Technology
MIM Process Flow Chart:
MIM Technology:
MIM technology is the conbation of plastic injection molding and powder metallurgy and it is a new metal processing technology. In recent years, MIM as a new powder metallurgy has a rapid development in industry and it was recongnised as the " The most popular of forming technology in the 21st century.
MIM product features:
1. MIM parts has high degree of freedom in shapes like plastic products,
and complex metal parts can be produced at one time.
2. MIM products has uniform density, good finish, the surface roughness can
be achieved Ra 0.80 ~ 1.6μm, weight range of 0.1 ~ 200g. Dimensional accuracy
(± 0.1% ~ ± 0.3%), generally it has no follow-up processing.
3. MIM is applicable to a wide range of materials,
wide application areas, high utilization of raw materials, a high degree of
automation, simple process can achieve continuous mass production.
4. Stable quality, reliable performance, the
relative density of products up to 95% to 99%, which can be carburizing,
quenching, tempering and other heat treatment. Product strength, hardness,
elongation are good.
MIM Process:
Firstly, the metal powder and the organic binder are mixed into the homogeneous feed under certain temperature; then feedstock injected into the cavity of the mold by the injection molding machine in the state of heating and plasticizing. Forming billet, and then through chemical or solvent extraction method degreasing treatment, the final densification by sintering to be the final product.