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Aluminum alloy surface electrolytic coloring method

An aluminum alloy surface, electrolytic coloring technology, applied in the direction of anodic oxidation, etc., can solve the problems of difficult surface treatment, copper and silicon are greatly affected, and achieve the effects of inhibiting the discharge process, uniform color, and strong adhesion

Inactive Publication Date: 2017-04-26
ANHUI BAOHENG ADVANCED MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the addition of magnesium has little effect on surface treatment characteristics, but the influence of copper, silicon, etc. is so great that it is difficult to perform good surface treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for electrolytic coloring of an aluminum alloy surface, comprising the following steps:

[0015] (1) After polishing the aluminum alloy, put it into a mixed organic solvent, soak it for 8 minutes and then take it out. The mixed organic solvent is made of the following components by weight: 19 parts of polyacrylic acid, 60 parts of isopropanol, dodecylamine 13 copies;

[0016] (2) Put the aluminum alloy treated in step (1) into the electrolytic solution for electrolytic coloring, wherein the electrolytic solution is made of the following components by weight: 26 parts of nickel sulfate, 0.1 part of dithionic acid, pyrosulfuric acid 2 parts of potassium, 1 part of cinchonine sulfate, 5 parts of 1,2-octanediol, 6 parts of methyl D-lactate, 10 parts of disodium uridine, 100 parts of water;

[0017] (3) Put the electrolytically colored aluminum alloy into the sealing solution for sealing treatment. The temperature of the sealing solution is 85°C, and the sealing so...

Embodiment 2

[0020] A method for electrolytic coloring of an aluminum alloy surface, comprising the following steps:

[0021] (1) After grinding the aluminum alloy, put it into a mixed organic solvent, soak it for 9 minutes, and take it out. The mixed organic solvent is made of the following components by weight: 23 parts of polyacrylic acid, 63 parts of isopropanol, dodecylamine 15 copies;

[0022] (2) Put the aluminum alloy treated in step (1) into the electrolyte for electrolytic coloring, wherein the electrolyte is made of the following components by weight: 28 parts of nickel sulfate, 0.2 parts of dithionic acid, pyrosulfuric acid 3 parts of potassium, 1 part of cinchonine sulfate, 6 parts of 1,2-octanediol, 7 parts of methyl D-lactate, 13 parts of disodium uridine, 110 parts of water;

[0023] (3) Put the electrolytically colored aluminum alloy into the sealing solution for sealing treatment. The temperature of the sealing solution is 90°C. The sealing solution is made of the follow...

Embodiment 3

[0026] A method for electrolytic coloring of an aluminum alloy surface, comprising the following steps:

[0027] (1) After grinding the aluminum alloy, put it into a mixed organic solvent, soak it for 10 minutes and then take it out. The mixed organic solvent is made of the following components by weight: 26 parts of polyacrylic acid, 65 parts of isopropanol, dodecylamine 16 copies;

[0028] (2) Put the aluminum alloy treated in step (1) into the electrolyte for electrolytic coloring, wherein the electrolyte is made of the following components by weight: 30 parts of nickel sulfate, 0.3 parts of dithionic acid, pyrosulfuric acid 4 parts of potassium, 2 parts of cinchonine sulfate, 7 parts of 1,2-octanediol, 8 parts of methyl D-lactate, 15 parts of disodium uridine, 120 parts of water;

[0029] (3) Put the electrolytically colored aluminum alloy into the sealing solution for sealing treatment. The temperature of the sealing solution is 95°C, and the sealing solution is made of ...

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PUM

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Abstract

The invention discloses an aluminum alloy surface electrolytic coloring method. The aluminum alloy surface electrolytic coloring method comprises the following operation steps that (1) aluminum alloy is subjected to polishing treatment, put into a mixed organic solvent to be immersed for 8-10 min and then taken out; (2) the aluminum alloy processed through the step (1) is put into an electrolytic solution to be subjected to electrolytic coloring; and (3) the aluminum alloy subjected to electrolytic coloring is put into a hole sealing solution to be subjected to hole sealing treatment. By means of the electrolytic coloring method, a prepared colored film on the surface of the aluminum alloy is uniform in color, bubbles, cracks and other defects are avoided, the adhesive force of the colored film is high, the abrasion resistance and the corrosion resistance are high, and the quality of the aluminum alloy is greatly improved.

Description

technical field [0001] The invention belongs to the field of aluminum alloy material preparation, and in particular relates to an electrolytic coloring method for the surface of an aluminum alloy. Background technique [0002] The content of aluminum in the earth's crust is second only to oxygen and silicon, ranking third. It is the most abundant metal in the earth's crust, accounting for 7-8% of the total mass of the earth's crust. It mainly exists in aluminosilicate ores, and aluminum It exists in the form of earth ore and cryolite. The industrial output of aluminum in the world is second only to iron, and it has become the second largest metal material used in industry after steel. Although adding other elements can change the properties of aluminum and make it more widely used, some properties of aluminum are not ideal, such as hardness, wear resistance and corrosion resistance. Therefore, in order to improve its corrosion resistance, enhance its surface decoration eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/14C25D11/08C25D11/16C25D11/18
CPCC25D11/14C25D11/08C25D11/16C25D11/18
Inventor 洪功正潘永刚蔡永波
Owner ANHUI BAOHENG ADVANCED MATERIAL TECH CO LTD
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