公开(公告)号：US11951547B2

公开(公告)日：2024-04-09

申请号：US16627682

申请日：2018-10-23

Applicant: TPR CO., LTD.

Inventor： Yoshio Bando ,  Fumiya Ito ,  Kenichi Harashina

IPC: B22F5/00 ,  B22F3/16 ,  C22C38/16 ,  F01L3/08

CPC classification number: B22F5/008 ,  B22F3/16 ,  C22C38/16 ,  F01L3/08 ,  B22F2301/10 ,  B22F2301/35 ,  F01L2301/00 ,  F01L2303/00 ,  B22F2998/10 ,  B22F1/17 ,  B22F1/09 ,  B22F3/02 ,  B22F3/10

Abstract: Provided are a valve guide made of an iron-based sintered alloy excellent in wear resistance and thermal conductivity, and a method of producing the same. Specifically, provided are a method of producing a valve guide made of an iron-based sintered alloy, the method including the steps of: molding raw material powder including diffusion-alloyed powder including core iron powder and Cu bonded to the core iron powder through diffusion to obtain a molded body; and sintering the molded body, to thereby produce a valve guide made of an iron-based sintered alloy, and a valve guide produced by the production method.