Hello, I have been trying to get powder coating down for a while but I am having trouble getting the cured powder to have a smooth finish. Every time there is a orange peel effect or it is to light. There has never been a happy medium on the part. It will go straight from a rough service from shooting the powder to lightly, to being orange peeled with no good spots in between. I am really wondering what I am doing wrong. I had one person tell me I was applying to heavily so I applied lighter and lighter one several pieces and the orange peel was present until it turned rough from being to light.
I have tried coating both aluminum and steel with and without preheating with no difference in results. I have baked at temperatures above 400F to 350F with varied bake times from 15 minutes to 45 minutes and still have had no luck.
My current coating process is to sandblast the part then preheat if it is aluminum. If it is steel I usually don't bother preheating all though I did on the last piece and still had orange peel. After preheating I wipe the part down with acetone wait for it to evaporate and then apply the powder which was caswell's magic black. I then backed at 350F for 35 minutes total time in the oven. I had no luck with good results it still had the orange peel. So I am looking for any help or assistants you may be able to give me. It would be much appreciated. Thanks in advance.
Chris
I have tried coating both aluminum and steel with and without preheating with no difference in results. I have baked at temperatures above 400F to 350F with varied bake times from 15 minutes to 45 minutes and still have had no luck.
My current coating process is to sandblast the part then preheat if it is aluminum. If it is steel I usually don't bother preheating all though I did on the last piece and still had orange peel. After preheating I wipe the part down with acetone wait for it to evaporate and then apply the powder which was caswell's magic black. I then backed at 350F for 35 minutes total time in the oven. I had no luck with good results it still had the orange peel. So I am looking for any help or assistants you may be able to give me. It would be much appreciated. Thanks in advance.
Chris
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