FIELD: metallurgy.
SUBSTANCE: diffusion coating is applied by saturation of tool surface of hard alloy in lead-lithium eutectic melt with admixtures of copper, nickel and iron. Iron plates are added to said melt to be arranged nearby tool surface in amount required for saturation of iron melt to weight concentration of 1-10% of the melt total weight.
EFFECT: higher tightness and wear resistance.
2 cl, 1 tbl, 1 ex
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