MIM manufacturing technology process characteristics and advantages

MIM manufacturing technologies are not competing with traditional processing methods, but to make up for the traditional processing method is technically inadequate or can not make the defect. MIM manufacturing technology can play to their strengths in the field of traditional processing methods on the part produced. MIM technology in the manufacture of components has the technical advantage can be shaped structural parts highly complex structures.

Injection molding technology by injection machine injection molding product blank, ensure that the material fully fill the mold cavity, thus ensuring the realization of the part of highly complex structures. In the past, traditional processing techniques made before assembly into individual components and then combined manner, in the use of MIM manufacturing technologies may be considered integrated into a complete single part, greatly reducing step, to simplify the processing procedures. Compare products size high precision MIM and other metal processing methods, you do not have to secondary processing or finishing just a few.

  

Injection molding process can be directly molded thin-walled, complex structure, product structure is close to the final product requirements, part size tolerance is generally maintained at about ± 0.1- ± 0.3. Particularly important especially difficult to reduce the machining of carbide tooling costs, reduce precious metal processing loss. Products uniform microstructure, high density, good performance

  

In the pressing process because of friction with the powder and die wall between the powder and the powder so that compacting pressure distribution is very uneven, it led to the suppression of rough uneven microstructure, which would result in the suppression of powder metallurgy uneven shrinkage during the sintering process, and therefore had to reduce the sintering temperature to reduce this effect, so that products large porosity, densification and poor, low density, seriously affect the mechanical properties of products.

Conversely injection molding process is a fluid molding process, the presence of adhesive to protect the powder evenly arranged so as to eliminate the uneven rough on the microstructure, and thus the density of the sintered products can reach the theoretical density of the material. Under normal circumstances pressing product density can only reach 85% of the theoretical density. High density products can increase strength, toughness enhanced ductility, improved electrical and thermal conductivity, magnetic properties can be improved. High efficiency, easy to achieve high-volume and large-scale production.