Process for continuous electrolytic coloring of aluminum or aluminum base alloy strip and wire

摘要

An improved process for electrolytically coloring an anodically oxidized aluminum or aluminum base alloy strip or wire which comprises, while continuously travelling the strip or wire through an electrolytic coloring means, subjecting the anodically oxidized strip or wire as a cathode to direct current electrolysis using an electrolytic coloring means comprising at least one hollow body having an opening for continuously supplying a coloring bath onto the surface of the oxidized strip or wire and an electrode acting as an anode therein, and continuously supplying the coloring bath through the opening of the hollow body onto the surface of the oxidized strip or wire.