发明名称 PARTICLE MATRIX COMPOSITE DRILL BITS WITH HARDFACING AND METHODS OF MANUFACTURING AND REPAIRING SUCH DRILL BITS USING HARDFACING MATERIALS
摘要 <p>A rotary drill bit includes a bit body substantially formed of a particle-matrix composite material having an exterior surface and an abrasive wear-resistant material disposed on at least a portion of the exterior surface of the bit body. Methods for applying an abrasive wear-resistant material to a surface of a drill bit are also provided.</p>
申请公布号 WO2008042329(A1) 申请公布日期 2008.04.10
申请号 WO2007US21071 申请日期 2007.09.28
申请人 BAKER HUGHES INCORPORATED;OVERSTREET, JAMES, L. 发明人 OVERSTREET, JAMES, L.
分类号 C22C29/08;C23C30/00 主分类号 C22C29/08
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