Centrifugal fans are widely used in the chemical industry, but they face an important issue: corrosion resistance. How can effective corrosion resistance be achieved?
Innate Material Conditions Determine Performance Advantages
Different materials for centrifugal fans are affected by chemical corrosion to varying degrees. Therefore, when selecting a centrifugal fan, the model should be chosen based on material selection, first determining the model and parameters, and considering the corrosion resistance and comprehensive physical and chemical characteristics of all models. The material for strength components should be selected from the basic requirements to ensure the safety of the material itself.
Structural Design
In addition to the inherent material conditions, the structural design of the centrifugal fan should also be given high attention. A well-thought-out design can greatly improve the equipment’s service life. In structural design, attention must be paid to preventing stress concentration tendencies and gap environments, as these can accelerate the corrosion rate. Although sometimes metals have a very low corrosion probability when immersed in solutions, gaps, once formed, can easily lead to crevice corrosion.
Surface Protection Measures
Apart from the two points mentioned above, the basic protective measures for centrifugal fans are crucial. The main idea is to block the centrifugal fan from the corrosive environment. This also involves the design process. Common surface treatment methods, such as flanges, galvanizing, and chroming, are often effective chemical coatings.
Although these three points may seem unrelated to consumers and are typically areas that manufacturers need to focus on, cooperation during the purchasing and usage stages is still essential. On one hand, customers should carefully select centrifugal fan brands, as large, well-established brands will design with these three points in mind. On the other hand, proper operation and maintenance are key factors in preventing and mitigating corrosion. Users should follow guidelines carefully, as excellent corrosion resistance ultimately depends on everyone’s efforts.