Section aluminum anode oxide film copper salt electrolytic coloring production process

Abstract

The invention discloses a section aluminum anode oxide film copper salt electrolytic coloring production process. The section aluminum anode oxide film copper salt electrolytic coloring production process comprises the following treatment steps of oil removing, washing, washing, anodizing, washing, washing, an activation working procedure, an electrolytic coloring, washing, washing, hole sealing and a washing treatment working procedure and is characterized in that an electrolytic coloring agent in the electrolytic coloring step comprises, by weight percent, 2%-8% of copper sulfate, 20%-40% ofmagnesium sulfate, 4%-6% of sulfuric acid, 1%-3% of a dispersing agent, 5%-10% of pyrophosphate, 3%-7% of EDTA and the balance water, a bath solution in an electrolytic coloring trough is composed of30g / L-50g / L of the electrolytic coloring agent, 18 g / L-25 g / L of free sulphuric acid, 5g / L-25 g / L of copper sulfate pentahydrate and the balance water, and in the electrolytic coloring treatment step, the temperature of the bath solution in the electrolytic coloring trough is 20 DEG C-22 DEG C, the voltage is 16v-19v, and the coloring time is 0.5min-0.8min. A coloring film layer color system of section aluminum prepared through the coloring production process is complete, uniform, stable and good in quality, a color fading problem does not exist in the using process, relatively high corrosionresistance is achieved, and volume production can be formed.

Description

technical field [0001] The invention relates to the technical field of surface treatment and decoration of aluminum and aluminum alloy products, in particular to a copper salt electrolytic coloring production process of anodic oxidation film of aluminum profiles. Background technique [0002] Aluminum alloy extrusion profiles are widely used, and its surface treatment technology has achieved rapid development. In order to improve the protection and decoration performance of aluminum alloy profiles, it is necessary to carry out anodic oxidation and electrolytic coloring treatment on aluminum alloy materials. At present, there are many kinds of electrolytic coloring processes for aluminum alloy materials, but the copper salt coloring technology has obvious color difference after coloring due to the difficult edge effect and tip discharge, and the treated product is corrosion-resistant after the subsequent process. Poor performance, uneven film color, and even obvious color cha...

AI Technical Summary

Problems solved by technology

At present, there are many kinds of electrolytic coloring processes for aluminum alloy materials, but the copper salt coloring technology has obvious color difference after coloring due to the difficult edge effect and tip discharge, and the treated product is corrosion-resistant after the subsequent process. Poor performance, uneven film color, and even obvious color change and fading problems are the reasons why mass production has not been formed.

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