Metal injection molding (MIM) is a typical product of cross-disciplinary, integrating two different processing technologies (plastic injection mold and powder metallurgy). It makes designer get rid of tradition and gets low-cost and heterogenic stainless steel, nickel, iron, copper, titanium and other metal parts via plastic molding. Through this method, designer can have freedom of design.
MIM flow chart :Firstly , the metal powder and the organic binder are mixed into the homogenous feed under certain temperature ; then feedstock is injected into the cavity of the mold by the injection molding machine in the state of heating and plasticiing . Froming billet ,and then through chenical or solvent extraction methed degreasing treatment , the final densification by sintering to be the final product.
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 producs has uniform density, good finish , the surface roughess can be acheived Ra 0.8-1.5um. , 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 qualty,reliable preformane ,the relative density to products up t0 95% to 98%, which can be carburizing ,quenching, rempering and ohter heat terament ,product strength ,hardness ,elongation are good.
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