Why MIM Suitable for Small Size Product?

MIM process joins a large number binder. Its sintering after removing binders is similar to traditional powder metallurgy sintering. Taking fine powder as raw material can meet the requirement of densification, which results in cost increase greatly. If large size products still adopt fine powder, it will be not competitive. At the same time, due to product size increasing, degreasing time increased accordingly, and the defect occurrence probability increase greatly. In addition, product size increased, injection molding time increased so as for higher requirements for rheological properties of binder in order to carry powder quickly to different parts of the cavity. All above are factors restricting MIM products to larger size. Hence MIM technology has been confined to smaller size, high accuracy product.

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