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1. (WO2017150604) METHOD FOR PRODUCING MACHINE COMPONENT

Pub. No.:    WO/2017/150604    International Application No.:    PCT/JP2017/008087
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Mar 02 00:59:59 CET 2017
IPC: B22F 3/24
B22F 1/00
B22F 3/02
F16C 33/12
Applicants: NTN CORPORATION
NTN株式会社
Inventors: YASHIRO Naoki
八代 尚樹
OOHIRA Kouya
大平 晃也
Title: METHOD FOR PRODUCING MACHINE COMPONENT
Abstract:
A method for producing a machine component having a radial crushing strength of 120 MPa or more, which comprises: a compression molding step for obtaining a powder compact 10 having a predetermined shape by compressing a starting material powder that is mainly composed of a metal powder capable of forming an oxide film, said metal powder having a pure iron powder content ratio of 95% by mass or more; and a film formation step for obtaining a reinforced powder compact 11, in which an oxide film 5 is formed between particles of the metal powder, by heating the powder compact 10 at a temperature that is less than the sintering temperature of the metal powder in an oxidizing gas atmosphere and having the metal powder react with the oxidizing gas.