发明名称 |
Bit body formed of multiple matrix materials and method for making the same |
摘要 |
Drill bit bodies are provided having one portion formed of one composition and a further portion formed of a different composition. The different compositions provide different functional properties to respective portions of the drill bit body. Methods for forming such drill bit bodies are also provided. |
申请公布号 |
US8109177(B2) |
申请公布日期 |
2012.02.07 |
申请号 |
US20050250097 |
申请日期 |
2005.10.12 |
申请人 |
KEMBAIYAN KUMAR T.;SMITH INTERNATIONAL, INC. |
发明人 |
KEMBAIYAN KUMAR T. |
分类号 |
B21K5/04;B22F7/06;E21B10/00 |
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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