| 发明名称 |
Pearlite-based high carbon steel rail having excellent ductility and process for production thereof |
| 摘要 |
This high-carbon pearlitic steel rail having excellent ductility, includes: in terms of percent by mass, C: more than 0.85% to 1.40%; Si: 0.10% to 2.00%; Mn: 0.10% to 2.00%; Ti: 0.001% to 0.01%; V: 0.005% to 0.20%; and N: less than 0.0040%, with the balance being Fe and inevitable impurities, wherein contents of Ti and V fulfill the following formula (1), and a rail head portion has a pearlite structure.
5≦[V(% by mass)]/[Ti(% by mass)]≦20 Formula (1) |
| 申请公布号 |
US8747576(B2) |
申请公布日期 |
2014.06.10 |
| 申请号 |
US201013261069 |
申请日期 |
2010.04.14 |
| 申请人 |
Nippon Steel & Sumitomo Metal Corporation |
发明人 |
Miyazaki Teruhisa;Ueda Masaharu;Yoshida Suguru |
| 分类号 |
C22C38/12;C22C38/14;C21D7/13 |
主分类号 |
C22C38/12 |
| 代理机构 |
|
代理人 |
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| 主权项 |
1. A pearlitic steel rail, consisting of: in terms of percent by mass,
C: more than 0.85% to 1.40%; Si: 0.10% to 2.00%; Mn: 0.10% to 2.00%; Ti: 0.003% to 0.01%; V: 0.005% to 0.20%; N: 0.0024 to less than 0.0040%; and a balance of Fe and inevitable impurities, wherein contents of Ti and V fulfill the following formula (1), and a rail head portion of the pearlitic steel rail has a pearlite structure,
5≦[V(% by mass)]/[Ti(% by mass)]≦20 Formula (1).
|
| 地址 |
Tokyo JP |
