发明名称 |
SOFT-NITRIDED INDUCTION-QUENCHED STEEL COMPONENT |
摘要 |
A soft nitrided induction hardened steel part which is excellent in bearing fatigue strength comprised of a predetermined chemical composition wherein a dissolved N concentration from the surface to 0.2 mm depth is 0.05 to 1.50%, a Vicker's hardness from the surface to 0.2 mm depth after tempering at 300°C is Hv600 or more, and t/r‰¤0.35 when an effective hardened layer depth "t" is 0.5 mm or more and a radius of a breakage risk site or half of the thickness is "r" (mm). |
申请公布号 |
EP3006584(A4) |
申请公布日期 |
2016.12.28 |
申请号 |
EP20130885805 |
申请日期 |
2013.05.30 |
申请人 |
Nippon Steel & Sumitomo Metal Corporation |
发明人 |
KOYAMA, Tatsuya;YOSHIDA, Suguru |
分类号 |
C22C38/00;C21D1/06;C21D1/10;C21D9/32;C22C38/38;C22C38/60;C23C8/32;C23C8/80 |
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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