发明名称 |
DIAMOND ENHANCED DRILLING INSERT WITH HIGH IMPACT RESISTANCE |
摘要 |
An insert for a drill bit may include a substrate; a working layer of polycrystalline diamond material on the uppermost end of the insert, wherein the polycrystalline diamond material includes a plurality of interconnected diamond grains; and a binder material; and an inner transition layer between the working layer and the substrate, wherein the inner transition layer is adjacent to the substrate; wherein the inner transition layer has a hardness that is at least 500 HV greater than the hardness of the substrate.
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申请公布号 |
US2013168155(A1) |
申请公布日期 |
2013.07.04 |
申请号 |
US201213717865 |
申请日期 |
2012.12.18 |
申请人 |
SMITH INTERNATIONAL, INC.;SMITH INTERNATIONAL, INC. |
发明人 |
FANG YI;HORMAN SCOTT L. |
分类号 |
E21B10/46 |
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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