1. Input and Strip Joining Process

The entry section of the electro galvanizing line is equipped with advanced production units, including a pay-off reel, shear machine, welding machine, looper, and tension leveler. Steel coils, including cold-rolled materials, are continuously fed into the line, accurately cut, and joined through automatic welding to ensure stable and uninterrupted production.

2. Pre-Treatment Process

Before electro galvanizing, steel sheets undergo a comprehensive electrolytic cleaning process consisting of electrolytic cleaning tanks, acid pickling sections, and rinsing systems. This process effectively removes surface contaminants, residual oils, and oxide films, creating a clean and activated surface to ensure excellent coating adhesion and uniform plating quality.

3. Electro Galvanizing Process

SHOUYUAN applies advanced electro galvanizing technologies, including the CAROSEL plating method, in which zinc coating is deposited onto the steel surface through controlled electrochemical reactions using conductor rolls. This process enables the production of single-sided, double-sided, and differential-coated steel sheets with precise coating control.

In addition, horizontal electro galvanizing technology allows simultaneous plating on both sides of the steel sheet, ensuring uniform coating distribution and meeting diverse customer requirements.

4. Phosphate Thin-Film Coating

A phosphate conversion coating is applied to the zinc surface through chemical or electrochemical treatment. This thin protective film provides temporary corrosion protection while improving paint adhesion and creating an ideal surface for subsequent coating and painting processes.

5. Anti-Fingerprint Treatment

To further enhance surface performance, an organic, inorganic, or organic-inorganic hybrid coating is applied to the galvanized steel surface. This treatment improves corrosion resistance, fingerprint resistance, surface appearance, and processing performance, making the products suitable for applications requiring high-quality surface finishes.

6. Output and Packaging Process

At the exit section of the production line, finished galvanized coils pass through an output looper, tension reel, and automated packaging system. These processes ensure stable coil formation, product protection, and safe handling before delivery to customers.