Aluminum anodizing Using aluminum anode anticorrosion precautions?

In today's production and living fields, a large number of steel products cause huge economic losses every year because of corrosion, and in the increasingly in-depth situation of industrial production, this harm is also further increasing. With the emergence of anti-corrosion sacrificial anode products, such problems have been effectively solved to a certain extent. However, because the sacrificial anode products in real life are not only diverse, but also the performance and use methods of different products are also very different, which requires the vast number of consumers to master the use methods suitable for different products. We take aluminum anode as an example, in fact, in order to understand the performance and actual effect of anti-corrosion aluminum anode products, and even the use of precautions, first of all should be considered from the performance of the product itself, and for different areas of use, the use of precautions often will be different. The small holes formed by anodizing aluminum are sometimes considered to be closed capillaries in use, and these small holes are perpendicular to the surface of the base metal. After aluminum anodizing, the pores are filled with aluminum anodizing solution and aluminum salts formed during the aluminum anodizing process. However, these residues of sulfuric acid and aluminum salts in the micropores are difficult to remove, and washing on the outer surface is difficult to remove the substances in the micropores. Because the age hardening treatment is based on the strength of the material, there is a problem of extending the age hardening treatment time, but the tendency to adjust the grain size is not paid attention to. After alkali etching treatment and anodic oxidation treatment, it is difficult to obtain a uniform anodic oxidation film. The temperature management of heat treatment is considered from the point of view of finishing. If the grain size of the aluminum alloy anode installed on a large area of the plane is not neat, the alkali etching treatment is not uniform, then the appearance of the aluminum anodizing treatment can not be consistent, which will cause a significant decline in the material yield, so choose the same batch of materials with the same processing conditions. At this time, the method of convection and diffusion can be chosen. In the process of convection, all the solution including dissolved substances move together, stirring is a way of convection; Diffusion is the gradient of chemical concentration, in the case of residual solution in the micropore, the solution in the micropore is completely impossible to stir, so the diffusion process is the only way to remove sulfuric acid and aluminum salts in the micropore.