Tungsten carbide powder and method of making for flame spraying

Details Tungsten carbide powder and method of making for flame spraying Tungsten carbide powder and method of making for flame spraying

1988-06-02

1989-10-10

Brody, Christopher W.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75251, 419 18, B22F 900

Patent

active

048729043

ABSTRACT:
A cobalt bonded tungsten carbide powder is produced by a method comprising preparing a mixture consisting of a first tungsten carbide powder having a particle size of -5 microns, a second tungsten carbide powder having a particle size of -44+10 microns, a cobalt powder having a particle size of -5 microns and a carbon powder having a particle size of -1 micron. The mixture has proportions, by weight totaling 100%, of about 10% to 30% first tungsten carbide, 40% to 80% second tungsten carbide, 8% to 25% cobalt and 0.5 to 3% carbon. The mixture is processed by compacting, sintering, crushing, and classifying to produce the cobalt bonded tungsten powder in a size range -100+10 microns.

REFERENCES:
patent: 3023490 (1962-06-01), Dawson
patent: 3419415 (1968-12-01), Dittrich
patent: 3512962 (1970-05-01), Holtz, Jr.
patent: 3515540 (1970-06-01), Meadows
patent: 3743499 (1973-07-01), Ramqvist
patent: 4136230 (1979-01-01), Patel
patent: 4402737 (1983-09-01), Krononwetter et al.

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