Method and apparatus for retaining polycrystalline diamond cutters in a drill bit body of matrix or steel
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United States of America Patent
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Issued Date -
Feb 12, 2009
app pub date -
Aug 7, 2008
filing date -
Aug 9, 2007
priority date (Note) -
Abandoned
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Abstract
As a more friendly, environmentally sounder replacement process for retaining PDC cutters in drill bits, compared to the known high temperature metallic brazing processes, a process is described for using a low temperature resin which cures in the range of 350° F. to 450° F., while having a melting point below 1250° F., to prevent degradation to the PDC cutters usually occurring at 1250° F. in the drill bit repair cycle.
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