Oct 17, 2015 Off Comments in Powder Coating by

Woodform Architectural evaluates the most suitable coating systems for aluminium profiles by examining their advantages and disadvantages.

Aluminium is one of Earth’s most abundant metals known for its lightness, strength and resistance to corrosion. Untreated aluminium extrusions are perfectly adequate for many applications; however, there are many valid reasons to treat the surface of aluminium profiles. These include introducing colour, supplementing corrosion resistance; augmenting hardness; arresting wear-and-tear; and adding reflectivity.

Two coating systems – anodised and powder coating – are currently preferred when specifying architectural aluminium.

Nearly a century old, anodising is a relatively straightforward electrochemical process used to increase the thickness of the natural oxide layer on the surface of aluminium.

Powder coating, on the other hand, is a technique mainly used to apply decorative and protective finishes to aluminium profiles through a process that electrostatically charges the powder consisting of a mixture of finely milled resin and pigment, spraying it on to the aluminium extrusion, and then fusing it into a smooth coating in a curing oven.

Read more: Cleveland Ohio Powder Coating: Anodising Vs powder coating: Which is better for aluminium surface treatments?