Rotary and laser engraving on anodized aluminum

Anodized aluminum is doped with a layer that is resistant to corrosion. The anodized layer is produced by immersing the aluminum in an acidic electrolyte bath coupled with an electric current called passivation or anodizing. The result is a thin layer of aluminum oxide that makes the metal resistant to chipping and peeling, and is food-safe, non-toxic, and rust-resistant. In addition to giving aluminum better resistance to UV light and corrosion, an anodized layer has a naturally porous surface which is particularly receptive to dyes. This is why there are many blue, black and red anodized aluminum colors.

Anodized aluminum 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 aluminum 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 aluminum 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 anodized layer
• Identification plates

Gravotech has extensive experience in anodized aluminum engraving and brings its expertise to help you find the best engraving solution that suites your needs.

We provide two technologies for marking and engraving your anodized aluminum parts and products: laser marking and mechanics marking (dot peen technology and rotary).