Which of the three methods of surface treatment of aluminum profiles is better?

by:Zeyi     2021-10-11
The surface treatment methods of aluminum profiles include anodizing, electrophoretic coating and powder spraying. Each method has its own advantages and occupies a considerable market share. Powder spraying has the following advantages: 1. The process is relatively simple, mainly due to the improvement of the automation precision of the main equipment in the production process. Part of the main technical parameters can be controlled by a microcomputer, which can effectively reduce the difficulty of process operation and greatly reduce auxiliary equipment; 2. High yield. Generally speaking, if the measures are taken properly, the product quality can be improved. 3. The energy consumption is significantly reduced. In the production process of ordinary anodic oxidation and electrophoresis coating, the consumption of water and electricity is quite large, especially in the oxidation process. The output current of the rectifier can reach 8000~11000A, and the voltage is between 15~17.5V. In addition to the heat consumption of the machine itself, it also needs to be continuously cooled with circulating water. The power consumption per ton is often about 1000 degrees. At the same time, reducing auxiliary facilities can also reduce some power consumption. 4. The pollution to water and atmosphere is reduced, and liquid organic solvents such as flake alkali and sulfuric acid are no longer used, which can reduce water and atmosphere pollution, effectively improve the competitiveness of aluminum and plastic steel profiles as environmentally friendly products, and reduce some production accordingly cost. 5. The labor intensity of workers is greatly reduced. Due to the automatic assembly line operation, the feeding method and the use of tooling fixtures are greatly simplified, production efficiency is improved, and labor intensity is reduced. 6. The surface quality standard of raw materials is significantly reduced. The powder coating can completely cover the extrusion line on the surface of the profile and cover the surface Some defects can improve the surface quality of finished aluminum profiles. Compared with other surface treatment films, the hardness, wear resistance and other physical indicators of the coating have been significantly improved, which can effectively extend the service life of aluminum profiles. 7. Powder coating adopts powder coating, and the process adopts electrostatic spraying. Under the action of accelerating wind, the powder particles carry a positive charge when ejected from the gun body by the action of the friction gun, contact with the negatively charged contour to generate electrostatic adsorption, and then solidify at high temperature. It also improves the adsorption strength of the coating and prevents the film from falling off. From the perspective of the process itself, it has a high technological content. Mixing paints of different colors can produce different decorative effects, which is more in line with the needs of interior decoration. This is also in line with the trend that aluminum profiles are used in the construction industry to develop indoors. In particular, the combined use of sprayed profiles and thermal insulation bridges makes powder sprayed profiles more fashionable and has a larger development space that cannot be replaced by profiles produced by other processing methods.
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