Rock bit with wear resistant inserts

Details Rock bit with wear resistant inserts Rock bit with wear resistant inserts

E - Fixed Constructions

21

B

255/74

E21B 10/52 (2006.01) B22F 7/06 (2006.01) C22C 26/00 (2006.01) E21B 10/56 (2006.01)

Patent

CA 1256096

ROCK BIT WITH WEAR RESISTANT INSERTS Abstract A rock bit has three cones with tungsten carbide inserts in the cutting structure of each cone. The gage row inserts have a layer of polycrystalline diamond on the converging portion protruding from the surface of the cone. One or more transition layers are provided between the tungsten carbide insert body and the polycrystalline diamond layer. Such a transition layer comprises diamond and precemented tungsten carbide.

517811

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