For several years we have operated our powder system without a room to enclose the booths and application process. It has worked out OK, but we need to make some adjustment for different humidity conditions. Is the cost of adding the room is justified?
What issues should we consider in order to evaluate different suppliers and pick the best one? We know that the price per pound is one item, but how can we be sure it is good powder?
We are planning to apply powder coating over cast iron drains that will be cemented into the floor. We have used epoxy liquid paint for this application, but we are interested in switching to epoxy powder. Will the powder adhere to the cast iron material?
The parts look good coming out of the washer and there are no obvious stains. The clear coat is applied in an automated booth and it looks fine before it is cured, but when it comes out of the oven, there are brown spots in the film that look like drips of oil.
Some of our parts show water spots through the coating after it is cured. You can see the outline of the spot through the film, especially with some of the lighter colors.
What tests would you recommend if you want to measure Faraday Cage effect on the actual part to see how good the coating has covered and protected the part?
We get some blemishes on parts when we recoat them that are sometimes referred to as back-ionization and in some cases pinholes through the coating. How can we avoid these marks on the recoated parts?
What is the effect of water conductivity on the pretreatment process and final powder coating? Will it affect the corrosion resistance and salt spray results?