In recent years, with the development of manufacturing industry and technological progress, 3D casting technology is gradually showing its unique application value in various fields. Especially in the field of ultra-large castings manufacturing, the application of 3D casting technology by the domestic and foreign head manufacturers in related fields of concern and favor.

According to the information, Tesla, BMW, BYD and other car companies are already using 3DP sand mold printing technology. Tesla uses 3D sand casting technology to quickly and cost-effectively verify the design and engineering specifications of giant molds. A concept model of Mercedes-Benz uses 3D sand casting to realize the casting of single large-size parts of the rear subframe, suspension bracket and other structures. Domestic BYD new battery company is exploring 3D printing technology in the new energy vehicle prototyping, automotive parts and thermal management systems and other areas of forward-looking application development.

In the aerospace field, 3D sand casting technology can be used to manufacture engine parts, spacecraft structural parts, power units and other important parts. Can effectively solve the oversized, multi-dimensional curved surfaces, complex structure of the workpiece molding problems, in small quantities of large size mold manufacturing as well as special industry mold iterative upgrading research and development on the traditional manufacturing process can not be compared with the advantages. In the field of energy and power, 3D casting technology can be applied to large-size pressure-resistant complex cavity structure, large thin-walled lightweight parts and other manufacturing.

It can be seen that large casting manufacturing has a wide range of application needs in the fields of aerospace, shipping, pumps and valves, automotive (new energy), energy power (electrical), industrial machinery (robots/UAVs), rail transportation, 3C electronics, sculpture, education and research, rehabilitation and medical care, etc., and the traditional manufacturing methods are facing a lot of challenges, especially in the R&D trial stage of new products. For example, due to the huge size of castings, they usually need to be split into parts for casting and then integrated by welding, which not only increases the design burden, time and cost, but also easily leads to welding defects, affecting product quality and consistency. At the same time, modifying the mold is also a challenge.

The 3D casting technology can give a better solution for many characteristics of large castings:

1. Complex structure design optimization. 3D printing technology can manufacture complex shapes and structures that are difficult to achieve with traditional processes, further expanding the design space and providing more innovative possibilities.
2. Lightweight products. 3D printing technology can achieve local optimization of materials and hollow design, so that parts can maintain sufficient strength, but also to reduce weight.
3. Function integration integration. In the automotive industry, 3D printing technology has been heavily used in the integrated design, the same parts to achieve multiple parts, a variety of functions of the integration.
4. Batch customization. Batch customization of large castings using traditional processes to open the mold high cost, long cycle, 3D printing can save time and cost of opening the mold, improve efficiency and cost savings.

In order to meet the market demand for large-scale casting manufacturing, 3D printing equipment and rapid manufacturing service provider Beijing SANDY Technology Co., Ltd. was the first in China to launch a self-developed large size 3DP sand printer 3DTEK-J4000, the device breaks through the traditional processing size limitations, the maximum molding 4 meters of sand. Equipment creatively used without sand box flexible area molding technology, breaking the equipment molding size, the larger the price of the equipment wildly soaring strange phenomenon, making 4 meters or larger size of the equipment, and 2.5 meters of the price difference between the equipment to become possible. Economy, flexibility, with lower unit cost and shorter delivery time, cost-effective realization of oversized sand molding manufacturing, and can be customized according to user needs on-demand expansion of the printing platform to meet the production needs of the 10m + level (6m/8m/10m equipment has been in the synchronization of accepting bookings), to help users maximize productivity. (Foreign friends can click here to learn about our )

The equipment adopts international first-line high-precision, high-throughput nozzle, with high-performance molding process and intelligent algorithm technology, which can provide users with excellent molding accuracy, balanced and controllable casting performance and excellent reliability. Equipped with high-speed vibration type powder spreading system, automatic powder circulation system and self-developed equipment control software, etc., the sand mold has good dimensional accuracy, high strength, low outgassing and excellent surface quality; the equipment is easy to operate, stable and reliable, with printing warning prompts, and the "visual monitoring and intelligent system" can realize real-time monitoring and record traceability of the whole process; the open-source material process can provide users with excellent casting performance with balanced control and excellent reliability. Traceability of records; open-source material technology, can be adjusted according to the user's needs; supporting high-performance resin binder, curing agent, cleaning agent, to ensure the quality and stability of molding.

A user giant, large plane, thin-walled structural components, the use of traditional welding and casting process is difficult to meet the requirements, the use of three emperor technology 3D casting process, 45 days to deliver two finished products, finished product size of 1800mm × 2000mm, wall thickness of 5.5mm.
A customer's giant aluminum alloy casting weighing 1.25 tons, with a diameter of 900mm at the lower end, 1200mm at the upper end, and a height of 1850mm, had high costs and long lead times in traditional manufacturing methods, and was unable to achieve the required complex structure. The delivery was completed in only 15 days by using 3D casting process of SANDI Technology, which saved a lot of time and cost for the customer.
The lightweight, large-surface, thin-walled new energy commercial truck subframe delivered to the customer by SANDI Technology weighs about 27KG, with a wall thickness of 5.5mm, and is made of high-quality aluminum T6061. Traditional casting requires 1-2 months for mold manufacturing alone, and the cost is high. The 3D casting process of SANDI Technology will complete the delivery of finished products in 2 weeks.

[About SANDI TECHNOLOGY
(3D Printing Technology, Inc.) is a 3D printing equipment and rapid manufacturing service provider, national high-tech enterprises, specializing in new enterprises, the Ministry of Industry and Information Technology additive manufacturing typical application scenarios supplier. It is also the innovator of "SLS+SLM+3DP+BJ" 3D printing technology, and its business covers the research and development and production of 3D printing equipments, 3D printing raw materials, rapid manufacturing services for finished metal parts, and technical support services for 3D printing processes, etc. It has established a complete 3D printing rapid manufacturing industry chain, which is widely used in the following areas Aerospace, ships, pumps and valves, automotive (new energy), energy power (electrical), industrial machinery (robots / drones), rail transportation, 3C electronics, sculpture, education and scientific research, rehabilitation and medical care and other industries.