How Can Cabinet-Type Centrifugal Smoke Exhaust Fans Be Protected Against Corrosion?

How Can Cabinet-Type Centrifugal Smoke Exhaust Fans Be Protected Against Corrosion?Many customers may purchase cabinet-type centrifugal smoke exhaust fans or begin operating them, but problems may gradually arise. Specifically, when these fans are used for extended periods with chemical raw materials, corrosion issues can occur. Today, How Can Corrosion in Cabinet-Type Centrifugal Exhaust Fans Be Prevented? Material selection is crucial. Since material requirements and separation needs vary, different models must be selected accordingly. Once the model and key parameters are determined, the choice of materials for structural components is primarily based on the corrosion resistance of various materials in different environments, as well as numerous factors such as their physical and chemical properties, cost, and performance. From the perspective of the material itself, it must be safe for the target application. 2. Mechanical Design of Cabinet-Type Centrifugal Exhaust Fans. Through innovative design, the service life of the equipment can be extended, ensuring its safety. In structural design, common design flaws prone to corrosion include stress concentration and gaps. Even when immersed in a metallic solution, the corrosion rate may be very low. However, the formation of cracks and changes in the chemical and electrochemical state of the internal solution can lead to severe pitting corrosion. 3. Measures to Protect the Surface of Cabinet-Type Centrifugal Smoke Exhaust Fans. One of the fundamental approaches to controlling corrosion is to isolate the corrosive environment. In the design of cabinet-type centrifugal smoke exhaust fans, surface treatment methods such as flanges, galvanizing, chrome plating, and electroless gold plating are frequently used. These methods are effective in many environments. However, in the case of rotating components, where the base material and the coating are two different materials, it is important to consider the phenomenon of differing coefficients of linear thermal expansion. When rotating components undergo elastic deformation, the disparity in deformation increases, leading to a rise in the number of microcracks. If this phenomenon occurs, it will accelerate the formation of corrosion. Therefore, special attention must be paid to the selection of surface protection methods for rotating components.