Anodizing
Technical information
- standard profile length for anodizing: up to 7.650 m
- maximum profile length for anodizing (C0 colour): up to 21.850 m
- standard suspension marks: up to 50 mm on each side of profile
- possibility of mark-free anodizing of elements
Anodizing service
It can be preceded by pre-treatment using the following methods:- brushing
- shot blasting
- mechanical polishing
Standard colours
- C-0 silver (natural aluminium colour)
- C-23 gold
- C-32 champagne
- C-33 olive
- C-34 brown
- C-35 black
- C-31 stainless steel
| Designation | Pre-treatment | Main treatment |
|---|---|---|
| E-0 | not satin finish | anodised and fixed |
| E-6 | satin finish | anodised and fixed |
Anodic coating thicknesses depending on conditions of use
| Service conditions | Minimum thickness of sealed coating |
|---|---|
| W – extremely heavy | 25 µm |
| C – heavy | 20 µm |
| U - moderate | 15 µm |
| L - light (technical anode) | 10 µm |
| B - very light (only as a protective measure) | 5 µm |
ANODIZING
What is aluminium anodizing?
Anodizing is an electrochemical process that creates a protective oxide layer on the surface of a metal, especially aluminium. This process significantly increases the corrosion resistance, hardness and durability of the metal surfaces while also providing an aesthetic finish. Anodizing is widely used in many industries such as automotive, aerospace, electronics and construction.
Anodizing aluminium profiles – what does the process look like?
The aluminium anodizing process begins with thorough cleaning and degreasing of the metal surface to remove contaminants. The aluminium is then immersed in an electrolytic bath, usually containing sulfuric acid, and exposed to an electric current. As a result, aluminium acts as the anode, which leads to the formation of an aluminium oxide layer on its surface. The process can be adapted to different anodizing types, such as type I with chromic acid, type II with sulfuric acid and type III, known as hard anodizing.
Why choose it? Properties of anodized aluminium
Anodized aluminium has many beneficial properties that make it highly attractive in various applications. First of all, anodizing increases corrosion resistance, so aluminium elements can be used in difficult environmental conditions. In addition, the aluminium oxide layer is very hard and abrasion-resistant, which ensures a longer product life. Anodizing allows for the colouring of aluminium, enabling a wide range of colours to be achieved and adding aesthetic value. In addition, the anodized surface is easy to keep clean and resistant to UV radiation, which means colours do not fade in sunlight.
Where is aluminium anodizing used?
Anodized aluminium is widely used in many industries. In the automotive sector it is used both for the production of mechanical parts, such as pistons or valves, and decorative elements. In the aerospace industry it is used to produce lightweight yet durable structural parts. In electronics, thanks to the insulating oxide layer, anodized aluminium is used in housings and components. In construction and interior finishing, anodized aluminium profiles and strips are valued for durability and attractive appearance. Moreover, due to high resistance to corrosion and abrasion, anodized aluminium is often used in the tourism and medical equipment sectors.