There are many ways to turn loose powder into a complete workpiece. One of these processes is called "a revolution in manufacturing" by foreign media, and that is Powder Injection Molding (PIM). Although many people may not fully understand the potential of this technology, the fact is that powder injection molding is already a global industry with annual sales of more than $ 2 billion and a very strong growth rate.
As a near net forming process for producing complex parts at a lower cost, powder injection molding integrates powder metallurgy and injection molding processes, and is suitable for near net forming of metal, alloy, ceramic, composite materials, etc. According to the classification of powder, it can be divided into two types: metal injection molding (MIM) and ceramic injection molding (CIM).
The powder injection molding process includes: solid powder and organic binder are uniformly mixed, granulated and injection-molded by an injection machine in a heated state, and the organic binder in the molding is removed by chemical or thermal decomposition. A dense product is obtained after sintering.