Galvanized steel drum material: Zinc is easily soluble in acid and alkali, so it is called amphoteric metal. Galvanized steel drums hardly change in dry air. In humid air, a dense basic zinc carbonate film will form on the surface of galvanized steel drums. In the atmosphere containing sulfur dioxide, hydrogen sulfide and marine, the corrosion resistance is poor, especially in the atmosphere containing organic acid at high temperature and high humidity, the zinc coating of galvanized steel drum is easily corroded. After the zinc coating of galvanized steel drums is passivated, dyed or coated with a light protectant, its protective and decorative properties can be significantly improved. This material is rarely used on tinplate cans! Not to mention on 1L steel drums and 5L steel drums! However, 18L galvanized steel drums are a special thing, because they are more solvent and cannot be used as 20L steel drums. Lubricating oil packaging steel drum. The process principle of galvanizing: in a barrel with plating pieces, glass balls, zinc powder, water and a rotating drum, the glass ball as an impact medium rotates with the drum, rubbing against the surface of the plating piece and hammering to 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 meticulous coating with a thickness.
Galvanized steel drum material and process principle
May 29, 2022
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