发明名称 |
RAIL OF HIGH ABRASION RESISTANCE AND HIGH TENACITY HAVING PEARLITE METALLOGRAPHIC STRUCTURE AND METHOD OF MANUFACTURING THE SAME |
摘要 |
This invention relates to a high-tenacity rail having a strength, an abrasion resistance, and a high carbon pearlite structure excellent in ductility and tenacity; and a method of manufacturing the same. A high-tenacity rail having elongation of not less than 12 % and a U-notch Charpy impact value of not less than 25 J/cm<2> obtained by forming fine pearlite blocks by a special rolling operation in steel of a high abrasion resistance containing 0.60-1.20 wt.% of C, 0.10-1.20 wt.% of Si and 0.40-1.50 wt.% of Mn, and one or not less than two kinds of elements out of Cr, Mo, V, Nb and Co as necessary; and a method of manufacturing the same. This invention enables the ductility and tenacity of a high carbon steel rail of a high abrasion resistance to be improved, and a rail of a high safety to be provided for railways in a cold district. <IMAGE> |
申请公布号 |
EP0685566(B2) |
申请公布日期 |
2013.06.05 |
申请号 |
EP19950902988 |
申请日期 |
1994.12.19 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
UCHINO, KOUICHI;KUROKI, TOSHIYA;UEDA, MASAHARU |
分类号 |
C22C38/00;C21D8/00;C21D9/04;C22C38/30 |
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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