Analysis of Poor Adhesion in Galvanized Sheet with Electrostatic Powder Spraying
This article introduced the problems of poor adhesion of the powder coating and large area peeling off of the coating on the galvanized sheet after electrostatic powder spraying.Through testing,analysis and verification in the laboratory and on site of the spraying production line,it was confirmed that the cause was the shutdown of the line leading to the high film weight of silane pre-treatment which reduced the adhesion of the powder coating.By simulating the shutdown time and detecting the weight of silane film,a clear guidance plan was provided for the production line,which improved production quality.
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