STEEL FOR WHEEL |
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| 申请号 | EP11841233 | 申请日 | 2011-11-18 | 公开(公告)号 | EP2641988A4 | 公开(公告)日 | 2014-09-03 |
| 申请人 | NIPPON STEEL & SUMITOMO METAL CORP; | 发明人 | YAMAMOTO YUICHIRO; TAKESHITA YUKITERU; KATO TAKANORI; KIRIYAMA KENTARO; | ||||
| 摘要 | There is provided steel for wheel having a chemical composition consisting of, by mass percent, C: 0.65 to 0.84%, Si: 0.02 to 1.00%, Mn: 0.50 to 1.90%, Cr: 0.02 to 0.50%, V: 0.02 to 0.20%, and S: 0.04% or less, in which 34 ‰¤ 2.7 + 29.5 × C + 2.9 × Si + 6.9 × Mn + 10.8 × Cr + 30.3 × Mo + 44.3 × V ‰¤ 43, and 0.76 × exp (0.05 × C) × exp (1.35 × Si) × exp (0.38 × Mn) × exp (0.77 × Cr) × exp (3.0 × Mo) × exp (4.6 × V) ‰¤ 25, the balance being Fe and impurities, and the impurities containing P: 0.05% or less, Cu: 0.20% or less, and Ni: 0.20% or less. This steel for wheel is excellent in balance between the wear resistance, rolling contact fatigue resistance and the spalling resistance, and can give a long life to the wheel. | ||||||
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