Hardfacing milled-tooth drill bits using super dense carbide...

Details Hardfacing milled-tooth drill bits using super dense carbide... Hardfacing milled-tooth drill bits using super dense carbide...

2005-07-05

2010-02-23

King, Roy (Department: 1793)

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

C175S374000, C175S375000, C175S425000

Reexamination Certificate

active

07666244

ABSTRACT:
A hardfacing composition for a drill bit, including a carbide phase comprising from about 50% to about 75% by weight of the hardfacing composition of a combination of 16 to 40 mesh cemented tungsten carbide and 80 to 200 mesh super dense tungsten carbide cobalt particles, wherein about 5% to about 50% by weight of the carbide phase comprises the super dense tungsten carbide cobalt particles, and a binder alloy including about 25% to about 50% by weight of the hardfacing composition.

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