Method of forming metal tungsten carbide composites

Details Method of forming metal tungsten carbide composites Method of forming metal tungsten carbide composites

1976-03-18

1977-05-24

Shore, Ronald J.

Metal founding

Process

Shaping liquid metal against a forming surface

164100, 75240, 75123CB, 75123K, B22D 1902

Patent

active

040249026

ABSTRACT:
Composites consisting of sintered tungsten carbide particles in a local matrix of a steel alloy having a carbon, cobalt and tungsten content are prepared by placing particles of tungsten carbide with cobalt binder, at least some of which are larger in size than those desired in the final composite in a mold. Matrixing alloy having little or no tungsten content is heated above its melting temperature and then poured into the relatively cold mold. The carbon, tungsten and cobalt dissolve at the outer surfaces of the particles and diffuse into the alloy which is allowed to naturally cool and solidify.

REFERENCES:
patent: 3149411 (1964-09-01), Smiley et al.
patent: 3175260 (1965-03-01), Bridwell et al.
patent: 3258817 (1966-07-01), Smiley

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