发明名称 |
Cemented carbide body. |
摘要 |
<p>The present invention relates to cemented carbide bodies preferably for rock drilling and mineral cutting. Due to the fact that the bodies are built up of a core of eta-phase containing cemented carbide surrounded by a surface zone free of eta-phase with low Co-content in the surface zone and successively increasing Co-content to a maximum in the outer part of the eta-phase-core they have obtained an increase in toughness and life at practical use. <IMAGE></p> |
申请公布号 |
EP0498781(A1) |
申请公布日期 |
1992.08.12 |
申请号 |
EP19920850019 |
申请日期 |
1992.02.03 |
申请人 |
SANDVIK AKTIEBOLAG |
发明人 |
AKERMAN, JAN;FISCHER, UDO;HARTZELL, TORBJOERN |
分类号 |
C22C1/04;C22C1/05;C22C29/08;C23C8/20;C23C30/00;E21B10/56 |
主分类号 |
C22C1/04 |
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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