On May 20, the 23rd China International Foundry Expo (Metal China) was grandly opened at the National Convention and Exhibition Center in Tianjin, and Beijing SANDI Technology Co., Ltd. exhibited with large-size 3D casting solutions.

2025National Foundry Equipment Innovation Award Product: 2.5m 3DP Sand Printer 3DPTEK-J2500

The award-winning product 3DPTEK-J2500 is an industrial-grade sand printer independently developed by SANDI Technology, with a molding size of 2500×1500×1000mm and a printing accuracy of ±0.3mm, which is suitable for the needs of large castings in the fields of electric power and energy, ships, pumps and valves, and automobiles. It adopts piezoelectric inkjet technology, high-resolution inkjet system and special binder formula to realize high-precision, low-cost integrated molding of large-size complex structure castings, avoiding the loss of precision of traditional splicing process. Through digital moldless molding technology, it can reduce mold development costs and waste emissions, and help enterprises reduce costs and increase efficiency and sustainable development.

Cutting-edge casting technology: 3D printing of oversized sand molds without sandboxes

In the May 19th annual meeting of the China Foundry Association "casting cutting-edge technology" forum, Beijing Three Emperor Technology Co., Ltd. 3D equipment marketing department general manager Jiang Qingjie published "no sand box oversized 3D printing casting sand mold technology and equipment," the theme of the report, focusing on the analysis of the company in the field of ultra-large casting technology breakthroughs in the field of manufacturing.

Figure: Jiang Qingjie, general manager of 3D equipment marketing department of SANDI Technology, delivered a theme report of "sandbox-free super-large-size 3D printing casting sand mold technology and equipment".

For aerospace, electric power energy, ships, pumps and valves and other fields of large castings have long faced low efficiency, high cost, inconsistent quality and other pain points, three emperor technology launched 3DPTEK-J4000 sand box without sand box large size 3D printing sand molding equipment. The equipment adopts sandless box flexible area molding technology, support local printing, the maximum molding size of 4 meters, the core advantages include:

Integrated molding of complex structures: Through high-precision nozzles and intelligent algorithms, it realizes one-time molding of thin-walled, multi-dimensional curved surfaces and complex inner cavities (such as spiral cooling water channels), breaking through the design limitations of traditional processes;

High efficiency and low cost: Compared with the traditional split casting, the production cycle is shortened by more than 50%, and the delivery time is compressed from 60 days to 15 days for a 1.25-ton aluminum alloy casting, for example;

Economy optimization: equipment costs are benchmarked against 2.5m class models, and the open source material process supports on-demand adjustment of binder and sand to further reduce overall costs.

Figure: 4-meter 3DP sand printer 3DPTEK-J4000

Equipment order hotline:

Meanwhile, in order to meet diversified market demands, based on 30 years of experience in powder laying technology, SANDI Technology independently develops full-size 3DP casting sand and SLS casting sand/wax series printers from millimeter to meter scale, which can meet the manufacturing needs of products of different sizes and materials, and help users maximize their productivity at a lower unit cost and a shorter delivery time.

Figure: 1.6m, 1.8m 3DP casting sand printer

Figure: SLS Casting Sand/Wax Printer

Equipment order hotline:

3DCasting Services

SANDY TECHNOLOGY's unique "SLS coated sand molding + 3DP resin sand molding"Combined sand manufacturing process (typical application scenarios of additive manufacturing of the Ministry of Industry and Information Technology), which can realize high-precision and high-strength integrated casting molding of complex structural parts (large-size, thin-walled, fine piping, etc.).

3DPSand casting processIt is mold-free and supports integrated molding of large-sized and complex structural parts in small and medium batches.

SLSSand casting processThe strength of the sand core reaches 4-6Mpa, and the precision is 0.1-0.2mm, which is suitable for complex pipeline and oil pipeline products.

SLSWax fine casting processThe company is mold-free, realizing rapid precision casting of thin-walled, large-sized and complex structural products.

Through the 3D casting factories and printing service centers in Xianyang, Shaanxi, Daiming, Hebei, Pingdingshan, Henan, Yulin, Guangxi, Rizhao, Shandong, Linzhou, Henan, Tongling, Anhui, etc., SANDI Technology has established the capability of full-size, multi-material, full-chain rapid manufacturing services, which can provide users in the fields of aerospace, electric power and energy, ships, pumps and valves, automobiles, rail transportation, construction machinery, etc., aluminum alloy, copper alloy, cast iron, aluminum alloy, copper alloy, cast iron, magnesium alloy, high-temperature alloy, titanium alloy and other materials, as well as casting sand, wax 3D printing services.

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3DEnabling Casting

Through the merger and acquisition and self-built foundry, SANDI Technology has opened up the "3D printing + casting" process to form a replicable and popularized demonstration model, helping traditional foundries to transform and upgrade, realizing green, intelligent, high-end casting, and practicing the national requirements for the development of new quality productivity. At present, three emperor technology 3D casting overall solution has been in the casting production in the mature commercialization of the application, take the lead in the introduction of 3D casting foundry, has established a green, flexible, high-end rapid casting capabilities, to achieve productivity, capacity, revenue doubling growth, but also significantly improve the production efficiency and quality of high-end complex castings, to broaden the scope of the business, increased to seize the market opportunities, the bottom line. Successfully transformed into a green fast casting demonstration plant.

[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.