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Method for removing oxidation film of seven-series aluminum mirror surface after anodizing

An oxide film and post-oxidation technology, which is applied in the field of removing the oxide film after the seven-series aluminum mirror anode, can solve the problems of high scrap rate, high cost, complicated process, etc., and achieve the effect of complete removal

Inactive Publication Date: 2018-04-13
安徽新合富力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for removing the oxide film after the anode of the seven-series aluminum mirror surface, which solves the defects of the traditional method for removing the oxide film such as complicated procedures, high cost, and high reject rate.

Method used

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  • Method for removing oxidation film of seven-series aluminum mirror surface after anodizing
  • Method for removing oxidation film of seven-series aluminum mirror surface after anodizing
  • Method for removing oxidation film of seven-series aluminum mirror surface after anodizing

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Effect test

Embodiment 1

[0020] A method for removing the oxide film after the seven-series aluminum mirror anode. Firstly, the workpiece with the oxide film after the seven-series aluminum mirror anode is placed in a degreasing and degreasing agent for treatment, and then washed with 70℃ hot water, and then the removing liquid is prepared and heated At 60℃, place the workpiece with the oxide film after the seven-series aluminum mirror anode in the removal solution and immerse it for 15s. Take out the workpiece and rinse it repeatedly with deionized water and air dry. Then put the workpiece in the removal solution and immerse it for 30s. Wash and dry. And during the immersion process, ultrasonic equipment is used to apply ultrasonic waves to the stripping liquid.

[0021] Among them, the formula of the degrading liquid is: phosphoric acid 80g / L, chromic anhydride 6g / L, potassium permanganate 4g / L, thiourea 5g / L, and the balance is water.

[0022] Among them, the formula of the degreasing agent is: sodium ...

Embodiment 2

[0024] A method for removing the oxide film after the seven-series aluminum mirror anode. Firstly, the workpiece of the oxide film after the seven-series aluminum mirror anode is placed in a degreasing and degreasing agent for treatment, and then washed with 80℃ hot water, and then the removing liquid is prepared and heated At 70℃, place the workpiece with the oxide film after the seven-series aluminum mirror anode in the removal solution and immerse it for 20s. Take out the workpiece and rinse it repeatedly with deionized water and air dry. Then put the workpiece in the removal solution and immerse it for 40s. Wash and dry. And during the immersion process, ultrasonic equipment is used to apply ultrasonic waves to the stripping liquid.

[0025] Among them, the formula of the degrading liquid is: phosphoric acid 100g / L, chromic anhydride 8g / L, potassium permanganate 6g / L, thiourea 8g / L, and the balance is water.

[0026] Among them, the formula of the degreasing agent is: sodium c...

Embodiment 3

[0028] A method for removing the oxide film after the seven-series aluminum mirror anode. Firstly, the workpiece with the oxide film after the seven-series aluminum mirror anode is placed in a degreasing and degreasing agent for treatment, and then cleaned with 85°C hot water, and then the removing solution is prepared and heated At 80℃, place the workpiece with the oxide film after the seven-series aluminum mirror anode in the removal solution and immerse it for 25s. Take out the workpiece and rinse it repeatedly with deionized water and air dry. Then put the workpiece in the removal solution and immerse it for 50s. Wash and dry. And during the immersion process, ultrasonic equipment is used to apply ultrasonic waves to the stripping liquid.

[0029] Among them, the formula of the degrading solution is: phosphoric acid 120g / L, chromic anhydride 10g / L, potassium permanganate 4g / L, thiourea 10g / L, and the balance is water.

[0030] Among them, the formula of the degreasing agent is...

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Abstract

The invention discloses a method for removing an oxidation film of a seven-series aluminum mirror surface after anodizing. The method comprises the steps that firstly, an oxidation film workpiece of aseven-series aluminum mirror surface after anodizing is placed in an oil removing and degreasing agent for treatment, then the oxidation film workpiece is washed with hot water at the temperature of70-85 DEG C, removing liquid is prepared and heated to 60-80 DEG C, the oxidation film workpiece of the seven-series aluminum mirror surface after anodizing is placed in the removing liquid to be soaked for 15-25 seconds, the workpiece is taken out and repeatedly rinsed with deionized water and then dried through air, the workpiece is placed in the removing liquid again to be soaked for 30-50 seconds, and finally, the workpiece is rinsed and dried. According to the method for removing the oxidation film of the seven-series aluminum mirror surface after anodizing, aiming at oxidation film removing of the seven-series aluminum mirror surface after anodizing, phosphoric acid is used for being matched with chromic anhydride to serve as a removing agent, removing is successively conducted twice, the oxidation film can be quickly and completely removed, and an aluminum raw material is not eroded; and potassium permanganate and thiourea are cooperatively used, a protective film can be formed,the reaction speed is controlled, original luster of the workpiece can be maintained, and the non-toxic and environmentally friendly effects are achieved.

Description

Technical field [0001] The invention relates to the technical field of oxide film removal, in particular to a method for removing oxide film after a seven-series aluminum mirror anode. Background technique [0002] The stripping method of aluminum alloy anodic oxidation is one of the important components in the anodic oxidation process. At present, the stripping method of primary anodic oxidation is very mature, but there are few breakthroughs in the direct stripping and rework of secondary high-gloss anodes. The traditional removing liquid used for aluminum alloy is a mixture of sodium carbonate, sodium hydroxide and sodium bisulfate, and the removal is carried out at a temperature of 50℃~60℃. The anode film layer of aluminum oxide reacts with sodium hydroxide. At the same time, aluminum also reacts with sodium hydroxide to form sodium metaaluminate, which causes fogging and dullness on the high-gloss edges. If the processed T-series aluminum alloy after the anode is unqualifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/12C23G1/24
Inventor 张文涛
Owner 安徽新合富力科技有限公司
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