Common protection methods for metals in cooling water systems
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1. Electrochemical protection for cooling water systems: Protects metal components by polarizing them into the corrosion-free or passivated region； 2. Anti-corrosion coating method: Applying an anti-corrosion coating to the heat transfer surface of metal heat exchangers creates a continuous, firmly adhered film that isolates the metal from cooling water, thereby preventing corrosion ； 3. Increase the pH value of the circulating aqueous solution: Metals perform better at a pH of 7–8.
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