Welding repair of the steam and gas turbines rotors made of Gr-Mo-V steel
DOI:
https://doi.org/10.3989/revmetalm.1999.v35.i2.612Keywords:
Steam and gas turbine rotors, Typical failure cases, Weldability of Cr-Mo-V steels, Repairing welding technology in-situAbstract
An analysis of typical steam turbine and gas turbine rotor failures is carried out. On the base of the rotors different failure causes and their mode of occurring, an evaluation of the weldability of the Cr-Mo-V steels and the classification of the common turbine rotors repair possibilities is presented. The developing of specific in-situ welding repair process of the damaged 20.65 MW gas turbine rotor is described. After repair, the rotor was put back into service.
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