Metallic surface anode treatment method

Anodizing, metal surface technology, applied in anodizing, surface reaction electrolytic coating, electrolytic coating, etc., can solve the problem of inability to obtain color patterns, and achieve the effect of fine patterns

Inactive Publication Date: 2009-06-17
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing anodic treatment process also uses multiple anodic treatments and multiple colorings to obtain oxide films of different colors. Although this method can obtain multi-color oxide films on the metal surface, each treatment can only be done on the same plane. Continuous, three-dimensional color patterns cannot be obtained on the curved surface at one time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The metal surface anodic treatment method of the preferred embodiment of the present invention is described by taking the anodic surface treatment of a metal substrate as an example, including the following steps:

[0018] (1) Clean the metal substrate with a solution containing a corresponding metal degreasing agent, then place the metal substrate in a solution containing phosphoric acid and sulfuric acid for chemical polishing, and then use a solution containing nitric acid to strip the metal substrate after the chemical polishing. film to remove a layer of black film formed on the surface of the workpiece due to the above-mentioned chemical polishing treatment.

[0019] (2) Anodize the metal substrate to form an oxide film on the surface of the metal substrate. In this step, the anodic treatment solution contains 180-200g / L of sulfuric acid and less than 20g / L of aluminum ions, the treatment voltage is 11-13V, and the treatment is performed at room temperature for 30...

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Abstract

A metal surface anodizing method comprises the following steps: (1) anodizing a substrate to form an oxide film on the surface of the substrate; (2) coloring the oxide film; (3) spraying photosensitive ink on the substrate to completely shield the oxide film on the surface of the substrate; (4) pressing and sticking a film with a required pattern in vacuum to a metal substrate sprayed with the ink; (5) exposing to solidify the ink which is not shielded by the pattern on the film; (6) removing un-solidified ink; (7) removing the oxide film which is not shielded by the ink; (8) anodizing the substrate for the second time; (9) coloring the oxide film obtained by the second anodizing; (10) removing the remaining shielding ink; and (11) repeating the steps of (3) to (10). The anodizing method can help obtain continuous and stereoscopic patterns on the curved surface of the metal substrate by one time.

Description

technical field [0001] The invention relates to a metal surface anodic treatment method, in particular to a multi-color anodic treatment method applicable to curved surfaces. Background technique [0002] Aluminum, titanium and their alloy materials are widely used in aviation, electronics, communication and other fields due to their advantages of high strength and light weight. In order to further improve its surface quality and visual effect, the industry usually adopts anodic treatment process or painting method to achieve. For example, U.S. Patent No. 5,215,606 discloses a decoration method for titanium-based objects. Before spraying the object, the substrate is first heated under vacuum to make the surface grains grow, and then anodized, and the surface is controlled by changing the two-pole voltage. The color of the oxide layer, the thickness of the oxide film obtained by this method is uniform, and it lacks the three-dimensional effect of bumps and concaves. The exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/02C25D11/04C25D11/26
CPCC25D11/243C25D11/246C25D11/34C25D11/26C25D11/02C25D11/30C25D5/02
Inventor 曹良煜曾发红胡丽霞
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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