castings, improves the quality of the castings and the production efficiency, and is especially suitable for aerospace, automotive and other industries with stringent requirements for precision.
4. Flexible area molding without sand boxAs 3DPTEK-J4000 Innovative use of sandbox-free flexible area molding technology, support for local printing, can economically and efficiently realize the manufacture of oversized sand molds, compared with the traditional box printing, the equipment footprint is reduced by more than 30%, and the printing cost is reduced by 15%-20%.

Through the above selection strategy based on casting size and material, combined with the comprehensive advantages of 3DPTEK sand 3D printers, enterprises can accurately match the parameters of the equipment to achieve a high degree of compatibility between equipment performance and production needs, and at the same time improve the quality of castings, reduce production costs and enhance market competitiveness.

2025 鐮傚瀷 3D 鎵撳嵃鏈洪€夊瀷鎸囧崡锛氭牴鎹摳浠跺昂瀵搞€佹潗璐ㄩ€夊璁惧鍙傛暟鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> //cqtmcj.com/en/blogs/industrial-grade-wax-mold-3d-printer-2025-large-casting-guide/ Wed, 20 Aug 2025 09:21:38 +0000 //cqtmcj.com/?p=2365 In the field of large-scale casting (aerospace turbine blades, automotive engine components, heavy machinery shells), traditional wax mold making has long been subject to "long cycle time, low precision, complex junction [...]

宸ヤ笟绾ц湣妯?3D 鎵撳嵃鏈猴細2025 骞村ぇ鍨嬮摳閫犲叏鎸囧崡锛岀缉鐭?80% 鍛ㄦ湡 + 鎻愬崌绮惧害鏂规鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> In the field of large-scale casting (aerospace turbine blades, automotive engine components, heavy machinery housings).Traditional Wax Mold MakingConstrained by the three major pain points of "long cycle time, low precision, and difficulty in realizing complex structures", it takes 2-3 weeks to manually make a set of wax molds for turbine blades, with an error of more than 0.5mm, and it is impossible to complete the design of internal cooling channels. And the design of internal cooling channels cannot be completed.Industrial Wax Molds 3D printer锛圱he emergence of SLS (SLS technology as the core) has completely changed the status quo: large wax molds can be printed in 3 days, with an accuracy of 卤0.1mm, and complex structures that are not possible with traditional processes can also be realized. In this article, we will analyze the definition, advantages, workflow, selection guide and 2025 hot models of industrial wax 3D printers, which will provide foundries with hands-on solutions for technological transformation and cost reduction.

comparison dimension	Industrial Wax Mold 3D Printer	Traditional wax molding process (handmade / CNC)
production cycle	3-7 days (large wax models)	2-4 weeks
Dimensional accuracy	卤0.1mm	卤0.5-1mm
Complex structure realization	Easy printing of internal cooling channels, thin-walled honeycomb structures	Multiple sets of wax molds need to be disassembled and are prone to assembly errors.
labor cost	Automated printing, one person can operate multiple machines	Dependence on skilled tradesmen, high labor costs 300%
Material utilization	90% above (unsintered wax powder recyclable)	60%-70% (cutting / manual waste)
Design Iteration	CAD files can be reprinted within a few hours after modification.	Need to remake the mold, long cycle time

The 4 core benefits of industrial-grade wax mold 3D printers for foundries (solving industry pain points)

1. Aerospace:Multi-layer cooling channels inside the turbine blades(The traditional process requires 5 sets of wax molds to be disassembled, while 3D printing molds the mold in one go, with no assembly errors);
2. Cars:Engine block integrated runners(Reduced post-drilling process and increased fluid efficiency by 10%);
3. Heavy machinery:Thin-walled honeycomb structure for large shells(Wall thickness as low as 2mm, weight reduction 20%, strength increase 15%).

4. Long-term cost reductions 40%, offsetting equipment investment

Despite the high initial investment ($50,000+) for an industrial-grade wax-molded 3D printer, the cost advantage is significant when calculated over the full lifecycle:

• Eliminate mold costs: Traditional large CNC wax mold mold costs over 200,000 yuan, 3D printing can be completely eliminated;
• Reduced labor costs: 1 person can operate 3 machines, reducing 80% labor compared to the traditional process;
• Reduction of scrap loss: precision improvement has reduced the casting scrap rate from 15% to 5%, saving more than 500,000 yuan in material cost per year.

Digital Design and OptimizationThe 3D model of the wax mold is constructed in SolidWorks/AutoCAD, the shrinkage is reserved according to the casting metal properties (e.g. steel needs to be enlarged from 1%-2%), and the structure of the sprue and the vent is designed and exported as an STL format file;

Device parameter settingLoad casting wax powder into a printer (e.g. LaserCore-6000) and set the parameters: layer thickness 0.08-0.35mm, laser power 55-300W, molding rate 80-300cm鲁/h to ensure that it is suitable for large wax models;

automated printingAfter the equipment is started, the laser sinter the wax powder layer by layer according to the slicing trajectory. It takes 10-20 hours for a large wax model (e.g. 1050脳1050脳650mm) to be printed unattended at night without human intervention;

Cleaning up after printingAfter the wax mold is completed, remove it from the molding chamber, blow off the excess wax powder on the surface with compressed air (this wax powder can be recycled directly), and inspect the wax mold for holes and cracks (the defect rate of 3D printed wax molds is less than 1%);

Wax mold assembly (mass production)If batch casting is required, individual wax molds are attached to a "wax tree" to improve pouring efficiency;

Suitable for lost wax castingThe wax mold is immersed in ceramic slurry to form a high-temperature-resistant ceramic shell, which is then burned in a 700-1000掳C kiln to remove the wax mold (the ash content of the 3D printing wax mold is <0.1%, and the combustion is complete with no residue), and then the metal can be poured in.

How to choose industrial-grade wax 3D printers for foundries? 4 core selection criteria

For small and medium-sized foundries (part sizes 500-700mm): A model with a molding space of 700脳700脳500mm (e.g. LaserCore-5300) is available;

Large foundries (part size 700-1000mm): We recommend a model with a molding space of 1050 x 1050 x 650mm (e.g. LaserCore-6000).

accurate: Choose a 卤0.1mm model to ensure casting dimensions are met and to minimize post-processing;

Molding rateThe priority is given to models with more than 200 cm鲁/h (e.g. AFS LaserCore-6000 up to 300 cm鲁/h) to increase the efficiency of the production of large wax molds;

Material compatibility: A wide range of casting waxes (e.g. low ash casting waxes, high temperature waxes) are required to support the casting of different alloys (aluminum alloys, steel, titanium alloys).

