FIELD: ferrous metallurgy. SUBSTANCE: steel parts are preliminarily subjected to surface alloying with nitride-forming elements using laser heating, after which parts are nitrogenized for 27 hr in ammonia medium at 540 C, after which ammonia feeding is stopped and parts are held at the same temperature for further 60-120 min. EFFECT: increased surface strength of parts. 1 tbl, 5 ex
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