Binders Selection of MIM
What is metal injection molding (MIM)? Metal injection molding (MIM), sometimes referred to as Powder Injection Molding, merges two established technologies, plastic injection molding and powdered metal. It combines the strength and integrity of metal with the design flexibility of the injection molding process to offer simple solutions for highly complex part geometries. The Powder Injection Molding process is typically explained as four unique processing steps (Compounding, Molding, Debinding and Sintering) to produce a final part that may or may not need final finishing operations.
The feedstock of metal injection molding is composed of metal powders and plastic binders. The reason of adding to binders is to bond the metal powders, and make the feedstock flow well when heated. So selection of binders, the flow carriers of metal powders, is very important for metal injection molding.
The keys of binders selection:
1, Manufacturer should use small quantity of binders as soon as possible, to achieve satisfactory flowability.
2, Binders won’t react with metal powders in the removing process.
3, It should be easy to eliminate.
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