Analysis of the principle of metal powder injection molding technology
Nov 24, 2022
Analysis of the principle of metal powder injection molding technology
Zhongwei Precision Powder is a modern production enterprise integrating research, development, production and sales of metal powder injection molding, metal powder injection molding, European and American oil bearing plants, stainless steel powder metallurgy products, metal powder metallurgy manufacturers, powder metallurgy oil bearing, stainless steel powder metallurgy products plants, automobile parts powder metallurgy gear wheels, oil bearing and other products.
Metal powder injection molding (MPI) is a new powder metallurgy near net molding technology, which introduces modern plastic injection molding technology into the field of powder metallurgy. The basic technological process is as follows: first, the solid powder and organic binder are uniformly mixed, granulated and injected into the mold cavity for curing and molding by the injection molding machine under the heating and plasticizing state (~150 ℃), then the binder in the molding body is removed by chemical or thermal decomposition methods, and finally the final product is sintered and densified.
Compared with traditional technologies, metal powder injection molding technology has the characteristics of high precision, uniform tissue, excellent performance, low production cost, etc. Its products are widely used in electronic information engineering, biomedical devices, office equipment, automobiles, machinery, hardware, sports equipment, clock and watch industry, weapons, aerospace and other industrial fields. Therefore, it is universally believed that the development of this technology will lead to the revolution of part forming technology, which is called "the hottest part forming technology today" and "the forming technology of the 21st century".
The metal powder injection molding (MIM) process of metal powder injection molding uses micron sized fine powder, which can not only accelerate the sintering shrinkage, help improve the mechanical properties of materials, extend the fatigue life of materials, but also improve the stress corrosion resistance and magnetic properties.
