METHOD OF MAKING SOLDERED STRUCTURES OF POWER PLANTS

摘要

mechanical engineering; brazing and soldering. SUBSTANCE: proposed invention can be used in making structures containing maraging steel and operating at complex stressed state at temperature range from minus 253 to plus 500 C. First steel article are subjected to preliminary hardening with isothermal holding in process of heating for hardening at temperatures within the internal of AC1+20°;AC1+50°C. Then articles are heated for soldering with isothermal holding at temperature within the interval of AC1+20°;AC1+50°C. Soldering is carried out at temperatures within the interval of AC3+20°;AC3+100°C. Then quenching and tempering (aging) are carried out. EFFECT: improved mechanical properties of soldered structure material at preservation of high structural strength and operation reliability of soldered joints. 2 cl, 1 tbl