Patent ID: 8268452
Filing Date: 2012-09-18
Classification: B22F,E21B,Y10T

Abstract:
1. A method of forming an earth-boring rotary drill bit comprising: providing a bonding agent comprising a metal material at an interface between a first element and a second element; selecting the first element to comprise at least a portion of a bit body of the earth-boring rotary drill bit including a pocket sized and configured to receive at least a portion of a cutting element; selecting the first element to comprise a first green or brown structure comprising hard particles and a metal or metal alloy matrix material; selecting the second element to comprise at least a portion of a cutting element; selecting the second element to comprise a second green or brown structure comprising hard particles and a metal or metal alloy matrix material; and sintering the first element, the second element, and the bonding agent to form a bond between a particle-matrix composite material of the first element and a particle-matrix composite material of the second element along the interface.