通过实验室和工业电解槽系统研究了铝电解槽阴极和槽壳的变形,从中获取钠膨胀系数并用于工业阴极和槽壳的应力场的模拟分析,在考虑温度梯度热应力和钠膨胀化学应力共同作用条件下,获得了工业槽焙烧、启动后槽壳的变形位移数值.用机械式位移计对350 kA石墨化阴极工业电解槽变形进行了长达360 d的现场测试和监测,模拟值与实测值吻合. Through the laboratory and industrial electrolyzer system, the deformation of the cathode and the shell of the aluminum reduction cell was studied. The sodium expansion coefficient was obtained and used to simulate the stress field of the industrial cathode and the shell. Taking into account the temperature gradient thermal stress and sodium expansion chemical stress Under the same conditions, the deformation and displacement values ​​of the trough shell after roasting and start-up of the industrial trough were obtained.The on-site testing and monitoring of the deformation of the 350 kA graphitized cathode electrolytic cell were carried out for 360 days with a mechanical displacement meter, The measured value is consistent.