发明名称 |
RAIL AND PRODUCTION METHOD THEREFOR |
摘要 |
A rail provided by the present invention has: a prescribed chemical component; a Mn/Cr value being a ratio between the Mn content and the Cr content within the range of 0.30-1.00; at least 98 area% of the composition being bainite, in an area to a depth of 10 mm from a head contour surface comprising a head top section surface and a head corner section surface; and an average hardness of the area from the head contour surface to a depth of 10 mm that is within the range of 380-500 Hv. |
申请公布号 |
CA2946541(A1) |
申请公布日期 |
2015.12.03 |
申请号 |
CA20152946541 |
申请日期 |
2015.05.29 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
UEDA, MASAHARU;MIYAZAKI, TERUHISA;TANAHASHI, TAKUYA |
分类号 |
C22C38/00;C21D8/00;C21D9/04;C22C38/54 |
主分类号 |
C22C38/00 |
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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