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Zinc Plating
Zinc Nickel Plating
Zinc iron Plating
Zinc Cobalt Plating
Tin Zinc Plating
Cadmium Plating
Passivation Layers for Above
Copper Palting
Nickel Plating
Chrome Plating

Zinc Plating

Zinc plating is used generally as a sacrificial coating to steel substrates at a deposit thickness of 5 - 25 microns. If damage occurs to the zinc plating, even if the substrate is exposed, the zinc acts to prevent corrosion of the base metal. The deposit is usually protected by a supplementary layer called a passivate, which prevents the onset of white corossion.

This can also be improved by the use of top coat waxes or lacqeurs, and in the case of threaded components with torque tension additives.

There are three types of electrolyte for zinc plating based on either

Alkaline Non Cyanide
Acid Zinc

These deposits have varying characteristics, and depending on the components to be plated some of the  processess will be better suited than others, and this is an important factor in deciding the process.

Automated rack and barrel plating facilities for zinc finishing of steel and cast iron. The plating of Cast iron is a specialty of ours in that we understand the different pre-treatments that may be required. 

The following are typical  Zinc plating requirements:
Bright/Clear/Blue Passivates (Chrome VI free Normal ELV & RoHS Compiant)
Thick Film Yellow- (Chrome VI free ELV & RoHS Compiant)
Yellow Passivate (Chrome VI not ELV or RoHS compliant)
Black Passivates (Normally on zinc Chrome VI containing zinc alloys offer alterantives)
Olive Drab Passivates  (Chrome VI not ELV or RoHS compliant)
Yellow + leach back  (Chrome VI not ELV or RoHS compliant)