发明名称 |
Methods of forming earth-boring rotary drill bits including bit bodies having boron carbide particles in aluminum or aluminum-based alloy matrix materials |
摘要 |
Methods of manufacturing rotary drill bits for drilling subterranean formations include forming a plurality of boron carbide particles into a body having a shape corresponding to at least a portion of a bit body of a rotary drill bit, infiltrating the plurality of boron carbide particles with a molten aluminum or aluminum-based material, and cooling the molten aluminum or aluminum-based material to form a solid matrix material surrounding the boron carbide particles. In additional methods, a green powder component is provided that includes a plurality of particles each comprising boron carbide and a plurality of particles each comprising aluminum or an aluminum-based alloy material. The green powder component is at least partially sintered to provide a bit body, and a shank is attached to the bit body. |
申请公布号 |
US8230762(B2) |
申请公布日期 |
2012.07.31 |
申请号 |
US201113022308 |
申请日期 |
2011.02.07 |
申请人 |
CHOE HEEMAN;STEVENS JOHN H.;WESTHOFF JAMES C.;EASON JIMMY W.;OVERSTREET JAMES L.;BAKER HUGHES INCORPORATED |
发明人 |
CHOE HEEMAN;STEVENS JOHN H.;WESTHOFF JAMES C.;EASON JIMMY W.;OVERSTREET JAMES L. |
分类号 |
B21K5/04;E21B10/04 |
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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