Brazing apparatus to manufacture composite compact components

Details Brazing apparatus to manufacture composite compact components Brazing apparatus to manufacture composite compact components

1979-12-10

1982-03-16

Czaja, Donald E.

Metal fusion bonding

With means to cool work or product

219 95, 219 85G, 228222, 228121, 228 41, B23K 3102

Patent

active

043197078

ABSTRACT:
A component comprised of a composite compact, preferably diamond, and a substrate bonded to the compact. A preferred embodiment of the component is a cutter for a drill bit. The compact is comprised of a layer of bonded diamond or boron nitride particles and a base layer of cemented carbide bonded, preferably under high temperatures and pressures, to the particulate layer. The particulate layer is degradable by expvsure to temperatures above a predetermined temperature. The substrate is bonded to the base layer of the compact with a filler metal which, to form a bond, requires the exposure of the surface to be bonded to a temperature substantially greater than the degradation temperature of the particulate layer. The component is fabricated by heating the base layer, filler metal and substrate to a temperature in excess of the degradation temperature while maintaining the temperature of the particulate layer below the degradation temperature via a heat sink.

REFERENCES:
patent: 2768595 (1956-10-01), Kalbow et al.
patent: 2768596 (1956-10-01), Kalbow et al.
patent: 3212852 (1965-10-01), Bundy
patent: 3351543 (1967-11-01), Vanderslice
patent: 3458341 (1969-07-01), Diefendorf
patent: 3554717 (1971-01-01), Shaffer et al.
patent: 3574580 (1971-04-01), Stromberg et al.
patent: 4101067 (1978-07-01), Sloan et al.
patent: 4144433 (1979-03-01), Zelahy et al.

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