Zinc plating and passivation is most commonly used in the protection coating for the auto parts. The steel base and the zinc deposit will form a galvanic cell potential difference, and corrosion-resistance can be improved after passivation, which can prolong the life span of automobile.
Zinc plating process:
Degreasing→Acid Rinsing→Zinc Plating→Passivation→Drying
Products
Items
Acid zinc plating products
HN–618 Acid zinc plating process
HN–818 Acid zinc plating process
Alkaline zinc plating products
HN-641 Low-cyanide alkaline zinc plating process
HN-741 Low-cyanide alkaline zinc plating process
HN-941 Low-cyanide alkaline zinc plating process
HN-CBR Alkaline zinc plating additive for LCD area
Cyanide-free alkaline zinc plating products
HN-NA Cyanide-free alkaline zinc plating process
HN-NH Cyanide-free alkaline zinc plating process
HN-NK Cyanide-free alkaline zinc plating process