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Spraying method after textures the surface of an aluminum alloy are etched with laser light

A technology of aluminum alloy surface and laser etching, which is applied to the surface coating liquid device, laser welding equipment, coating, etc., can solve the problem of large roughness, increase of aluminum alloy surface coating, coating adhesion, etc. problem, to achieve the effect of increasing adhesion and good effect

Inactive Publication Date: 2020-01-07
CIVIL AVIATION FLIGHT UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such treatment will cause excessive roughness, and the paint cannot penetrate into the laser-etched groove, which will affect the adhesion of the coating. At the same time, the thickness of the coating when spraying aluminum alloy after laser etching will also affect the adhesion of the coating. efforts to make an impact, and there are no reports on increasing the adhesion of aluminum alloy surface coatings by laser etching texture structures

Method used

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  • Spraying method after textures the surface of an aluminum alloy are etched with laser light
  • Spraying method after textures the surface of an aluminum alloy are etched with laser light
  • Spraying method after textures the surface of an aluminum alloy are etched with laser light

Examples

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Embodiment 1

[0032] A spraying method after laser etching the surface texture of aluminum alloy. The mixed and matured paint is sprayed onto the aluminum alloy whose surface is etched into a square or rhombus. The thickness of the coating is 40 μm. The relative humidity is 55%.

[0033] Such as figure 1 and figure 2 As shown, a method for laser surface texturing of aluminum alloys, the method includes using a galvanometer in a laser processing device to control the scanning path of the laser, and etching a square or rhombus textured surface on the surface of the aircraft aluminum alloy, with a scanning speed of 2000mm / s, the frequency is 90kHz, the pulse width is 0.35μs, the number of scans is 1, the spacing is 0.3mm, the spot diameter is 50μm, and the power is 24W. The diameter of the pits produced by the laser on the aluminum alloy surface is 50 μm, and the shape of the pits is approximately circular. The pits are superimposed to form a scanning path, and the textured surface is diam...

Embodiment 2

[0035] A spraying method after laser etching the surface texture of aluminum alloy. The mixed and matured paint is sprayed onto the aluminum alloy whose surface is etched into a square or rhombus. The thickness of the coating is 45 μm. The relative humidity is 55%.

[0036] Such as figure 1 and image 3 As shown, a method for laser surface texturing of aluminum alloys, the method includes using a galvanometer in a laser processing device to control the scanning path of the laser, and etching a square or rhombus textured surface on the surface of the aircraft aluminum alloy, with a scanning speed of 2000mm / s, the frequency is 90kHz, the pulse width is 0.35μs, the number of scans is 1, the spacing is 0.3mm, the spot diameter is 50μm, and the power is 24W. The diameter of the pits produced by the laser on the aluminum alloy surface is 50 μm, and the shape of the pits is approximately circular. The pits are superimposed to form a scanning path, and the textured surface is diamo...

Embodiment 3

[0038] A spraying method after laser etching the surface texture of aluminum alloy. The mixed and matured paint is sprayed onto the aluminum alloy whose surface is etched into a square or rhombus. The thickness of the coating is 50 μm. The relative humidity is 55%.

[0039] Such as figure 1 and figure 2 As shown, a method for laser surface texturing of aluminum alloys, the method includes using a galvanometer in a laser processing device to control the scanning path of the laser, and etching a square or rhombus textured surface on the surface of the aircraft aluminum alloy, with a scanning speed of 2000mm / s, the frequency is 90kHz, the pulse width is 0.35μs, the number of scans is 1, the spacing is 0.3mm, the spot diameter is 50μm, and the power is 24W. The diameter of the pits produced by the laser on the aluminum alloy surface is 50 μm, and the shape of the pits is approximately circular. The pits are superimposed to form a scanning path, and the textured surface is diam...

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Abstract

The invention provides a spraying method after textures the surface of an aluminum alloy are etched with laser light. In the spraying method, the aluminum alloy, on the surface of which the textures are etched with the laser light, is sprayed with a mixed and aged coating, wherein the thickness of a coating layer is 40-50 microns, and the textures on the surface of the aluminum alloy is square orrhombus. By using the method to spray the surface of the aluminum alloy, the coating penetrates into a groove etched with the laser light, so that adhesive force of the coating layer is increased.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy spraying, in particular to a spraying method after laser etching the surface texture of aluminum alloy. Background technique [0002] In order to improve the weather resistance, chemical resistance, and corrosion resistance of aircraft aluminum alloy skin, it is necessary to spray special aviation coatings on the surface of aircraft aluminum alloy skin. Improving the adhesion of aluminum alloy skin surface coating has always been a research topic in the field of civil aviation. One of the hot spots. The development of new coatings is not only expensive, but also takes a long time. In order to increase the adhesion of coatings, surface modification of aluminum alloy skins has become an economical and effective method. [0003] The surface treatment of aluminum alloy by chemical method requires degreasing, pickling, cleaning and other processes, but the waste liquid produced by chemical meth...

Claims

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Application Information

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IPC IPC(8): B05D7/14B23K26/046B23K26/08B23K26/082B23K26/362B23K103/10
CPCB05D7/14B23K26/046B23K26/0876B23K26/362B23K26/082B23K2103/10
Inventor 李绍龙杨文锋侯秋园刘畅张殊伦李佐付蝉媛钱自然
Owner CIVIL AVIATION FLIGHT UNIV OF CHINA
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