Learn about metal surface treatment

2025-10-26View Original

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Typically, metal surfaces are covered with dust, oil stains, oxide scales, rust layers, contaminants, salts, or loose old paint. Among them, the scale is a relatively common but easily overlooked component. Scale is a dense oxide layer that forms during the high-temperature forging of steel; it usually adheres firmly, but it is more brittle than the steel itself. Moreover, acting as a cathode, it accelerates metal corrosion. If these substances are not removed before painting, it will inevitably affect the adhesion and corrosion resistance of the entire coating. According to statistics, over 70% of painting problems are caused by improper surface treatment. Therefore, for the performance of a metal anti-corrosion coating system, proper surface treatment is crucial.

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Learn about metal surface treatment

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