Title:
浸炭高周波焼入部品
Document Type and Number:
Japanese Patent JP5129564
Kind Code:
B2
Abstract:
A component is subjected to carburizing treatment and then induction-hardening treatment, and is formed from steel consisting essentially of, by mass, C: minimum 0.08% and under 0.3%; Si: maximum 2.0%; Mn: from 0.2% to 3.0%; P: maximum 0.03%; S: from 0.005% to 0.05%; Ni: maximum 1.5%; Cr: maximum 3.0%; Mo: maximum 1.0%; O: maximum 0.0025%; and N: from 0.005% to 0.03%; and further including either or both of, by mass, Al: from 0.005% to 0.05%, and Ti: from 0.005% to 0.05%; and still further including either or both of, by mass, V: maximum 0.3%, and Nb: maximum 0.3%; and a residual portion includes Fe and unavoidable impurities. The hardness of a surface layer is at least 55 HRC and the hardness of a core part is from 20 to 50 HRC. A metal structure of the core part does not include a martensite structure.
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Inventors:
Takao Taniguchi
Hisao Shirai
Takuji Obayashi
Kazuaki Okada
Hideo Kanizawa
Shuji Ozawa
Hisao Shirai
Takuji Obayashi
Kazuaki Okada
Hideo Kanizawa
Shuji Ozawa
Application Number:
JP2007514830A
Publication Date:
January 30, 2013
Filing Date:
April 28, 2006
Export Citation:
Assignee:
Aisin AW Co., Ltd.
Nippon Steel & Sumitomo Metal Corporation
Nippon Steel & Sumitomo Metal Corporation
International Classes:
C22C38/00; C21D1/06; C21D7/06; C21D9/32; C22C38/60; C23C8/22
Domestic Patent References:
| JPH05148535A | 1993-06-15 | |||
| JP2003193137A | 2003-07-09 | |||
| JPS6436779A | 1989-02-07 |
Attorney, Agent or Firm:
Yoshiyasu Takahashi
Tamiwa Iwakura
Tamiwa Iwakura