The cause of slag points during the powder coating
of aluminum profiles
The reason for the occurrence
1. The curing furnace has ash
2. The coating film is too thick or uneven
3. Pre-treatment cleaning is not clean
4. The surface of the profile has burrs
Countermeasures:
1. Clean the curing furnace regularly
2. Control the film thickness standard,
check the spray gun equipment
3. Increase the oil removal concentration
and increase the overflow of the sink
4. Control the surface of the extruded
profile, if there are burrs serious material to be sanding treatment
