Wear compensating rock bit insert

Details Wear compensating rock bit insert Wear compensating rock bit insert

1986-10-01

1988-02-02

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175410, 75242, 76108A, 76DIG11, E21B 1052

Patent

active

047224053

ABSTRACT:
A composite sintered rock bit insert for use in a rolling cutter is fabricated from two tungsten carbide components. The first component is formed of a tungsten carbide composite that is less wear resistant, but tougher, than the second component. The two components are joined at a parting plane which extends to an earth-engaging surface of the insert. The insert is mounted on a rolling cutter such that the component having the lower wear resistant properties is on the leading face of the insert. With this combination, the wear pattern of the insert maintains a crest-like configuration at its rock engaging surface.

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