Pretreatment for Powder Coating
Controlling A Fluidized Bed Level
I am having problems finding out the parameters for my fluid bed powder. Perhaps I have already found out where my problem...I am using bad material as fluidizing plate. Fluidizing plate is a extremely fine porous polyethylene plate. Can you help?
Read MoreControlling Coating Thickness
In our line, we use fluidized bed coating process to coat the baskets, made of 1008 cold drawn wires. I have some problems with the coating line and wonder if there is something we can do. In our production, the thickness of the coatings are different from each other. Another problem is that there are some pin-holes on the baskets. Some points are not covered by powder.
Read MoreRemoving Rust, Mill Scale And Oils In One Step
I always see the typical pretreatment stages to be a cleaner, rinse, phosphate, rinse, sealer, rinse or not. Nowhere do I see anything to deal with the rust and mill scale from the HRS steel. Is there a product that removes the rust, mill scale and oils in one step? Or are there more steps required, I can honestly say most everything I ever read about seems like a perfect world where the only thing the steel has on it is oils.
Read MoreDisposing Contaminated Powder
We are interested to find a cheaper way of disposing of contaminated powder. Are we allowed to “throw away” the powder in our dumpster?
Read MorePowder Adhesion to Anodized Parts
Are there any inherent problems with powder coating over black anodized aluminum parts? Is it better (or possible) to black anodize after powder coating?
Read MoreLoss of Adhesion and Corrosion Failure on CRS Frames
On some of the CRS frames (used to build industrial equipment) that I have used wherein we specify powder coating, I have noticed the paint peel off with heavy signs of rust underneath. Can you please help explain the reason for this and what it is you think the painter is doing wrong?
Read MoreImproving Adhesion of Thermoplastic Powder
The issue is that the supplier’s black PVC coating, applied at 8–10 mils, over a 304 stainless plate, welded onto a 1008 low carbon steel grid will not adhere to the stainless portion. The coating adheres well to the grid but peels away from the stainless plate. Since we can’t substitute the stainless for another material, is there a chemical treatment or sub-primer that could be sprayed on the steel, prior to the fluidized powder, to improve adhesion? Or can you make suggested changes to the pre-heat, time, temps, etc.?
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