500 kA大型铝电解槽槽壳破损原因分析及应对策略  

Analysis on causes for pot shell damages and countermeasures of 500 kA large-amperage aluminm reduction pots

作　　者：张刚刚[1] 施文学 张铁山 张明泉 张凌云 Zhang Ganggang;Shi Wenxue;Zhang Tieshan;Zhang Mingquan;Zhang Lingyun(Liancheng Branch of CHALCO,Lanzhou 730335,China)

机构地区：[1]中国铝业连城分公司,甘肃兰州730335

出　　处：《轻金属》2022年第10期24-30,共7页Light Metals

摘　　要：本文结合某厂500 kA电解系列长时间停产后再次复产时发现大量槽壳冷裂的特殊情况,从热应力及残余应力、温度和热疲劳等角度分析了槽壳破损的原因,讨论了破损机制,并提出了相应的修复方案。通过对此项工作的分析和讨论,希望给予其他企业一些借鉴和指导作用,提高电解槽的槽壳修复质量,延长槽壳使用寿命。In this paper,based on special cases of a large number of pot shell cold cracks found in a restarted 500 kA pot line after a long period of shutdown,the causes for pot shell damages are analyzed from perspectives of thermal stress,residual stress,temperature and thermal fatigue,etc.,meanwhile,the damage mechanism is discussed,and the corresponding repair plan is also prorposed.Through analysis and discussion of this work,it's hoped that some reference and guidance could be provided for other enterprises,thus improving the repair quality and extending the service life of pot shells in aluminum reuction pots.

关 键 词：500 kA电解系列 槽壳冷裂 槽壳修复 

分 类 号：TF821[冶金工程—有色金属冶金]