发明名称 |
PEARLITIC RAIL WITH EXCELLENT WEAR RESISTANCE AND TOUGHNESS |
摘要 |
<p>This pearlitic rail consists of a steel including: in terms of percent by mass, C: 0.65% to 1.20%; Si: 0.05% to 2.00%; Mn: 0.05% to 2.00%; and REM: 0.0005% to 0.0500%, with the balance being Fe and inevitable impurities, wherein, in a head portion of the rail, a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, and the hardness Hv of the head surface portion is in a range of 320 to 500.</p> |
申请公布号 |
EP2400040(B1) |
申请公布日期 |
2015.11.25 |
申请号 |
EP20100743487 |
申请日期 |
2010.01.21 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
UEDA, MASAHARU;MOROHOSHI, TAKASHI;SEKI, KAZUNORI |
分类号 |
C22C38/00;C21D9/04;C22C38/02;C22C38/04 |
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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