【摘要】 对215MW汽轮机断裂的对轮螺栓做断口宏观、微观分析,化学元素分析,扭转试验及受力分析计算,结果表明汽轮机组在事故中,中压-低压转子对轮螺栓和发电机-励磁机转子对轮螺柱的失效类型为:过载剪切断裂,同时局部挤压变形,这是由于事故过程中轴系受到冲击扭矩作用而引起的。更多还原

【Abstract】 A macro and micro and chemical element analysis was made on fracture of ruptured coupling bolts,torsion test was performed and stress analysis and calculation were made,the results show that when the steam turbine had failure,MP-LP rotor coupling bolts and generator-exciter rotor coupling bolts failure were classified as overload shear fracture with partial deformation .This is because of the impact torque on shaft when failure occurred.更多还原