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PF Zone: Pretreatment for Powder

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Gardner Business Index: October 2016
Business expectations remain at the highest level since July 2015.
Powder Coating Clinic: Oil Seeping out of Large Welded Tubing
Q. We have a large part made out of tubing that is welded together. The tubing has a lot of oil seeping out of the welds when the part is heated and causes a defect in the cured film. We cannot get the oil out of the tubing in our washer. We tried cleaning up the defect and running it again, but oil still runs out. How can we get that oil out of the tubing?
Powder Coating Clinic: Touch-up Options for Powder Coated Parts
Q. I’ve been told that a powder coated part cannot be “touched-up.” I have some patio furniture that I had powder coated and the powder coating shop that did the work for me stripped the threads in holes used to rack the part. I can fix the threads by welding up the hole and re-taping the threads. The shop states the whole piece will need to be redone and they cannot address just the small area affected by the repair. Is this accurate? Is it true that powder coating cannot be touched up?
Powder Coating Clinic: Powder in Layers
Q. We are in the process of designing a new powder system for aluminum extrusions and building panels. Our current system uses a six-stage dip pretreatment process and a three-layer liquid paint process (prime, color coat, clear coat) that meets AAMA 2605 standards (American Architectural Manufacturers Association). What layers of coating should we use and can we can meet the AAMA 2605 standards with powder?
Celebrating the First 80 Years
Oak is the traditional gift for someone turning 80 years old, as it symbolizes longevity and strength, two hallmarks of what we feel our magazine has been with the surface finishing industry since its debut in 1936.

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