Metal Powder Injection Molding (MIM) is a new type of powder metallurgy near net forming technology formed by introducing modern plastic injection molding technology into the field of powder metallurgy. The basic process is: firstly mix the solid powder and the organic binder uniformly, after granulating, inject it into the mold cavity with an injection molding machine under heating and plasticizing state (~150℃), and then use chemical or thermal The decomposition method removes the binder in the formed blank, and finally obtains the final product through sintering and densification. Compared with traditional technology, it has the characteristics of high precision, uniform organization, excellent performance, and low production cost. Its products are widely used in electronic information engineering, biomedical equipment, office equipment, automobiles, machinery, hardware, sports equipment, clocks and watches, Industrial fields such as weapons and aerospace. Therefore, it is generally believed that the development of this technology will lead to a revolution in the forming and processing technology of parts and components. It is known as "the hottest part forming technology today" and the "forming technology of the 21st century".