Rotary and laser engraving on anodised aluminium

Anodised aluminium is aluminium doped with a layer that is resistant to corrosion. The anodised layer is produced by immersing the aluminium in an acidic electrolyte bath coupled with an electric current called passivation or anodising. The result is a thin layer of aluminium oxide that makes the metal resistant to chipping or peeling, food-safe, non-toxic and rust-resistant. In addition to giving aluminium better resistance to UV light and corrosion, an anodised layer has a naturally porous surface which is particularly receptive to dyes. This is why there are many blue, black and red anodised aluminium colours. Anodised aluminium is one of the easiest metals to mark and is widely used in various industrial sectors such as aeronautics or automotive, but it can also be found in the electrical components of most household appliances and electrical systems.

There is also a new trend of personalizing items thanks to anodized aluminium engraving to make items more unique, give a message, express a feeling or simply make them prettier, such as thermos and bottles, knife handle, pet tags, telephone cases, computer and tablet casing and more. Anodized aluminium naturally gives a very high contrast when lazed, with no need to add a chemical additive afterwards, which is very interesting for these applications. Main sectors:

• Promotional items and gifts.
• Automotive & Aeronautics.
• Electronics.
• Tools.
• Treatment of metal sheets for the removal of the anodised layer.
• Identification plates.

Gravotech has extensive experience in anodised aluminium engraving and brings its expertise to help you find the best engraving solution adapted to your needs. We provide two technologies for marking and engraving your anodised aluminium parts and products :

• Laser marking.
• Mechanics marking (dot peen technology and rotary).