Oxygen & Other | Electrogalvanising



Galvanising is the process by which zinc (a non-corrosive metal) is coated over corrosive metals such as steel and iron. Galvanising usually occurs by Hot-Dip Galvanising where the corrosion protection (i.e. the zinc coating thickness) is from 1mm – 4 mm thick. Not only does the zinc coating prevent corrosion of soft metals, it also adds strength in comparison to the original uncoated metal.


With the same principle as electroplating, the electrolytic process of galvanising, more commonly known as Electrogalvanising, is the process whereby a significantly thinner, tighter-bonding zinc coat is applied to the metal to be coated via electroplating. The Titanium Anode is anodically connected and a cathode is cathodically connected to a power source. An electric current is passed through a zinc electrolyte, positively charging the zinc ions which then adhere to the cathode, which is the surface that is to be coated. Electrogalvanising provides the coated metal with higher tensile strength, this is because during the Electrogalvanisation process the zinc virtually impregnates the cathode.


NMT® Electrodes Mixed Metal Oxide and Platinised Titanium Anodes are used widely in the industry of Electrogalvanising, where components are coated primarily for appliances and for use in the automotive industry. Our extensive range of anodes are available with a large portfolio of coating formulations and coating loadings. We, at NMT® Electrodes manufacture anodes that improve the plating uniformity on the coated surface and allow higher plating current densities, all this whilst still reducing energy consumption and, hence, costs.


The result of using NMT® Electrodes Mixed Metal Oxide and Platinised Titanium Anodes in the Electrogalvanising industry is high quality products with low operating costs.  


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