发明名称 |
BEARING PART, HEAT TREATMENT METHOD THEREOF, AND ROLLING BEARING |
摘要 |
A bearing part having long life against rolling contact fatigue, excellent in anti-crack strength and restricted in an increase of aged dimensional change, a heat treatment method thereof, and a rolling bearing including the bearing part are obtained. Steel for a bearing part is subjected to carbonitriding at a carbonitriding temperature exceeding the A1 transformation temperature, and cooled to a temperature lower than the A1 transformation temperature. The steel is reheated to a temperature for quenching that is not lower than the A1 transformation temperature but lower than the carbonitriding temperature, and then quenched. |
申请公布号 |
US2012051682(A1) |
申请公布日期 |
2012.03.01 |
申请号 |
US201113291839 |
申请日期 |
2011.11.08 |
申请人 |
OHKI CHIKARA;NTN CORPORATION |
发明人 |
OHKI CHIKARA |
分类号 |
C21D1/18;F16C33/58;C21D1/78;C21D9/00;C21D9/36;C21D9/40;C22C38/00;C23C8/32;C23C8/80;F16C19/22;F16C33/30;F16C33/62 |
主分类号 |
C21D1/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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