4. Software and services: making the transition less difficult

1. The software must be compatible with the main CAD formats (STL/OBJ) and come with casting simulation (optimization of the structure of the wax model and reduction of defects);
2. Service providers need to provide full-process support: free operator training (to ensure that the operation is mastered within 3 days), equipment installation and commissioning, 24-hour after-sales response (domestic door-to-door service 鈮?24 hours).

models	Molding space (mm)	Type of technology	accurate	Molding rate	Applicable Scenarios	Core Advantages
AFS-500 (entry level)	500 x 500 x 500	SLS	卤0.1mm	80-150cm鲁/h	Industrial tools, small and medium-sized castings (up to 500mm)	Cost-effective, low power consumption (15KW), suitable for small and medium-sized foundry trial production
LaserCore-5300 (mid- to high-end)	700 x 700 x 500	SLS	卤0.1mm	150-250cm鲁/h	Aerospace turbine blades, automotive parts (500-700mm)	Rapid iteration, stable accuracy, suitable for multi-material printing
LaserCore-6000 (high-end)	1050 x 1050 x 650	SLS	卤0.1mm	250-300cm鲁/h	Large automotive engine blocks, aerospace frames (700-1000mm)	Extra large molding space, high efficiency of mass production, suitable for high production foundries

Model highlights analysis

1. AFS-500Low entry cost, easy to operate, 1 person can manage multiple machines, suitable for small and medium foundries trying 3D printing for the first time, for small and medium-sized wax molds such as industrial tools, valves, and so on;
2. LaserCore-5300The wax molds of turbine blades are widely used in the aerospace industry. The wax molds have a high surface finish and do not need to be polished, increasing the yield of the castings to more than 95%;
3. LaserCore-6000The machine is one of the few in China that can print 1050mm wax models, and can nest 20 small and medium-sized wax models (e.g., automotive parts) in a single run, which increases the utilization rate of the machine by 60%.

Industrial Wax Mold 3D Printing Common Problems + Expert Solutions

1. High initial investment in equipment? -- Phased investment reduces risk

Small and medium-sized foundries can purchase entry-level models (e.g., AFS-500) for wax molding of high value-added parts (e.g., precision valves), quickly recoup their costs through high-margin orders, and then upgrade to higher-end models after 1-2 years.

When printing: Adjust the laser power (55-80W) to ensure that the sintered density of the wax mold is 鈮?.98g/cm鲁 and to reduce the internal porosity;

Firing: gradually increase the kiln temperature from 700掳C to 1000掳C and hold for 2-3 hours to ensure complete vaporization of the wax model (can be verified by the change in weight of the ceramic shell).

4. Unskilled team operation, affecting productivity? -- Give preference to "equipment + training" as an all-in-one service.

Choose a service provider that provides free training (such as AFS brand), 1 to 1 teaching operators to master the daily operation of the equipment, troubleshooting, to ensure the normal operation of the equipment.

In the increasingly competitive large-scale foundry industry, "high precision, fast cycle time, low cost" has become the core competitiveness -- industrial-grade wax mold 3D printers help foundries break through the limitations of traditional processes by shortening the cycle time by 80%, increasing the accuracy by 5 times, and reducing the cost by 40% in the long run. to help foundries break through the limitations of traditional processes.

In 2025, the commercialization of models such as the LaserCore series will provide a fast track from design to wax mold for industries such as aerospace, automotive and heavy machinery. For foundries, choosing the right industrial-grade wax 3D printer will not only reduce costs and increase efficiency, but also unlock difficult casting orders and secure a place in high-end manufacturing - the core value of industrial-grade wax 3D printing in the future of the foundry industry.

宸ヤ笟绾ц湣妯?3D 鎵撳嵃鏈猴細2025 骞村ぇ鍨嬮摳閫犲叏鎸囧崡锛岀缉鐭?80% 鍛ㄦ湡 + 鎻愬崌绮惧害鏂规鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> //cqtmcj.com/en/blogs/4-meter-class-large-sand-mold-casting-3d-printer/ Wed, 20 Aug 2025 07:58:59 +0000 //cqtmcj.com/?p=2360 In the field of large casting manufacturing (e.g., engine blocks, industrial machinery shells, aerospace components), the traditional sand molding process has long been subject to "size limitation, long cycle time, high cost [...]

4 绫崇骇澶у瀷鐮傚瀷閾搁€?3D 鎵撳嵃鏈猴細2025 骞磋В閿佸ぇ鍨嬮摳浠跺埗閫狅紝缂╃煭 80% 鍛ㄦ湡 + 闄嶆湰鏂规鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> In the field of manufacturing large castings (e.g. engine blocks, industrial machinery housings, aerospace components).Traditional sand molding processConstrained by the three major pain points of "size limitation, long lead time and high cost" for a long time - it takes several months to make a 4-meter sand mold, and it needs to be assembled manually by disassembling several groups of sand cores, with a scrap rate of more than 15%.4-meter large-scale sand casting 3D printer(in the form of) 3DPTEK-J4000 On behalf of the emergence of), completely break this dilemma: 1 time printing to complete the 4-meter overall sand, shorten the cycle of 80%, reduce the cost of 40%, but also to achieve the complex internal structure of the traditional process can not be completed. In this paper, we will analyze the core parameters, advantages, application scenarios and industry value of this equipment, and provide technical transformation guidelines for heavy manufacturing enterprises.

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• First, the 4 major pain points of the traditional large-scale sand molding process, 4-meter 3D printing how to crack?
• Second, 4-meter-class large sand 3D printer core analysis: 3DPTEK-J4000 parameters and technical advantages
• The 5 core advantages of 4-meter sand 3D printing: directly enhancing enterprise competitiveness
• Fourth, 4-meter sand 3D printing 4 major industry application scenarios (with actual cases)
• Fifth, choose the right solution: 3DPTEK "equipment + ecological" integrated services
• Future Trends in Large-Scale Sand 3D Printing in 2025: Toward "Bigger and Smarter"
• Conclusion: 4-meter sand 3D printing opens a new era of large casting manufacturing

First, the 4 major pain points of the traditional large-scale sand molding process, 4-meter 3D printing how to crack?

Traditional large-scale sand mold manufacturing (size over 2 meters) needs to go through "mold making - sand core disassembly - manual assembly", there are difficult to solve the pain points, but 4-meter sand 3D printing through the "integrated molding + digital process" to achieve a comprehensive breakthrough. process" to realize a comprehensive breakthrough:

3DPTEK-J4000 As a benchmark equipment in the industry, it is not a simple enlargement of a small printer, but an exclusive design for large-scale sand manufacturing with the following core parameters:

1. Maximum molding size: 4000mm x 2000mm x 1000mm (can print the whole sand pattern of 4 meters long and 2 meters wide without splicing);
2. Process Type: Inkjet binder injection (3DP), suitable for special casting sands such as quartz sand, ceramic sand and ceramic sand;
3. Accuracy and Resolution: Dimensional accuracy 卤0.3mm, nozzle resolution 400dpi, surface finish up to Ra6.3渭m;
4. Layer thickness and efficiencyLayer thickness can be adjusted to 0.2-0.5mm, and 2-3 sets of medium-sized sand patterns (e.g. 2-meter-long pump body sand patterns) can be printed in a single day;
5. Material utilization: 100% of uncured sand recycled with less than 5% of material waste.

2. Core technology: "sand-free flexible area molding" cost reduction

Traditional 4-meter sand molding equipment needs to be fixed large sand box, a single print needs to be filled with tens of tons of sand, the cost is extremely high. And 3DPTEK-J4000 A breakthrough was achieved with the "Sandless Flexible Area Molding Technology":

• Eliminates the need for a fixed sand box, dynamically adjusts the sand bed area to the size of the sand pattern, and reduces the amount of 70% sand used;
• Elimination of large sanding box infrastructure investment (traditional sanding box cost more than 200,000 yuan);
• Equipment purchase cost is the same as 2.5-meter class equipment, with a 50% return on investment.

