METHOD OF MANUFACTURING CARBIDE GRANULES Russian patent published in 2017 - IPC C22C29/08 B22F9/04 B22F1/02 C22C1/04 

FIELD: technological processes.

SUBSTANCE: invention refers to the manufacture of carbide granules, consisting of mixing tungsten carbide and cobalt powders, plasticizing the obtained mixture using rubber dissolved in gasoline, pressing, milling, sieve dividing into fractions with the screening rates of the granules of up to 400 microns and, at least, 130 microns, mixing the screened granules with powder of more fine inert non-sintered filling, annealing, allocating the sintered granules by sieve screening of inert powder filling. The sintered granules obtained are charged into the attritor with carbide-forming metal powder and processed in the medium of inert gas with intermediate removal of contaminated powder, and then are annealed in a vacuum at a temperature of 1050-1100°C for 2-4 h obtaining carbide granules with a carbide layer on the surface.

EFFECT: production of carbide granules with increased wear resistance and hardness that can be used as a wear-resistant binder filler in an abrasive tool for processing materials with a high, more than 65 HRC, hardness.

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