Abstract
The heat treatment of a welded rotor of grade 25Kh2NMFA steel for steam turbines of nuclear power plants was considered. A following heat treatment schedule was suggested: charging the rotor in to a furnace at 100-150 deg C, heating to 200-250 deg C and holding for 12 hrs; slow heating (10 deg C/h) to 400-450 deg C and holding for 12 hrs; slow heating to 630-640 deg C and holding for 50 hrs, cooling at a rate of 5 deg C/h down to 100 deg C, holding for 20 hrs and cooling with the furnace open. The proposed heat treatment schedule of a duration of 356 hrs ensures a temperature gradient throughout the cross section and the length of the rotor of not more than +-5 deg C, least deviations of geometric dimensions and makes possible machining finish to within 0-0.02 mm. Described are the particularities of the design of a roll-out hearth electric chamber furnace, measuring 13000x5500x5000 mm and built for the purpose of carrying out said heat treatment. The power rating of the furnace is 2850 kW.
Citation Formats
Kutasov, R F, Mukhina, M P, and Tustanovskii, A S.
Heat treatment of large-sized welded rotors of steam turbines for atomic power stations.
USSR: N. p.,
1977.
Web.
Kutasov, R F, Mukhina, M P, & Tustanovskii, A S.
Heat treatment of large-sized welded rotors of steam turbines for atomic power stations.
USSR.
Kutasov, R F, Mukhina, M P, and Tustanovskii, A S.
1977.
"Heat treatment of large-sized welded rotors of steam turbines for atomic power stations."
USSR.
@misc{etde_6512007,
title = {Heat treatment of large-sized welded rotors of steam turbines for atomic power stations}
author = {Kutasov, R F, Mukhina, M P, and Tustanovskii, A S}
abstractNote = {The heat treatment of a welded rotor of grade 25Kh2NMFA steel for steam turbines of nuclear power plants was considered. A following heat treatment schedule was suggested: charging the rotor in to a furnace at 100-150 deg C, heating to 200-250 deg C and holding for 12 hrs; slow heating (10 deg C/h) to 400-450 deg C and holding for 12 hrs; slow heating to 630-640 deg C and holding for 50 hrs, cooling at a rate of 5 deg C/h down to 100 deg C, holding for 20 hrs and cooling with the furnace open. The proposed heat treatment schedule of a duration of 356 hrs ensures a temperature gradient throughout the cross section and the length of the rotor of not more than +-5 deg C, least deviations of geometric dimensions and makes possible machining finish to within 0-0.02 mm. Described are the particularities of the design of a roll-out hearth electric chamber furnace, measuring 13000x5500x5000 mm and built for the purpose of carrying out said heat treatment. The power rating of the furnace is 2850 kW.}
journal = []
volume = {1}
journal type = {AC}
place = {USSR}
year = {1977}
month = {Jan}
}
title = {Heat treatment of large-sized welded rotors of steam turbines for atomic power stations}
author = {Kutasov, R F, Mukhina, M P, and Tustanovskii, A S}
abstractNote = {The heat treatment of a welded rotor of grade 25Kh2NMFA steel for steam turbines of nuclear power plants was considered. A following heat treatment schedule was suggested: charging the rotor in to a furnace at 100-150 deg C, heating to 200-250 deg C and holding for 12 hrs; slow heating (10 deg C/h) to 400-450 deg C and holding for 12 hrs; slow heating to 630-640 deg C and holding for 50 hrs, cooling at a rate of 5 deg C/h down to 100 deg C, holding for 20 hrs and cooling with the furnace open. The proposed heat treatment schedule of a duration of 356 hrs ensures a temperature gradient throughout the cross section and the length of the rotor of not more than +-5 deg C, least deviations of geometric dimensions and makes possible machining finish to within 0-0.02 mm. Described are the particularities of the design of a roll-out hearth electric chamber furnace, measuring 13000x5500x5000 mm and built for the purpose of carrying out said heat treatment. The power rating of the furnace is 2850 kW.}
journal = []
volume = {1}
journal type = {AC}
place = {USSR}
year = {1977}
month = {Jan}
}