Dry Acid Salt
Dry acid salt is a dry, powder-based acidic pretreatment chemical widely used in electroplating and metal finishing lines. It replaces traditional liquid acid activation, featuring low volatility, safe handling and stable acidity. It is mainly used to remove surface oxides, light rust and alkaline film residues after degreasing, activating metal substrates before plating or chemical polishing.
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Core Formulation Composition
Main Acid Salt Compounds Blended solid acidic inorganic salts provide stable and mild acidic activity. They dissolves evenly in water to form a uniform weak-acid working solution, avoiding over-etching caused by concentrated liquid acid.
Activating Agents Special surface-active ingredients quickly break down compact oxide layers on copper, iron and alloy surfaces, thoroughly exposing pure metal crystal structure.
Wetting & Penetrating Additives Improve solution wettability on complex parts, threads and tiny gaps, ensuring no blind spots during acid activation.
Metal Buffer Inhibitors Moderate corrosion inhibitors prevent excessive metal etching, protect workpiece precision size and surface smoothness, and avoid substrate over-thinning.
