发明名称 |
STEEL RAIL AND METHOD OF MANUFACTURING THE SAME |
摘要 |
<p>The disclosed steel rail contains, by mass percent, 0.85-1.20 % carbon, 0.05-2.00 % silicon, 0.05-0.50 % manganese, 0.05-0.60 % chromium and = 0.0150 % phosphorus, with the remainder consisting of iron and inevitable impurities. At least 97% of the head surface, which has a depth of 10 mm using the surface of the head recess or the top of the head as a starting point, has a pearlite structure. The pearlite structure has a Vickers hardness of 320-500 Hv. Within the pearlite structure, the density of manganiferous cementite (CMn [at.%]) divided by the density of manganiferous ferrite (FMn [at.%]) gives a CMn/FMn value of 1.0-5Ø</p> |
申请公布号 |
CA2800022(C) |
申请公布日期 |
2015.04.28 |
申请号 |
CA20112800022 |
申请日期 |
2011.06.07 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
UEDA, MASAHARU;TAKAHASHI, JUN;KOBAYASHI, AKIRA;TANAHASHI, TAKUYA |
分类号 |
C22C38/18;B21B3/00;C21D9/04;C22C38/02;C22C38/04;C22C38/34 |
主分类号 |
C22C38/18 |
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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