The dying process for anodised aluminium

Adding dyes during the anodising process, enables you to give the aluminium an attractive surface. All aluminium products offered by us can also be engraved subsequently using a laser.

Dyeing of anodised surfaces using organic dyes

When dyeing using organic dyes, the aluminium is dipped into a hot dye mixture after the anodising process. Subsequently, the aluminium part is flushed. When using this method, the colour molecules accumulate mainly in the top area of the pores in the anodised layer and connect with the oxide layer. The higher the content of dye in the solution, the more dye molecules will accumulate in the oxide layer.

Electrolytic dyeing of aluminium surfaces

During electrolytic dyeing, the electrolyte contains a chromophore metal salt. The dyeing process is carried out with alternating voltage, with the duration of the electrolysis depending on the required colour density.

In the course of this process, the metal ions reach deep into the pores of the oxide layer. The pores. The pores which are partly filled with metal during this process, now ensure a light-fast colouring of the aluminium surface due to reception and scattering effects.

With this method, it is possible to dye the aluminium in many different colours. Aluminium parts which were dyed this way can be used for many different applications. Amongst others, anodised aluminium parts are used in different industrial sectors, but also for everyday objects such as jewellery.