公开(公告)号：US20130192414A1

公开(公告)日：2013-08-01

申请号：US13826320

申请日：2013-03-14

申请人： HONDA MOTOR CO., LTD.

发明人： Masaaki Sato ,  Minoru Takada ,  Kentaro Takada ,  Zenji Iida ,  Ryosuke Kogure

IPC分类号： F16C7/02 ,  B22F3/17

CPC分类号： F16C7/02 ,  B21J5/002 ,  B21K1/766 ,  B22F3/17 ,  B22F2998/10 ,  C22C33/0264 ,  C22C38/04 ,  C22C38/16 ,  F16C7/023 ,  F16C9/045 ,  Y10T74/2142 ,  B22F3/10

摘要： A member produced by powder forging which retains machinability and improved fatigue strength without having an increased hardness and can retain self conformability after fracture splitting; a powder mixture for powder forging; a process for producing a member by powder forging; and a fracture splitting connecting rod obtained from the member produced by powder forging. The member produced by powder forging is one obtained by preforming a powder mixture, subsequently sintering the preform, and forging the resultant sintered preform at a high temperature. The free-copper proportion in the sintered preform at the time when the forging is started is 10% or lower, and the member obtained through the forging has a composition containing, in terms of mass %, 0.2-0.4% C, 3-5% Cu, and up to 0.4% Mn (excluding 0), the remainder being iron and incidental impurities, and has a ferrite content of 40-90%.