Manufacture method of mirror anode suitable for dyeing

A production method and anode technology, which is applied in the direction of anodic oxidation, surface reaction electrolytic coating, electrolytic coating, etc., can solve the problems that cannot completely solve the phenomenon of anode loss of light, the hardness of the oxide film is reduced, and it is difficult to achieve the surface effect.

Inactive Publication Date: 2018-03-06
CHANGHONG PRECISION TOOL DONGGUAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Anodizing is a main surface treatment method for aluminum materials. In addition to enhancing the protective performance of the substrate, the unique microporous structure of the oxide film can endow the substrate with excellent dyeing performance and significantly improve the decorative properties of aluminum materials. However, anodizing Will reduce the gloss of the substrate to a certain extent
For a long time, mirror anodization (which not only retains the metallic texture of aluminum, but also achieves a crystal-clear luster like glass and a clear reflection like a mirror) has become the technical limitation of anodizing in the field of high-end decoration. The following are two common ones. High-gloss anode production methods, but not a perfect solution
[0003] 1. Realize high-light anode by reducing the anode current density. The common current density is

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, mirror red

[0025] Step a, grinding mirror surface treatment before aluminum anode: through mechanical polishing and precision grinding;

[0026] Step b, anodic pre-treatment: degreasing and wax removal, the main process method in the market can be used, the purpose is to obtain a clean aluminum surface and prepare for the subsequent anodic oxidation;

[0027] Step c, aluminum anodizing: current density 0.8ASD, temperature 19°C, the oxidation bath liquid is opened with 98% sulfuric acid with a purity not lower than chemically pure grade, the concentration is 210g / L, and the thickness of the oxide film is 12um;

[0028] Step d, micro-sealing, completed in two steps, sealing one (90°C, sealing for 5 seconds) -> sealing two (80°C, pH 3.5-4.5, sealing for 2 minutes), mainly to avoid product transfer The pollution of oxide film in the process; The sealing agent that the present invention adopts is the H-298 of Okuno Company, concentration 40mL / L, other mainst...

Embodiment 2

[0033] Embodiment 2, mirror gray

[0034] Step a, grinding mirror surface treatment before aluminum anode: through mechanical polishing and precision grinding;

[0035] Step b, anodic pre-treatment: degreasing and wax removal, the main process method in the market can be used, the purpose is to obtain a clean aluminum surface and prepare for the subsequent anodic oxidation;

[0036] Step c, aluminum anodizing: current density 1.0ASD, temperature 20°C, the oxidation bath liquid is opened with 98% sulfuric acid with a purity not lower than chemically pure grade, the concentration is 210g / L, and the thickness of the oxide film is 15um;

[0037] Step d, micro-sealing, completed in two steps, sealing one (90°C, sealing for 5 seconds) -> sealing two (80°C, pH 3.5-4.5, sealing for 2 minutes), mainly to avoid product transfer The pollution of oxide film in the process; The sealing agent that the present invention adopts is the H-298 of Okuno Company, concentration 40mL / L, other mains...

specific Embodiment 3

[0042] Specific embodiment 3, mirror blue

[0043] Step a, grinding mirror surface treatment before aluminum anode: through mechanical polishing and precision grinding;

[0044] Step b, anodic pre-treatment: degreasing and wax removal, the main process method in the market can be used, the purpose is to obtain a clean aluminum surface and prepare for the subsequent anodic oxidation;

[0045] Step c, aluminum anodizing: current density 1.5ASD, temperature 19°C, the oxidation bath liquid is opened with 98% sulfuric acid with a purity not lower than chemically pure grade, the concentration is 180g / L, and the thickness of the oxide film is 18um;

[0046] Step d, micro-sealing, completed in two steps, sealing one (90°C, sealing for 5 seconds) -> sealing two (80°C, pH 3.5-4.5, sealing for 3 minutes), mainly to avoid product transfer The pollution of oxide film in the process; The sealing agent that the present invention adopts is the H-298 of Okuno Company, concentration 40mL / L, ot...

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PUM

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Abstract

The invention provides a manufacture method of a mirror anode suitable for dyeing. The method is characterized in that a product manufactured through the method can realize a mirror effect on the surface of an aluminum material, and is high in compatibility for dyeing and dye, suitable for dyeing of different color tones from light color to deep color, and compatible with most of anodic oxidationdyeing materials on the market, and properly gives consideration to the anti-corrosion property and decoration property of anodic oxidation. The method comprises the following steps: preliminary grinding mirror treatment of aluminum material anodes, pretreatment of anodes, aluminum anodic oxidation, hole micro sealing, post precise grinding of anode, activation of oxidation film, dyeing of oxidation film, and post hole seating treatment of anodes. The manufacture method has the innovation points that mirror grinding treatment is firstly performed on the surface of an oxidation film after anodic oxidation, so that the mirror effect is achieved, then activation and dyeing are performed, the manufacture method is different from the conventional method in which dyeing is firstly performed andthen grinding is performed, the phenomenon of uneven polishing and fading is not required to be worried, most of colors can be achieved according to actual requirements, and the mirror anode has all other advantages of an anode.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a mirror anode manufacturing method suitable for dyeing. Background technique [0002] Anodizing is a main surface treatment method for aluminum materials. In addition to enhancing the protective performance of the substrate, the unique microporous structure of the oxide film can endow the substrate with excellent dyeing performance and significantly improve the decorative properties of aluminum materials. However, anodizing Will reduce the gloss of the substrate to a certain extent. For a long time, mirror anodization (which not only retains the metallic texture of aluminum, but also achieves a crystal-clear luster like glass and a clear reflection like a mirror) has become the technical limitation of anodizing in the field of high-end decoration. The following are two common ones. High-gloss anode production methods, but none of them are perfect solutions. [...

Claims

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Application Information

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IPC IPC(8): C25D11/08C25D11/16C25D11/24
CPCC25D11/08C25D11/16C25D11/246
Inventor 王金伟何洋陈云
Owner CHANGHONG PRECISION TOOL DONGGUAN CO LTD
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