In the electrophoresis process, the temperature of the bath solution will increase due to factors such as electrification, circulation of the bath pump, entry of heated workpieces (if using a drying furnace), and construction environment. The suitable working temperature for electrophoresis bath solution is 28 ± 2 ℃. Temperature deviation can affect the thickness and appearance of the coating, causing surface defects.
When the temperature is too low, the film thickness will decrease and the surface will become rough; When the temperature is too high, the paint thickness will increase, the paint film will be unstable, there will be surface defects, and it may also cause damage to the ultrafiltration device.
The temperature of the circulating electrophoresis tank solution is controlled through a stainless steel heat exchanger, which uses 7 ℃~15 ℃ water to cool or 30 ℃~45 ℃ water to heat the tank solution.