Causes of Foam in Electrophoresis Tank and Its Effects on Workpiece Surface

The reason why the electrophoresis tank produces foam
There are mainly the following aspects:
1.Influence of coating materials: The volatility, surface tension and stability of materials such as electrophoretic coatings and solvents have a great influence on the generation of electrophoretic tank foam.
2.Improper use of electrophoresis tank fluid: Poor water quality, too high or too low tank fluid temperature, or too long stay of the electrophoresis workpiece in the tank can all lead to the generation of electrophoresis tank foam.
3.Unstable equipment operation: Failure of the electrophoresis equipment or unstable equipment operation will cause foam in the electrophoresis tank.

4.Effect of foam in electrophoresis tank on workpiece surface
The foam in the electrophoretic tank will produce "pitting" and other effects on the surface of the workpiece, which are mainly manifested as follows:
1.Reduce the gloss and smoothness of the electrophoretic coating, affecting the aesthetics.
2.Strengthen the adhesion between the electrophoretic coating and the substrate, increasing the difficulty of processing in mass production.
3.Increase the burden on the assembly line and logistics costs.

Solution
To solve the problem of foam in the electrophoresis tank, we can start from the following aspects:
1.Optimize the configuration and use of coating materials.
2.Check and maintain the electrophoresis equipment to ensure its stable operation.
3.Detect the requirements of the electrophoresis tank liquid for water quality and temperature, and meet these conditions as much as possible.
4.Add stirring equipment or replace suitable stirring equipment to prevent electrophoresis liquid from depositing and generating bubbles.
5.Adjust the production process to shorten the residence time of the workpiece in the electrophoresis tank as much as possible, and add filtering equipment in the tank if necessary.