FIELD: weapons and ammunition.
SUBSTANCE: half-finished receiver is heated first in stagnated argon to 710-720°C at the heating rate of 25-35°C per minute, matured for a time ensuring alpha to gamma phase transition, then heated to tempering temperature of 1000°C, and cooled in argon flow with ageing at gamma to alpha phase transition temperature at the cooling rate of 30-35°C per minute.
EFFECT: improved stability and balance of receiver made of martensite ageing steel in standard and critical situations during shooting due to stable and homogeneous steel structure.
2 cl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF HIGH-TEMPERATURE ANNEALING OF HALF-FINISHED RECEIVER | 2013 |
|
RU2510807C1 |
| METHOD OF PROCESSING RECEIVER INTERFACE AND END SURFACES OF SMALL ARMS FOR ENGAGEMENT WITH INTERFACE AND END SURFACES OF BOLT | 2013 |
|
RU2510810C1 |
| PRODUCTION OF SURFACE LAYER PLASTIC STRUCTURE ON GUN BREECH FRAME FRONT LEDGE | 2013 |
|
RU2524268C1 |
| METHOD OF THERMALLY TREATING WELDED JOINTS OF MARAGING STEELS | 1996 |
|
RU2103382C1 |
| METHOD OF HEAT TREATMENT OF STRUCTURES | 1997 |
|
RU2129166C1 |
| STRUCTURED CASTING AUSAGING STEEL WITH HIGH STRENGTH-WEIGHT RATIO AND METHOD OF ITS PROCESSING | 2015 |
|
RU2625512C2 |
| PRODUCTION OF GUN BARREL | 2013 |
|
RU2525501C1 |
| PROCEDURE FOR ALLOYS AGE-HARDENING | 2008 |
|
RU2399684C2 |
| METHOD OF MANUFACTURING THIN-WALLED CYLINDRICAL SHELL FROM MARTENSITE-AGEING STEEL | 2006 |
|
RU2329113C2 |
| METHOD OF PRODUCTION OF HIGH-STRENGTH THIN-WALLED STEEL ARTICLES OF PRECISION GEOMETRIC SIZES AND DEVICE FOR REALIZATION OF THIS METHOD | 2004 |
|
RU2258087C1 |
