System, method, and apparatus for enhancing the durability...

C - Chemistry – Metallurgy – 30 – B

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C30B 33/06 (2006.01) C30B 29/36 (2006.01) E21B 10/46 (2006.01) E21B 10/567 (2006.01)

Patent

CA 2625521

An earth-boring drill bit having a bit body with a cutting component formed from a tungsten carbide composite material is disclosed. The composite material includes a binder and tungsten carbide crystals comprising sintered pellets. The composite material may be used as a hardfacing on the body and/or cutting elements, or be used to form portions or all of the body and cutting elements. The pellets may be formed with a single mode or multi-modal size distribution of the crystals.

Outil de forage de terrain comportant un corps d~outil doté d~un élément de coupe composé d~un matériau composite à base de carbure de tungstène. Le matériau composite comprend un liant et des cristaux de carbure de tungstène incorporant des pastilles frittées. Le matériau composite peut être utilisé comme glaçage sur le corps d~outil et/ou les éléments de coupe, ou pour former certaines parties ou la totalité du corps d~outil et des éléments de coupe. Les pastilles peuvent être formées avec une distribution unimodale ou multimodale de la taille des cristaux.

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