Metal tungsten carbide composites and method of forming same

Details Metal tungsten carbide composites and method of forming same Metal tungsten carbide composites and method of forming same

B - Operations, Transporting

22

D

22/175

B22D 19/02 (2006.01)

Patent

CA 1068067

ABSTRACT OF THE DISCLOSURE 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.

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