Diamond bit steel body cutter pocket protection

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 10/55 (2006.01) B23B 51/00 (2006.01) B23B 51/02 (2006.01) B23P 15/32 (2006.01) E21B 10/42 (2006.01) E21B 10/43 (2006.01) E21B 10/54 (2006.01)

Patent

CA 2598143

A drill bit that includes a steel bit body having at least one blade thereon, at least one cutter pocket disposed on the at least one blade; at least one cutter disposed in the at least one cutter pocket; at least one recess formed in at least a portion of the surface of the at least one cutter pocket, wherein the recess is adjacent a leading face of the at least one blade; and an erosion resistant material in the at least one recess is disclosed.

Trépan comprenant un foret à corps en acier pourvu d'au moins une lame, d'au moins une poche de dispositif de coupe montée sur au moins une lame; d'au moins un dispositif de coupe monté sur une poche de dispositif de coupe, d'au moins un évidement formé dans au moins une partie de la surface d'au moins une poche de dispositif de coupe, dans laquelle l'évidement est adjacent à une face d'attaque d'au moins une lame. L'invention porte également sur un matériau résistant à l'usure dans au moins un évidement.

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