Why is galvanized iron?

- Feb 12, 2020-

Iron pail manufacturers believe that galvanizing: zinc is easily soluble in acid and alkali, so it is called amphoteric metal. Zinc hardly changes in dry air. In humid air, a dense zinc zinc carbonate film is formed on the zinc surface. In the atmosphere containing sulfur dioxide, hydrogen sulfide and ocean, the corrosion resistance of zinc is poor. Especially in the high-temperature and high-humidity atmosphere containing organic acid, zinc coating is easily corroded. The standard electrode potential of zinc is -0.76V. For the steel substrate, the zinc coating is an anodic coating. It is mainly used to prevent corrosion of steel. Its protection performance has a great relationship with the thickness of the coating. After the zinc coating is passivated, dyed or coated with a light protectant, it can significantly improve its protection and decoration.

The principle of galvanizing process: In a rotating drum filled with plated parts, glass balls, zinc powder [colored business opportunities: zinc powder standard], water and agent, the glass ball as the impact medium rotates with the drum, and the plated parts Friction and hammering on the surface generate mechanical and physical energy. Under the action of chemical agents, the plated zinc powder is "cold-welded" to the surface of the plated part to form a smooth, uniform and detailed coating with a thick thickness.https://www.fhpails.com/