Aluminum alloy anodizing treatment method

A technology of anodic oxidation and treatment method, which is applied in the direction of anodic oxidation, electrolytic coating, surface reaction electrolytic coating, etc. It can solve the problems of low oxidation film formation efficiency, uneven protective layer, weak corrosion resistance, etc.

Inactive Publication Date: 2019-01-11
东莞市史雷帝三维数控科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to improve the weak corrosion resistance of the surface of the aluminum alloy in the past, the insufficient uniformity of the protective layer, the poor bonding force between the aluminum alloy and the protective layer, and the low efficiency of oxide film formation, the technical solution of the present invention is:

Method used

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  • Aluminum alloy anodizing treatment method

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Embodiment 1

[0029] A method for aluminum alloy anodic oxidation, comprising the following steps in sequence:

[0030] 1) Polishing: Put the aluminum alloy to be polished in the main tank with a temperature of 90°C and a volume ratio of sulfuric acid and phosphoric acid of 4:1 for polishing. Cool in an auxiliary tank with a volume ratio of sulfuric acid and phosphoric acid of 4:1, and the cooling time is 0.5h. After cooling, place the metal in a recovery tank filled with clean water to recover and treat the residual liquid on the metal surface;

[0031] 2) Degreasing: Put the polished aluminum alloy in an ultrasonic device equipped with an alkaline sodium hydroxide solution at a temperature of 45°C, and improve the degreasing effect of the sodium hydroxide solution on the aluminum alloy by means of vibration. The sodium mass concentration is 90g / L, and the oil removal time is 5min;

[0032] 3) Cleaning: The degreased aluminum alloy is fully rinsed with deionized water with a flow rate of ...

Embodiment 2

[0040] A treatment method for aluminum alloy anodic oxidation, comprising the following steps in sequence:

[0041] 1) Polishing: Put the aluminum alloy to be polished in the main tank with a temperature of 90°C and a volume ratio of sulfuric acid and phosphoric acid of 4:1 for polishing. Cool in an auxiliary tank with a volume ratio of sulfuric acid and phosphoric acid of 4:1, and the cooling time is 0.5h. After cooling, place the metal in a recovery tank filled with clean water to recover and treat the residual liquid on the metal surface;

[0042] 2) Degreasing: Put the polished aluminum alloy in an ultrasonic device equipped with an alkaline sodium hydroxide solution at a temperature of 45°C, and improve the degreasing effect of the sodium hydroxide solution on the aluminum alloy by means of vibration. The sodium mass concentration is 90g / L, and the oil removal time is 5min;

[0043] 3) Cleaning: The degreased aluminum alloy is fully rinsed with deionized water with a flo...

Embodiment 3

[0055] A treatment method for aluminum alloy anodic oxidation, comprising the following steps in sequence:

[0056] 1) Polishing: Put the aluminum alloy to be polished in the main tank with a temperature of 90°C and a volume ratio of sulfuric acid and phosphoric acid of 4:1 for polishing. Cool in an auxiliary tank with a volume ratio of sulfuric acid and phosphoric acid of 4:1, and the cooling time is 0.5h. After cooling, place the metal in a recovery tank filled with clean water to recover and treat the residual liquid on the metal surface;

[0057] 2) Degreasing: Put the polished aluminum alloy in an ultrasonic device equipped with an alkaline sodium hydroxide solution at a temperature of 45°C, and improve the degreasing effect of the sodium hydroxide solution on the aluminum alloy by means of vibration. The sodium mass concentration is 90g / L, and the oil removal time is 5min;

[0058] 3) Cleaning: The degreased aluminum alloy is fully rinsed with deionized water with a flo...

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Abstract

The invention belongs to the technical field of metal surface treatment and particularly relates to an aluminum alloy anodizing treatment method. The aluminum alloy anodizing treatment method comprises the following steps of 1, polishing; 2, deoiling; 3, cleaning; 4, coarsening; 5, cleaning; 6, anodizing; 7, coloring; 8, hole sealing; and 9, drying. According to the aluminum alloy anodizing treatment method, the binding force formed between an oxidation film and the surface of aluminum alloy is increased through coarsening; an alternating current and a direct current are introduced into electrolyte in a mixed and superposed manner, and generation efficiency of the oxidation film is improved; and thus, the oxidation film large in binding force with the aluminum alloy and high in generationefficiency is obtained.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to an aluminum alloy anodic oxidation treatment method. Background technique [0002] Metal is the foundation of material civilization in human life, and it is the most widely used in engineering materials. The development of human social civilization is closely related to the application of metal materials. However, metals are faced with different types of damage, and the most extensive form of damage is corrosion. , Metal corrosion With the development of economic construction, the harm caused by metal corrosion is particularly prominent. [0003] According to relevant statistics, about 10% of the metals produced by human beings every year are damaged by corrosion. Metal damage caused by corrosion affects the damage of metal products, and the economic loss caused is far greater than the value of the metal itself. [0004] Aluminum alloy is an extremel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/08C25D11/16C25D11/22C25D11/24
CPCC25D11/08C25D11/16C25D11/22C25D11/246
Inventor 马浩鹏杨茂伟莫炯堂
Owner 东莞市史雷帝三维数控科技有限公司
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