Air spraying defects and treatment methods
In the air spraying technology, there may be a variety of different defects, the causes of these defects and the corresponding treatment methods have many similarities with brush painting. The following are some types of defects related to air spraying technology, causes and treatment methods:

Stream suspension: Causes
Uneven spraying pressure.

The spraying distance is too close.

The spraying speed is not balanced with the amount of paint produced.

Excessive spraying.

The spray Angle is incorrect.

The spraying environment temperature is too low.

The nozzle is too large, the pressure is too high, and the paint output is too large.

Treatment method:

Control spraying pressure.

Keep the distance between 15 and 25cm.

Adjust the spray speed to maintain a balance with the paint output.

Control the amount of spray.

Keep spraying vertically.

Increase the ambient temperature.

Select the appropriate nozzle and pressure to control the amount of paint.

Air spraying defects and treatment methods

Bubble: Cause
The filter system of the sprayer failed.

Too thick a spray.

The spray gun pressure is too large, the spray distance is too far.

The solvent evaporates too quickly.

Treatment method:

Check and repair filtration system.

Control the amount of spray.

Control spraying pressure and distance.

Add appropriate amount of slowly volatilizing solvent.

Whiteness: indicates the cause
Water was mixed into the paint.

The humidity in the spray room (cabinet) is too high.

The wind speed in the spray room (cabinet) is too high.

Low boiling point solvent is added too much.

Treatment method:

Check the oil-water separator.

Control the relative humidity in the spray room (cabinet).

Control the wind speed between 50 and 80cm/s.

Control the amount of low boiling point solvent added.

Air spraying defects and treatment methods

Orange peel: Cause
The spraying pressure is insufficient, and the spray spray effect is poor.

The spraying distance is too far.

The viscosity of paint is too high, and the spray effect of paint is poor.

Paint temperature is too low, poor leveling.

The gun is moving too fast or too slow.

Nozzle wear, paint atomization effect is poor.

Select an inappropriate gun model.

Treatment method:

Increase the spray pressure.

Control spraying distance.

Adjust the viscosity of the paint.

Increase spraying temperature, improve leveling.

Get the gun moving speed right.

Replace the nozzle.

Select the appropriate spray gun according to the performance of the paint.

Air spraying defects and treatment methods

Particle: Cause
The spray gun moves too fast, resulting in uneven spraying.

The spray pressure is too low, the spray spray effect is poor.

The nozzle aperture is small, the pressure is too large, the spraying distance is too far, and the paint has solidified before reaching the surface.

The spraying amount is too small, and no continuous coating film is formed.

The filter system of the sprayer failed.

The surface of the substrate is covered with dust, debris and wood wool.

The used spray gun was not thoroughly cleaned, resulting in spray of paint particles.

Treatment method:

The moving speed of the spray gun should be controlled between 30 and 50cm/s.

Adjust the spray pressure.

Spray correctly according to operating procedures.

Increase the amount of spray.

Check and repair filtration system.

Before spraying, the surface of the substrate is thoroughly cleaned, dust removed and wood hair removed to purify the air.

Clean the spraying equipment thoroughly after spraying.

In a word, the types of defects, causes and treatment methods in air spraying technology have many similarities with brush painting. By mastering the causes of these defects and the corresponding treatment methods, the coating quality can be effectively improved to ensure that the appearance and performance of the coated surface meet the expected requirements.