发明名称 |
ROLLING PART AND POWER TRANSMISSION PART |
摘要 |
There is provided a rolling component formed of a steel material of the medium carbon steel level that provides a rolling life improved to be comparable to that of bearing steel and also provides improved characteristic against surface-cracking, and a power transmission component including the rolling component. To achieve this, the rolling component is formed of steel having an induction hardened portion having a stress intensity factor range associated with tension associated-fatigue crack extension that has a lower limit DELTA Kth of 6.2 Mpa 2ROOT m. <IMAGE> <IMAGE> |
申请公布号 |
EP1507090(A8) |
申请公布日期 |
2005.05.11 |
申请号 |
EP20030728107 |
申请日期 |
2003.05.19 |
申请人 |
NTN CORPORATION |
发明人 |
MATSUBARA, YUKIO;MAEDA, KIKUO |
分类号 |
B60B27/00;C21D1/10;C22C38/00;C22C38/02;C22C38/04;C22C38/18;F16C33/30;F16C33/32;F16C33/62 |
主分类号 |
B60B27/00 |
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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