1. Shorter cycle time 80% to seize the market opportunity

It takes 6 weeks to make a 4-meter engine block sand mold by traditional process, but 3DPTEK-J4000 takes only 3 days to finish printing, and the whole cycle from design to casting delivery is compressed from 3 months to 1 month. A heavy machinery company used it to make large gearbox shell sand mold, new products on the market 2 months ahead of schedule, to seize a share of 30% market segment.

2. Achievement of "oversized + complex" integrated molding

No need to consider the constraints of "stripping" and "splicing" of conventional processes, making it possible to accomplish difficult designs:

• Aerospace: 4-meter-long turbine casing for theInternal multi-layer cooling channels(The traditional process requires 12 sets of sand cores to be disassembled, while 3D printing molds them in a single pass);
• Energy sector: 3-meter diameter wind turbine flangesTopology-optimized weight-reducing structures(Weight reduction 20%, strength increase 15%);
• In the field of industrial machinery: 4-meter-long pump bodies for theSpiral Worm Structure(No splicing seams, 8% increase in fluid efficiency).

Save mold cost: large castings need to replace 2-3 sets of molds per year, 3D printing can be completely eliminated, saving more than 1 million yuan per year;

Reduce scrap loss: a foundry with its production of large valve sand mold, scrap rate from 18% to 4%, reducing annual losses of 500,000 yuan;

Digital inventory: sand patterns are stored as CAD files, eliminating the need to stack physical patterns in the warehouse and saving 100 square meters of storage space.

The 4-meter molding space not only prints large sand molds, but also allows for the nested mass production of small parts:

1. 200 small pump body cores can be nested in a single print run (traditional processes require batch production);
2. Supports "1 set of large sand molds + batch of small sand cores" mixed printing, increasing equipment utilization by 60%;
3. Fast response to customization needs, modifications to the design only require updating the CAD file, no need to recreate the mold.

5. Comply with environmental requirements and help green production

Global environmental regulations are tightening (e.g., China's "dual carbon" policy, EU carbon tariffs), and 4-meter sand 3D printing meets environmental needs through two major technologies:

1. Use of low VOC binders (emissions below national standard 60%) to reduce air pollution;
2. Sand 100% is recycled and reused, reducing solid waste emissions by more than 100 tons per year, which meets the requirements for green factory certification.

Application: 4-meter long new energy heavy truckIntegral motor housingThe sand molding of large engine block;

Case in point: a car company uses 3DPTEK-J4000 Printing the sand mold of the motor shell, the cycle time is shortened from 4 weeks to 3 days, and the casting has no defects at the thin wall (2.5mm), realizing a weight reduction of 30% for the motor and a range increase of 100km.

2. Aerospace and defence: large lightweight structural components

• Application: 4 meters longAero-engine turbine casing, Missile Launcher Tank Sand Type;
• Advantage: integrated printing to avoid sand core splicing errors, casting dimensional accuracy up to CT7 level, to meet the aerospace "zero defect" requirements.

3. Industrial machinery and energy sector: core components for heavy equipment

• Application: 4 meters longLarge Pump Body Worm CasingThe sand molding of wind turbine gearbox shells with a diameter of 3 meters;
• Case: A heavy industry enterprise uses it to print the sand pattern of the pump body, the surface finish of the fluid channel is improved by 50%, the efficiency of the pump body is improved from 75% to 82%, and the annual energy consumption is saved by 1.2 million yuan.

Application: 60 meters long bronze sculptureSegmented sand molding(e.g. the "Nine Horses" sculpture in Nanjing);

Benefits: Eliminates the need for large wood moldings, allows for complex artistic textures, and reduces the sculpture production cycle from 1 year to 3 months.

Fifth, choose the right solution: 3DPTEK "equipment + ecological" integrated services

The success of 4-meter sand 3D printing requires not only high-quality equipment, but also a complete ecological support. 3DPTEK provides "end-to-end" solutions to reduce the difficulty of enterprise transformation:

• Proprietary materialsMore than 30 sand-binder formulations (e.g., low viscosity binder for aluminum alloy casting, high temperature resistant binder for steel casting) ensure casting quality;
• intelligent software: It comes with casting simulation system, which can simulate the flow of metal liquid, cooling contraction, optimize the sand design in advance, and reduce the cost of trial and error;
• Full Process Service: Full process support from CAD modeling, sand printing to post-processing of castings, free operator training (3 days to master the operation of the equipment);
• after-sales service24-hour door-to-door service at home, 5 service centers abroad (Germany, the United States, India, etc.), spare parts arrival cycle 鈮?72 hours, to ensure that the equipment is on throughout the year 鈮?95%.

Future Trends in Large-Scale Sand 3D Printing in 2025: Toward "Bigger and Smarter"

Optimization of sand mold design (automatically generate the optimal structure according to the casting material and size);

Printing process monitoring (real-time adjustment of binder injection volume to avoid sand cracks);

Quality prediction (AI algorithms predict possible defects in castings and adjust the process in advance).

3. Multi-material composite printing: expanding application boundaries

The future equipment can realize "sand + metal powder" composite printing, printing high-temperature-resistant metal coatings on key parts of the sand mold (e.g., the sprue), adapting toTitanium alloy, ultra-high strength steelRefractory alloy casting, expanding the application in the field of high-end equipment.

Conclusion: 4-meter sand 3D printing opens a new era of large casting manufacturing

For heavy manufacturing enterprises, 4-meter-class large sand casting 3D printer is no longer a "technological novelty", but a "necessity to enhance competitiveness" - it breaks the traditional process of It breaks the size and cycle time limitations of traditional processes, and realizes the triple breakthrough of "large-scale + complexity + low cost".

The commercialization of 3DPTEK-J4000 and other equipment has provided a fast track from design to casting for automotive, aerospace, industrial machinery and other industries. In the future, with the research and development of 6-10 meter-class equipment and the integration of AI technology, large casting manufacturing will enter a new stage of "full digitalization, zero defects and greening", and the enterprises that take the lead in laying out this technology will have an absolute advantage in the market competition.

4 绫崇骇澶у瀷鐮傚瀷閾搁€?3D 鎵撳嵃鏈猴細2025 骞磋В閿佸ぇ鍨嬮摳浠跺埗閫狅紝缂╃煭 80% 鍛ㄦ湡 + 闄嶆湰鏂规鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> //cqtmcj.com/en/blogs/sand-mold-3d-printing-technology-transforming-the-metal-casting-industry-by-2025/ Wed, 20 Aug 2025 06:17:48 +0000 //cqtmcj.com/?p=2358 How Sand 3D Printing Technology Reinvented Metal Casting? 2025 Analyzing its core advantages of shortening 80% sand cycle time and reducing cost by 40%, breaking through the limitations of complex structures, with 3DPTEK equipment parameters and case studies from automotive/aerospace industry to help foundries transform.

鐮傚瀷 3D 鎵撳嵃鎶€鏈細2025 骞撮噸濉戦噾灞為摳閫犺涓氾紝缂╃煭 80% 鍛ㄦ湡 + 闄嶆湰鏂规瑙ｆ瀽鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> In the metal casting industry, theConventional sand mold makingLong limited by "long cycle time, low complexity, high cost" three major pain points - the production of a set of complex sand mold takes weeks, and it is difficult to realize the internal cooling channels, thin-walled structure and other complex designs. Andsand mold 3D printing technology锛圱he emergence of (binder jetting technology as the core) has completely changed the status quo: it takes only 24-48 hours from the CAD model to the finished sand model, complex structures are molded in one go, and the material utilization rate is increased by more than 90%. This article will comprehensively analyze the principle of sand 3D printing, core advantages, industry applications and 3DPTEK equipment selection, to provide foundries with technical transformation and cost reduction and efficiency of the practical guide.

