Invention Grant
US08662207B2 Rotary drag bits including abrasive-impregnated cutting structures 有权
旋转拖曳钻头包括磨料浸渍的切割结构

Rotary drag bits including abrasive-impregnated cutting structures
Abstract:
Rotary drag bits comprise a body comprising a face at a leading end of the body. An abrasive-impregnated cutting structure is located at the face of the bit body. The abrasive-impregnated cutting structure comprises abrasive particles dispersed within a matrix material. The abrasive-impregnated cutting structure exhibits an anisotropic wear resistance. The wear resistance varies at least substantially continuously within the abrasive-impregnated cutting structure.
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