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03
2023
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11
Analysis of the Process Flow of Metal Powder Coating Line
Author：
Attractivechina
What is metal powder coating?
Metal powder coating is a commonly used coating process that is suitable for the anti-corrosion, aesthetic, and wear-resistant needs of metal surfaces. Metal powder coating has the advantages of uniform coating, environmental protection, and corrosion resistance, and is widely used in industries such as automobiles, furniture, and construction, becoming an indispensable part of modern industrial production.
Below, we will share with you the process flow of the metal powder coating line:
Surface treatment: The treatment of metal surfaces is a key step in metal powder coating. Firstly, degreasing, rust removal, and dust removal treatment are carried out on the metal surface, usually using methods such as solvent immersion or sandblasting. Then, surface pickling treatment is carried out to remove oxides and other pollutants from the metal surface. Finally, perform phosphating treatment to improve the adhesion between the metal surface and the powder coating.
Primer spraying: Primer spraying is used to improve the adhesion and corrosion resistance of the coating. Generally, primer is used for primer application. There are different types of primers, such as epoxy primer, polyester primer, etc. Choose the appropriate primer according to specific needs.
Powder spraying: Powder spraying is the process of spraying powder coatings onto metal surfaces using electrostatic action of electrodes. Spraying equipment generally includes spraying guns and electrostatic spraying equipment, which requires selecting appropriate spraying equipment according to needs. During the spraying process, appropriate powder coatings should be selected based on the characteristics of metal materials to ensure the overall spraying effect and coating quality. The thickness and quality of the coating can also be controlled by adjusting the spraying parameters of the spraying gun.
Curing: Curing is the process of heating powder coatings sprayed on metal surfaces to solidify them into a sturdy coating. After the spraying is completed, the workpiece is sent to the oven for curing. The curing temperature and time depend on the type and thickness of the powder coating. By curing, the plasticizers and solvents in the powder coating evaporate and form a continuous and sturdy film.
Surface treatment: After coating is completed, surface treatment can be carried out, such as polishing, etc., to improve the gloss and smoothness of the coating.
The above is the process flow of the metal powder coating line. For each step, strict operation and reasonable control are required to ensure coating quality and adhesion. At the same time, attention should also be paid to adjusting process parameters and maintaining equipment to improve production efficiency and coating quality.
Analysis of the Process Flow of Metal Powder Coating Line
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