Introduction：2023 Formnext+PM South China Shenzhen International Additive Manufacturing Powder Metallurgy and Advanced Ceramics Exhibition was held in Shenzhen International Convention and Exhibition Center on August 29-31, 2023, SANDY Technology participated in the meeting and demonstrated its independent BJ binder jet metal/ceramic rapid prototyping solutions, the company's deputy general manager of the product market, Dr. Hao Zhao in the Dr. Zhao Hao, Vice General Manager of Product Marketing of the company, made a keynote report entitled "Industrialization Application of BJ Binder Jet Metal/Ceramic Forming Technology" in the "BJ Binder Jet Forming Technology Forum", sharing the progress of SUNIX in binder formulation design, equipment performance improvement, degreasing sintering process development, application development, etc., and explaining the difficulties in the application of BJ technology and the application problems of BJ technology through actual cases and scenarios. application difficulties and market prospects of BJ technology, and discussed its industrialization path.

BJ binder jet molding is a high-efficiency, high-precision "line scanning" 3D printing 2.0 technology, which follows the traditional powder metallurgy industry's material system and sintering process, low cost, high degree of material standardization, to achieve high efficiency, high quality, low-cost 3D printing, to solve the problem of 3D printing 1.0 "slow and expensive", is an important technology path towards mass production and industrialization. The problem of "slow and expensive" is an important technical path for 3D printing to move towards mass production and industrialization. In recent years, with the enrichment of material systems and breakthroughs in technology processes, BJ binder jetting technology has become one of the fastest growing technologies. According to APO, the global binder jetting technology market sales reached $101.2 million in 2022. According to SmarTech's forecast, by 2030, BJ binder jetting technology will realize an output value of 54 billion USD (about 350 billion RMB).

At present, the development and application of binder jetting technology based on the formation of a strong development trend, domestic and foreign 3D printing major manufacturers are optimistic about the market potential of the technology, are actively exploring the development of related technology processes and industrialization applications.

The leading domestic 3D printing additive manufacturing equipment and service provider Beijing SANDI Technology Co., Ltd. has mastered 3D printing 2.0 core equipment, materials and process technology on the basis of years of 3D printing 1.0 equipment and applications, and formed the competitive ability of 3D printing green rapid casting and powder metallurgy molding. At present, breakthroughs and progress have been made in BJ equipment development, binder formula process design, degreasing and sintering process development, application development and other aspects. It has completed the development of Longyuan molding R&D type R series, production type P series and other equipments, and more than ten equipments have been installed and used; it has completed the development of systematic material processes for iron-based materials, non-ferrous metals, high-temperature alloys, refractory metals, ceramic materials, inorganic salts, polymers, food materials, etc.; and it has also promoted the CAE simulation and prediction solution to cope with the demand of agile manufacturing of multi-species and small batch. In addition, SANDI Technology has jointly established a joint laboratory of additive manufacturing technology with Shenzhen Vocational and Technical University, and at the same time, it has joined hands with the relevant teams from Tsinghua University Research Institute in Shenzhen, Shanghai Jiaotong University and other research institutes to jointly carry out basic technical research on materials, processes and applications such as binder jet molding, and to promote the industrialization and application of the research results.

Longyuan R&D R series equipments are designed for the scientific research needs of universities, scientific research institutes and enterprise R&D organizations, which can achieve the highest printing accuracy of ±0.1mm, the highest resolution of 1200 DPI, the highest printing speed of 2.5L/h, and the highest green blank density of 67%. The equipment is easy to operate, can be flexible to replace the powder material and binder ink, simple structure, easy to maintain, and effectively protect the scientific research efficiency and experimental repeatability. Adopting self-developed industrial control software and data processing software, the process parameters are highly open and independently adjustable, which is not only compatible with a wide range of materials, but also more suitable for exploratory research and rapid preparation of new materials iteration.

Longyuan molding production P series equipment for MIM, mold, tooling and other industries for rapid flexible manufacturing needs, the use of top-feeding powder single-cylinder structure, equipped with V + precision powder drop system, dual-roller composite high density powder spreading system, automatic cleaning of the nozzle, the built-in air purification system, and other devices, easy to operate, can be flexibly replaced with the powder material and the binder ink, and effectively protect the production efficiency. It can realize the highest ±0.1mm printing accuracy, the highest 1200DPI resolution, the highest 2.5L/h printing speed and the highest 67% green blank density. High-end production equipment is also equipped with a high-precision molding cylinder transfer vehicle, molding cylinder can be quickly transferred and quickly replaced, saving curing waiting time; the highest printing speed of up to 3.6L / h, the relevant technical indicators up to the international advanced level.

On the basis of the equipment, SANDI Technology has successfully developed AFS 5 series of more than 20 kinds of water-based binder and organic solvent binder for matrix materials. Meanwhile, it has the ability of independent design of binder formulations, which can meet the development needs of customers for new materials and new applications of customized binders.

BJ binder jet metal/ceramic molding technology as a low-cost, high-efficiency batch 3D printing technology, is expected to be in the automotive, hardware, electronics, tools, molds, cutting tools, medical equipment, sports equipment, high-end equipment manufacturing, energy industry and other industries to form a batch of industrialized applications, with a market potential of hundreds of billions of dollars. the MIM industry, which can be achieved in small and medium batches of products without the mold rapid manufacturing, shortening the Product design verification cycle, can also be used for rapid production of MIM molds and sintering jigs. In the mold industry, mold inserts with embedded cooling channels can be manufactured to achieve precise and rapid cooling at low cost, speed up production, reduce product deformation and improve product quality. In the tooling industry, high-performance tool bodies and shanks with embedded complex cooling water paths can be manufactured to improve product performance and cutting efficiency. SANDI Technology has carried out related application development in industrial molds, cutting tools, 3C electronic and other metal products, and complex, shaped large size ceramic products and other fields.

[About SANDI TECHNOLOGY
Beijing SANDI Technology Co., Ltd. is a high-tech enterprise focusing on 3D printing green rapid manufacturing equipment and services, the business covers the development and production of 3D printing equipment, rapid manufacturing services for finished metal parts, the research and development and production of 3D printing raw materials, and has established a more complete 3D printing rapid manufacturing industry chain, which is widely used in the aerospace and military industry, automotive, rail transportation, ship pumps and valves, Engineering machinery, education and scientific research, sculpture and cultural creation, rehabilitation and medical care and other industries.