发明申请
US20100012387A1 EARTH-BORING TOOLS AND METHODS OF MAKING EARTH-BORING TOOLS INCLUDING AN IMPACT MATERIAL, AND METHODS OF DRILLING THROUGH CASING 有权
接地工具和制造包含冲击材料的接地工具的方法以及通过铸造钻孔的方法

EARTH-BORING TOOLS AND METHODS OF MAKING EARTH-BORING TOOLS INCLUDING AN IMPACT MATERIAL, AND METHODS OF DRILLING THROUGH CASING
摘要:
Earth-boring tools comprise a face and a plurality of cutting elements disposed on at least a portion of the face. An impact material is positioned on at least one portion of the body and has a relative exposure equal to or greater than at least some of the cutting elements of the plurality of cutting elements. The impact material comprises a material having a lower abrasion resistance than the body. Methods of making and methods of using such earth-boring tools are also disclosed.
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