METHOD thermochemical treatment of long HOLLOW STEEL DETAILS

摘要

FIELD: metallurgy.;SUBSTANCE: during treatment outer surface of part is coated with protective copper-bearing layer with thickness from 0.01 mm to 0.1 mm, and diffusion saturation of inner surface is performed by nitridation to the depth not more than 0.35 mm.;EFFECT: simplifying nitridation method of long hollow steel part and improving accuracy of geometrical dimensions of nitrided part.;1 ex