汽轮机的转子是汽轮发电机重要部件,它处在极其复杂的应力状态下工作的,而其中叶轮的工作更加繁重,长期在蒸汽介质中高速运转,特别是最后几级叶轮工作条件是在湿蒸汽中,另外,大功率汽轮机的长叶片和有些汽轮机组的叶轮制造工艺粗糙、装配质量低劣,造成了机组运行过程中产生裂纹,致使叶轮发生飞裂事故。自从1965年5月郑州电厂~#4机末级叶轮飞裂事故以后,各电厂和有关单位均对汽轮机 Turbine rotor is an important component of a turbogenerator, it is in extremely complex stress conditions, and in which impeller work more heavy, long-term operation in the steam medium at high speed, especially the last few impeller working conditions are wet In addition, the long vanes of high-power steam turbines and the impellers of some steam turbines have rough manufacturing processes and poor assembly quality, resulting in cracks during operation of the generating units, resulting in fissuring of impellers. Since May 1965, Zhengzhou Power Plant ~ # 4 last-class flywheel fission accident, the power plant and the relevant units are on the steam turbine