Four measures to prevent centrifuge corrosion

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This post was last written by li* Edited by njixpf on 2010-5-18 22:13 The most troublesome thing about centrifuges used in industry is the corrosion problem encountered when the centrifuge is used in chemical raw materials for a long time. Now I recommend four measures to prevent or slow down the corrosion of centrifuge. First, it is very important to choose the centrifuge made of the right material because different materials and separation requirements require different models. After the machine model and main parameters are determined, the strength part materials are determined from the fundamentals based on the corrosion resistance of different materials in different environments, their physical and chemical characteristics, cost performance and many other factors. From the perspective of the material itself, the target material it targets is safe. Second, the mechanical design of the centrifuge. An excellent design can extend the service life of the equipment and ensure the safety of the equipment. For structural design, the design defects that are most likely to accelerate corrosion are stress concentration tendencies and crevice environments. Sometimes, even if the metal is immersed in the solution, the corrosion rate is small. ； However, the formation of gaps will cause serious crevice corrosion due to changes in the chemical and electrochemical state of the internal solution. Third, centrifuge surface protection measures A basic idea to control corrosion is to isolate the corrosive environment. In the design of centrifuges, surface treatment methods are often used, such as blue, zinc plating, chromium plating, chemical plating, etc. These methods are effective in many environments, but for rotating parts, one important phenomenon must be paid attention to: The base material and the coating are two materials with different linear expansion coefficients, which will produce different amounts of deformation when the rotating parts are elastically deformed, resulting in a large number of micro-cracks. ； If the aforementioned phenomena exist, corrosion formation will be accelerated. Therefore, surface protection methods for rotating parts should be adopted with caution. Fourth, the use of corrosion inhibitor centrifuges itself involves multiple disciplines. To use a centrifuge well, in addition to the above-mentioned measures, attention should also be paid to studying its application environment. The application of corrosion inhibitors is also widely used in practical applications. For some harsh environments, the use of appropriate corrosion inhibitors can make parts suitable for use. As long as the process permits, the use of corrosion inhibitors should be an effective way to apply centrifuges. The above four points can give the centrifuge a good protection and make it more corrosion-resistant, making the centrifuge last longer and safer. Related articles: Possible corrosion phenomena in centrifuges