I. What is Sand 3D Printing? Core Definition + Process Characteristics (different from traditional mold making)

Sand 3D printing is based onPrinciples of Additive ManufacturingThis is an industrial technology that directly transforms digital CAD models into solid sand molds / cores. Instead of the traditional "mold-making - sand-turning" process, the sand mold is formed by laying sand layer by layer on the printer and curing it by spraying a binder. The core process isBinder jetting technologyThe J1600Pro, J2500, and J4000 models from 3DPTEK, for example, offer significant advantages over conventional molding:

Second, the foundry must use sand 3D printing 4 core reasons (to solve the industry pain points)

1. in the field of aerospaceTurbine blade internal cooling channels(The traditional process requires more than 5 sets of sand cores to be disassembled, which is prone to assembly errors);
2. AutomotiveLightweight thin-walled motor housing(Wall thickness can be as low as 2mm, conventional sand type is prone to fracture);
3. industrial machineryIntegrated oil passages transmission housing(Reduces post-drilling process and reduces scrap rate).

3. Long-term cost reductions 40%, offsetting equipment input costs

Despite the high initial investment in sand 3D printers, the cost advantage is significant when calculated over the full life cycle:

• Elimination of mold production costs (a set of large metal mold cost more than 100,000 yuan, 3D printing can be completely eliminated);
• Reduced scrap rate (digital design + simulation optimization, casting scrap rate reduced from 15% to less than 5%);
• Reduced labor costs (automated printing eliminates the need for manual assembly of multiple sand cores, reducing labor by 50%).

4. Comply with environmental requirements and realize green production

As global environmental regulations tighten (e.g., the EU REACH standard), sand 3D printing meets the need for environmental protection through two main technologies:

• adoptionLow Emission Binder(3DPTEK proprietary formulation with VOC emissions below industry standard 50%);
• Uncured sand can be 100% recycled, reducing solid waste generation and environmental treatment costs.

Three, sand 3D printing principle: 4 steps from design to sand (full process automation)

Sand 3D printing (binder jetting technology) is a simple, highly automated process that requires no complex human intervention, with the following core steps:

1. Digital Design and Simulation: Engineers use CAD software to build sand models, and simulate the flow of liquid metal, cooling and shrinkage processes through the 3DPTEK casting simulation system to optimize the pouring system and riser position of the sand model, so as to avoid defects such as shrinkage holes and porosity in the castings;
2. Layer-by-layer molding: The printer automatically lays down 0.26-0.30mm thick sand (quartz sand/chromite sand optional) and then, based on the slicing data, sprays the binder on the area to be cured and builds up the sand pattern layer by layer;
3. Curing and sand cleaning: After printing, the sand model is left to cure (strengthen) in a closed environment for 2-4 hours, after which the uncured loose sand (which can be recycled directly) is blown out with compressed air;
4. Casting and post-processingThe molten metal (aluminum alloy, steel, copper alloy, etc.) is poured into the sand mold, which is then cooled, cracked and removed for finishing - the entire process requires no human intervention in the sand mold making process.

models	Print size (L 脳 W 脳 H)	layer thickness	Applicable Scenarios	Suitable for casting alloys
3DPTEK-J1600Pro	1600脳1000脳600mm	0.26-0.30mm	Small and medium-sized sand molds (e.g., motor housings, small pump bodies)	Aluminum, cast iron
3DPTEK-J2500	2500脳1500脳800mm	0.26-0.30mm	Medium to large sand molds (e.g. gearbox housings, turbine housings)	Steel, copper alloys
3DPTEK-J4000	4000脳2000脳1000mm	0.28-0.32mm	Oversized sand molds (e.g. ship propellers, large valves)	Stainless steel, specialty alloys

Core AdvantagesAll models support "sand + binder" custom formulations, and 3DPTEK has over 30 proprietary formulations to match the needs of different alloys (e.g., aluminum alloy casting for low-viscosity binder, steel casting for high-temperature-resistant sand).

1. The automotive sector: core support for the electrification transition

• Application Scenarios:Electric vehicle water-cooled motor housing, lightweight battery tray sand molding.;
• Example: A commercial electric truck manufacturer used the 3DPTEK J2500 to print a sand mold of the motor case, realizing an "integrated cooling channel" design, which improved the motor cooling efficiency by 30%, while reducing the weight of the case by 25% and increasing the range by 50km.

Application Scenarios:Turbine blades, aero-engine combustion chamber sand molding.;

Advantage: The dimensional accuracy of the sand mold reaches CT7 level, which meets the requirement of "zero error" for aerospace parts, and at the same time, avoids the scrapping of blades caused by the assembly error of traditional sand cores.

3. Industrial machinery industry: core components for large equipment

• Application Scenarios:Sand molding of large pumps and compressor housings.;
• Case: A heavy industry enterprise used 3DPTEK J4000 to print a 4-meter-long pump body sand mold, the traditional process requires the production of three sets of metal molds (costing more than 300,000 yuan), 3D printing directly eliminates the cost of molds, and shortens the production cycle from 4 weeks to 3 days.

Application Scenarios:Ship propeller, wind turbine shell sand molding.;

Advantage: The J4000 model's 4-meter wide print size allows for the printing of very large sand molds in one pass, eliminating the need for splicing and reducing mold-fitting defects in castings.

Why choose 3DPTEK sand 3D printing solution? (4 core competencies)

2. Proprietary material formulas to ensure casting quality

3DPTEK has more than 30granule – Exclusive formulation for bonding agents, optimized for different alloys:

1. Aluminum alloy casting: low viscosity binder, good sand permeability, reduce casting porosity;
2. Steel casting: high-strength binder, sand mold high temperature resistance (more than 1500 鈩?, to avoid the defect of sand washing;
3. Copper alloy casting: low ash binder to prevent inclusions on the casting surface.

3. Integrated technical support to reduce the difficulty of transition

Provide "equipment + software + service" full-process support:

1. free of chargeCasting Simulation Software(Optimize sand design and reduce trial and error costs);
2. Inside the casting technology center, can assist customers in sand testing, casting process debugging;
3. Provide operator training (1 to 1 instruction to ensure equipment operation within 3 days).

4. Global after-sales network to ensure production stability

The equipment has been landed in more than 20 countries in Europe, Asia, the Middle East, etc., and the after-sales response speed is fast:

1. Domestic 24-hour door-to-door service (48 hours for remote areas);
2. 5 service centers abroad (Germany, India, USA, etc.) for quick replacement of spare parts;
3. Free equipment maintenance 2 times a year to extend the life of the equipment (average life of more than 8 years).

VII. Future Trends of Sand 3D Printing in 2025 (3 Directions to Watch)

2. Closed-loop sand recycling, material utilization rate of 98%

exploit (a resource)Automatic Sand Recovery SystemIn addition, the uncured sand and old sand will be screened, decontaminated and recycled, and the material utilization rate will be increased from the current 90% to more than 98%, which further reduces the material cost and meets the requirements of the "Double Carbon" policy.

