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Preparation process of novel aluminum alloy anodic oxidation film

An anodic oxide film and anodic oxidation technology, applied in the direction of anodic oxidation, can solve the problem of not being able to adhere closely, and achieve the effect of strong adsorption force, high corrosion resistance and many voids

Inactive Publication Date: 2018-04-20
FOSHAN CITY GAOMING GAOSHENG ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 4. The oxidation product is partially dissolved and cannot be tightly attached to the anode (electrolytic polishing)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Specific steps are as follows:

[0035] S01: Degreasing treatment:

[0036] The aluminum alloy after polishing is placed in the degreasing liquid of circulating flow, and described degreasing liquid component and component content are sodium carbonate 3wt%, sodium phosphate 6wt%, surfactant 4wt%, flavanol 0.07wt%, remaining The amount is water, the temperature of the degreasing liquid is 55°C during the treatment process, and the degreasing time is 2 minutes; the surfactant is a mixture of fatty acid sucrose esters with an HLB value of 13 and alkyl polyglycosides, and the mass ratio of the two is 1.25:1.

[0037] The purpose of degreasing is to remove the oil stain on the surface of the aluminum alloy sample, so as to ensure the uniformity of the surface of the aluminum alloy sample and the cleaning of the anodizing solution in the subsequent process, and improve the surface quality of the aluminum alloy sample. Common aluminum alloy degreasing methods include organic ...

Embodiment 2

[0056] In the present embodiment, the conditions are all the same as in Example 1, and the changed conditions are: the coconut oil fatty acid diethanolamide of 0.04g / L has also been added in the color paste. Coconut oil fatty acid diethanolamide can not only increase the permeability of the color paste to the anodized film on the surface of the aluminum alloy sample, but also make the plant fragrance more intense.

[0057] In this embodiment, the final good product rate of the aluminum alloy sample was 98%.

Embodiment 3

[0059] The conditions in this example are the same as in Example 1, except that 0.04 g / L of barium metaborate is added to the color paste, which can improve the stability of the color paste and make it more resistant to storage.

[0060] In this embodiment, the final good product rate of the aluminum alloy sample was 98%.

[0061] The anodic oxidation process in the present invention can also be used for color registration, that is, the step S05 can be repeated by using color pastes of different colors, and patterns of various colors can be obtained.

[0062] From the description of the above examples, it can be seen that the anodic oxidation film preparation process provided in the present invention adopts the sulfuric acid anodic oxidation method, supplemented by suitable components and methods, so that the prepared aluminum alloy anodic oxidation film has a natural fragrance and improves its added value. Furthermore, the anodic oxidation film prepared by the anodic oxidati...

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Abstract

The invention discloses a preparation process of a novel aluminum alloy anodic oxidation film. The preparation process comprises the steps that S01, degreasing treatment is conducted; S02, chemical polishing treatment is conducted; S03, corrosive wash is conducted, specifically, an aluminum profile after being subjected to degreasing is placed in circularly flowing corrosive wash liquid for corrosive wash; S04, washing is conducted; S05, anodic oxidation treatment is conducted; S06, coloring is conducted, specifically, an aluminum alloy treated through the S04 step is washed until the surfacehas no residue, drying is conducted, and color paste is screen-printed on the anodic oxidation film of the aluminum alloy; and S07, hole sealing is conducted, specifically, the surface of the aluminumalloy is rinsed by using 50-55 DEG C of water, and hole sealing treatment is conducted in 100-102 DEG C of water steam. The preparation process of the novel aluminum alloy anodic oxidation film adopts a sulfuric acid anode oxidation method, supplemented with matched components and methods, the prepared aluminum alloy anodic oxidation film has natural fragrance, and added value of the aluminum alloy anodic oxidation film is promoted. Further, the anodic oxidation film prepared through the anodic oxidation process has high hardness, many gaps and high adsorption capability, is beneficial for dyeing, and has high corrosion resistance after being subjected to sealing treatment.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy surface treatment, and in particular relates to a preparation process of a novel aluminum alloy anodic oxidation film. Background technique [0002] Under normal circumstances, a layer of 0.2-0.6μm natural oxide film will be formed on the surface of aluminum alloy, thus preventing further corrosion of aluminum. The natural oxide film on the surface of the aluminum alloy is very thin and soft, so it is easily damaged and loses its protective effect. At the same time, the oxide film on the surface of the aluminum alloy has a certain conductivity, and it is difficult to prevent the aluminum alloy substrate from being subjected to electrochemical corrosion. Therefore, in order to effectively protect aluminum alloy products from corrosion in different environments, it is necessary to artificially manufacture a thicker oxide film with excellent performance, and to oxidize the surface of aluminum...

Claims

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Application Information

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IPC IPC(8): C25D11/16C23F3/03C23G1/24C23F1/36C25D11/08C25D11/10C25D11/24
CPCC25D11/16C23F1/36C23F3/03C23G1/24C25D11/08C25D11/10C25D11/24C25D11/246
Inventor 刘镇华刘敏华谭泽权
Owner FOSHAN CITY GAOMING GAOSHENG ALUMINUM CO LTD
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