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Preparing Steel for Powder Coating
We powder paint steel machinery structures and have several questions.
Ask an Expert Published: 7/25/2013
Adhesion over Powder Coated Surfaces
Is there a way to improve adhesion of two-component polyurethane adhesives to polyester- and epoxy-based powder-coated surfaces?
Ask an Expert Published: 3/25/2013
Paint Over Powder Coating
Can we use water-based paint for touch up on powder-coated parts? Is any surface preparation necessary? What should the curing time and temperature be?
Ask an Expert Published: 1/31/2013
Proper Racking
Is there any way to qualify the impact of racking on the powder coating process?
Ask an Expert Published: 12/13/2012
Discoloration of Powder
n order to powder coat a grey nylon furniture part, I preheat the part, powder coat it with a white coating, cure the white coating, and then apply a powder clear coat over the white and cure that. What could be causing the part to come out of the o...
Ask an Expert Published: 11/2/2012
Powder on Zinc-Plated Steel
What is the correct process for powder coating after zinc plating on steel?
Ask an Expert Published: 9/19/2012
Uniform Film Thickness
How can we set up our racks and adjust our spray guns to get more uniform powder coating coverage?
Ask an Expert Published: 9/18/2012
Powder on Galvaneal
We have customers that want a smooth powder coating on a galvaneal finish. We prep with a light alcohol wipe, prebake the parts to allow for off-gassing, then spray with a smooth powder. We are having problems with “craters” and specs, so the surfac...
Ask an Expert Published: 7/20/2012
Powder Touchup
Our powder booths have an automatic application area followed by two manual touch-up stations. We have ongoing problems with light coating in areas of the parts, requiring manual touch-up. Areas around welds, seams and inside corners do not get the ...
Ask an Expert Published: 6/21/2012
Star Bursts in the Coating
We are using a wrinkle dark gray powder and often have a problem with “star bursts” all over the product. The stars are visible in the dry film and they do not flow out in the cure oven. We also spray a wrinkle black and get this problem occasionall...
Ask an Expert Published: 5/14/2012

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