发明授权
- 专利标题： Railway wheel and manufacturing method of the railway wheel
- 专利标题（中）： 铁路车轮和铁路车轮的制造方法
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申请号： US787218申请日： 1997-01-22
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公开(公告)号： US5899516A公开(公告)日： 1999-05-04
- 发明人: Takashi Fujimura , Manao Anjiki , Taizo Makino , Yoshihiro Daitoh
- 申请人： Takashi Fujimura , Manao Anjiki , Taizo Makino , Yoshihiro Daitoh
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Metal Industries, Ltd.
- 当前专利权人： Sumitomo Metal Industries, Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX8-009204 19960123
- 主分类号： B60B17/00
- IPC分类号： B60B17/00 ; C21D1/84 ; C21D9/34 ; C22C38/00 ; C22C38/18 ; B60B37/00
摘要：
A wheel has both wear resistance and heat-crack resistance sufficient for use in a high-speed railway vehicle. The chemical composition of a base steel comprises 0.4 to 0.75 % C, 0.4 to 0.95% Si, 0.6 to 1.2% Mn and less than 0.2% Cr. The wheel has a pearlitic microstructure in a region of at least 50 mm in depth from the tread surface of the wheel. When the tread of the wheel is quenched, a particular cooling process is applied in order to obtain the pearlitic structure.