| 发明名称 |
STAHL ZUM HERSTELLEN EINES LAGERS |
| 摘要 |
The invention concerns steel for making a ball bearing part whereof the chemical composition comprises, by weight: 0.6 % </= C </= 1.5 %; 0.4 % </= Mn </= 1.5 %; 0.75 % </= Si </= 2.5 %; 0.2 % </= Cr </= 2 %; 0 % </= Ni </= 0.5 %; 0 % </= Mo </= 0.2 %; 0 % < Al </= 0.05 % ; S </= 0.04 %; the rest being iron and the impurities resulting from the preparation. The composition further satisfies the relationships: Mn </= 0.75 + 0.55 x Si and Mn </= 2.5-0.8 x Si. The enclosure purity of the steel measured by method A of the ASTM E 45 standard further satisfying the following conditions: type A enclosures, fines: index </= 2.5; coarse particles: index 1.5; type B enclosures, fines: index </= 1.5 coarse particles: index </= 0.5; type C enclosures, fines: index = 0; coarse particles: index = 0; type D enclosures, fines: index </= 0.5; coarse particles </= 0.5. The invention also concerns a method for making a ball bearing part and the resulting ball bearing part. |
| 申请公布号 |
AT225866(T) |
申请公布日期 |
2002.10.15 |
| 申请号 |
AT19990932960T |
申请日期 |
1999.07.23 |
| 申请人 |
ASCOMETAL |
发明人 |
BAUDRY, GILLES;BELLUS, JACQUES;GIRODIN, DANIEL;DUDRAGNE, GILLES;JACOB, GERARD |
| 分类号 |
F16C33/30;C21D1/18;C21D1/20;C21D1/32;C21D8/10;C21D9/40;C22C38/00;C22C38/18;C22C38/34;C22C38/44;F16C33/62;(IPC1-7):C22C38/02;F16C33/64;C22C38/38;C21D1/78;C22C38/04 |
主分类号 |
F16C33/30 |
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