By paint: solvent-based paint coating, electrophoretic coating, powder coating
According to painting method: air spraying, airless spraying, electrostatic spraying, electrophoresis
According to the coating function: primer coating, intermediate coating, topcoat coating
Process: pre-treatment – primer – drying – medium coating – topcoat – drying – color
Coating is generally a multi-layer coating, which can be divided into single layer coating system (1C1B), double layer (2C2B), and three layers (3C3B) according to the number of layers of coating (COAT) and the number of drying (BAKE). ), four-layer (4C4B) and five-layer (5C5B) coating systems. The high decorative nature of a premium sedan generally uses a four-layer (4C4B) or five-layer (5C5B) coating system.
At present, the latest automotive coating process in China adopts: epoxy resin type electrophoretic primer, middle coat and top coat (the outermost layer of metal paint film and spray varnish)
Three-coat system: electrophoretic primer, middle coat, top coat (the outermost layer of metal paint film plus spray varnish).
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