发明名称 |
PEARLITE RAIL HAVING SUPERIOR ABRASION RESISTANCE AND EXCELLENT TOUGHNESS |
摘要 |
<p>This pearlite 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%; P‰¤ 0.0150%; S‰¤ 0.0100%; Ca: 0.0005 to 0.0200%, and Fe and inevitable impurities as the balance, wherein 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, a hardness Hv of the pearlite structure is in a range of 320 to 500, and Mn sulfide-based inclusions having major lengths in a range of 10 to 100 µm are present at an amount per unit area in a range of 10 to 200/mm 2 in a cross-section taken along a lengthwise direction in the pearlite structure.</p> |
申请公布号 |
EP2343390(A1) |
申请公布日期 |
2011.07.13 |
申请号 |
EP20090823351 |
申请日期 |
2009.10.30 |
申请人 |
NIPPON STEEL CORPORATION |
发明人 |
UEDA, MASAHARU;SEKI, KAZUNORI;SATOU, TAKUYA;YAMAMOTO, TAKESHI |
分类号 |
C22C38/04;C21C7/00;C21C7/04;C22C38/58 |
主分类号 |
C22C38/04 |
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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