发明名称 |
HARDFACING ROCK BIT CONES FOR EROSION PROTECTION |
摘要 |
A method of manufacturing a rolling cone with hard-facing coating for u se in drilling boreholes is disclosed. The method includes a step of depositing a layer of hardfacing material by an arc process, e.g., a gas-shielding tungsten arc welding process, a plasma-transferred arc welding process, or a metal inert gas arc welding process, over areas susceptible to erosion on the rolling cone surface. A rolling cone rock bit for drilling boreholes with a layer of hardfacing material deposited by an arc process either on the lands or in grooves or both of the cone surface is provided. Furthermore, a cone for attachment to the bit body of a rock bit with a layer of hardfacing material deposited on selected lands or in selected grooves or both of the cone surface also is provided.
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申请公布号 |
CA2260176(C) |
申请公布日期 |
2006.05.23 |
申请号 |
CA19992260176 |
申请日期 |
1999.01.22 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
SLAUGHTER, ROBERT;DIDERICKSEN, ROGER |
分类号 |
E21B10/46;B23P15/28;E21B;E21B10/08;E21B10/52 |
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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