Electrolytic process that forms an oxide of a specific thickness on the aluminum alloy, which gives the aluminum not only the natural color of aluminum, but also a range of colors achieved by electrolytic colouring, which ranges from champagne to black, passing through the bronze colours.
This is an electrolytic process which forms an oxide coating of a determined thickness over the aluminium alloy. In products with a decorated surface of the aluminium profiles, two sub-treatments are commonly used:
- Polished (resulting from a mechanical treatment);
- Brushed (resulting from a chemical treatment).
This process not only gives the profiles the natural colour of the aluminium, but also a spectrum of colours achieved through electrolytic colouring, which ranges from champagne to black, passing through the bronze colours.
For aluminium profiles for architecture, the conditions for the realisation and quality of this treatment are based on directives and standards which the products should respect. To this effect the entity, Qualanod, exists in Europe to manage the equally named quality branding and certify manufacturers (with the participation of national inspection entities – in the case of Portugal, LNEC) so that they may present their brand for quality recognition.
| APPLICATION |
SEVERETY OF THE ENVIRONMENT |
CLASS (µm) |
| INTERIOR |
LOW |
10 |
| EXTERIOR |
AVERAGE |
15 |
| |
HIGH |
25 |
| |
VERY HIGH |
25 |