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In production and life, a large number of steel products cause huge economic losses due to corrosion every year, and with the deepening of industrial production, this kind of harm is also increasing. With the appearance of anticorrosive sacrificial anode products, this kind of problem has been solved effectively to a certain extent. However, due to the variety of sacrificial anode products in real life, and the performance and use methods of different products are also greatly different, which requires the majority of consumers to master the appropriate use methods for different products.
Taking aluminum anode as an example, if you want to understand the performance and actual action of anticorrosive aluminum anode products, and even the precautions in use, you should first consider the performance of the product itself, and for different use areas, the precautions are often different.
The pores formed by anodic oxidation of aluminum are sometimes regarded as closed capillary tubes, which are perpendicular to the surface of the base metal. After aluminum anodizing, the micropores are filled with aluminum salt formed in the process of aluminum anodizing and aluminum anodizing solution. However, the residual sulfuric acid and aluminum salts in the micropores are difficult to remove, and the water 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 prolonging the age hardening treatment time, but the tendency to adjust the grain size is not paid attention to. It is difficult to obtain uniform anodic oxide film on the surface of the material after alkali etching treatment and anodizing treatment. The temperature management of heat treatment is considered from the perspective of finishing.
If the grain size of the aluminum alloy anode installed on the large area plane is not uniform and the alkali etching treatment is not uniform, then the appearance of the aluminum alloy anode after anodizing can not be consistent, which will significantly reduce the material yield. Therefore, the same batch of materials with the same processing conditions should be selected. At this time, we can choose the methods of convection and diffusion. In the process of convection, all solutions, including the dissolved substances, move together, and 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. Therefore, the diffusion process is the only way to remove sulfuric acid and aluminum salts in the micropores.
In addition, in industry, we often use zinc as anticorrosive sacrificial anode, which is closely related to the chemical properties and economic value of zinc. In the performance of chemical properties, zinc is more active. When the ship is sailing on the sea, because the ship is mainly made of iron and steel, the corresponding chemical reaction will occur in the zinc anode in seawater, forming galvanic effect.
Shandong Linyi Bosi conductive materials Co., Ltd. is a high-tech enterprise specializing in the production of MMO flexible anode, conductive polymer flexible anode and titanium coated anode, mainly providing cathodic protection technology, engineering design, installation and technical services.
Tel: +86 17568010262£¬0539-3712117.