发明名称 |
ABRASIVE TOOL |
摘要 |
Thermally stable abrasive compacts of hexagonal shape have been found to have excellent abrasive properties in the abrading of a medium to soft rock having an unconfined compressive strength of less than 240 MPa. Preferably the abrasive tool used is a surface set drill bit wherein some of the thermally stable abrasive compacts are so located around the working edge of the bit that a side thereof acts as a gauge stone for the working portion. |
申请公布号 |
ZA8604402(B) |
申请公布日期 |
1987.02.25 |
申请号 |
ZA19860004402 |
申请日期 |
1986.06.12 |
申请人 |
DE BEERS INDUSTRIAL DIAMOND DIVISION (PTY) LIMITED |
发明人 |
PETER NOEL TOMLINSON;RICHARD PATRICK BURNAND;KLAUS TANK |
分类号 |
E21B10/46;B24D7/06;E21B;E21B10/48;E21B10/56;E21B10/567 |
主分类号 |
E21B10/46 |
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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