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High-light anode oxidation and electrophoresis process of aluminium alloy

Anodizing, aluminum alloy technology, applied in anodizing, electrophoretic plating, electrolytic coating, etc., can solve the problem of unsatisfactory treatment process effect, etc., to achieve strong acid and alkali resistance, good film layer, and improved grade. Effect

Active Publication Date: 2013-10-16
GUANGDONG YAOYINSHAN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, the anodic oxidation electrophoresis process is only performed on the surface of the aluminum alloy with low brightness, and the effect of the treatment process is often not satisfactory, and it is necessary to further improve its technology.

Method used

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  • High-light anode oxidation and electrophoresis process of aluminium alloy
  • High-light anode oxidation and electrophoresis process of aluminium alloy
  • High-light anode oxidation and electrophoresis process of aluminium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Surface pre-treatment of profiles: Mechanically polish the aluminum profiles. The operation steps are to install wax on the motor with a cloth wheel, and then rotate at high speed to scan the surface of the aluminum alloy, and then use phosphoric acid (85%) to 60%, sulfuric acid : 35%, nitric acid: 5% three kinds of acid configuration bath, chemical polishing treatment in the environment of 120 ℃, to get a mirror aluminum alloy surface that is better than the traditional pretreatment. The pre-treated aluminum profile is immersed in anodic oxidation, sulfuric acid 160 g / L, temperature: 20°C, oxidation time 20 minutes, current density 1.5 A / dm2, to obtain a colorless and transparent anodic oxidation film. Positioning product 1# series for indoor use.

[0029] After three times of water washing, it enters the coloring tank and is dyed in the warehouse. The dye ([-NNN-] metallized azo dye) is 5g / L, and the dyeing time is 1 minute at room temperature with a pH value of 6, an...

Embodiment 2

[0033] Profile surface pre-treatment: Mechanically polish the billet aluminum profile. The operation steps are to use a cloth wheel to install on the motor, add wax and rotate at high speed to scan the surface of the aluminum alloy, and then use phosphoric acid (85%) to 60%, sulfuric acid : 35%, nitric acid: 5% three kinds of acid configuration bath, chemical polishing treatment in the environment of 120 ℃, to get a mirror aluminum alloy surface that is better than the traditional pretreatment. The pre-treated aluminum profile is immersed in anodic oxidation, sulfuric acid 180 g / L, temperature: 20°C, oxidation time 35 minutes, current density 1.5 A / dm2, to obtain a colorless and transparent anodic oxidation film. Position 2# series products for outdoor use.

[0034] After three times of water washing, it enters the coloring tank and is dyed in the warehouse. The dye ([-NNN-] metallized azo dye) is 5g / L, and the dyeing time is 1 minute at room temperature with a pH value of 6, ...

Embodiment 3

[0038] Surface pre-treatment of profiles: Mechanically polish the aluminum profiles. The operation steps are to use a cloth wheel to install on the motor, add wax and then rotate at a high speed to scan the surface of the aluminum alloy, and then use phosphoric acid (85%) to 60%, sulfuric acid : 35%, nitric acid: 5% three kinds of acid configuration bath, chemical polishing treatment, get better than the traditional pre-treatment mirror aluminum alloy surface. The pre-treated aluminum profile is immersed in anodic oxidation, sulfuric acid 180 g / L, temperature: 20°C, oxidation time 28 minutes, current density 1.5 A / dm2, to obtain a colorless and transparent anodic oxidation film. Position 3# series products for outdoor use.

[0039] Then enter the sealing tank for sealing. The main components of the bath are: sealing agent (acrylic acid), 3-6g / L, Ni 2+ : 1.0-2.0g / L, temperature 60°C, pH: 6, treatment for 10 minutes.

[0040] After washing the sealed profile with water (one ti...

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Abstract

The invention discloses a high-light anode oxidation and electrophoresis process of aluminium alloy, which is rarely used in the industry of all aluminum material factories and is most suitable for batch production. The high-light anode oxidation and electrophoresis process comprises the following procedures of: (1) high-light treatment of the aluminium alloy; (2) generation of an oxidation film by anode oxidation; (3) coloring; (4) high-temperature hole sealing; and (5) electrophoresis and curing procedures. The high-light anode oxidation and electrophoresis process disclosed by the invention has the advantages that for the aluminium treated by the process, the color is bright without large change, a layer of electrophoresis paint film is coated on the surface, the glossiness is bright, the corrosion resistance and the weather resistance are optimal, the decorative effect is optimal, the aluminum alloy can be arranged outdoors for sunning, the acid and alkali resistance is high, and the process control is easy in the production process.

Description

technical field [0001] The invention relates to an aluminum alloy anodic oxidation surface treatment process, in particular to a production process for an aluminum alloy high-gloss anodic oxidation electrophoresis. Background technique [0002] The chemical affinity of aluminum to oxygen is particularly strong, and its surface is always covered by a deadly oxide film in the atmosphere, but the natural aluminum oxide film is extremely thin, has large porosity, low mechanical strength, corrosion resistance and wear resistance Neither can meet the needs of corrosion protection. Using electrochemical methods, a dense high-quality oxide film can be formed on the surface of aluminum (or aluminum alloy), and the film is thicker, and the thickness can reach tens to hundreds of microns, which can effectively improve the corrosion resistance of the rate. In addition, since the formed oxide film has uniform gaps, it can be treated with polar dyeing with organic dyes. After sealing, th...

Claims

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Application Information

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IPC IPC(8): C25D11/08C23F3/02C25D11/22C25D13/00C23F17/00
Inventor 王建兵梁润炳涂利
Owner GUANGDONG YAOYINSHAN ALUMINUM
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