Anodising, also known as anodising or anodic oxidation, is a widely used process for the surface treatment of aluminium.
The anodising process is primarily used to influence the surface properties of aluminium. The main aim is to increase the resistance and durability of aluminium. An additional positive effect is an upgraded appearance and the possibility of painting the material in a wide variety of colours.
How does the anodising process work?
- Pre-treatment: Before the actual anodising, the aluminium profile is pre-treated with mechanical or chemical processes and carefully cleaned.
- Anodic oxidation/anodising: An electrochemical process is then used to form a natural oxidation layer of 5 to 25 microns on the aluminium profile. In this process, the aluminium is immersed in an acid bath and subjected to an electric current. The special feature of the anodising process is that, unlike other manufacturing processes, no layer is applied or removed from the workpiece, but the natural oxidation layer is built upon the aluminium.
- Finishing: In the final step of the anodising process, the surface of the aluminium is usually sealed using hot water or steam.
- (Optional) Colouring: If a specific colouring is desired, the still porous oxidation layer is electrolytically coloured or lacquered.
What are the advantages of anodising aluminium?
In addition to improved durability and longevity of the aluminium and a refined appearance, anodic oxidation brings numerous other benefits, including:
- Low maintenance
- No electrical conductivity
- Hard and scratch-resistant surface
- Corrosion and weather resistant
- No chipping of the paint
Why do we use anodised aluminium for our luminaires?
The aim is to offer our customers visually appealing and, above all, high-quality luminaires with long service life. However, LED modules with lifetimes of over 50,000 hours alone are not enough if they are not sufficiently protected by the luminaire housing and fail prematurely. That is why we mainly use anodised aluminium for the housing of our luminaires. Especially when handling pointed or sharp objects, the hardened and scratch-resistant surface of the luminaire housing reliably protects the LED modules from damage. In addition, the improved surface protection and the low maintenance effort help to ensure the longevity of our luminaires.