Anodising
Anodising
Anodising is a process for producing a protective and decorative film of aluminium oxide on aluminium and its alloys. The structure of the film formed is porous which enables it to absorb colours and electrolytic colouring produces a number of attractive shades. These colours are fast to light and weathering. Anodizing is the conversion of the parent metal.
Major portion of aluminium profiles are received in a mill finished state from extruders, and anodising them produces a good attractive finish. And sometimes, in order to provide a special aesthetic appeal to the metal, the profiles are given a special mechanical or chemical treatment prior to the anodizing process with a PLC controlled system. Our quality systems ensure that the finish given in anodising is of consistent thickness and colour.
The standard finishing on aluminium by anodising are:
- Natural Anodising
- Chemical polishing
- Electro-chemical matt finish
- Electro-chemical brightening
Specification
- Type of Coating - Inorganic
- Chemistry - Anodic
- Colour Range - Limited
- Pigment - Anodic (Limited Stability)
- Colour Stability - Limited
- Colour Variation - Wide
- Salt Spray Resistance - 1000 hrs.
-
South Florida Weathering 45° Exposure - 5 years
- Fading - Fades Visibly
- Chalking - Chalks Visibly
- Gloss Retention - Uniform Gloss Loss
- Film Erosion Resistance - Uniform
- Chemical Resistance - Good
- Hardness - 2H to 4H
- Flexibility - Poor
- Repairability - Scratches cannot be repaired
- Die marks / Lines - Visible
- Life Span - 25 to 30 years
- Warranty - 5 years
- International Standards - AAMA 611 BS 3987