Powder Paint Fluid Bed Problems

With electrostatic spray processes one needs to monitor kva humidity grounding issues powder delivery issues gun maintenance and replacement of wear parts.

Powder paint fluid bed problems.

Keeping a close eye on the powder levels and the actual amount of powder on the bed is a smart idea. It s very difficult to get the part in and out of the fluidized bed coating tank quickly and still produce a consistent coating over the entire part. Four chamber fluid bed for powder painting. Check high voltage source is on.

Film build generally occurs rapidly over the first five mils. Fluidized bed powder coating is a process where a pre heated part is dipped into a tank of fluidized thermoplastic powder which is typically pvc or nylon. 1 poor charging inadequate powder build or wrap on part. With a fluidizing bed powder that is too fine can cause irregular coverage.

To get the best results with powder paint the paint needs to be fluid meaning that. Many people find that a single fluidized bed coating process is much easier to maintain than a bank of electrostatic spray guns. 1 high voltage source not providing enough kv at charging electrode or grid. Systematically check electrical continuity from voltage source to electrode grid including cable resistors and fuses1.

Air blowing large holes through powder surface. Powder level too low add powder until feed hopper is filled to proper level packed or moist powder manually loosen powder and fluidize with clean dry air check compressed air for oil water and room for high humidity obstructed membrane. If the powder due to reclaiming or efforts on the manufacturer s part is too fine it can cause all manner of trouble. I recently received a jig making kit as a present and i wanted to powder paint the freshly cast jigs.