| 发明名称 |
MACHINE ELEMENT AND METHOD FOR MANUFACTURE THEREOF |
| 摘要 |
<p>A hub ring (4) and/or an outer ring (3) constituting a bearing device for a wheel (10), which is formed from a steel which comprises 0.45 to 0.70 mass % of C and contains at least one of V, Nb and Ti in a total amount of 0.3 mass % or less, wherein a micro structure of a part being not surface-treated comprises a ferrite structure in 15 to 30 area % and contains a particulate ferrite.</p> |
| 申请公布号 |
WO2005088147(A1) |
申请公布日期 |
2005.09.22 |
| 申请号 |
WO2005JP03576 |
申请日期 |
2005.03.03 |
| 申请人 |
NTN CORPORATION;HIRAI, ISAO;TAKUBO, TAKAYASU;YOSHIDA, KAZUHIKO |
发明人 |
HIRAI, ISAO;TAKUBO, TAKAYASU;YOSHIDA, KAZUHIKO |
| 分类号 |
F16D3/20;B60B35/02;C21D9/40;C22C38/00;C22C38/14;F16C19/18;F16C19/38;F16C33/32;F16C33/36;F16C33/62;F16C33/64;F16C33/78;F16D3/2245;F16D3/227;(IPC1-7):F16C33/64 |
主分类号 |
F16D3/20 |
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