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Aluminum alloy surface whitening solution and surface treatment method thereof

A technology of aluminum alloy surface and treatment method, which is applied in the direction of surface reaction electrolytic coating, anodic oxidation, electrolytic coating, etc., can solve the problems of high cost of whitening solution on aluminum alloy surface and limitation of application product range, etc., so as to reduce production cost, Effect of improving surface hardness and corrosion resistance

Active Publication Date: 2013-09-18
SUZHOU MITAC PRECISION TECH
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Problems solved by technology

However, at present, the cost of whitening solution for aluminum alloy surface that can be applied to the anodic oxidation treatment process obtained through the market is relatively high, and the range of application products is greatly limited.

Method used

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  • Aluminum alloy surface whitening solution and surface treatment method thereof

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] A kind of aluminum alloy surface whitening solution provided by the invention uses water as a solvent, and each liter of the whitening solution contains:

[0035] Ammonium chloride 8-10g;

[0036] Ammonium sulfate 40-50g;

[0037] Ammonium fluoride 50-60g;

[0038] Ammonium bifluoride 90-100g.

[0039] see figure 1 , which shows the process flow chart of surface treatment of aluminum alloy by using the aluminum alloy surface whitening solution of the present invention. The present invention provides a specific step of using the above-mentioned aluminum alloy surface washing solution to carry out surface treatment on the aluminum alloy surface as follows:

[0040] Degreasing: put the prefabricated aluminum alloy product into a solution containing 60g / L degreasing agent for degreasing treatment, the treatment temperature is 60°C, and ...

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Abstract

The invention provides an aluminum alloy surface whitening solution. By taking water as a solvent, each liter of whitening solution comprises 8-10g of ammonium chloride, 40-50k of ammonium sulfate, 50-60g of ammonium fluoride and 90-100g of ammonium bifluoride. The invention also provides a method for performing surface treatment on the aluminum alloy surface by utilizing the aluminum alloy surface whitening solution. The method sequentially comprises the following steps: degreasing, alkali erosion, neutralizing, chemical polishing, neutralizing, whitening, anodic oxidation, hole sealing and drying. Compared with the prior art, the aluminum alloy surface whitening solution and the aluminum alloy surface treatment method have the advantages that an aluminum alloy anode product of which the surface has a good matte whitening appearance effect can be obtained, the surface hardness and corrosion resistance of the product subjected to anodic oxidation treatment are improved, and when the aluminum alloy surface whitening solution is applied to production, the production cost can be greatly reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of aluminum alloy surface treatment, in particular to an aluminum alloy surface whitening solution and a method for using the whitening solution to wash and anodize the aluminum alloy surface. 【Background technique】 [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. The process of using an aluminum alloy product as an anode in an electrolyte solution and using electrolysis to form an aluminum oxide film on its surface is called anodic oxidation treatment of aluminum alloys. Anodized aluminum alloy products are called aluminum alloy anode products. After the surface of the aluminum alloy is whitewashed with a whitewashing solution, and then anodized, an aluminum alloy anode product with a matte whitewashed appearance on the surface can be ...

Claims

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Application Information

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IPC IPC(8): C23G1/34C25D11/04C25D11/16
Inventor 雷振华
Owner SUZHOU MITAC PRECISION TECH
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