How much air pressure is used for painting?

The normal air pressure for painting is 0.3 ~ 0.6 MPa. Spray painting: Spray painting is an artificial coating made of nitrocellulose, resin, pigment and solvent. Usually spray gun is used to spray evenly on the surface of the object, which is waterproof and oil-proof, and dries quickly. It is used to paint cars, airplanes, wood products, leather and so on. This substance is toxic and has a certain effect on the body. Different brands of spray paint have different toxicity due to different component contents. Pay special attention to safety when using, and avoid inhalation and skin contact. Pneumatic spraying method: Pneumatic spraying is one of the spraying methods. A method of spraying plastic or other materials uses compressed air to atomize paint and spray it from a nozzle. Suitable for coating porous materials and substrates that don't want to be penetrated. Pneumatic spraying can be divided into suction spraying and pressurized gas spraying.