High-strength tungsten carbide material for use in earth-boring

Details High-strength tungsten carbide material for use in earth-boring High-strength tungsten carbide material for use in earth-boring

1992-02-28

1994-01-25

Walsh, Donald P.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75242, 175426, 51307, C22C 2908

Patent

active

052812600

ABSTRACT:
A sintered hard metal compact for use in earth-boring bits comprises 80 to 94% by weight tungsten carbide particles, 5.4 to 18% by weight cobalt particles and 0.6 to 2.0% by weight nickel particles wherein the ratio of cobalt to nickel is approximately 9:1 by weight. These materials are formed according to conventional powder-metallurgy techniques to provide a hard, sintered compact for use in earth-boring bits having superior properties for drilling applications.

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