FIELD: metallurgy.
SUBSTANCE: metal product is arranged in the container with electroconductive powder medium containing an alloying element. Then, powder mixture is heated due to passing through it of electric current using electrodes; at that, as electrodes there used is container and product with the ratio of surface areas, which are equal to not less than 10:1. As electroconductive medium there used is powder of bituminous coal with grain size of 0.3-0.6 mm. Container is made in the form corresponding to the form of surface of the strengthened product that is equally spaced in the container.
EFFECT: accelerating diffusion saturation process, achieving uniform depth of the layer along the product perimetre, reducing power consumption and improving environmental friendliness of the process.
3 dwg, 1 ex
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