Water spotting refers to adherent water affecting the paint film when evaporating in the baking oven
Q1:
Roughening of the electrodeposited surface caused by bumping, at elevated temperatures, of rinse water
retained in a concave area on a horizontal surface.
A1:
- Place the workpiece at an angle. Allow the conveyor to oscillate.
- Provide an air blower to remove retained rinse water.
Q2:
Electrodeposited finish that looks stained, resulting from a higher-than-appropriate concentration of rinse
water.
A2:
- Check the ultrafilter permeate rate.
- Check whether the paint brought into the rinse water has increased.