FIELD: metallurgy.
SUBSTANCE: parts are preliminary surface locally alloyed with nitride-forming elements. On surface of parts there is applied coating at laser heating to temperature T=690-710°C and it is conditioned during 3-4 hours. Further, there is performed low-temperature nitriding at heating to temperature T=570-590°C and conditioning during 6-8 hours in ammonia medium.
EFFECT: uniform on surface strengthened layer; reduced duration of steel parts nitriding; maintaining high hardness of layer.
1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| SURFACE HARDENING METHOD OF STEEL PART | 2018 |
|
RU2688011C1 |
| SURFACE HARDENING METHOD OF STEEL PART | 2018 |
|
RU2688009C1 |
| METHOD FOR HIGH-TEMPERATURE NITROGENIZATION OF STEEL PARTS | 1998 |
|
RU2148677C1 |
| METHOD FOR HIGH-TEMPERATURE NITROGENIZATION OF STEEL PARTS | 1998 |
|
RU2148676C1 |
| METHOD OF SURFACE ALLOYING OF PARTS FROM STEEL 40X | 2019 |
|
RU2716177C1 |
| PROCEDURE FOR SURFACE ALLOYING PARTS OF STEEL 40 | 2009 |
|
RU2428503C2 |
| METHOD FOR SURFACE BORATION OF PARTS FROM STEEL 40 | 2013 |
|
RU2539128C1 |
| METHOD OF LOW-TEMPERATURE NITRIDING OF STEELS | 0 |
|
SU1611983A1 |
| METHOD FOR SURFACE HARDENING FOR PRECIPITATION HARDENING STEELS | 2020 |
|
RU2749008C1 |
| METHOD OF LOW-TEMPERATURE NITRIDING OF STEELS | 0 |
|
SU1509420A1 |
