ZNP-54 phosphating 1. Phosphating Process The process involves immersing or spraying metal parts with a phosphoric acid-based solution, which reacts with the surface to create a thin, insoluble phosphate layer. Basic Steps: 1. Degreasing & Cleaning – Removes oil, dirt, and contaminants using alkaline cleaners or solvents. 2. Rinsing – Prevents contamination before treatment. 3. Pickling (Optional) – Uses acid (like hydrochloric acid) to remove rust and scale. 4. Phosphating – Metal is immersed in a phosphate solution to form a protective layer. 5. Rinsing – Removes excess chemicals. 6. Sealing & Passivation (Optional) – Enhances corrosion resistance using chromates, silicates, or organic topcoats. 7. Drying – Ensures a stable and uniform coating. # ZNP-54 phosphating Manufacturer.