为了研究磷化液污染电泳槽液对漆膜固化和性能的影响并提供解决方案，介绍了磷化液和电泳涂料的主要成分，阐述了电泳涂料的成膜原理和固化机理；通过实验模拟磷化液对电泳槽液的污染情况，并测定污染后电泳槽液的参数变化和电泳漆膜固化效果的变化；通过加入醋酸钇助剂的试验，模拟解决电泳槽液中的磷化污染。结果表明，磷化污染会导致含铋类电泳漆膜固化温度升高，加入醋酸钇可以有效降低槽液中的磷元素，实现对电泳槽液和漆膜品质的有效管控，提高电泳涂装工艺的稳定性和产品质量。

To study the effects of phosphating pollution on the curing of electrophoretic bath and the performance of the resulting paint film，as well as to provide adjustment methods，this research begins by introducing the main components of phosphating solutions and electrophoretic paints，and explaining the film formation principle and curing mechanism of electrophoretic paints. Subsequently，experiments are conducted to simulate the pollution of the electrophoretic bath by the phosphating solution，and the changes in the bath's parameters and the curing effect of electrophoresis are measured. Finally，experiments are carried out to simulate the adjustment of phosphorus contamination in the electrophoretic bath by adding yttrium acetate. The results indicate that phosphating pollution causes an increase in the curing temperature of bismuth-containing electrophoretic bath，and the addition of yttrium acetate can effectively reduce the phosphorus content in the bath solution，thereby achieving effective control over the quality of electrophoretic bath solution and paint film，enhancing the stability of the electrophoretic painting process and the quality of the products.