Rock bit compact and method of manufacture
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United States of America Patent
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Dec 22, 1992
Grant Date -
N/A
app pub date -
Mar 1, 1991
filing date -
Mar 1, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
A method is shown for manufacturing a diamond filled compact of the type used as a cutting insert which is received in a cutting insert pocket in a drill bit. A hard metal jacket is provided having an open end and an open interior. The open interior is substantially filled with diamond. The diamond filled jacket is subjected to a temperature and a pressure sufficient to sinter the diamond and integrally form a diamond core within the hard metal jacket. The outer dimensions of the hard metal jacket are then reduced to a size selected to conform to a cutting insert pocket provided on the face of a drill bit.
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