3. Multi-material composite printing to expand application boundaries

The future of sand 3D printers will enable "sand + metal powder" composite printing - printing metal coatings on critical parts of the sand model (e.g., gates) to improve the sand model's high-temperature resistance, and to accommodateUltra-high strength steel, titanium alloyRefractory alloys such as casting, expanding the application in the field of aerospace, high-end equipment.

In the increasingly competitive metal casting industry, "fast response, complex structure, green cost reduction" has become the core competitiveness - sand 3D printing by shortening the cycle time of 80%, realizing difficult designs, long-term cost reduction 40% and help foundries break through traditional process constraints.

3DPTEK, as a leading company in the field of sand 3D printing, provides customized solutions for foundries of different sizes through multiple models of equipment, exclusive material formulations, and integrated technical support. Whether in the automotive, aerospace, industrial machinery or energy sectors, choosing sand 3D printing means choosing the double advantage of "cost reduction and efficiency + technological leadership", which is also the core way for foundries to survive in 2025 and beyond.

鐮傚瀷 3D 鎵撳嵃鎶€鏈細2025 骞撮噸濉戦噾灞為摳閫犺涓氾紝缂╃煭 80% 鍛ㄦ湡 + 闄嶆湰鏂规瑙ｆ瀽鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> //cqtmcj.com/en/blogs/industrial-sls-3d-printer-precision-manufacturing-for-complex-parts/ Wed, 20 Aug 2025 03:41:18 +0000 //cqtmcj.com/?p=2355 Learn about the principles, advantages, materials and applications of industrial-grade SLS 3D printers! In 2025, we will analyze how it breaks through the traditional process, realizes the precision manufacturing of complex parts, shortens the cycle time of 70%, and reduces the cost of 40%, and adapts the 3DPTEK equipment to aerospace/automotive/medical/casting scenarios.

宸ヤ笟绾?SLS 3D 鎵撳嵃鏈猴細澶嶆潅闆朵欢绮惧瘑鍒堕€犵殑闈╂柊鏂规锛?025 骞存妧鏈В鏋愪笌琛屼笟搴旂敤鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> In the wave of transformation and upgrading of the modern manufacturing industry, theHigh precision, high durability, complex structural partsDemand continues to rise. Traditional manufacturing methods are repeatedly limited in small lot production, rapid prototyping and machining of complex geometries, and theIndustrial Grade SLS 3D PrinterWith Selective Laser Sintering (Selective Laser Sintering) technology, become the core equipment to break through these bottlenecks. This article will comprehensively analyze the principle, advantages, applicable materials, industry applications and future trends of industrial-grade SLS 3D printing, to provide manufacturing enterprises with technology selection and production optimization reference.

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• I. What is an Industrial Grade SLS 3D Printer? Core Definition and Technical Characteristics
• 4 Core Benefits for Manufacturers Choosing Industrial SLS 3D Printing
• Third, the core material of industrial-grade SLS 3D printing: more than nylon, casting application materials into a new hot spot
• Industrial-grade SLS 3D printing works: from design to finished product in 5 steps
• V. Industrial SLS 3D Printer Industry Applications: Typical Scenarios in 4 Major Fields
• Case Study: European Automotive Supplier Uses SLS 3D Printing to Reduce Cost by 40% and Increase Efficiency by 70%
• 3DPTEK Industrial Grade SLS 3D Printer: Why is it the Industry's Preferred Choice?
• VIII. Future Trends of Industrial SLS 3D Printing in 2025: 3 Directions of Concern
• IX. Conclusion: Industrial Grade SLS 3D Printing, More Than a "Printer", It's a Tool for Manufacturing Innovation

comparison dimension	Industrial Grade SLS 3D Printer	Desktop SLS Devices
Molding space	Large (some models up to 1000mm)	few
production efficiency	High, supports mass production	Low, mostly single-piece printing
Quality of parts	Stable and meets mass production standards	Lower precision, suitable for prototyping
Material compatibility	Hiro (engineering plastics, casting sand, wax)	Narrow (mostly basic nylon powder)

In addition, industrial-grade SLS printing requires no support structure (unsintered powder naturally supports the part), making it easy to accomplish things that are impossible with traditional processes.Complex internal channels, lightweight lattice structures, active componentsAll-in-one molding.

1. No upper limit of design freedom, breaking through the traditional process limitations

No support structure is required, allowing engineers to designComplex internal cavities, integrated moving parts, topology-optimized lightweight structure-- such as hollow structural parts in aerospace and complex runner components in automotive engines -- are difficult to achieve with traditional processes such as CNC machining and injection molding.

2. Strength of parts up to standard, directly used in mass production scenarios

SLS printed parts are not "prototypes" but finished parts with useful functionality. Commonly usedPA12 (nylon 12), PA11 (nylon 11), glass fiber reinforced nylonThese materials have mechanical properties close to those of injection-molded parts, as well as excellent chemical resistance and impact resistance, and can be used directly in mass-production scenarios such as automotive interior parts and medical and surgical tools.

4. Supporting scale-up and transition production to reduce costs

Industrial-grade SLS equipment can nest dozens or even hundreds of parts in a single print run, making it ideal forSmall batch mass productionSLS can also be used as a "bridge manufacturing" tool - using SLS to quickly produce transitional parts before committing to expensive injection molds, avoiding risky tooling investments and reducing upfront production costs.

1. Foundry sand: direct production of metal casting sand molds / cores

by combiningQuartz Sand / Ceramic SandMixed with a special binder for laser sintering, industrial-grade SLS printers can directly print sand molds and cores for metal casting, with core benefits including:

• Suitable for pump bodies, turbine housings, automobile engine blocks, etc.Complex internal cavity castings.;
• Eliminates the need for traditional wood/metal molds, reducing mold costs and lead times;
• High precision of sand size (error 鈮?.1mm), smooth surface, improve the yield of castings.

Low surface roughness (Ra鈮?.6渭m) to meet the needs of precision parts casting;

Ash content <0.1%, no residue when casting dewaxing, avoid casting defects;

Shortened production cycle time 50% for rapid production of small quantities of precision wax molds.

SLS Sand 3D PrinterThe molding length is up to 1000mm, which supports the mass production of large-size casting sand molds and is suitable for casting of large mechanical parts;

SLS Wax Mold 3D Printer: High-resolution printing (layer thickness 0.08mm), compatible with standard casting wax formulations for seamless integration into traditional investment casting processes.

3D design and pre-processing: Completion of the part design in CAD software, optimization of the structure (e.g., increase of wall thickness, nesting arrangement) by means of special software, and generation of STL files that are recognized by the SLS equipment;

Powder laying: The equipment automatically spreads the powder material evenly on the molding platform, and the layer thickness is controlled at0.08-0.35mm(precision adjustable);

Selective Laser Sintering: High-power laser scanning based on the cross-section trajectory of the part fuses and solidifies the powder particles to form a single-layer part structure;

pile up layer by layer: The molding platform is lowered one level, the machine is re-laid with new powder, and the laser sintering step is repeated until the part is fully formed;

Cooling & Powdering: The parts are cooled slowly in a closed environment (to avoid deformation), and the unsintered powder is removed after cooling (recyclable, with a material utilization rate of more than 90%).

