发明名称 |
IMPROVED TOOLS FOR CUTTING ROCK DRILLING |
摘要 |
The present invention relates to a rock bit insert of cemented carbide for cutting rock drilling. The insert (1) is provided with one or more bodies (3) or layers of diamond or cBN produced at high pressure and high temperature in the diamond or cBN stable area. The body ef cemented carbide has a multi-structure containing eta-phase (6) surrounded by a surface zone (4,5) of cemented carbide free of eta-phase and having a low content of cobalt in the surface (4) and a higher content of cobalt next to the eta-phase zone (5). <IMAGE> |
申请公布号 |
SE9002137(D0) |
申请公布日期 |
1990.06.15 |
申请号 |
SE19900002137 |
申请日期 |
1990.06.15 |
申请人 |
DIAMANT BOART STRATABIT SA;SANDVIK AB |
发明人 |
M *WALDENSTROEM |
分类号 |
C22C29/08;E21B10/56;E21B10/573 |
主分类号 |
C22C29/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|