Aluminum civilian brackets are widely used due to their light weight and high strength, but they face different degrees of corrosion problems in different use environments. In order to extend their service life, it is crucial to choose a cost-effective anti-corrosion treatment solution.
In indoor dry environments, aluminum brackets are generally not susceptible to severe corrosion. For this case, a more economical anti-corrosion treatment method is to perform a simple passivation treatment. By soaking the bracket in the passivation liquid, a thin and dense passivation film is formed on its surface. This film can effectively isolate the aluminum from the contact with air and water vapor and prevent the occurrence of oxidation reactions. The passivation treatment is simple to operate and has low cost. It can meet the anti-corrosion needs of aluminum brackets in indoor dry environments for a long time.
When the aluminum civilian bracket is in an indoor humid environment, such as a bathroom, kitchen, etc., a simple passivation treatment may not be enough to provide adequate protection. At this time, anodizing can be considered. Anodizing can form a thicker oxide film on the aluminum surface, which not only has good corrosion resistance, but also can obtain different colors through electrolytic coloring or dyeing processes to increase the aesthetics of the bracket. Although the cost of anodizing is slightly higher than that of passivation treatment, it can significantly extend the service life of brackets in indoor humid environments, and the cost performance is still high.
In general outdoor environments, aluminum brackets are affected by sunlight, rain, dust and other factors. In order to improve its anti-corrosion performance, powder spraying can be used. Powder spraying is to attach powdered paint to the surface of the bracket by electrostatic adsorption and other methods, and then form a solid coating after high temperature curing. Powder coating has good weather resistance, corrosion resistance and decorative properties, and can effectively resist the erosion of the aluminum bracket by the external environment. Moreover, the process of powder spraying is relatively simple and the cost is moderate. It is an ideal anti-corrosion treatment solution for aluminum civilian brackets in general outdoor environments.
For aluminum civilian brackets in harsh outdoor environments, such as the seaside and near chemical plants, more advanced anti-corrosion treatment solutions are required. The bracket can be anodized first to form a solid oxide film bottom layer, and then fluorocarbon spraying can be performed. Fluorocarbon coatings have excellent corrosion resistance, weather resistance and self-cleaning properties, and can protect aluminum brackets for a long time in harsh environments. Although the cost of fluorocarbon spraying is high, considering that it can provide long-term and effective protection for the bracket in extreme environments, it still has a certain cost-effectiveness from the perspective of the entire service life cycle of the bracket.
When the aluminum civilian bracket is in contact with the soil, such as the bracket used for outdoor gardening, the moisture, salt and microorganisms in the soil will corrode the aluminum. In this case, the anti-corrosion treatment method of hot-dip galvanizing can be used. Hot-dip galvanizing is to immerse the bracket in molten zinc liquid to form a thick zinc layer on its surface. The zinc layer can effectively prevent aluminum from contacting the corrosive medium in the soil. At the same time, the zinc layer itself also has a certain sacrificial anode protection effect. Even if the zinc layer is partially damaged, it can preferentially corrode the zinc to protect the aluminum matrix. The cost of hot-dip galvanizing is relatively high, but it is a reliable and cost-effective anti-corrosion solution for brackets in contact with the soil.
Under different use environments, the anti-corrosion treatment of aluminum civilian brackets needs to choose a suitable solution according to the specific situation. From indoor dryness to outdoor harsh environment, from simple passivation treatment to complex fluorocarbon spraying, hot-dip galvanizing, etc., each solution has its own characteristics and scope of application. By comprehensively considering factors such as the use environment, cost and service life of the bracket, a cost-effective anti-corrosion treatment solution is selected, which can reduce the use cost and improve economic benefits while ensuring the performance of the aluminum civilian bracket.
