Because the galvanizing layer is passivated in chromic acid solution, a variety of chromate films of various colors with high chemical stability can be obtained on the surface of the galvanizing layer, and the maintenance capacity can be increased by 5 to 8 times, and the surface layer can be improved. Beautiful, add decorative effect. Spring galvanizing process characteristics are as follows:

1. A smooth coating can be obtained.

2, can be immediately plated on carbonized, oxidized steel and cast iron.

3. High current efficiency.

4, the waste is easy to dispose of, only need to apply a high ph value to precipitate zinc.

5, resulting in small hydrogen brittleness.

6. Gloss coating can be obtained at higher temperature.

7. Bath has good stability, low toxicity and low cost.