发明名称 |
Multi-layer encapsulation of diamond grit for use in earth-boring bits |
摘要 |
A method of constructing an earth-boring, diamond-impregnated drill bit has a first step of coating diamond grit with tungsten to create tungsten-coated diamond particles. These coated particles are then encapsulated in a layer of carbide powder held by an organic green binder material. The encapsulated granules are then mixed along with a matrix material and placed in a mold. The matrix material includes a matrix binder and abrasive particles. The mixture is heated in the mold at atmospheric pressure to cause the matrix binder to melt and infiltrate the encapsulated granules and abrasive particles.
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申请公布号 |
US7810588(B2) |
申请公布日期 |
2010.10.12 |
申请号 |
US20070678304 |
申请日期 |
2007.02.23 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
MCCLAIN ERIC E.;SCOTT DAN E.;FULLER WESLEY DEAN;WELCH ROBERT M.;EASON JIMMY W.;SKEEM MARCUS R.;BRACKIN VAN J. |
分类号 |
B21K5/04 |
主分类号 |
B21K5/04 |
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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