Let us strengthen your aluminium extrusions and protect them from corrosion with our aluminium anodising service. Attractive and hard-wearing protective coating in a wide range of colours and finishes.
What is aluminium anodising?
Unlike iron or steel, aluminium isn’t susceptible to rust. Instead, it oxidises, forming a thin layer of aluminium oxide on its surface when it comes into contact with oxygen.
This dense layer of corrosion actually helps to protect the metal beneath. Hard anodising works by thickening the oxide layer, offering increased corrosion protection, and preserving the quality of the metal beneath.
Aluminium anodising involves passing an electric current through the aluminium before lowering it into an acid bath, where it becomes the anode in the electrical circuit. The electric current causes oxygen to be released at the anode, which reacts with the aluminium to form an oxide layer. The thickness of the layer is determined by the time the aluminium spends in the tank.
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