V. Industrial SLS 3D Printer Industry Applications: Typical Scenarios in 4 Major Fields

With the advantages of high precision, high compatibility and fast production, industrial-grade SLS technology has landed in many key industries, and the typical application scenarios are as follows:

give birth to a childLightweight ducting, air handling componentsThe weight of the part is reduced 30%-50% through lattice structure optimization, while strength is guaranteed;

Manufacturing of complex structural satellite components, aircraft interior mounts without assembly, reducing the risk of failure.

R&D phase: rapid printingHousing, bracket, dashboard prototypeThe design is validated in 3 days, shortening the development cycle;

Mass production stage: small batch production of customized automotive interior parts and maintenance spare parts, avoiding investment in molds and reducing costs.

customizablePatient-Only Anatomical Models(e.g., orthopedic surgical planning models) to help physicians accurately develop surgical plans;

Produces personalized orthopedic instruments and surgical tools with materials that meet medical grade standards and biocompatibility.

Large metal castings: Direct printing of sand molds/cores for complex parts such as pump bodies and turbine housings;

Precision parts casting: Printing of low ash wax molds for investment casting of precision parts such as aerospace turbine blades and jewelry.

Case Study: European Automotive Supplier Uses SLS 3D Printing to Reduce Cost by 40% and Increase Efficiency by 70%

A European automotive supplier needed to customize tooling for a short-term production task. The traditional solution used CNC machining, which required a 10-day lead time and high equipment costs; it switched to CNC machining.3DPTEK Industrial Grade SLS 3D PrinterAfter:

• Material Selection: High strength PA12 powder is used, the strength of the part meets the requirements of the tooling;
• Production cycle time: only 3 days from design to finished product, 70% shorter than CNC machining;
• Cost Control: No need for molds and complex machining, reducing overall costs by 40%;
• Result: Successful completion of a short production run and verification of the feasibility of SLS technology in tooling manufacturing.

1. Large size and high speed at the same timeSome models have a molding length of up to 1000mm, which supports the production of oversized parts. Meanwhile, the printing speed is 20% higher than the industry average, which improves the efficiency of mass production;
2. Strong multi-material compatibilityThe machine can be adapted to a wide range of materials such as engineering plastics, casting sand, casting wax, etc., so that one machine can meet the needs of multiple scenarios;
3. Full Process Solutions: Provides a wide range of services from printing devices toCasting simulation software, post-processing equipmentThe all-in-one solution eliminates the need for additional third-party tools;
4. Global Technical Support: Full-cycle service covering equipment installation, operation training and after-sales maintenance to ensure stable operation of the production line.

VIII. Future Trends of Industrial SLS 3D Printing in 2025: 3 Directions of Concern

With the advancement of material science and automation technology, industrial SLS printing will develop to higher efficiency, wider application and higher quality, and the 3 major trends in the future are obvious:

1. Increased print speed without sacrificing accuracy: Through laser power optimization and multi-laser simultaneous sintering technology, the printing speed will be increased by more than 50%, while maintaining a high accuracy of 0.08mm;
2. Expansion of material categoriesHigh-temperature composite materials (such as PEEK-based powders) and metal-based composite powders will be gradually landed, expanding the application of SLS in high-temperature and high-strength scenarios;
3. Closed Loop Intelligent ProductionThe integrated real-time monitoring system monitors the printing process through AI algorithms and automatically adjusts the laser parameters to realize "zero-defect" mass production and reduce the scrap rate.

Industrial-grade SLS 3D printers are no longer just "prototyping machines", they are "design-production-application" machines that are capable of linking the entire design-production-application process.Production-grade solutionsIndustrial SLS technology provides efficient, cost-effective solutions to the lightweight needs of the aerospace and automotive industries. Whether it's the lightweight needs of aerospace, the rapid response needs of the automotive industry, the personalization needs of the medical field, or the digitalization needs of the foundry industry, industrial-grade SLS technology provides an efficient, cost-effective solution.

For manufacturing companies, choosing the right industrial-grade SLS equipment (such as 3DPTEK's sand/wax mold models) not only improves productivity, but also breaks through the limitations of traditional processes and seizes the high ground for innovation - which is the core value of industrial-grade SLS 3D printing in the future of manufacturing.

宸ヤ笟绾?SLS 3D 鎵撳嵃鏈猴細澶嶆潅闆朵欢绮惧瘑鍒堕€犵殑闈╂柊鏂规锛?025 骞存妧鏈В鏋愪笌琛屼笟搴旂敤鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> //cqtmcj.com/en/news/sandikeji12nfazhanceluechixufalibinggou3dshuzihuakouqiangkejigongsi/ Tue, 12 Aug 2025 00:48:04 +0000 //cqtmcj.com/?p=2328 SANDI Technology acquired Shuanglong Dental Research to empower rehabilitation medicine through 3D digital technology and strengthen its strategic layout as an important application scenario for 3D printing.

涓夊笣绉戞妧鈥?2N鈥濆彂灞曠瓥鐣ユ寔缁彂鍔涳紝骞惰喘3D鏁板瓧鍖栧彛鑵旂鎶€鍏徃鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> (hereinafter referred to as "SANDI") announced the completion of the acquisition of Shenzhen Shuanglong Dental Research Technology Co. This acquisition is a reinforcement of the important application of 3D printing in the field of rehabilitation and medical treatment. SANDI has formed a unique "12N" strategy in the field of 3D printing, i.e. 1 set of 3D printing machines, 1 set of 3D printing machines, 1 set of 3D printing machines and 1 set of 3D printing machines.3D printing technology, 2 solutions (3D Castingcap (a poem)3D Powder Metallurgy), N application scenarios.

Shuanglong Dental Research focuses on providing high-end customized denture solutions for the global market, mainly focusing on all-ceramic restorations, implant restorations and 3D printed removable dentures, serving high-end clinics and implant centers. The company holds EU CE, US FDA and China Class II medical device certificates, and its products are exported to more than 30 countries and regions around the world, such as America, Europe, Australia and Southeast Asia. The company has a team of senior technicians with more than 20 years of experience and a professional multi-lingual customer service team. Relying on the digital service platform, the company supports efficient STL/CAD cloud docking and has established an internationalized delivery network covering DHL/UPS.
 
Data show that the global dental 3D printing market size has reached 5.2 billion dollars in 2024, and is expected to exceed 9.6 billion dollars in 2033. The strong combination of SANDI and Ssangyong Dental Research not only combines SANDI's core technology advantages in 3D printing intelligent equipment and material process with Ssangyong Dental Research's channel network, production capacity and dental restoration technology in the global high-end denture market, but also is a deep integration of the two sides in technological innovation and global market development. Through this merger and acquisition, SANDI will be able to quickly access the mature customer base covering high-end markets in Europe and the United States, accelerating the global landing of its dental 3D printing solutions; at the same time, Ssangyong Dental Research will also get stronger technical empowerment, significantly improve product innovation, production efficiency and global delivery capacity, and jointly expand the incremental market of directly printed permanent restorations, orthodontic appliances and so on.

This merger and acquisition reflects the unremitting efforts and remarkable achievements of SANDI Technology in technology leadership and deep application cultivation.

I. Leading Technology: Building a "Trinity" Innovation System

As a national high-tech enterprise, a "small giant" enterprise and a typical application scenario supplier of additive manufacturing of the Ministry of Industry and Information Technology (MIIT), SANDI has a profound technical background. The company is the only service provider in China that has mastered the four core 3D printing technologies of Selective Laser Sintering (SLS), Selective Laser Melting (SLM), 3D Sand Printing (3DP) and Binder Jet (BJ).
 
