发明名称 |
CUTTING TOOL INSERT AND DRILL BIT SO EQUIPPED |
摘要 |
A polycrystalline diamond abrasive cutting element consists generally of a layer of high grade polycrystalline diamond bonded to a cemented carbide substrate. The polycrystalline diamond layer has a working surface and an outer peripheral surface and is characterized by having an annular region or a portion thereof adjacent the peripheral surface that is lean in catalysing material. A region adjacent the working surface is also lean in catalysing material such that in use, as a wear scar develops, both the leading edge and the trailing edge thereof are located in a region lean in catalysing material.
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申请公布号 |
US2010236837(A1) |
申请公布日期 |
2010.09.23 |
申请号 |
US20100792987 |
申请日期 |
2010.06.03 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
ACHILLES ROY DERRICK |
分类号 |
E21B10/56;B23B;B23B27/14;B24D3/00;C23C30/00;E21B10/46 |
主分类号 |
E21B10/56 |
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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