Air vents and periodical cleaning

In order to discharge corrosive gas, air vents of 0.02 to 0.005 mm in thickness are provided in the area where gas is driven in. The air vents should be periodically cleaned to keep them free of clogging. To do so, immerse the metallic part in a strong alkaline solution at high temperature to break the contaminated layer on the surface. Let the broken pieces adsorbed to hydrogen generated by electrolysis and then use ultrasonic vibrations to separate them from the surface. This allows for completely eliminating contamination from the air vents.
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