Electric conductive oxidation technique for automobile aluminum part

A technology of aluminum alloy parts, conductive oxidation, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve problems such as unsatisfactory bonding, increase operation difficulty, affect production efficiency, etc., and achieve good paint adhesion, Good anti-corrosion effect and low cost effect

Active Publication Date: 2016-03-30
ANHUI BOWEI CHANGAN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bonding between the film layer formed by the prior art treatment solution and the aluminum substrate is not ideal. Therefore, when using the treatment solution for oxidation treatment, strict control of process conditions is required, which increases the difficulty of operation and affects production. efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0036] The conductive oxidation process of automobile aluminum alloy parts is characterized in that it comprises the following steps:

[0037] 1) Degreasing: first, degrease the workpiece with organic solvents and chemical solvents;

[0038] 2) Cleaning: Then put the workpiece into the flowing clear water tank for cleaning, wash the workpiece in the flowing clear water tank for 15 seconds, the water temperature is 27 degrees Celsius,

[0039] 3) Cleaning with acid: put the workpiece into nitric acid and soak for 5s at a temperature of 27 degrees Celsius, then put the workpiece into a flowing clear water tank and repeat cleaning for 15s;

[0040] 4) Conductive oxidation process:

[0041] The first step is to put it into the electrified oxidation pool one, control the pH to 1.6, soak for 5 minutes, and the temperature is 40 degrees Celsius;

[0042] The second step is to put it into the energized oxidation pool 2, control the pH to 2, soak for 5 minutes, and soak at 45 degrees...

Embodiment 3

[0051] The conductive oxidation process of automobile aluminum alloy parts is characterized in that it comprises the following steps:

[0052] 1) Degreasing: first, degrease the workpiece with organic solvents and chemical solvents;

[0053] 2) Cleaning: Then put the workpiece into the flowing clear water tank for cleaning, wash the workpiece in the flowing clear water tank for 12 seconds, the water temperature is 25 degrees Celsius,

[0054] 3) Acid cleaning: put the workpiece into nitric acid and soak for 5s at a temperature of 27 degrees Celsius, then put the workpiece into a flowing clear water tank and repeat cleaning for 12s;

[0055] 4) Conductive oxidation process:

[0056] The first step is to put it into the electrified oxidation pool 1, control the pH to 1.6, soak for 5 minutes, and the temperature is 37 degrees Celsius;

[0057] The second step is to put it into the energized oxidation pool 2, control the pH to 1.7, soak for 5 minutes, and soak at 45 degrees Cels...

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PUM

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Abstract

The invention discloses an electric conductive oxidation technique for an automobile aluminum part. The technique comprises the steps of deoiling, cleaning through clear water for multiple times, acid cleaning, an electric conductive oxidation process, drying and storage. Firstly, the aluminum alloy workpiece is subjected to deoiling treatment and then cleaned through the flowing clear water for multiple times, acid is adopted for initial surface treatment, and then an oxidation pond is energized for oxidation treatment, so that the corrosion resistance and abrasion resistance of the aluminum alloy workpiece are improved; a good coated film layer is formed on the surface of the workpiece, the adhesive force of spray paint is good, the corrosion resistance effect is good, an oxidization agent is free of pollution and environmentally friendly after the treatment, raw materials are simple, and the cost is low.

Description

technical field [0001] The invention relates to an alloy oxidation process, in particular to a conductive oxidation process for an aluminum alloy part of an automobile. Background technique [0002] As a widely used industrial material, aluminum alloy is favored by various industries such as aerospace, automobile, refrigeration industry, precision instrument, etc. and other widespread attention. Due to the low surface hardness of aluminum alloy, it is easy to be worn, therefore, surface treatment is often required after aluminum parts are processed. In the prior art, the most common surface treatment is chemical oxidation treatment using an oxidation treatment solution. The bonding between the film layer formed by the prior art treatment solution and the aluminum substrate is not ideal. Therefore, when using the treatment solution for oxidation treatment, it is necessary to strictly control the process conditions, which increases the difficulty of operation and affects the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/12C25D11/16
CPCC25D11/12C25D11/16
Inventor 朱金龙胡明
Owner ANHUI BOWEI CHANGAN ELECTRONICS
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