Electrocoloring Process for Anodized Aluminium & Alloys

Liquid system and Color range is from champagne clear to a dark bronze and deep black.  The system is ready-mix stabilized and balanced solution containing stannous sulphate and a stabilizer component for the replenishment of the electrolyte.  This provides very good color penetration and color stability and minimizes the potential problems of smut build up when processing darker colors that can affect seal quality.

The colors obtained with this system are lightfast and do not fade even under the strongest UV climates.
In architectural applications, even after many years, the ability to clean ALUMAL COLOR 890/891 surfaces is possible without degrading the color.

Features & Benefits

  • System stability prevents oxidation of divalent tin so long life process
  • Improved throwing power of electro coloring bath for difficult profiles / components
  • Very high color stability and less re-work
  • For darker colors (dark bronze, bronze) possibility to operate as one component (low stabilizer consumption)
  • Low sludge tendency even by using DC pre-treatment

This process belongs toElectro-Coloring 800 Series

In many markets and for a multitude of applications where aluminum and alloys are utilized including the architectural, automotive, aircraft/aerospace industries, colors of many types of parts and surfaces provide an important visual or aesthetic appeal.

Electro-Colouing 800 Series – Provides a very stable, long lasting color option to anodized aluminum layers for very demanding applications.  The process is an electrolytic process post anodizing that deposits metals into the pores of the anodize surface.  The resulting color is dependent on the type and amount of metal deposited.  Nickel based chemistries produce stainless steel shades to lighter bronze colous. Tin based systems are designed for darker ranges of color applications and copper based provide light pink to red colous.  COVENTYA offers several ALUMAL Color options including the following.

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