A method for fabricating a drill bit comprising a plurality of composite compact cutters by furnace brazing each cutter in a recess in the crown of the drill bit. In one embodiment, each cutter is comprised of a mass of bonded polycrystalline abrasive, a substrate bonded to said abrasive mass and a thin...http://www.google.es/patents/US4156329?utm_source=gb-gplus-sharePatente US4156329 - Method for fabricating a rotary drill bit and composite compact cutters therefor
Method for fabricating a rotary drill bit and composite compact cutters therefor
