Info on anodisation
About anodisation
Anodisation can be compared with the formation of corrosion on iron. Just as iron protects itself by forming corrosion, aluminium protects itself by oxidising.
If raw aluminium is placed outside, air and oxygen will combine with the aluminium and form a thin coating of aluminium oxide of approximately 0.2 my. The natural oxidisation that occurs in unprotected and uncontrolled environments will turn the aluminium grey-black and will give it a tired appearance.
Anodisation at A/S HAI Horsens
The method is an imitation of the natural protection process of the aluminium, but in the HAI process oxidation occurs quickly, in clean surroundings and is fully controlled. This process is called anodisation.
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The process means that the protected surface becomes more fast to light, thicker and stronger. The protective layer is approximately 100 times thicker and therefore more durable compared with the natural process. At the same time it is corrosion resistant, dirt-repelling and electrically insulated.
Structure and colour
When anodisation is performed the impression of metal is retained and the surface is given a beautiful lustre with a depth of colour. Since the anodisation layer is transparent, it is possible to give the surface structure or colour, which will make the surface interesting to look at.
At HAI we are able to control colouring very accurately during the process. This ensures a uniform appearance every time and provides design opportunities.
Different names
Anodisation has many names in Denmark and abroad. E.g.
- Aluksering, Anodizing, Anodising
- Eloksering, Eloxering
- Eloxal, Eloxieren