Aluminum alloy surface anti-corrosion treatment method

An anti-corrosion treatment, aluminum alloy technology, applied in the direction of surface reaction electrolytic coating, electrolytic coating, anodic oxidation, etc., can solve the problems of low product qualification rate, polluted electrolyte, affecting oxidation effect, etc., to prevent electrolyte pollution and product qualification High rate, improve the effect of qualified rate

Inactive Publication Date: 2020-03-31
湖州市漾西电化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the surface processing of aluminum alloy used in the factory is a simple electrode oxidation process. In the actual production process, only a simple cleaning and pretreatment is carried out on the aluminum material, which cannot effectively remove the impurity metal on the aluminum surface, and then pollutes the electrolyte and affects the oxidation effect.
Therefore, the surface anti-corrosion technology currently used in the factory has the problem of contaminated oxidation electrolyte and low product qualification rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1. A surface anticorrosion treatment method for an aluminum alloy, comprising the following steps:

[0019] a. The aluminum alloy is dedusted and dried sequentially to obtain product a1; the dedusting is to immerse the aluminum alloy in a metal cleaning agent for scrubbing;

[0020] b. Place product a1 in a drum polishing machine with a motor speed of 80 to 90 r / min and add a polishing agent for polishing treatment for 50 minutes to obtain product b1; the polishing agent is an aluminum material polishing solution;

[0021] c, washing and degreasing the b1 product to obtain the c1 product; the degreasing treatment is to put the washed b1 product into anhydrous sodium carbonate 40~60g / L, trisodium phosphate 40~60g / L and silicic acid Sodium 20-30g / L degreasing solution for 15-30 minutes;

[0022] d, washing and alkali-etching the c1 product to obtain the d1 product; the alkali-etching treatment is immersing the washed c1 product in 55-75g / L sodium hydroxide solut...

Embodiment 2

[0028] Example 2. A surface anticorrosion treatment method for an aluminum alloy, comprising the following steps:

[0029] a. The aluminum alloy is dedusted and dried sequentially to obtain product a1; the dedusting is to immerse the aluminum alloy in a metal cleaning agent for scrubbing;

[0030] b. Place a1 product in a drum polishing machine with a motor speed of 85r / min and add a polishing agent for polishing treatment for 50 minutes to obtain b1 product; the polishing agent is an aluminum material polishing solution;

[0031] c, the product b1 is washed and degreased to obtain the product c1; the degreasing process is to put the washed b1 product into anhydrous sodium carbonate 50g / L, trisodium phosphate 50g / L and sodium silicate 25g / L 25min in the degreasing solution formed;

[0032] d, washing and alkali-etching the c1 product to obtain the d1 product; the alkali-etching treatment is immersing the washed c1 product in 65g / L sodium hydroxide solution for 70s;

[0033]...

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Abstract

The invention discloses an aluminum alloy surface anti-corrosion treatment method which comprises the following steps: a, sequentially carrying out dust removal and drying treatment on aluminum alloyto obtain a product a1; b, placing the product a1 in a roller polishing machine with a motor rotating speed ranging from 80 r / min to 90 r / min, adding a polishing agent for polishing treatment for 50 min, and obtaining a product b1; c, washing and degreasing the product b1 to obtain a product c1; d, washing the product c1 with water and carrying out alkaline etching treatment to obtain a product d1; e, washing the product d1 with deionized water, and oxidizing an electrode to obtain a product e1; and f, sealing holes of the product e1 to obtain finished aluminum alloy. The method has the advantages that the oxidation electrolyte is not polluted, and the pass percentage of the product is higher.

Description

technical field [0001] The invention relates to an aluminum alloy metal processing technology, in particular to an aluminum alloy surface anticorrosion treatment method. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry, and currently aluminum alloy is the most widely used alloy. [0003] The surface of the aluminum alloy will be oxidized in the atmosphere to form a natural oxide film, but this natural oxide film is easily corroded, which greatly reduces the service life of the aluminum alloy material. Therefore, the industry usually uses surface treatment technology to improve various properties of aluminum alloys, such as corrosion resistance and surface mechanical properties. [0004] At present, the surface processing of aluminum alloy used in the factory is a simple electrode oxidation process. In the actual production process, only a simple cleaning pretreatment is carried out on the aluminum mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/16C25D11/08C25D11/10
CPCC25D11/08C25D11/10C25D11/16
Inventor 钱顺妹
Owner 湖州市漾西电化有限公司
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