阴极电泳凭借其良好的耐腐蚀性能在汽车涂装中得到了广泛的应用,但也存在一些涂膜弊病。本文围绕某涂装生产线中出现的缩孔问题,通过试验分析得出该问题是由气泡在车顶和前盖下表面聚集,难以脱离排出槽液导致,通过调整表面流管和底部循环搅拌管喷嘴的方式解决了问题,对以后电泳涂装设备设计有一定的指导意义。

Since its predominant anti-erosion,cathodic electrophoretic coating has been widely used in automotive coating industry.This paper focused on the crater defect in an automobile coating production line.Through a series of experiments and analyses,the causes was find that bubbles were attached to the lower surface of hood and roof,and difficult to detach from the surface.The defect was eliminated by the way of adjusting the direction of some nozzles used for tank surface flow and tank bottom circulation.The study has.a guiding significance for the design of electrophoretic coating equipment in the future.