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Aluminum alloy anode oxidation technology

An anodic oxidation and aluminum alloy technology, applied in the field of metal surface treatment, can solve problems such as difficulties, achieve the effects of increasing production efficiency, high hardness, and enhancing customer experience value

Inactive Publication Date: 2018-01-30
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides an aluminum alloy anodic oxidation process in order to solve the problem that it is difficult to complete a rather thick anodic oxidation film on the processed parts of aluminum alloy profile parts in a short period of time.

Method used

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  • Aluminum alloy anode oxidation technology

Examples

Experimental program
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Effect test

Embodiment 1

[0023] An aluminum alloy anodizing process, comprising the steps of:

[0024] A. Degreasing: immerse the aluminum alloy profile in 8% sulfuric acid solution for 12 minutes and then take it out. The immersion temperature is 25°C;

[0025] B. Alkali cleaning: immerse the degreased aluminum alloy profile in 1.5mol / L sodium hydroxide lotion for 5 minutes, and the immersion temperature is 25°C;

[0026] C. Water washing: rinse the aluminum alloy profiles after alkali washing with water;

[0027] D. Anodizing: Place the washed aluminum alloy profile in an electrolytic cell with a concentration of 10% sulfuric acid solution for electrolysis. The electrolysis temperature is 30°C. The aluminum alloy profile is used as the anode and the lead plate is used as the cathode. The electrolysis method It is a method of DC-AC superimposition, so that an oxide film is formed on the surface of aluminum alloy profiles after anodic oxidation. The specific process of DC-AC superposition electrolysi...

Embodiment 2

[0033] The difference between embodiment 2 and embodiment 1 is that in step A, the concentration of sulfuric acid solution is 10%, the immersion time is 10min and then taken out, and the immersion temperature is 30°C.

Embodiment 3

[0035] The difference between Example 3 and Example 1 is that in step B, the degreased aluminum alloy profile is immersed in 2 mol / L sodium hydroxide washing solution for 3 minutes, and the immersion temperature is 30°C.

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Abstract

The invention belongs to the technical field of metal surface treatment, and relates to an aluminum alloy anode oxidation technology. According to the technology, an aluminum alloy section is arrangedin an electrolytic bath loaded with oxidation electrolyte, so as to be electrolyzed; the electrolysis temperature is 10 to 30 DEG C; the aluminum alloy section is taken as an anode; a lead plate is taken as a cathode; an electrolysis mode is a direct current-alternating current overlapped method, so that an oxidation film is formed on the surface of the aluminum alloy section subjected to anode oxidation, the electrolysis speed is further improved through strict controlling of direct current-alternating current ratio, the deposition rate of the oxidation film is improved, an oxidation film with the thickness greater than 100 micrometers can be formed within 5min, the micro hardness of the obtained aluminum alloy section oxidation film is greatly improved, defects on the surface of the oxidation film are reduced, and the surface texture is denser.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment and relates to an aluminum alloy anodic oxidation process. Background technique [0002] With the increasingly widespread application of aluminum alloy profiles, people's requirements for aluminum alloy profiles are also increasing, not only requiring high mechanical properties, but also requiring excellent decorative appearance and corrosion resistance. In order to meet this Requirements, reasonable and advanced surface treatment technology of aluminum alloy profiles are gradually being developed and applied by people. [0003] In the existing process of preparing aluminum alloy profiles, in many cases, the aluminum alloy parts are anodized in order to improve the corrosion resistance, wear resistance, insulation, etc. of the profiles. Anodizing treatment is an oxidation treatment performed by immersing the treated part of an aluminum profile part in an electrolyte bath (sulfuric...

Claims

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Application Information

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IPC IPC(8): C25D11/04
Inventor 李佳宁刘兴武钟伟柱鞠浩然
Owner CHINA ZHONGWANG
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