To what extent has powder injection molding technology developed in China?

The process is as follows: fine metal or ceramic powder and polymer forming agent are mixed at a certain temperature to form a uniform fluid with viscoplasticity, which is injected into a mold by an injection machine for forming, and then the forming agent is removed, and then sintered compactly to make various parts. Its technological process is as follows: powder+binder → mixing → granulation → injection molding → degreasing → sintering → (post-treatment) → product powder injection molding technology has the following characteristics: (1) it can produce metal and ceramic parts with complex shapes like plastic products; (2) complex parts are formed at one time, with good finish and high precision, without subsequent processing or less subsequent processing; compared with traditional machining and precision casting, the production cost is lower; (3) the product has high density and structure. Materials suitable for powder injection molding technology are: alloy steel, stainless steel, nickel-based alloy, magnetic material, tungsten alloy, cemented carbide, fine ceramics and so on. Powder injection molding technology is suitable for instruments, watch cases and bracelets, toy jewelry, guns and ordnance, aerospace, machining tools and other fields. At present, Shanghai Fuchi High-tech Co., Ltd. has successfully applied powder injection molding tungsten steel technology to watch accessories. Compared with traditional pressed tungsten steel products, the products produced by the company with nonmagnetic tungsten steel powder have the characteristics of stable performance, uniform texture, bright surface after processing, no fog layer, no crystal spots and no sand holes.