Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Patent
1992-06-08
1994-09-20
Neuder, William P.
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
175434, E21B 1046
Patent
active
053481089
ABSTRACT:
An improved earth-boring bit the rolling cone variety and an insert for use therein is provided. A superabrasive element is coated with at least one layer of metallic material. The superabrasive element then is placed in a receptacle cavity in a pre-formed hard metal jacket. The superabrasive element then is brazed or infiltrated to the hard metal jacket. Metallurgical and mechanical bonds between the superabrasive element, the at least one layer of metallic material on superabrasive element, the braze or infiltrant binder material, and the fracture-tough material of the hard metal jacket retain the superabrasive element in the cavity of the hard metal jacket. Improved earth-boring bits according to this embodiment of the present invention provide abrasion-resistant earth-boring bits of the rolling cutter variety. Such improved bits, and the inserts therefore, are formed without resort to high-temperature, high-pressure processes.
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Scott Danny E.
Smith Redd H.
Tibbitts Gordon A.
Baker Hughes Incorporated
Neuder William P.
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