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全电流条件下大修槽阴极钢棒焊接技术研究与试验

时间 2010-08-11 点击 2118

电解槽大修时,需要把阴极钢棒与外部的母线焊接连通,这一操作必须在电解厂房完成。阴极钢棒焊接部位处于上、下游电解槽及自身母线电流产生的强磁场中,钢棒头磁性较强,焊接时偏弧和飞溅严重,无法进行常规焊接。
    通过对中孚320kA铝电解槽进行研究和试验,经过现场测量、槽母线配置分析及电、磁计算后,将电解槽划分为几个区域,采用电流平衡和电磁补偿措施分别调整各施焊区域的磁感应强度,使区域内的磁场数值降低到能够顺利焊接的范围,从而保证钢棒能够很好地进行焊接。同理,分步调整各区的磁场强度,最终实现全部焊接。

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