公开(公告)号：US20180326490A1

公开(公告)日：2018-11-15

申请号：US15974986

申请日：2018-05-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Nobuyuki SHINOHARA ,  Kimihiko ANDO ,  Toshiyuki KOSAI

IPC: B22F3/17 ,  B22F3/16

CPC classification number: B22F3/17 ,  B22F3/16 ,  B22F2301/10 ,  B22F2301/35 ,  B22F2302/40 ,  B22F2302/45 ,  B22F2998/10 ,  B22F2999/00

Abstract: A method of producing a sintered and forged member includes a mixing process in which a manganese-containing powder made of Fe—Mn—C—Si containing manganese as a main component, an iron powder made of Fe, a copper powder made of Cu, and a graphite powder made of graphite are mixed together to prepare a mixed powder; a molding process in which the mixed powder is compression-molded into a molded product; a sintering process in which, when the molded product is heated, copper derived from the copper powder and manganese contained in the manganese-containing powder are alloyed, the alloyed copper-manganese alloy is brought into a liquid phase state, and the molded product is sintered to produce a sintered product while elements of the copper-manganese alloy diffuse into an iron base of the molded product; and a process in which the sintered product is forged.