Aluminum electrophoretic coating has the advantages and needs to pay attention to what are the problems?
The traditional surface treatment process for aluminum profiles is oxidation, coloration, and sealing. The aluminum conversion film is prone to corrosion and has poor durability when used outdoors for extended periods of time, especially in acid rain or marine environments. , People try to use paint coating method to improve the decorative aluminum building materials and the service life, at present, has been successfully used in industrial electrophoretic paint, powder coating and fluorocarbon spray. Since the electrophoretic coating is a water-based coating, the aluminum material can be directly electrophoresed after being washed by the pretreatment. The electrophoretic coating has a high transparency, and has both a high decorative effect and can highlight the metallic luster of the aluminum profile itself. Therefore, there are more and more aluminum profiles. Use electrophoretic equipment for painting.
Electrophoretic coating method applies to a large number of assembly line production process. Shenzhen aluminum profiles in the electrophoresis bath refresh cycle should be within 3 months. Taking an electrophoresis production line with an annual output of 300,000 steel coils as an example, the scientific management of the bath fluid is extremely important. The various parameters of the bath fluid are regularly tested, and the bath fluid is adjusted and replaced according to the test results. The parameters of the bath solution are generally measured at the following frequencies: the electrophoretic, ultrafiltrate and ultrafiltration cleaning solutions, the yin (positive) polar solution, the recirculating lotion, the pH of the deionized cleaning solution, the solids content and the conductivity once a day; Base ratio, organic solvent content, laboratory tank test twice a week. The management of the quality of the paint film by aluminum profile processing manufacturers should always check the uniformity and film thickness of the paint film. The appearance should not be pinholes, sagging, orange peel, wrinkles, etc., and regularly check the film adhesion, corrosion resistance Physical and chemical indicators such as performance. Inspection cycle according to the manufacturer's inspection standards, generally every batch needs testing. Sound-insulating energy-saving door and window technology The advantages of aluminum windows are light weight, high strength, and resistance to wear. It is easy to form a variety of complex shapes of aluminum window parts by extrusion. Aluminum profiles can be plated or coated with other surfaces to make aluminum products more durable and reduce maintenance costs.
Electrophoretic coating paint has a high utilization rate. Due to the low viscosity, the workpiece is brought out less http://www.aps.com.cn/gyaps.html, and the electrophoresis workpiece can be washed with water, and the utilization of the recovery device makes the electrophoretic coating paint utilization rate of more than 95%. Safety and environmental protection. Because the electrophoretic coating is diluted with water, the solid content is low, and the solvent content is low, it is an environmentally friendly coating, and the risk of fire is eliminated, and the health of workers is also guaranteed. Film quality is good. Acrylic resin is cured with amino resin to ensure the high decoration and high corrosion resistance of the coating film. At the same time, because the resin is highly transparent, it effectively highlights the metal texture of the aluminum profile, and can also be decorated with matt, sand, pearl, etc. as required. effect. Compared with the conventional electrolytic coloring and sealing process, it has the advantages of time saving and labor saving, no sealing of the electrophoretic coating film, and the aluminum profile avoids cracks and the like caused by bad sealing. The thickness of the coating can be freely controlled, and both the 7μm and 12μm are normally controlled at home and abroad.
