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Aluminum profile electrolytic coloring method

An electrolytic coloring, aluminum profile technology, applied in electrolytic coatings, surface reaction electrolytic coatings, anodizing, etc., to achieve the effect of reducing transit time, reducing fading rate, and reducing activity

Active Publication Date: 2016-11-02
GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems described above

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for electrolytic coloring of aluminum profiles, comprising the following steps:

[0034] Coloring process: control the concentration of stannous sulfate in the electrolytic cell to 7g / l, the concentration of nickel sulfate to 25g / l, the concentration of sulfuric acid to 6g / l, the pH of the bath to 1.6, the coloring voltage to 10V, and the temperature of the bath to 18 ℃ for electrolytic coloring.

[0035]Washing process: the crane transfers the aluminum profiles after the coloring process to the first water washing tank, controls the vertical speed of the crane to 0.2m / s, and controls the horizontal speed of the crane to 0.2m / s, of which the first The pH of the first washing tank is 2, and after the cleaning is completed, it is transferred to the second washing tank, wherein the pH of the second washing tank is 5.

[0036] Using the operation method given in Example 1 to carry out electrolytic coloring on the aluminum profile, the defect of darker edge color i...

Embodiment 2

[0038] A method for electrolytic coloring of aluminum profiles, comprising the following steps:

[0039] Coloring process: control the concentration of stannous sulfate in the electrolytic cell to 5g / l, the concentration of nickel sulfate to 27g / l, the concentration of sulfuric acid to 8g / l, the pH of the bath to 1.2, the coloring voltage to 11V, and the temperature of the bath to 20 ℃ for electrolytic coloring.

[0040] Washing process: the crane transfers the aluminum profiles after the coloring process to the first water washing tank, controls the vertical speed of the crane to 0.3m / s, and controls the horizontal speed of the crane to 0.3m / s, of which the first The pH of the first washing tank is 3, and after the cleaning is completed, it is transferred to the second washing tank, wherein the pH of the second washing tank is 6.

[0041] Using the operation mode given in Example 2 to carry out electrolytic coloring on the aluminum profile, the obtained aluminum profile has ...

Embodiment 3

[0043] A method for electrolytic coloring of aluminum profiles, comprising the following steps:

[0044] Pre-treatment process: The process parameters of the anodic oxidation step are: oxidation tank temperature 20°C, sulfuric acid concentration: 170g / l, aluminum ion concentration: 15g / l, current density: 140A / dm 2 .

[0045] Coloring process: control the concentration of stannous sulfate in the electrolytic cell to be 4g / l, the concentration of nickel sulfate to be 28g / l, the concentration of sulfuric acid to be 10g / l, the pH of the bath to be 1.1, the coloring voltage to be 12V, and the temperature of the bath to be 21 ℃ for electrolytic coloring.

[0046] Washing process: the crane transfers the aluminum profiles after the coloring process to the first water washing tank, controls the vertical speed of the crane to 0.3m / s, and controls the horizontal speed of the crane to 0.3m / s, of which the first The pH of the first washing tank is 3.5, and after the cleaning is complet...

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PUM

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Abstract

The invention discloses an aluminum profile electrolytic coloring method which comprises the coloring step and the washing step. After the coloring step of an aluminum profile is completed, the aluminum profile is transferred to the washing step through a crane, in addition, the traveling speed of the crane in the vertical direction is controlled to be 0.2-0.4 m / s, and the traveling speed of the crane in the horizontal direction is controlled to be 0.2-0.4 m / s. Meanwhile, the technological parameters of an electrolytic cell in the coloring step are controlled as below, the concentration of stannous mono-sulphate is 4-8 g / l, the concentration of nickel sulfate is 23-30 g / l, the concentration of sulfuric acid is 6-12 g / l, and the pH value is controlled to be 1-1.6. According to the electrolytic coloring method, the coloring function of residual cell liquid to the edge of the aluminum profile can be effectively restrained by adjusting the technological parameters of the electrolytic cell, and through the combination of controlling the transfer speed of the crane, the technical problem that the color of the edge of an aluminum profile product is too dark is solved while the electrolytic coloring effect is maintained.

Description

technical field [0001] The invention relates to the coloring technology of aluminum profiles, in particular to an electrolytic coloring method for eliminating electrolytic coloring defects of aluminum profiles. Background technique [0002] Commonly used coloring methods for aluminum alloys include chemical coloring, electrolytic coloring, and powder spraying coloring. Among them, electrolytic coloring is widely used because of its low cost, uniform coloring film, and good weather resistance. [0003] The electrolytic coloring method includes anodic oxidation electrolytic coloring technology, which means that the aluminum alloy is anodized before coloring, and then the anodized aluminum alloy is placed in an inorganic salt electrolyte solution for electrolysis, and the metal ions in the solution penetrate into the porous layer of the oxide film. At the bottom of the metal, deposits of metal, metal oxide or metal compound are formed, and various colors are displayed due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/08C25D11/14C25D11/24
CPCC25D11/08C25D11/14C25D11/24
Inventor 罗炜鲁秤发黄海坤刘建辉
Owner GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP
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