Its innovation system consists of "Guoqian Science and Technology Research Institute" (gathering more than 40 national experts/doctoral scholars, focusing on original innovation), postdoctoral research station (focusing on common technology development) and enterprise R&D team (responsible for the transformation of the results) "three in one". The company has led or participated in the completion of six major special projects of the Ministry of Science and Technology, and has declared nearly 300 intellectual property rights, including 59 authorized invention patents.
 
Second, application deep plowing: the whole chain layout to drive growth

Focusing on industrial-grade additive manufacturing and aiming at "improving efficiency, reducing costs and improving quality", SANDI has built a complete industrial chain covering equipment R&D and production, material R&D and production, process technology support and rapid finished product manufacturing. Headquartered in Beijing, the company has subsidiaries in many places across the country, with more than 120,000 square meters of space (of which more than 60,000 square meters are self-holding), and has established a full chain, multi-materials, full-size domestic rapid manufacturing delivery system and international service network, and its core application areas include:
 
 1.3D casting: reshaping the traditional casting ecology
Through M&A integration and self-construction, SANDI has laid out 8 3D printing rapid manufacturing bases in China, forming an ecological network. Based on the integrated process of "process design-3D printing-casting-machining-inspection", the company provides rapid prototyping, small-lot multi-species and complex metal parts manufacturing services. Using self-developed 3DP sand printing and SLS series equipment, the company provides 3DP sand casting, SLS sand casting, 3DP/SLS precision casting and other complete solutions, serving more than 500 customers in aerospace, automotive, energy, etc., with materials covering aluminum, copper, iron, steel, magnesium, high temperature alloys, titanium alloys, etc. The company has also established an ecological network based on the integrated process of "process design - casting - machining - testing".
 
 2.3D Powder Metallurgy: Implementing a Differentiated Equipment Strategy
Relying on the advantages of BJ technology "high efficiency, low cost, no thermal stress" and deep technical reserves (including the development of high-performance water-solvent-based binder systems and more than 20 process formulations), SANDI has implemented a differentiated equipment strategy in the field of thermal management of AI chips: for scientific research/chip design enterprises: desktop research equipment J160R for rapid prototyping and thermal design verification; for liquid-cooled server manufacturers: providing integrated industrial solutions (J400P/J800P equipment + special powders/binders + process kits), which can shorten customers' process development cycle by more than 60%.
 
 3. Rehabilitation medical customization: precise digital manufacturing
The company empowers rehabilitation medical care with 3D printing technology, providing products and services such as hearing aids, digital dentistry (meaning teeth), orthotics and prosthetics. We have the first 3D printing titanium alloy hearing aid medical device registration certificate in China. Through the merger and acquisition of Shenzhen Shuanglong Dental Research, we have perfected the high-end customized digital dental solutions to serve clinics and implant centers around the world.
 
Dr. Zong Guisheng, Chairman of SANDI Technology, said, "The merger and acquisition of Shuanglong Dental Research is an important step in the strategic development of SANDI Technology, which not only provides us with a new growth point in the 3D medical field, but is also an important addition to the empowerment of rehabilitation medical care by 3D digital technology. We look forward to this cooperation to bring more innovations to both parties and jointly promote the industrialization of 3D printing technology in the field of rehabilitation and medical treatment."
 
Shuanglong Dental Research's founder, Peng Huihua, and general manager, Chen Long, both agreed: "After joining the SANTI Technology ecosystem, we are able to leverage SANTI Technology's digital manufacturing technology and material and process advantages to further enhance the design and manufacturing capabilities and delivery speed of high-end dental products, and better respond to users' needs for efficient chairside solutions."

涓夊笣绉戞妧鈥?2N鈥濆彂灞曠瓥鐣ユ寔缁彂鍔涳紝骞惰喘3D鏁板瓧鍖栧彛鑵旂鎶€鍏徃鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> //cqtmcj.com/en/news/sandikejizhuhezhongguoyousejinshuxueshunianhuichenggongzhaokai/ Fri, 01 Aug 2025 07:26:09 +0000 //cqtmcj.com/?p=2321 SANDY Technology was invited to participate in the conference as a supporting organization. Dr. Zong Guisheng, chairman of the company, served as the chairman of the sub-committee on Key Preparation Technologies for Additive Manufacturing of Metallic Materials. Chen Qingwen, Vice President of R&D of the company, made an invited report entitled "Research and Application Progress of Binder Jet (BJ) Printing Titanium Alloy" in the forum.

涓夊笣绉戞妧绁濊春涓浗鏈夎壊閲戝睘瀛︽湳骞翠細鎴愬姛鍙紑鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> On July 29-31, 2025, the 15th Annual Conference of China Nonferrous Metals Society was held in Zhengzhou. As a high-level academic event in the field of non-ferrous metals in China, this annual meeting, with the theme of "leading the industrial upgrading of non-ferrous metals industry with new industrialization", gathered more than 1,000 top experts, scholars and industry representatives from home and abroad to break the new blueprint for the industry's scientific and technological self-reliance and self-improvement.

Ltd. was invited to participate in the conference as a supporting organization. Dr. Zong Guisheng, chairman of the company, served as the chairman of the sub-committee on Key Preparation Technologies for Additive Manufacturing of Metallic Materials. Mr. Chen Qingwen, Vice President of R&D of the company, made an invited report titled "Research and Application Progress of Binder Jet (BJ) Printing of Titanium Alloys" in the forum on the afternoon of 30th. The report focuses on the core advantages of BJ technology of high efficiency, low cost and no thermal stress, and deeply analyzes the innovative breakthroughs of SANDI Technology in the field of titanium alloy molding:

Overcoming the core difficulties, we have successfully developed a high-strength water-based binder system with strong bonding, low residue and excellent spraying performance. Triple Strength Enhancement: Innovative optimization of PVP cross-linking, strengthening of interfacial ionic bonding and enhancement of penetration depth to build a three-dimensional mesh structure, which significantly improves the strength of the billet. Excellent performance index, based on the self-developed test platform of TC4 titanium alloy sintered body, oxygen content 99%, mechanical properties comprehensively beyond the ASTM B381-13 forging TC4 alloy standards. At present, SANDI Technology'sBJ binder jetting titanium alloy technology processRelevant applied researches have been carried out in the fields of 3C electronics, molds, high-end handicrafts and precision machinery parts.

SANDI Technology has independently mastered the key technologies of the whole chain of BJ binder jet metal/ceramic molding equipment, materials, processes, etc.: independently researched and developed 3DPTEK-J160R/J400P/J800P serialized BJ printing equipment, integrating precise feeding, high density powder laying and high precision inkjet control system. It solves the problem of high density laying of small particle size and low fluidity powder, realizes 800-1200dpi ultra-high resolution printing, molding precision better than 卤0.1mm, highest molding efficiency 3600cc/h, and technical indexes reach international advanced level. Formed a sound binder material molding process system. Based on more than 20 kinds of process formulas formed by two major types of water-based environmentally friendly binder and solvent-based high-efficiency binder, the company develops corresponding molding processes and post-treatment processes such as degreasing and sintering, and realizes the molding of metallic materials such as stainless steel, tool steel, titanium alloy, copper alloy, high-temperature alloys, cemented carbide, ceramic materials such as silicon carbide (SiC), and non-metallic materials such as PMX crystalline waxes, inorganic salts, foodstuffs, medicines, polymers and composite materials. Composite materials and other non-metallic materials molding process. Meanwhile, through the systematic research on high density degreasing and sintering molding process, we have realized the shape and property control of metal and ceramic products in the process of degreasing and sintering, and precisely controlled the quality of the finished products after degreasing and sintering, and the performance of the products is better than that of the mechanical properties of the MIM international material standard.

