发明名称 |
Improved tools for percussive and rotary crushing rock drilling provided with a diamond layer. |
摘要 |
<p>The present invention relates to a rock bit button (1) of cemented carbide for percussive or rotary crushing rock drilling. The button (1) is provided with a layer of diamond (3) produced at high pressure and high temperature in the diamond stable area. The cemented carbide has a multi-phase structure having a core that contains eta-phase surrounded by a surface zone of cemented carbide free of eta-phase. <IMAGE></p> |
申请公布号 |
EP0462091(A1) |
申请公布日期 |
1991.12.18 |
申请号 |
EP19910850161 |
申请日期 |
1991.06.12 |
申请人 |
SANDVIK AKTIEBOLAG |
发明人 |
WALDENSTROEM, MATS;FISCHER, UDO;HILLERT, LARS;DENNIS, MAHLON |
分类号 |
C22C29/08;E21B10/56;E21B10/567;E21B10/573 |
主分类号 |
C22C29/08 |
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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