发明名称 |
Verfahren zur Herstellung von Kugeln oder Kugelsegmenten, sowie danach hergestelltes Kugelelement für zweiteilige Kugelzapfen |
摘要 |
A process is provided for manufacturing balls, especially for ball and socket joints, as well as to a ball element for two-part ball pivots. The microalloyed carbon-manganese steel balls are manufactured by cold extrusion and subsequent grinding. Annealing can thus be completely eliminated, as a result of which a less expensive material can be used. The process makes possible a manufacture of balls especially for two-part ball pivots in a simpler manner and at a lower cost, and the surface finish and the material quality as well as the strength and the wear resistance are at the same time preserved or increased. As a result, the effort needed to manufacture the balls is reduced, and, moreover, the problem of the impact marks often developing on the ball surfaces during tempering is eliminated. |
申请公布号 |
DE102004022248(B4) |
申请公布日期 |
2007.06.14 |
申请号 |
DE20041022248 |
申请日期 |
2004.05.04 |
申请人 |
ZF FRIEDRICHSHAFEN AG |
发明人 |
KRUSE, JOCHEN;STOETERAU, REINHARD;ADAMCZYK, DIRK;CASTANET, JEAN-PAUL |
分类号 |
B23P13/00;B21K1/02;B21K1/76;C21D7/02;C21D9/36;C22C38/04;F16C11/06 |
主分类号 |
B23P13/00 |
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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