Development and analysis of MIM 17-4PH stainless steel small module gear
The use of metal powder injection molding(MIM)technology to produce small metal parts with com-plex geometric shapes,especially for transmission parts with similar and repeated features,such as small module gears,had certain advantages.As for the selection of metal gear materials,stainless steel 17-4PH could be used in-stead of MIM technology.The mechanical properties and corrosion resistance of this material are superior to those of traditional machined gears.In this paper,according to the characteristics of stainless steel 17-4PH,gears were made by MIM process and heat treated under different conditions(after sintering,H900,H900+annealing).After quality testing,there is a slight change,which is similar to the results of traditional hot rolled plates.MIM process could make complex gears,maintain the excellent dimensional accuracy of stainless steel 17-4PH,and improve me-chanical properties.
metal powder injection moldingMIMgearstainless steel 17-4PHheat treatmentH900
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