Patent ID: 6779951
Filing Date: 2004-08-24
Classification: B22F,B32B,C23C,E21B,Y10T

Abstract:
A drill insert for use in a twist drill bit, comprising:(A) a substrate having a top surface; (B) a layer of superabrasive material, having a first surface and a second surface, said first surface being bonded to said top surface of said substrate; and (C) a multi-metal layer, having a first surface and a second surface, wherein said first surface of said multi-metal layer is sintered to said second surface of said layer of superabrasive material, and wherein said second surface of said multi-metal layer is bonded to a molybdenum top layer, wherein said multi-metal layer is a single layer that further comprises an alloy of at least two metals, wherein said sintering of said multi-metal layer and said bonding of said molybdenum top layer is performed using a high pressure/high temperature press.