Anodizing, an electro-chemical conversion process, transforms the surface of aluminum into durable aluminum oxide through reactions at the anode in an acidic solution.
Following cleaning and etching, aluminum profiles undergo immersion in a sulfuric acid solution under precise parameters. An electric current triggers the formation of a robust aluminum oxide film, renowned for its hardness and corrosion resistance.
Profiles are then electro or dye-colored to achieve aesthetic finishes like light, medium, and dark bronze, silver, gold, and more.
Sealing, the final step, occurs in a hot water solution to enhance the durability of the finishing by closing the porous aluminum oxide layer.
With a capacity of 18,000 – 16,000 tons per year, Emirates Extrusion offers a comprehensive range of anodizing finishes, including natural silver, gold, light, medium, and dark bronze, and black in matte or shiny finishes. Our anodizing process and products adhere to international quality standards such as European EN, British BS, ISO, and Qualanod.
Aluminium alloys and tempers
Emirates Extrusion produces most of customer requirements in its facilities using alloys 6061 and 6063 with T4, T5 and T6 tempers.
6061 is a precipitation hardeningg aluminum alloy, containing magnesium and silicon as its major alloying elements. It has good mechanical properties and exhibits good weldability. It is one of the most common alloys of aluminum for general purpose use.
6063 is an aluminum alloy, with magnesium and silicon as the alloying elements. It has generally good mechanical properties and is heat treatable and weldable. 6063 is mostly used in extruded shapes for architecture, particularly window frames, door frames, and roofs. It is typically produced with very smooth surfaces fit for anodizing.
- T4: Solution heat treated and naturally aged to substantially stable condition
- T5: Cooled from an elevated temperature and then artificially age hardened
- T6: Solution heat treated and artificially age hardened
