PROCEDURE FOR ION-VACUUM CHEMICAL-THERMAL TREATMENT OF STEEL PART WITH THREADED SURFACE

摘要

FIELD: metallurgy. ^ SUBSTANCE: procedure consists in part heating, in nitriding during heating in nitrogen containing gas from 390 - 410C to 500 - 570C during 1 - 4 hours and in cooling from 500 - 570C to 350 - 400C during 40 - 60 minutes in plasma of glowing discharge directly upon heating. ^ EFFECT: upgraded quality and consumer qualities of threaded parts, increased efficiency and reduced expenditure of resources by nitriding during heating and cooling.