发明名称 |
SCREW MADE OF LOW-ALLOY CARBON STEEL, AND METHOD FOR PRODUCING SUCH A SCREW |
摘要 |
The invention relates to a screw having a head, an adjoining retaining section and a functional tip for use as a self-tapping screw. The functional tip is of greater hardness than the retaining section. The entire screw is made of hardened low-alloy carbon steel. The special feature of this screw is that its functional tip has a higher carbon and/or nitrogen content than its retaining section. |
申请公布号 |
EP2655676(A1) |
申请公布日期 |
2013.10.30 |
申请号 |
EP20110794439 |
申请日期 |
2011.11.28 |
申请人 |
EJOT GMBH & CO. KG |
发明人 |
PINZL, WILFRIED |
分类号 |
C21D9/00;C23C8/04;C23C8/22;C23C8/26;C23C8/80;F16B35/00 |
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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