METHOD OF NITRIDING PARTS IN GLOW DISCHARGE AT DIFFERENT DEPTH OF NITRATED LAYER Russian patent published in 2017 - IPC C23C8/36 

FIELD: technological processes.

SUBSTANCE: invention relates to chemical-thermal treatment and can be used in machine building and other industries for surface hardening materials. Method of nitriding a steel part in glow discharge with provision on said part sections with various depth of hardened layer involves vacuum heating of steel part in high-density nitrogen plasma, formed between surface of part and perforated screens for producing hollow cathode effect. Obtaining on said part sections with various depth of hardened layer is provided by controlling plasma density through perforated screens with given values of transparency, having different hole width and different distance between holes, and controlling distance from screens to surface of part.

EFFECT: production of nitrated part sections with different depth of hardened layer in one process cycle, higher process efficiency.

1 cl, 3 dwg, 1 ex