FIELD: production methods.
SUBSTANCE: it is made the azotization and bright hardener by vacuum heating in plasma of heighten density, formed between the product and screen by creating the effect of full cathode. The plasma of heighten density is formed from mixture with the following ratio, mass %: azoth 50-80, argon 10-25, acetylene 10-25. The azotization is produced under the temperature 700-850°С. the bright hardener is realized by heating from the temperature of azotization up to 900-1100°С, holding during 15-30 min and sudden cooling in the stream of helium, which exceeds the critical temperature of steel hardiness. Then it is done the deep drawing under 250-350°С.
EFFECT: it is increased the contact longevity and durability of harden layer.
1 ex, 1 dwg
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