Do you know how zinc plate is produced?

Galvanizing, is the process of applying a layer of zinc to metal objects to protect them from corrosion.

The process involves several steps:

Surface preparation: The metal object (usually made of steel or iron) to be plated is thoroughly cleaned to remove any dirt, rust, grease, or other contaminants. This step is critical to ensure good adhesion of the zinc coating.

Pickling: Immersing an object in an acid bath, usually a hydrochloric acid solution, to remove any remaining impurities and provide a clean surface for plating.

Electrocleaning (optional): In some cases, an electrocleaning step is performed after pickling. The object is placed in an alkaline solution through which an electric current is passed to remove any remaining traces of contamination and activate the surface for electroplating.

Galvanizing: The metal object is then immersed in an electroplating bath containing a zinc salt solution such as zinc chloride or zinc sulfate. The bath is maintained at a specific temperature and pH to facilitate the plating process. This object serves as the cathode, and the zinc anode is also present in the bath. When current is passed through the bath, zinc ions are reduced at the cathode (metal object) and form a layer of zinc on its surface.

Post-processing: Once the desired zinc coating thickness is achieved, the object is removed from the plating bath and rinsed thoroughly to remove any excess solution. It may also undergo additional treatments, such as chromating or passivation, to enhance the corrosion resistance and appearance of the coating.

It is important to note that the exact details and parameters of the galvanizing process may vary, depending on factors such as the size and composition of the object being plated, the thickness and characteristics of the desired galvanizing layer, and the particular requirements of the application.