Preparation method for multicolor oxide film

An oxide film, anodized film technology, applied in anodizing, coating, surface reaction electrolytic coating, etc., can solve the problems of insufficient oxidation degree of oxide film, poor wear resistance and corrosion resistance, etc., to improve the performance of dyeing , to maintain the effect of texture, corrosion resistance and excellent wear resistance

Inactive Publication Date: 2010-01-06
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the poor wear resistance and corrosion resistance of the multi-color oxide film formed in the prior art, the need to coat polymer materials, and the oxidation degree of the oxide film obtained by the second or more anodic oxidation is not

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0011] The preparation method of the multi-color oxide film of the present invention includes repeating the steps of forming an anodic oxide film, the step of forming an anodic oxide film includes sequentially performing colored anodic oxidation, forming a protective layer on the obtained colored anodic oxide film and laser engraving, the colored anodic oxide film Anodizing includes sequentially performing anodizing, dyeing and sealing on the surface of the substrate to obtain a colored anodic oxidation film. The protective layer is used to isolate the electrolyte in the colored anodic oxidation from the previously formed colored anodic oxidation film. Laser engraving is used to remove at least a portion of the previously formed colored anodized film, exposing at least a portion of the surface of the substrate.

[0012] The material of the protective layer is sufficient as long as it can achieve the above purpose, that is, as long as the protective layer is not corroded by the ...

Embodiment 1

[0024] This example illustrates the preparation method of the multicolor oxide film of the present invention.

[0025] (1) Pretreatment

[0026] Industrial pure aluminum (Shenzhen Xinlinghua Mold Steel Co., Ltd., model 1A85, composition: Fe≤0.01% by weight, Si≤0.08% by weight, Cu≤0.01% by weight, the rest is aluminum) is impregnated as a base material in 40 g / L 1. Take out the alloy degreasing powder (LD-208 alloy degreasing powder purchased from Shenzhen Desheng Chemical Co., Ltd.) solution at a temperature of 60°C for 5 minutes, and wash the alloy degreasing powder on the surface of the substrate with water.

[0027] The above-mentioned substrate after degreasing and wax removal is immersed in a solution composed of phosphoric acid with a concentration of 700 g / L and sulfuric acid with a concentration of 200 g / L, and after chemical polishing for 5 seconds, it is immediately immersed in water to clean the surface of the substrate After immersing the substrate in 10 g / L sodiu...

Embodiment 2

[0050] Treat the substrate according to the method of Example 1, the difference is that the substrate is an aluminum alloy (Alcoa, 6061-T6), and after step (7) before step (8) also includes the third anodic oxidation , dyeing, sealing, and drying, and the dye is K520 of Taiwan Yongguang Chemical Co., Ltd.

[0051] Finally, the substrate A2 with a red flower shape, a yellow flower shape and a green background on the surface is obtained.

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Abstract

The invention relates to a preparation method for multicolor oxide film, comprising that an anode oxide film forming step is repeatedly carried out. The anode oxide film forming step comprises: oxidizing color anode, and forming a protective layer and laser carving on a color anode oxide film. The color anode oxidation comprises anode oxidation, dyeing and hole sealing are carried out in turn on the surface of a base material so as to obtain a color anode oxide film. The protective layer is used for separating electrolyte oxidized by a color anode and a color anode oxide film formed previously. The laser carving is used for removing at least one part of color anode oxide film formed previously so as to cause the surface of parts of base material to be exposed. The integral corrosion resistance and abrasion resistance of the oxide film on the surface of the base material, which is prepared according to the method of the invention, are high, and no other macromolecule materials need to be coated, so that the texture of the oxide film is kept.

Description

technical field [0001] The invention relates to a method for preparing an oxide film, in particular to a method for preparing a multicolor oxide film. Background technique [0002] The preparation method of the colored oxide film on the surface of substrates such as aluminum and aluminum alloys is to anodize the substrates such as aluminum or aluminum alloys in sulfuric acid to form an oxide film, and then carry out dyeing treatment in a solution containing organic dyes, through adsorption, The dye enters the pores of the oxide film, and then through the sealing treatment, the surface of the aluminum and aluminum alloy and other substrates has various colors. [0003] However, this method can only form a single color. Therefore, in order to enrich the color of the oxide film, CN2546462Y discloses a method for obtaining a multi-color oxide film as described below. [0004] The first method includes: (1) anodizing the aluminum alloy substrate to form an oxide film; (2) removi...

Claims

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Application Information

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IPC IPC(8): C25D11/04B44D5/00C25D11/18
Inventor 陆平高春楠李爱华
Owner BYD CO LTD
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