Pretreatment / electrophoresis equipment
Pretreatment is the basis of the coating process and has a great influence on the quality of the coating. Pretreatment includes major processes such as degreasing, pickling, surface conditioning, and phosphating. Degreasing is the basis of the foundation, and the cleanliness of the surface of the workpiece directly affects the quality of subsequent processes. Pickling is mainly used to clean the scale of hot-rolled steel sheets. It is mainly used for the cleaning of frames and wheels in automotive painting. Pickling can seriously pollute the workshop environment, and should not be used instead of shot blasting. The phosphating process can improve the adhesion of the surface of the workpiece and also improve the corrosion resistance of the electrophoretic layer.
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