Patent ID: 8758462
Filing Date: 2014-06-24
Classification: B22F,B24D,C22C,E21B

Abstract:
1. A method for applying an abrasive wear-resistant material to a surface of a drill bit for drilling subterranean formations, the method comprising: mixing a plurality of −20 ASTM mesh sintered tungsten carbide pellets and a plurality of −100 ASTM mesh cast tungsten carbide pellets in a matrix material to provide a pre-application abrasive wear-resistant material, wherein: melting the matrix material comprising heating at least a portion of the pre-application abrasive wear-resistant material to a temperature above the melting point of the matrix material and less than about 1200° C. to form a molten matrix material; applying the molten matrix material, at least some of the sintered tungsten carbide pellets, and at least some of the cast tungsten carbide pellets to at least a portion of an outer surface of a drill bit and over an interface between a body of the drill bit and a cutting element without melting the sintered tungsten carbide pellets and without melting the cast tungsten carbide; and solidifying the molten matrix material over the interface between the body of the drill bit and the cutting element.