发明名称 |
HERSTELLUNG VON SCHNEIDEINZELTEILEN FUER DREHENDE BOHRKOEPFE. |
摘要 |
<p>A cutting structure, for a rotary drill bit, is of the kind comprising a preform cutting element 18 having a front cutting face formed of superhard material, such as polycrystalline diamond, 20 and a rear face bonded to a carrier 19 of less hard material, such as cemented tungsten carbide. The cutting element is bonded to the carrier by means of an ally having the following composition: Ni 30 - 60% Pd 30 - 62% Si 3 - 15% An alternative alloy has the following composition: Cr 4 - 10% Fe 1 - 5% Si 2 - 7% C 0.01 - 0.10% B 2 - 5% Ni Balance ompri</p> |
申请公布号 |
DE3882600(D1) |
申请公布日期 |
1993.09.02 |
申请号 |
DE19883882600 |
申请日期 |
1988.06.13 |
申请人 |
CAMCO DRILLING GROUP LTD., STONEHOUSE, GLOUCESTERSHIRE, GB |
发明人 |
GRIFFIN, NIGEL DENNIS, WHITMINSTER GLOUCESTERSHIRE, GB |
分类号 |
B23K35/30;B23K35/32;E21B10/56;E21B10/567;(IPC1-7):B23K35/32;B23K35/00;B23K31/00;E21B10/00 |
主分类号 |
B23K35/30 |
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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