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 ±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.