Aluminum alloy hub surface anodic oxidation treatment process

An aluminum alloy wheel, anodic oxidation technology, applied in the direction of anodic oxidation, surface reaction electrolytic coating, electrolytic coating, etc., can solve the problems affecting the appearance and quality of the wheel hub, and achieve a good sealing effect

Active Publication Date: 2014-07-23
GUANGDONG DCENTI AUTO PARTS STOCK LTD
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Problems solved by technology

[0003] At the same time, there will be some defects after the hole is sealed. If it is no

Method used

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  • Aluminum alloy hub surface anodic oxidation treatment process

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Embodiment Construction

[0023] A kind of aluminum alloy wheel hub surface anodic oxidation treatment process, comprises the following steps:

[0024] Such as figure 1 As shown, firstly, the wheel hub is produced according to the normal process, after casting, machining, painting, and after painting, the front side of the car is brightened with a CNC lathe to meet the requirements of the car bright surface product.

[0025] (1) Degreasing and degreasing: Degreasing the surface of the aluminum alloy wheel, putting the aluminum alloy wheel in 8% sulfuric acid solution at room temperature, degreasing and degreasing for 5 minutes;

[0026] The first water washing: wash the surface of the hub repeatedly with tap water for 4 minutes to ensure that the PH value of the surface of the hub is greater than 5;

[0027] (2) Neutralization: Put the aluminum alloy wheel hub into a sodium hydroxide solution with a concentration of 50g / L and a temperature of 60°C, and neutralize with alkali for 5 minutes;

[0028] T...

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Abstract

The invention discloses an aluminum alloy hub surface anodic oxidation treatment process which comprises the following steps: removing grease and oil on the surface of an aluminum alloy hub, washing with water for the first time, neutralizing, washing with water for the second time, oxidizing, washing with water for the third time, dyeing, washing with water for the fourth time, sealing, washing with water for the fifth time, performing thermal treatment, washing with water for the sixth time, and spraying golden oil. The process aims at performing anodic oxidation on the aluminum alloy hub, a cold water hole sealing method is adopted, and an anionic surfactant 2-butanol is added into a hole sealing liquid, so that the sealing effect is good. By spraying the golden hole on the surface of the hub, the hub has a surface which is glossy, smooth and clean in appearance, and thus the attractiveness is improved, and the service life of the hub is prolonged.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy wheel manufacturing and processing, in particular to an anodic oxidation treatment process for the surface of an aluminum alloy wheel. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry. Aluminum alloy wheels have won the favor of more and more private car owners for their elegant appearance, safety and comfort. Now, almost all new models use aluminum alloy wheels. However, after the aluminum alloy wheel hub is cast or forged, in order to avoid easy corrosion in the humid atmosphere, surface treatment is generally required. In the prior art, the surface treatment technology of aluminum alloy wheels is nothing more than grinding and polishing the surface first, and then coating with anti-corrosion paint. However, if the surface of the aluminum alloy wheel is not smooth or has stains before the anti-corrosion coating is...

Claims

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Application Information

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IPC IPC(8): C25D11/24C25D11/08
Inventor 谭红建曾春华
Owner GUANGDONG DCENTI AUTO PARTS STOCK LTD
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