Section aluminum anode oxide film copper salt electrolytic coloring production process
An anodic oxidation film, electrolytic coloring technology, applied in electrolytic coating, surface reaction electrolytic coating, coating, etc., can solve the problems of no mass production, poor corrosion resistance of the film layer, uneven film color, etc., and achieve strong durability Corrosion resistance, strong weather resistance, uniform color film effect
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Embodiment 1
[0023] A production process of copper salt electrolytic coloring of anodic oxidation film of aluminum profiles, comprising the following processing steps: degreasing, water washing, water washing, anodizing, water washing, water washing, activation process, electrolytic coloring, water washing, water washing, sealing and water washing treatment processes, The electrolytic coloring agent in the described electrolytic coloring step comprises the following components by weight percentage:
[0024]
[0025] The composition of bath liquid in described electrolytic coloring tank is:
[0026]
[0027] The remaining amount of water in the tank solution in the electrolytic coloring tank refers to the preparation of the electrolytic colorant with a concentration of 30-50g / L, free sulfuric acid with a concentration of 18-25g / L and pentasine with a concentration of 15-25g / L. The amount of water used to hydrate copper sulfate.
[0028] In the electrolytic coloring treatment step, th...
Embodiment 2
[0040]On the basis of Example 1, this Example 2 is used as a preferred embodiment, wherein the electrolytic coloring agent in the electrolytic coloring step includes the following components by weight percentage:
[0041]
[0042] The composition of bath liquid in described electrolytic coloring tank is:
[0043]
[0044]
[0045] In the electrolytic coloring treatment step, the temperature of the bath solution in the electrolytic coloring tank is 21°C, the voltage is 18v, and the coloring time is 4.5 minutes.
[0046] The pyrophosphate is a mixture of sodium pyrophosphate and potassium pyrophosphate in a ratio of 1:1.
[0047] In the chemical activation step, the composition of the chemical activation treatment liquid is: 5% phosphoric acid, 3% aluminum chloride, 5% sulfuric acid, 3% inorganic salt, 4% organic compound, water balance, wherein, current density: 2.0A / dm 2 , the treatment temperature is 13°C, and the treatment time is 4min.
[0048] The inorganic sa...
Embodiment 3
[0053] On the basis of Example 1, this Example 3 is used as a preferred embodiment, wherein the electrolytic coloring agent in the electrolytic coloring step includes the following components by weight percentage:
[0054]
[0055]
[0056] The composition of bath liquid in described electrolytic coloring tank is:
[0057]
[0058] In the electrolytic coloring treatment step, the temperature of the bath solution in the electrolytic coloring tank is 22°C, the voltage is 19v, and the coloring time is 8 minutes.
[0059] The pyrophosphate is sodium pyrophosphate and / or potassium pyrophosphate.
[0060] In the chemical activation step, the composition of the chemical activation treatment liquid is: phosphoric acid 8%, aluminum chloride 5%, sulfuric acid 6%, inorganic salt 4%, organic compound 5%, water balance, wherein, current density: 2.5A / dm 2 , the processing temperature was 15°C, and the processing time was 1 min.
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