At the same time, three emperor technology actively cooperate with shenzhen vocational technology university, shenzhen tsinghua university research institute, shanghai jiaotong university, university of science and technology of beijing and other top institutions, in-depth development of BJ technology in the material, process and application of basic research. The deep integration of industry, academia and research is accelerating the application of this technology in industrial molds, high-end cutting tools, 3C electronic precision parts, as well as complex and large-size shaped ceramic products and other areas of large-scale application landing.

In the key year of the "Tenth Five-Year Plan", the innovative additive manufacturing technology represented by BJ is becoming the core engine to drive the deep transformation and upgrading of the non-ferrous metal industry. SANDI will continue to plough into the independent innovation of core technology, join hands with the industry, academia, research and use of the strength of all sectors, in order to promote the new type of industrialization, non-ferrous metal industry to achieve a high level of scientific and technological self-reliance and self-improvement to contribute to the solid power.

[About SANDI TECHNOLOGY

3D Printing Technology, Inc. is a 3D printing equipment and rapid manufacturing service provider, a national specialized, special and new "small giant" enterprise, and a typical application scenario supplier of additive manufacturing of the Ministry of Industry and Information Technology (MIIT). At the same time has laser and binder jet 3D printing equipment and materials technology and application process, business covers the development and production of 3D printing equipment, 3D printing raw materials development and production, 3D printing process technology support services, rapid finished parts manufacturing services, etc., the establishment of a complete 3D printing additive manufacturing industry chain, which is widely used in aerospace, electric power and energy, ships, pumps and valves, automobiles, rail transportation, industrial machinery, 3C electronics, rehabilitation and transportation, and industrial machinery, 3C electronics, and industrial machinery, and industrial machinery, and industrial machinery, and industrial machinery, and 3C electronics, and rehabilitation and transportation, industrial machinery, 3C electronics, rehabilitation and medical treatment, education and scientific research, sculpture and cultural creation and other fields.

涓夊笣绉戞妧绁濊春涓浗鏈夎壊閲戝睘瀛︽湳骞翠細鎴愬姛鍙紑鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> //cqtmcj.com/en/news/3dzhuzaoguncongkuaisushizhidaopiliangshengchanpojiedianlinengyuandajiannanti/ Fri, 01 Aug 2025 01:04:09 +0000 //cqtmcj.com/?p=2316 Faced with the dilemma of rapid innovation and stable batch production, SANDI Technology's 3D casting process, 5-7 days of rapid validation, and then optimize the metal mold design based on validation data, which not only ensures the speed of innovation, but also ensures the quality of batch production.

3D閾搁€犱辅浠庡揩閫熻瘯鍒跺埌鎵归噺鐢熶骇锛岀牬瑙ｇ數鍔涜兘婧?#8221;澶т欢闅鹃”鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]> In the field of electric power and energy equipment manufacturing, large castings are facing the double challenge of "both rapid innovation and stable batch production". This kind of "big, fine, difficult" castings are not only huge size, but also on the airtightness, strength and dimensional accuracy has nearly demanding requirements. The traditional manufacturing method is caught in a dilemma: if the pursuit of rapid innovation, the use of wooden mold trial period is shorter (about 40 days), but can not meet the stringent precision requirements of the product, but also can not meet the requirements of mass production of the quality and stability; if the direct opening of the metal mold, it is a huge investment in the early stage (mold costs more than 500,000 yuan), and the design of the high cost of change. This contradiction seriously restricts the iterative speed of power equipment, especially in the current industry to accelerate the green, intelligent transformation of the background, the traditional process has been difficult to meet the market demand for rapid product upgrading.

Faced with the dilemma of rapid innovation and stable batch production, SANDI Technology's3D Casting ProcessIn addition, through the 3DP sand printing to achieve 5-7 days of rapid verification, and then based on the verification data to optimize the metal mold design, not only to ensure the speed of innovation, but also to ensure the quality of the batch production, successfully cracked this industry dilemma.

In the manufacturing of extra-high voltage GIS shells, the traditional process requires 3-4 months of mold trimming trial production cycle, while SANDI Technology adopts 3DP sand printing technology to complete the prototype manufacturing and performance testing in only 5-7 days, and realize instant response to design changes through digital models. After qualified by customer verification, the product is quickly transferred to the mass production stage of metal molds, the overall development cycle is shortened by more than 60%, and the surface quality of the final product reaches the standard of zero defects, and the pinhole degree of the sealing surface is better than Grade 1, and it passes the airtightness test.

In a GIS conductor project, SANDI Technology completed the trial production of the product in only 20 days through the innovative process of 3DP sand mold combined with low-pressure casting, and the electrical conductivity fully meets the standards of a class of castings. After rapid verification of the product immediately transferred to large-scale production, not only to help the customer to win the order share of 80%, but also to achieve a stable mass production capacity of 1500 sets of products per year.

This manufacturing model is a perfect fit for the "many varieties, small batch" production characteristics of the power energy sector. Compared with the automotive industry often hundreds of thousands of pieces of large quantities, power equipment components (such as special transformer components, shells, conductors, etc.) annual demand is often only a few dozen pieces. Traditional casting processes are inefficient and costly in this context. SANDI's solution demonstrates excellent flexibility: 3DP sand casting is used for small orders, eliminating the need for costly mold investments; when demand grows, it can be seamlessly switched to metal mold mass production mode. This flexible production capability empowers power equipment manufacturers to effectively respond to market fluctuations and technology iterations. This kind of full-process service integrating "rapid verification of prototype + mass production" is the core advantage of SANDI Technology that distinguishes it from a single 3D printing service provider. The 3D casting center in Pingdingshan, Henan Province under SANDI Technology is equipped with a complete integrated service capability of "process design + 3D printing + casting + machining and testing", with R&D and scale production capacity of super-large shaped aluminum alloy castings, as well as a professional coating line (with a daily coating capacity of 200 square meters, which meets the strict requirements of the national standard), which can achieve an annual production capacity of high-end aluminum alloy castings, and can be used for the production of high-end aluminum alloy castings. The company can achieve an annual output of 5,000 tons of high-end aluminum alloy parts, providing a solid guarantee for the final quality of complex electric energy castings.

In the future, with the rapid development of the smart grid, electric power energy and other fields, three emperor technology will continue to deepen the innovative application of 3D casting technology, through digital, intelligent means to continuously improve product quality and production efficiency, for the transformation and upgrading of electric power and energy equipment to provide a more powerful impetus to promote the entire industrial ecosystem to the direction of more efficient, greener, smarter, and to help China's manufacturing to high-end, Intelligent direction.

3D閾搁€犱辅浠庡揩閫熻瘯鍒跺埌鎵归噺鐢熶骇锛岀牬瑙ｇ數鍔涜兘婧?#8221;澶т欢闅鹃”鏈€鍏堝嚭鐜板湪涓夊笣绉戞妧鑲′唤鏈夐檺鍏徃銆?/p> ]]>