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上海电机厂新研制开发的5750kW电机,其转轴材料为34CrMolA,直径为1m,净重为32.5t,电枢支架材料为16Mn采用公盈联接传传递力矩,公盈量为0.960～1.106mm,因特殊需要,轴与支架采用冷热组合套装新工艺,即将转轴冷却到-40～-50℃,而支架同时加热到170℃,进行套装。为此,该厂委托上海发电设备成套设计研究所进行工艺模拟试验。模拟试验的目的是测出转轴在冷却时的温度分布和应力分布;测定转轴在冷却过程中的收缩量;
Shanghai Electric Works newly developed 5750kW motor, the shaft material is 34CrMolA, a diameter of 1m, net weight of 32.5t, 16Mn armature holder material is connected using public surplus transmission torque, public surplus volume of 0.960 ~ 1.106mm, due to special Need, shaft and bracket using hot and cold combination of new technology package, the shaft is about to cool to -40 ~ -50 ℃, while the bracket heated to 170 ℃, set. To this end, the plant commissioned Shanghai Institute of complete sets of power generation equipment for process simulation test. The purpose of the simulation test is to measure the temperature distribution and stress distribution of the shaft during cooling; to determine the amount of shrinkage of the shaft during cooling;