Methods for applying wear-resistant material to exterior...

E - Fixed Constructions – 21 – B

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E21B 10/00 (2006.01)

Patent

CA 2662966

Earth-boring tools include wear-resistant materials disposed in at least one recess formed in an exterior surface of a body thereof. Exposed surfaces of the wear-resistant material are substantially level with exterior surfaces of the body adjacent the wear-resistant material. In some embodiments, recesses may be formed in formation-engaging surfaces of blades of earth-boring rotary tools, adjacent one or more inserts secured to bodies of earth-boring tools, or adjacent one or more cutting elements secured to bodies of earth-boring tools. Methods of forming earth-boring tools include filling one or more recesses formed in an exterior surface of a body with wear-resistant material and causing exposed surfaces of the wear-resistant material to be substantially level with the exterior surface of the body.

L'invention concerne des outils de forage dans le sol comportant des matériaux résistants à l'usure disposés dans au moins un retrait formé dans une surface extérieure d'un corps de ceux-ci. Les surfaces exposées du matériau résistant à l'usure sont sensiblement affleurantes par rapport aux surfaces extérieures du corps adjacentes au matériau résistant à l'usure. Dans certains modes de réalisation, des retraits peuvent être constitués dans les surfaces d'engagement de formation de pales d'outils rotatifs de forage dans le sol, adjacents à un ou plusieurs inserts fixés aux corps d'outils de forage dans le sol, ou adjacents à un ou plusieurs éléments de découpe fixés aux corps d'outils de forage dans le sol. Les procédés de formation d'outils de forage dans le sol consistent à remplir un ou plusieurs retraits formés dans une surface extérieure d'un corps présentant un matériau résistant à l'usure rendant les surfaces exposées du matériau résistant à l'usure sensiblement affleurantes par rapport à la surface externe du corps.

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