FIELD: machine building.
SUBSTANCE: procedure for surface of diamond grains roughing consists in mixing diamond grains with metal powder and in heating obtained mixture to temperature of 800-1100°C in vacuum as high, as 10-2-10-4 mm. As metal powders there are taken powders of iron, nickel, cobalt, manganese, chromium, their alloys or mixtures. Powders not inter-reacting with diamond grains at heating can be added to the mixture.
EFFECT: fabrication of diamond grains with optimal amount of recesses, possessing specified geometric parametres; reduced losses of diamond material and maintaining strength characteristics of grains.
4 cl, 1 dwg
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