FIELD: metallurgy.
SUBSTANCE: proposed method comprises application of cermet paste on part surface to be hardened and heating to smelting of said paste and part surface layer by indirect electric arc initiated between graphite electrodes. At said heating, difference of potentials is created between graphite electrodes and part surface. Then, the part with applied cermet coating is heated to quenching temperature, held thereat and subjected to quenching in industrial or transformer oil. Thereafter, it is tempered and air cooled. In particular cases, part with applied cermet coating is heated at quenching up to 830°C and held thereat for 5 minutes. At tempering, the part with applied cermet surface is heated to 185°C and held thereat for 2 minutes.
EFFECT: higher hardness and wear resistance.
3 cl, 1 dwg
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