Fracture and wear resistant compounds and rock bits

Details Fracture and wear resistant compounds and rock bits Fracture and wear resistant compounds and rock bits

E - Fixed Constructions

21

B

E21B 10/08 (2006.01) C22C 29/08 (2006.01) E21B 10/16 (2006.01)

Patent

CA 2462381

An insert for a rock bit that includes tungsten carbide particles, and a cobalt binder disposed around the particles, wherein a grain size of the tungsten carbide particles and a content of the cobalt binder are selected to provide a fracture toughness of at least about 18 ksi (in) 0.5, a wear number of at least about 2, and a hardness of 85 to 87 Ra is disclosed.

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