METHOD OF HARD FACING OF METAL ARTICLES Russian patent published in 2001 - IPC

FIELD: mechanical engineering, particularly, hard facing of metal articles, for instance, stamping tools. SUBSTANCE: method includes application of layer of powder of metal carbide and metal binder to article surface and sintering them in vacuum. In this case, metal binder is used as a nickel-titanium powder. Layer of powder of metal carbide and metal binder includes components in the following ratio, wt.%: nickel, 12.7-13.4; titanium, 64.-7.5; metal carbide, the balance. Additionally introduced is intermediate layer between sintered layer and article surface as a nickel foil at least 0.05 mm thick. Sintering in vacuum is performed at rarefaction of not less than 5 x 10^-3 mm Hg. EFFECT: higher strength of adhesion of hard alloy layer with article surface with absent friability of applied layer.