How to choose the atomization method for the paint spray gun?

Wall, furniture, and car paint are very common in daily life. They all have a common feature that the paint on the wall and furniture surface will fall off after a long time, and the car will encounter the phenomenon of paint body friction while driving. So we need to touch up the paint. The tool needed for touch up is the paint spray gun. What are the atomization methods of the paint spray gun?

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Centec spraying reminds that the following factors should be taken into consideration when choosing the spraying method for paint spray guns:

(1) Type of paint

The type of paint used determines the pattern of atomization and the method of atomization that should be used. Some coatings are more suitable for external mixing, while others are more suitable for internal mixing.

(2) Air consumption during atomization

The air consumption of the selected air nozzle should be lower than the air supply of the air compressor. Only in this way can the compressed air be fully supplied when the paint spray gun is atomized, otherwise the air supply cannot be satisfied. Practical experience shows that for electric air compressors, every 1hp (745.7w) increase in power can generate 4ft3 (0.113m3) of compressed air with a pressure of 10001b/in2 (689.476kpa). The greater the air consumption of the air cap, the greater the spraying ability of the paint and the faster the covering of the workpiece. The air consumption of various pneumatic equipment when the air pressure is 100psi (689476pa).

(3) The air cap and the paint nozzle must be used together

Because not all air caps can be used with any paint nozzle, you should choose a nozzle that can be used together. The user can learn the correct nozzle collocation from the information provided by the equipment supplier. Each manufacturer of spraying equipment generally produces a variety of special paint nozzles, and introduces the special air caps that can be matched with them in the data.

(4) Atomizing air pressure

Refers to the air pressure used in the atomizing spray gun. When the pneumatic pressure of the atomizing paint spray gun increases, the required air consumption will also increase. Generally, the data provided by the air tool manufacturer will indicate the air consumption when the atomization pressure is 207kpa, 345kpa and 483kpa. Since the higher the atomization air pressure, the larger the air consumption, and the larger the amount of paint to be atomized, so the air consumption of the air cap should be matched with the air production of the air compressor. For the air cap with small air consumption (air consumption), a small air compressor can be used. For the nozzle with large air consumption with multiple nozzle holes, a high-power air compressor should be used.