Invention Grant
- Patent Title: Wear-resistant sintered contact material, wear-resistant sintered composite contact component and method of producing the same
- Patent Title (中): 耐磨烧结接触材料,耐磨烧结复合接触部件及其制造方法
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Application No.: US10745981Application Date: 2003-12-29
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Publication No.: US07094473B2Publication Date: 2006-08-22
- Inventor: Takemori Takayama , Kazuo Okamura , Yoshikiyo Tanaka , Tetsuo Ohnishi
- Applicant: Takemori Takayama , Kazuo Okamura , Yoshikiyo Tanaka , Tetsuo Ohnishi
- Applicant Address: JP Tokyo
- Assignee: Komatsu Ltd.
- Current Assignee: Komatsu Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Rader, Fishman & Grauer PLLC
- Priority: JP2002-380203 20021227
- Main IPC: B22F7/02
- IPC: B22F7/02

Abstract:
A wear-resistant iron-based sintered contact material is provided which is sintered by powder sintering so as to have high density, high seizure resistance and wear resistance. A wear-resistant iron-based sintered composite contact component composed of the wear-resistant iron-based sintered contact material sinter-bonded to a backing metal and its producing method are also provided. To this end, at least Cr7C3-type carbide and/or M6C-type carbide which have an average particle diameter of 5 μm or more are precipitately dispersed in an amount of 20 to 50% by volume within an iron-based martensite parent phase which has a hardness of HRC 50 or more even when tempered at up to 600° C.
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