发明名称 |
MATRIX BIT BODIES WITH MULTIPLE MATRIX MATERIALS |
摘要 |
A method of manufacturing a drill bit having a bit body and a plurality of blades extending radially from the bit body is disclosed, wherein the method includes adhering a first matrix material to at least a portion of a mold cavity corresponding to an outer surface of the bit body, loading a second matrix material into the other portions of the mold cavity, and heating the mold contents to form a matrix body drill bit.
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申请公布号 |
US2011174114(A1) |
申请公布日期 |
2011.07.21 |
申请号 |
US20100964827 |
申请日期 |
2010.12.10 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
LOCKWOOD GREGORY T.;ZHANG YOUHE;SHEN YUELIN |
分类号 |
B23P17/00 |
主分类号 |
B23P17/00 |
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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