Falling off of paint refers to the phenomenon that electrostatically sprayed powder paint falls off during coating or transportation of the coated workpiece.
Q1: Is the specified voltage applied?
A1:
- Inspect the spray gun and the voltage generator. If faulty, repair the device(s) immediately.
- The specified voltage range is from −70 to −100 kV.
Q2: Is the carrying air pressure too high?
A2:
- Inspect the air pressure and adjust to an appropriate air pressure.
- Note that the air pressure should vary with the discharge quantity.
Q3: Does the substrate vibrate substantially?
A3:
- Remove the factors that cause the vibration