When the blade dryer used for a long time, the blade dryer will appear corrosion phenomenon, then, what is the reason for this phenomenon?
A, the corrosion of the biaxial blade dryer is mainly due to the production material of the biaxial blade dryer is metal, and the chemical activity of the metal is relatively high, when the metal is exposed to the wet air for a long time, the oxidation reaction of the metal will occur, and then the corrosion will occur. The production of metal materials of biaxial blade driers is different, and the ease of their oxidation reaction is different.
B, the more pure metal made of the biaxial blade dryer is not easy to be corroded, when the more impurities in the metal, the more easily the biaxial blade dryer is corroded.
C, when the shape of the internal parts of the biaxial blade dryer is more complex and the surface is more rough, then its corrosion resistance is worse. When the corrosion of the internal parts occurs, it will soon cause the corrosion of the metal in contact with the parts, and the corrosion speed is very fast.
D, when the working environment of the biaxial blade dryer is high temperature, high humidity, or more oxygen and chloride ions in the environment, it is easy to react with the biaxial blade dryer, accelerate the corrosion degree of the biaxial blade dryer.
The paddle shaft, paddle blade and groove in the sludge dryer of Mitsubishi Heavy Industry of Japan successfully are coated with wear-resistant, corrosion-resistant and high-temperature tungsten carbide coating by supersonic spraying. After continuous use and tracking by customers, the service life of the components has been greatly improved.
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