COMPOSITE MEMBER AND ITS PRODUCTION

摘要

PURPOSE:To produce a securely joined composite member at a low cost by providing a recess having a specific shape to the joint surface of the metallic member at the time of joining the metallic member and metal powder sintered body. CONSTITUTION:The recess 5 is provided at >=1 points in part of the joint surface 4 where the metallic member 1 having >=35kg/mm<2> yielding point or yield strength is joined to the composite sintered metal body. The depth of the recess 5 is specified to >=1mm and the angle alpha thereof with the perpendicular face of a corner part 6 to 1-45 deg.. Such metallic member 1 with the recess 5 faced upward is inserted into a lower punch 8 of a metallic mold 9 and metal powder 3 is packed on the metallic member 1. The powder is then pressurized and compressed by an upper punch 7 and a lower punch 8. The composite body composed of the metallic member 1 and the metal powder molding 3 is thereby obtd. This composite body is sintered in a vacuum atmosphere, by which the securely joined composite member is obtd.