Electrolytic oxidation - Eloxal process - Anodisation
During the surface refinement, we work closely with companies that have the expertise and understand problematic that our products may present. The text below was written in cooperation with our expert suppliers.
Electrolytic oxidation (anodising) of aluminium, DIN 17611.
This is an electro-chemical process during which an aluminium oxide is created on the aluminium surface This oxide layer is grown down into the surface and out from the surface. After sealing (the pores are closed), the coating is very dense, hard and resistant to the effects of the weather.
Colour may be applied to the coatings. The following colours are available:
Colours according to the German Eloxal Association
Colours based on EURAS standard
|C-31||light bronze |
|C-33||medium bronze |
Additional colours are available for larger quantities, starting at 500 m2 e.g., royal blue, sapphire blue and green. More colours upon request.
Moreover, prior to proceeding with the anodisation, the material must be pre-treated. This is categorised as follows:
without considerable surface removal
ground and brushed *
ground and polished *
chemically treated in a special pickle
When using a pre-treatment identified with * a maximum size of 1000 x 2000 mm must be taken into consideration.
For perforated and embossed sheet metal plates the combination E6/EV1 is often preferred.
During this process, the perforated and embossed sheet metal plates are chemically pre-treated and receive a natural aluminium lustre.
We recommend the use of the material Almg1, anodising quality.