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Aluminum alloy section bar anode oxidation surface processing process and processing tank device

An aluminum alloy profile, anodic oxidation technology, applied in the direction of anodic oxidation, etc., can solve the problems of short resin regeneration cycle, high water consumption, etc., achieve the effect of reducing oxidation time, reducing discharge treatment, and increasing the speed of oxidation film formation

Inactive Publication Date: 2007-07-11
周国斌 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the end of the 1990s, some domestic manufacturers tried ion exchange resins to remove Al 3+ However, due to the short resin regeneration cycle and too much water consumption, few manufacturers are still using it.

Method used

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  • Aluminum alloy section bar anode oxidation surface processing process and processing tank device
  • Aluminum alloy section bar anode oxidation surface processing process and processing tank device
  • Aluminum alloy section bar anode oxidation surface processing process and processing tank device

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Anodic oxidation process of the present invention and prior art comparative experiment

[0031] 1. The tank solution of the technique of the present invention is composed of: free H 2 SO 4 , 170g / L, Al 3+ , 17g / L, glycerin 1% (w / w), glycolic acid 4% (w / w), anodized with microporous air stirring.

[0032] 2. The bath solution of prior art is composed: free H 2 SO 4 , 170g / L, Al 3+ , 17g / L.

[0033] Through five groups of experiments in the prior art and six groups of experiments in the present invention, the experimental results are shown in Table 1.

[0034] Table 1 The present invention and prior art comparison experiment result

[0035] Table 1 shows that the process of the present invention shortens the oxidation time by nearly 10 minutes compared with the prior art, and the work efficiency is obviously improved.

Embodiment 2

[0037] Effect of microporous air agitation on oxide film

[0038] Bath composition: free H 2 SO 4 , 170g / L, Al 3+ ≤20g / L, glycerin 2% (w / w), lactic acid 3% (w / w), oxidation temperature 30°C, current density 1.4A / dm 2 , the oxidation time was 24 minutes, and the results are shown in Table 2.

[0039] Table 2 Effect of Microporous Stirring on Oxide Film

[0040] Stirring

[0041] Table 2 shows that microporous agitation can increase the conversion coefficient K value of the oxide film by more than 10% compared with no agitation, and can also increase the wear resistance coefficient of the film layer.

Embodiment 3

[0043] The composition of the bath solution is: free H 2 SO 4 , 170g / L, Al 3+ ≤20g / L, lactic acid 4% (w / w), ethylene glycol 3% (w / w), stirred with microporous air, temperature 35°C, current density 2.6A / dm 2 , Oxidized for 18 minutes to obtain a film thickness of 12 microns.

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PUM

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Abstract

The invention discloses an aluminum alloy typed anode oxidization surface disposing technique and disposing groove device, which is characterized by the following: (1) allocating groove liquid with 150-180g / L sulfuric acid, 5g / L-20g / L Al3+, 1-4% polyol and 1-4% organic carboxyl acid with hydroxy; (2) setting the oxidizing disposing time of each 10um oxide film for 16-18 min under 15-35 deg. c with current density at 0.5-3A / dm2 and pressure at 13-18V; (3) aerating air to do micropore stirring; (4) adding ammonia sulfate or ammonium persulphate when Al3+ is not less than 20g / L; cooling to below 15 deg. c; removing partial Al3+ sediment; setting multiple PE micropore sprayers in the groove; utilizing air bubble to microstir the groove liquid.

Description

technical field [0001] The invention relates to an aluminum alloy surface treatment technology, in particular to an aluminum alloy profile anodic oxidation surface treatment process, and the invention also relates to an anodic oxidation treatment tank device. Background technique [0002] Anodized aluminum profiles produced by traditional techniques, especially aluminum alloy door and window materials for construction, according to the quality standard of the national standard GB5237.2-2004, every ton of oxidation 2 ), the oxidation process consumes 900kwh of electricity, of which 20-30% of the electricity consumption is to control the exothermic reaction during the anodizing process of the aluminum, usually by using a refrigerator to keep the temperature of the bath liquid constant at 20 ± 2 ℃ and the power consumption. When the bath temperature exceeds 23°C, the quality of the oxide film will decline, resulting in defects such as loose film layer and poor coloring. In th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/04
Inventor 周国斌李国有
Owner 周国斌
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