Atomization principle: Air spraying generally with the working pressure of 0.3Mpa-0.6Mpa compressed air, high velocity to spray gun air nozzle flow, so that the nozzle around the formation of local vacuum, the paint is compressed air into the vacuum space, the paint atomized into small droplets, coated on the surface of the coated parts to form a continuous film.

Main features: simple structure, easy to operate, easy to change color, with the geometric shape of the workpiece to be painted to adjust the size of the spray fan surface, atomization effect is good. However, the paint mist of air spraying is easy to rebound and fly away, polluting the operating environment, and the paint utilization rate is only 25%-35%. Air spraying its paint and compressed air mixed contact, the air source must be installed dust, oil and water filter device, to ensure the quality of the film.

Introduction of spraying method

Air spraying

Principle of atomization

Air spraying generally uses the working pressure of 0.3Mpa-0.6Mpa compressed air to flow through the air nozzle of the spray gun at a high velocity, so that a local vacuum is formed around the nozzle. The paint is sucked into the vacuum space by the compressed air, and the paint is atomized into small droplets and coated on the surface of the coated part to form a continuous coating film.

Features and Applications

The main characteristics of air spraying are simple structure, convenient operation, easy to change color, can adjust the size of the spray fan surface with the geometric shape of the painted workpiece, atomization effect is good. However, the paint mist of air spraying is easy to rebound and fly away, polluting the operating environment, and the paint utilization rate is only 15%-30%. Air spraying coating and compressed air mixed contact, the air source must be installed dust, oil and water filter device, clean compressed air, to ensure the quality of the film.

The air source working pressure of air spraying is low, and the atomization of high viscosity paint is difficult. It is generally suitable for the spraying of decorative low viscosity paint.

In today's painting industry, air spray gun is the most used, especially for products with high coating quality requirements, such as senior cars, high-end furniture, etc., air spraying or air electrostatic spraying is used.