FIELD: metallurgy.
SUBSTANCE: thermal treatment of the weld consists in its heating to temperature not exceeding the point Ac1 at the rate of 30-50°C/h. Then, it is cured at preset temperature and cooled down along with the furnace. Note here that heating is performed in stepwise manner, first to 450±10°C with curing for 5-10 h and, then, to 650±10°C. Cooling in furnace is conducted to 150°C at the rate of 30-50°C/h and, then, in air.
EFFECT: improved structure of the weld, better operating performances under low-temperature impact straining.
2 tbl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| HEAT TREATMENT METHOD OF WELDED JOINTS OF LOW CARBON FERRITE-PEARLITE STEELS | 2005 |
|
RU2299252C1 |
| PROCEDURE FOR HEAT TREATMENT OF FLATS OUT OF LOW CARBON FERRITE-PEARLITE STEEL | 2009 |
|
RU2414517C1 |
| PROCEDURE FOR THERMAL TREATMENT OF FLAT OF LOW CARBON FERRITE-PEARLITE STEEL | 2009 |
|
RU2427653C1 |
| ROLLED STOCK MANUFACTURING METHOD | 2012 |
|
RU2479637C1 |
| METHOD OF THERMODIFFUSION ZINC COATING FASTENERS FROM BAINITE CLASS STEELS WITH SIMULTANEOUS INCREASE OF COLD RESISTANCE THEREOF | 2015 |
|
RU2607505C1 |
| THERMAL TREATMENT METHOD OF SEMI-FINISHED PRODUCTS FROM HYPOPEARLITIC STEELS | 2008 |
|
RU2373292C1 |
| METHOD FOR MAKING WELDED ARTICLES OF LOW-CARBON, LOW-ALLOY AND PLAIN STEELS | 2003 |
|
RU2235628C1 |
| RECONDITIONING OF ARTICLES FROM LOW-CARBON PERLITE STEEL AFTER OPERATION | 2013 |
|
RU2559598C2 |
| PROCEDURE FOR COMPLEX THERMAL TREATMENT OF LARGE-SIZE FORGED BLANKS OF CHROMIUM-MOLYBDENUM-VANADIUM STEEL | 2010 |
|
RU2431686C1 |
| METHOD OF PRODUCTION OF SUPERSTRENGTH WELDABLE STEELS | 1998 |
|
RU2210603C2 |
