FIELD: process engineering.
SUBSTANCE: invention relates to thermal and chemical-thermal processing and can be used in machine building, etc. Proposed process comprises nitride hardening followed by annealing. Nitride hardening is executed in vacuum chamber in gas mix of 15 wt % of nitrogen and 85 wt % of argon at 650-700°C by vacuum heating in high-density plasma with the effect of hollow cathode. Said high-density plasma is generated between the part and perforated shield made of titanium alloy. Then, vacuum diffusion annealing is performed in argon at 800-850°C.
EFFECT: higher hardness and contact wear-resistance at lower working pressure and decreased holding interval.
3 dwg, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MODIFICATION OF SURFACE OF PRODUCTS FROM TITANIC ALLOYS IN GLOW DISCHARGE | 2014 |
|
RU2562187C1 |
| MODIFICATION METHOD OF SURFACE OF ITEMS FROM TITANIUM ALLOYS IN VACUUM | 2014 |
|
RU2562185C1 |
| METHOD FOR HIGH-TEMPERATURE NITRIDING OF ITEMS MADE FROM TITANIUM ALLOYS | 2015 |
|
RU2611607C2 |
| METHOD FOR HIGH DENSITY PLASMA NITRIDNG | 2015 |
|
RU2611251C2 |
| METHOD FOR LOW-TEMPERATURE ION NITRIDING OF TITANIUM ALLOYS | 2017 |
|
RU2633867C1 |
| PROCEDURE FOR CREATION OF MACRO NON-UNIFORM STRUCTURE OF MATERIAL AT NITRIDING | 2009 |
|
RU2418096C2 |
| PROCEDURE FOR FORMING NON-UNIFORM STRUCTURE OF MATERIAL AT NITRIDING IN GLOW DISCHARGE | 2009 |
|
RU2409699C1 |
| METHOD OF LOCAL MATERIAL TREATMENT WITH EFFECT OF HOLLOW CATHODE DURING IONIC NITRIDING | 2013 |
|
RU2534697C1 |
| METHOD OF COMBINED PLASMA SURFACE TREATMENT OF ITEMS FROM TITANIUM ALLOYS | 2017 |
|
RU2671026C1 |
| METHOD FOR LOW-TEMERATURE ION NITRIDING OF TITANIUM ALLOYS WITH CONSTANT PUMPING OF A GAS MIXTURE | 2018 |
|
RU2687616C1 |
