Classification, application and technological process of paint

Painting classification

According to coatings: solvent-based coatings,

electrophoresis

Painting,

powder

app; application

According to the painting method: air spraying,

Vacuum spraying

、

electrostatic coating

, electrophoresis

According to the coating function: primer coating,

China

Painting,

end

app; application

Process flow: pretreatment-primer-drying-intermediate coating-topcoat-drying-color mixing.

Painting generally belongs to

multilaminate

Paint COAT BAKE is divided into single-layer paint system (1C 1B), double-layer paint system (2C2B), three-layer paint system (3C3B), four-layer paint system (4C4B) and five-layer paint system (5C5B). The height of a limousine

decorative

Generally, a four-layer (4C4B) or five-layer (5C5B) coating system is adopted.

At present, the latest automobile painting technology in China adopts: epoxy electrophoretic primer, intermediate coat and top coat (the outermost layer of metal paint film is painted)

Three-coating system: electrophoretic primer, intermediate coating and topcoat (outermost metal paint film plus painting). The whole process of painting department is as follows:

White lower body-

handwork

Pre-cleaning-pretreatment-

Cathode electrophoresis

After cleaning-

Baking coating

car body

seal gum

spray

Vehicle bottom

PVC coating, paving exothermic dissolution

moist