There are roughly two types of powder metallurgy parts production way: compression molding and injection molding.

There are many types of compression molding, and in actual industrial applications, compression molding is widely used. Warm pressing, cold sealing steel mold pressing, cold isostatic pressing, and hot isostatic pressing are all compression molding.

Compression molding, filling the mold with dry powder relying on gravity, and extruding molding by external pressure.

Injection molding uses very fine powder and a large amount of thermoplastic binder to be injected into the mold.There are also two special powder metallurgy parts processing methods: powder forging and powder rolling.

The production of powder metallurgy parts must start from the mold.The basic principle of powder metallurgy mold design is: give full play to the technological characteristics of low powder metallurgy, no cutting processing and near-formed shape, to ensure that the blank meets the three basic requirements of geometric shape and size, accuracy and surface roughness, density and distribution. , Whether it is a pressing die, a finishing die, a compound press die, and a forging die all require this. Among them, the density and distribution of pressed billets and forging billets are the main technical indicators in mold design; reasonably design mold structure and select mold materials, so that mold parts have sufficiently high strength, rigidity and hardness, and have high Wear resistance and service life to meet the requirements of safety, reliability and ease of operation of high-pressure working vessels; meanwhile, pay attention to the machinability and interchangeability of mold structure and mold parts, and reduce mold manufacturing costs