METALLIC POWDER SINTERED COMPACT AND PRODUCTION OF METALLIC POWDER SINTERED COMPACT

摘要

PROBLEM TO BE SOLVED: To provide a metallic powder sintered compact having high accuracy free from deformation at a low cost. ;SOLUTION: The sintered parts 1 which are the metallic powder sintered compact and obtd. by degreasing the molding of a kneaded mixture composed of metallic powder and org. binder under prescribed sintering conditions, then inserting a ceramic liner 3 consisting of a material which has the coefft. of thermal expansion larger then the coefft. of thermal expansion of the raw material metal of the metallic powder and is not decomposed by the sintering conditions under which the metallic powder to be sintered is sintered, and has the shape and size corresponding to the shape and size after the sintering shrinkage of a hole part 2 formed at this molding into this hole part 2, then removing this liner 3.;COPYRIGHT: (C)1997,JPO