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Factors Affecting Cooling and Bending of Color-Coated Galvanized Steel Coils
Color-coated galvanized steel coils have been widely used in the construction industry for their corrosion resistance and thermal insulation properties. However, sometimes pre-painted galvanized steel coils will bend. The main factors affecting the cooling and bending of prepainted galvanized steel coils are as follows:
1. The high-pressure aerosol nozzle has strong directionality, and the aerosol angle is about 25°~30°, which can complete the partial cooling of the prepainted galvanized steel coil without affecting other parts of the prepainted galvanized steel coil.
2. In the air under normal conditions, the heat transfer coefficients of the aluminum hollow coil components are equal to each other, and the wall thickness or shape of the painted color-coated galvanized steel coil coils are different. The cooling rate of each part is not uniform, so that the thicker part becomes a hollow tube or the thinner part has a slower cooling rate.
3. For prepainted galvanized steel coils, the high pressure ambient air atomizes the water and increases the surface volume and contour of the water by touch, thereby destroying the steam film produced when the water and high temperature structure. Contours are touched and heat exchange efficiency is improved.
4. When using some high-pressure aerosols for cooling, because air and water have two heat transfer media, the heat transfer coefficient of water is greater than that of air, so the color-coated galvanized steel coil coil can increase the heat dissipation rate.
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