发明名称 |
FASTENING ELEMENT MADE OF A CARBON-CONTAINING STEEL AND METHOD FOR THE PRODUCTION THEREOF |
摘要 |
<p>A fixing element which comprises carbon-bearing steel and has a hardened functional tip is overall heated to the austenitisation temperature, held at that temperature and then quenched and is then subjected to an annealing operation which is effected by inductive heating and limited to the region of the fixing element, which lies outside the functional tip. In that way the structure of the fixing element comprises in part martensite and in part annealed martensite, wherein the functional tip comprises throughout martensite and the remainder of the fixing element comprises a martensite which is annealed by short-term inductive heating.</p> |
申请公布号 |
EP1451378(B1) |
申请公布日期 |
2007.05.09 |
申请号 |
EP20020787727 |
申请日期 |
2002.11.19 |
申请人 |
EJOT VERBINDUNGSTECHNIK GMBH & CO. KG |
发明人 |
FRIEDERICH, HEINRICH;SCHMOOCK, REINHARD |
分类号 |
C21D9/00;C21D1/18;C21D1/42 |
主分类号 |
C21D9/00 |
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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