Methods
Powder Injection Molding (PIM) is a low-cost method of shaping advanced materials, including hardmetals. The process begins with metal powder, to which we add a proprietary organic binder system. The result is a mixture which can be injection molded at relatively low temperature and pressure.
The injection molded green
part is then debound to extract
almost all of the organic material, leaving behind a porous metal
brown
part. These pores are eliminated by hot-consolidation or
sintering at high temperature.
The final parts are individually inspected to ensure they have the right dimensions and shape. Other tests can be used to verify the purity and quality of the parts before they are shipped.
Key Terms
- Powder Injection Molding (PIM)
- The method we use to shape hardmetals into complex parts
- Feedstock
- Mixture of metal powder
and an organic binder - Injection Molding
- Pressure forces molten feedstock into a cavity, where it hardens.
- Green Part
- A part molded from feedstock
- Debinding
- The removal of almost all binder
- Brown Part
- A part that has been debound
- Sintering
- Thermal collapsing of pores