Zinc Plating

Zinc plating is used for all types of small and large metal parts, that will be exposed in interior or mildly corrosive conditions. We offer Clear (Silver), Yellow and Black Passivate finishes.

What is Zinc Plating?

Zinc plating is identical to electro-galvanizing in principle because both are electro-deposition processes. However, zinc plating is used on small parts such as fasteners, crank handles, springs and other hardware items rather than sheet metal. The zinc is applied as an expendable electrode in a cyanide, alkaline non-cyanide, or acid chloride salt solution. Cyanide baths are the most operationally efficient but can potentially create pollution and are hazardous.

After alkaline or electrolytic cleaning, pickling to remove surface oxides, and rinsing, the parts are loaded into a barrel, rack, or drum and immersed in the plating solution. Various brightening agents may be added to the solution to add luster, but careful control is needed to ensure a quality product. Post-plating treatments may be used to passivate the zinc surface as well as impart various translucent colors or to extend the life of the coating.

Our Tank Sizes

Our large tank sizes allow for high efficiencies for small to medium sized parts, while allowing us to offer zinc plating for much larger parts as well. We also provide high quality Barrel Plating for smaller components.

Maximum part dimensions for Zinc Plating:  10.5 feet Long  x  18″ Wide  x  36″ Deep.

Zinc Plating Process Flow

Typical Zinc Plated Products