Method of fabrication of rock bit inserts of tungsten carbide (WC) and cobalt (Co) with cutting surface wear pad of relative hardness and body portion of relative toughness sintered as an integral composite
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United States of America Patent
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Nov 16, 1982
Grant Date -
N/A
app pub date -
Jun 5, 1980
filing date -
Jun 5, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of fabricating a rock bit insert which has improved wear characteristics is disclosed. Selected surfaces of the insert are implanted with a harder grade of tungsten carbide and sintered thereto. The special insert then would find application in the gage row of, for example, a roller cone rock bit.
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