Pinholes In Powder Coating

Pinholes In Powder Coating. Various arc power levels , powder feed rates and gun substrate distances. Someone has done such an experiment:

Pinholes And Outgassing Troubleshooting Your Powder from reliantfinishingsystems.com

Suck holes are caused by air bub­bles that con­tract when cool­er than the sur­round­ing area, draw­ing with them the epoxy inward. Generators, forklifts, and trucks can all cause problems if their exhaust fumes get drawn into the powder coating appliances and leave an oily residue on parts. Orange peel is generally the result of one of two primary problems.

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