Degreasing copper parts before coating
Degreasing copper parts is a different job from cleaning steel: the oxide, the acid sensitivity and the 0.4 mm of thermal growth all change the process.
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Surface treatment and powder coating
Coating failures are rarely the powder's fault. They are usually a cleaning, rinsing or conversion problem that happened before the part reached the booth. Ganesh runs seven-tank pretreatment, a 16 ft by 16 ft shot blast chamber, an 18 ft by 14 ft powder booth, a wet paint booth and a curing oven in-house. These guides cover each tank, degreasing by substrate, phosphating, powder versus wet paint, DFT and adhesion testing, and diagnosing blistering, pinholes and creeping corrosion.
Guides in this topic, page 4
Seven-tank pretreatment, phosphating, shot blasting, powder and wet paint selection, film thickness and the failure modes that show up two monsoons later.