Aluminum alloy copper salt coloring electrophoresis process

An aluminum alloy and electrophoresis technology, applied in electrophoretic plating, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems such as hindering copper coloring electrophoretic alloy profiles from gas, easy to appear color difference, etc., to achieve uniform and stable coloring, sealing time Long-lasting, anti-dissolving effect

Active Publication Date: 2016-08-03
GUANGDONG WEIYE ALUMINUM FACTORY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, copper-colored electrophoretic alloy profiles have a special production process, which is prone to chromatic aberration problems during the production process, which in turn leads to production yields and hinders the further expansion of the vitality of copper-colored electrophoretic alloy profiles.

Method used

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  • Aluminum alloy copper salt coloring electrophoresis process
  • Aluminum alloy copper salt coloring electrophoresis process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The aluminum alloy copper salt coloring electrophoresis process is as follows:

[0048] S1 Pre-oxidation treatment: Prepare a sulfuric acid bath and install the alloy profiles to be colored on the rack. The bath must be stirred in advance, and the alloy profiles in the same row must have the same model.

[0049] S2 anodizing step: Put the alloy profile into a sulfuric acid bath and anodic oxidation to generate an oxide film with film holes.

[0050] The current density of the sulfuric acid bath used in this embodiment is 125A / dm 2 , The temperature of the sulfuric acid bath is 20°C.

[0051] S3 coloring step: Put the anodized profile obtained in step S2 into a copper salt electrolytic coloring tank for electrolytic coloring, and use copper wires to achieve electrical connection.

[0052] Wherein, the bath solution of the copper salt electrolytic coloring tank contains copper sulfate pentahydrate and sulfuric acid, the concentration of copper sulfate pentahydrate is 14g / L, the con...

Embodiment 2

[0060] The aluminum alloy copper salt coloring electrophoresis process is as follows:

[0061] S1 Pre-oxidation treatment: Prepare a sulfuric acid bath and install the alloy profiles to be colored on the rack. The bath must be stirred in advance, and the alloy profiles in the same row must have the same model.

[0062] S2 anodizing step: Put the alloy profile into a sulfuric acid bath and anodic oxidation to generate an oxide film with film holes.

[0063] The current density of the sulfuric acid bath used in this example is 135A / dm 2 , The temperature of the sulfuric acid bath is 23°C.

[0064] S3 coloring step: Put the anodized profile obtained in step S2 into a copper salt electrolytic coloring tank for electrolytic coloring, and use copper wires to achieve electrical connection.

[0065] Wherein, the bath solution of the copper salt electrolytic coloring tank contains copper sulfate pentahydrate and sulfuric acid, the concentration of copper sulfate pentahydrate is 16 g / L, the conce...

Embodiment 3

[0073] The aluminum alloy copper salt coloring electrophoresis process is as follows:

[0074] S1 Pre-oxidation treatment: Prepare a sulfuric acid bath and install the alloy profiles to be colored on the rack. The bath must be stirred in advance, and the alloy profiles in the same row must have the same model.

[0075] S2 anodizing step: Put the alloy profile into a sulfuric acid bath and anodic oxidation to generate an oxide film with film holes.

[0076] The current density of the sulfuric acid bath used in this embodiment is 130A / dm 2 , The temperature of the sulfuric acid bath is 22°C.

[0077] S3 coloring step: Put the anodized profile obtained in step S2 into a copper salt electrolytic coloring tank for electrolytic coloring, and use copper wires to achieve electrical connection.

[0078] Wherein, the bath solution of the copper salt electrolytic coloring tank contains copper sulfate pentahydrate and sulfuric acid, the concentration of copper sulfate pentahydrate is 15 g / L, the co...

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Abstract

The invention discloses an aluminum alloy copper salt coloring electrophoresis process. The process comprises the following steps: (1) sulfuric acid groove liquid is prepared; and an alloy profile to be colored is mounted on a lifting frame; (2) the alloy profile is put in the groove liquid for anodically oxidized to generate a layer of oxide film with a film hole; (3) the anodically oxidized alloy profile is put in a copper salt electrolytic coloring groove for electrolytic coloring; (4) the colored alloy profile is sealed; (5) the residual groove liquid in the hole sealing process is washed by water; (6) the electrophoresis is performed for the alloy profile washed by the water; and (7) the alloy profile is cured after electrophoresis. The pH value of the hole sealing groove liquid is higher; the hole sealing distance is longer; a half hole sealing process is adjusted to a near all hole sealing process for preventing dissolving of copper; and the alloy profile is more stable after coloring, and is higher in corrosion resistance.

Description

Technical field [0001] The invention relates to an aluminum alloy anodic oxidation surface treatment process, in particular to an aluminum alloy copper salt coloring electrophoresis process. Background technique [0002] With the development of economy, people pay more and more attention to the diversification and individualization of decorative colors. Because copper salt colored electrophoretic alloy profiles have the advantages of delicate and soft color and bright and transparent after electrophoresis, high-end buildings have used copper salt colored aluminum. Alloy doors and windows replace the original stainless steel doors and copper doors. Copper colored electrophoresis alloy profiles have become a new type of material that is popular in the construction aluminum alloy profile industry, with huge market potential. [0003] However, the copper-colored electrophoretic alloy profile has a special production process, which is prone to chromatic aberration problems during the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/08C25D11/22C25D11/18C25D13/00
CPCC25D11/08C25D11/18C25D11/22C25D13/00
Inventor 潘伟津
Owner GUANGDONG WEIYE ALUMINUM FACTORY GRP
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