Continuous electrolyte colouring of a pre-anodised aluminium...

Details Continuous electrolyte colouring of a pre-anodised aluminium... Continuous electrolyte colouring of a pre-anodised aluminium...

C - Chemistry, Metallurgy

25

D

204/24.6

C25D 11/22 (2006.01)

Patent

CA 1072041

ABSTRACT Continuous process for anodizing and subsequent electrolytic colour- ing of an aluminium strip or foil with A.C. in which the strip after leaving the anodistaion unit passes through an aqueous acidic contacting electrolyte, e.g. dilute sulfuric acid, and then through the aqueous acidic colouring electrolyte containing metal ions and in which the A.C. source is connected to inert electrodes dipping in the contacting and in the colouring electrolyte respectively.

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