Drilling bit having a cutting element. co-sintered with a...

E - Fixed Constructions – 21 – B

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E21B 10/50 (2006.01) E21B 10/567 (2006.01)

Patent

CA 2678434

Methods of forming cutter assemblies for use on earth-boring tools include sintering a cone structure to fuse one or more cutting elements thereto. In some embodiments, one or more green, brown, or fully sintered cutting elements may be positioned on a green or brown cone structure prior to sintering the cone structure to a final density. Cutter assemblies may be formed by such methods, and such cutter assemblies may be used in earth-boring tools such as, for example, earth-boring rotary drill bits and hole openers.

L'invention concerne des procédés de formation d'ensembles de coupe destinés à être utilisés sur des outils de forage dans le sol, qui comprennent le frittage d'une structure de cône pour mélanger un ou plusieurs éléments de coupe. Dans certains modes de réalisation, un ou plusieurs éléments de coupe verts, marrons, ou complètement frittés peuvent être positionnés sur une structure de cône verte ou marron avant de fritter la structure de cône à une densité finale. Les ensembles de coupe peuvent être formés par ces procédés, et ces ensembles de coupe peuvent être utilisés dans les outils de forage dans le sol, comme par exemple les trépans rotatifs de forage souterrain et les élargisseurs.

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