Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1977-05-13
1979-05-29
Arnold, Donald J.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51309, 175329, 175330, E21B 936, B23K 120
Patent
active
041563298
ABSTRACT:
A method for fabricating a drill bit comprising a plurality of composite compact cutters by furnace brazing each cutter in a recess in the crown of the drill bit. In one embodiment, each cutter is comprised of a mass of bonded polycrystalline abrasive, a substrate bonded to said abrasive mass and a thin layer of brazing filler metal coating the exposed surface of the substrate. In another embodiment, the cutter comprises a composite compact cutter blank bonded to one end of a cemented carbide pin, and a thin layer of brazing filler material coating the substrate of the blank and the carbide pin. In both embodiments, the coating of brazing filler metal is applied to the cutters by dipping in a molten bath of the filler metal.
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Brazing Manual, American Welding Society, 1963, p. 108.
Daniels William H.
Knemeyer Friedel S.
Arnold Donald J.
General Electric Company
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