发明名称 |
METHODS OF FORMING EARTH-BORING TOOLS INCLUDING SINTERBONDED COMPONENTS AND TOOLS FORMED BY SUCH METHODS |
摘要 |
Partially formed earth-boring rotary drill bits comprise a first less than fully sintered particle-matrix component having at least one recess, and at least a second less than fully sintered particle-matrix component disposed at least partially within the at least one recess. Each less than fully sintered particle-matrix component comprises a green or brown structure including compacted hard particles, particles comprising a metal alloy matrix material, and an organic binder material. The at least a second less than fully sintered particle-matrix component is configured to shrink at a slower rate than the first less than fully sintered particle-matrix component due to removal of organic binder material from the less than fully sintered particle-matrix components in a sintering process to be used to sinterbond the first less than fully sintered particle-matrix component to the first less than fully sintered particle-matrix component. Earth-boring rotary drill bits comprise such components sinterbonded together. |
申请公布号 |
EP2304162(A4) |
申请公布日期 |
2013.09.04 |
申请号 |
EP20090763485 |
申请日期 |
2009.06.10 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
SMITH, REDD, H.;LYONS, NICHOLAS, J. |
分类号 |
E21B10/46;B22F3/14;C22C29/08;E21B10/54 |
主分类号 |
E21B10/46 |
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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