The surface treatment methods of industrial aluminum profiles generally include three treatment methods: anodizing, electrophoretic coating and powder spraying. Each method has its own advantages and occupies a considerable market share. Powder spraying has the following significant advantages:
1. The process is relatively simple, mainly due to the improvement of the automatic precision of the main equipment in the production process, and the microcomputer control of some main technical parameters can be realized, which effectively reduces the difficulty of process operation, and at the same time, the auxiliary equipment is greatly reduced;
2. The labor intensity of workers is significantly reduced. Due to the use of automated assembly line operations, the feeding method and the use of fixtures have been significantly simplified, which improves production efficiency and reduces labor intensity;

3. The rate of finished products is high. Under normal circumstances, if various measures are appropriate, the production of unqualified products can be controlled to the greatest extent;
4. The degree of pollution to water and atmosphere is reduced. Caustic soda, sulfuric acid and other liquid organic solvents are no longer used, which reduces water and air pollution and effectively improves the competitiveness of aluminum profiles and plastic steel profiles as environmentally friendly products. Reduced some production costs;
5. Compared with other surface treatment films, some physical indicators of the coating film are significantly improved, such as hardness and wear resistance, which can effectively extend the service life of aluminum profiles.
Powder spraying uses powder coatings, and electrostatic spraying is used in the process. The friction spray gun is used to make the powder particles carry a positive charge when they are sprayed out of the gun body and contact the negatively charged profile. Electrostatic adsorption, then high temperature curing. It also enhances the adsorption strength of the paint and prevents the paint film from falling off.
6. The surface quality requirements for wool have been significantly reduced, and the powder coating can completely cover the extrusion lines on the surface of the profile, conceal some of the defects on the surface of the aluminum profile, and improve the surface quality of the finished aluminum profile;