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Surface treatment method for light metal material

A surface treatment, light metal technology, applied in anodizing and other directions, can solve the problem that the anodization of light metal materials cannot meet the requirements, etc., and achieve the effect of increasing added value, bright colors, and excellent surface hardness

Inactive Publication Date: 2008-07-02
浙江博凡核工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, on surfaces that require high hardness and high wear resistance, such as valve cores, valve sleeves, oil cylinders, and cylinders, surfaces that require anti-friction, such as automobiles, electric tools, and machinery, require high corrosion resistance surfaces, such as chemical, The anti-corrosion layer of marine equipment requires a surface with high electrical insulation, thermal stability, heat insulation, and heat insulation surface, such as heat-resistant and heat-insulating parts of the engine, and anodizing light metal materials is far from meeting the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example illustrates the surface treatment method for light metal materials provided by the present invention.

[0026] (1) Grinding, polishing, degreasing and alkali cleaning the aluminum alloy substrate.

[0027] Grind the aluminum alloy base material by manual grinding, remove the excess material and burrs of the aluminum alloy base material, and then polish it with sandpaper until it is smooth with 1200-mesh sandpaper, and then use acetone as a degreasing solvent for the polished, The aluminum alloy base material after polishing is cleaned, and is repeated 2 times. After the degreasing is completed, the aluminum alloy substrate is cleaned with an alkaline solution with a sodium hydroxide content of 30 g / L, a sodium phosphate content of 40 g / L, and a sodium silicate content of 20 g / L. The cleaning temperature is 85° C., and the cleaning time is 10 minutes. Then wash with water for 5 minutes.

[0028] (2) Micro-arc oxidation treatment

[0029] Dip the above-tr...

Embodiment 2

[0042] This example illustrates the surface treatment method for light metal materials provided by the present invention.

[0043] (1) Grinding, polishing, degreasing and alkali cleaning the aluminum alloy substrate.

[0044] Grind the aluminum alloy base material by manual grinding, remove the excess material and burrs of the aluminum alloy base material, and then polish it with sandpaper until it is smooth with 1200-mesh sandpaper, and then use acetone as a degreasing solvent for the polished, The aluminum alloy base material after polishing is cleaned, and is repeated 2 times. After the degreasing is completed, the aluminum alloy substrate is cleaned with an alkaline solution with a sodium hydroxide content of 30 g / L, a sodium phosphate content of 40 g / L, and a sodium silicate content of 20 g / L. The cleaning temperature is 85° C., and the cleaning time is 10 minutes. Then wash with water for 5 minutes.

[0045] (2) Micro-arc oxidation treatment

[0046] The above-mentio...

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Abstract

A surface treatment method of a light metal material comprises the following steps of forming a micro-arc oxide film on the surface of the light metal material, and sequentially subjecting the surface of the light metal material with the micro-arc oxide film to laser etching and anode oxidization. The light metal material obtained by the method in the invention has the advantages of very high hardness, abrasion resistance, corrosion resistance and electrical insulation, strong appearance decoration, bright and diversified color and three-dimensional pattern, thus greatly improving the additional value of the light metal material.

Description

technical field [0001] The invention relates to a surface treatment method for light metal materials. Background technique [0002] At present, light metal materials, such as aluminum and aluminum alloys, magnesium, titanium and their alloys, are widely used in aerospace, aviation, automobiles, construction and electronics due to their light weight, high specific strength, good rollability, ductility, and easy processing. industry. But the fly in the ointment is that the surface of light metal is soft, not resistant to wear and high temperature, and especially the corrosion potential of aluminum is low, and the overall corrosion is more serious. In order to overcome the defects of light metal surface performance, expand the application range and prolong the service life, it is necessary to carry out surface treatment on light metal materials to solve or improve the protection, decoration and function. At present, the surface treatment of light metal materials is mainly ele...

Claims

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Application Information

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IPC IPC(8): C25D11/04
Inventor 林军宫清陈梁
Owner 浙江博凡核工程技术有限公司
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