When the spray dryer is subjected to cyclic work and operation, it is also easily corroded by the medium. Compared with the load of the spray dryer alone, the material often has special functions.
1. The corrosion of the material will decrease with the increase of the number of drying cycles due to the limited life strength. During corrosion, there is a problem of the number of load cycles. After that, the spray dryer is not easy to cause fatigue damage under the cycle of force and fatigue strength. Therefore, according to the characteristics of corrosion, we summarize the corrosion of some products. From the graph, you can see the curves of the limited life strength of some spray dryer corrosion. Therefore, when corroded, the fatigue strength of the spray dryer has its meaning only under a certain number of load cycles.
2. The corrosion of corroded active materials often occurs in metal materials that are not resistant to general chemical corrosion. In the action of the corrosive medium, the material is often severely erosively damaged, and tiny grooves appear on the surface of the material . Under the action of cyclic load, the roots of such small grooves are relatively concentrated, and plastic slippage occurs there. According to the characteristics of electrochemistry, plastic slippage will greatly increase the corrosion of this material. These will aggravate the further corrosion of the groove root, so that the effects of slippage and corrosion will alternate and accelerate the acceleration process.
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