Zinc Electroplating


Zinc Electroplating provides corrosion resistance to the steel component by acting as a barrier and a sacrificial coating. Zinc is more electrochemically reactive than steel, so when exposed to a corrosive environment, the zinc plating corrodes sacrificially, delaying rust formation on the steel component even after portions of bare steel are exposed.
Zinc electroplating is a method of depositing zinc metal on the surface of another metal, such as steel, by immersing the steel component
in an appropriate plating bath and applying electrical current. Zinc travels through the electrolytic bath from the zinc anodes and attaches to the surface of the steel component. The thickness of zinc plating depends on the time spent in the plating bath, the amount of current, and the chemical composition of the bath.
The performance of the zinc coating is determine from the required electroplating standard or specification that is nominated by the end user. The perfomance requirement differs greatly from industry to industry. The standard or specification detail  information such as  zinc thickness, chromate coatings, salt spray performance and other quality requirements.