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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
Color Change
Are color changes for powder that are under one minute really possible? I spray all manual in one booth, but I have automatic guns in the other one, and we do reclaim some of our colors, but not all of them.
Ask an Expert Published: 4/13/2012
Repair/Rework on Powder
Is there an industry standard with regard to recoating that we can adopt?
Ask an Expert Published: 3/1/2012
Requirements for Coating Aluminum
Q. I wish to powder coat a part that is die cast aluminum used for exterior luminaire housings. My question is can you explain the basic processes prior to coating and do I need to specify a special powder or are all powder coating materials rated f...
Ask an Expert Published: 12/14/2011
Outdoor Finish System
I am the manager of quality control for my company, which manufactures sports and playground equipment. One of our product lines is basketball equipment—pole, backboard and hoop—that is used outdoors. Presently, we powder coat the equipment, but we ...
Ask an Expert Published: 11/23/2011
Metal Preparation of Steel
We are planning to powder coat the part with a TGIC polyester, but we do not have a system yet. Will it be acceptable to blast the surface and not add any chemical pretreatment? Do I need a primer coat under the TGIC polyester?
Ask an Expert Published: 10/25/2011

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