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Brief introduction of electrostatic powder coating process

Views: 28     Author: Alisa     Publish Time: 2018-05-26      Origin: Site


Electrostatic powder coating has been widely used since its development in 50s. It combines the advantages of various powder spraying processes to form a new powder spraying method. With direct current high pressure between the ground work and the powder coating gun, an electrostatic field will be produced. When the charged coating particles are sprayed to the workpiece, the coating is evenly deposited on the workpiece surface. The coating micro material scattered around the workpiece is still in the scope of the electrostatic field, it will be around the workpiece, so that it is sprayed. Apply to all surfaces of the workpiece.     


Therefore, it is especially suitable for spraying palisade, pipe, small steel structure parts, steel tube products, diesel engine and other parts with complex geometric shape and small surface area. It can easily and quickly powder coating to every part of the workpiece,which reduces the powder spraying over spraying and save the powder. The transfer efficiency of the coating is up to 60-85% and its atomization is very good. The film thickness is uniform and the quality of the product is improved. On the wooden furniture, the electrostatic powder coating gun can also achieve good electrostatic effect. It is especially suitable for the chairs, tea table, wood products and other parts.            

However, electrostatic powder coating has certain requirements for the viscosity and conductivity of coatings. Not all coatings are suitable for electrostatic powder spraying, and the investment of equipment is also large. The non power electrostatic powder coating gun that provides the best atomizing effect removes the high voltage electrostatic generator and the connecting cable, and it is very safe and convenient for the small turbo generator assembly, which is installed in the gun body, and is powered by the air. The air static powder coating gun can provide the most perfect surface quality. Air assisted airless electrostatic powder coating guns are widely used in aircraft, construction machinery, power machinery and other industries with high quality, high efficiency and high productivity. The electrostatic powder spraying gun not only has good surface quality, but also has great economic benefit. Although it has more investment at once, it can take back all the investment in a short period because of saving 40% of the paint and more than twice the working time.

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