Scanning type laser-assisted micro-arc oxidation device and method

A micro-arc oxidation, laser-assisted technology, applied in anodizing, electrolytic coatings, surface reaction electrolytic coatings, etc., can solve the problems of difficult to achieve local repair on site, inability to handle large workpieces, and reducing the fatigue life of substrates. Area effect and tip discharge phenomenon, the effect of improving the ability of atomic diffusion, and improving the quality of surface strengthening

Active Publication Date: 2020-03-24
ZHEJIANG UNIV OF TECH
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Problems solved by technology

Micro-arc oxidation technology still faces the following problems in practical application: (1) high energy consumption, limited by the design and manufacturing level of ultra-high-power power supply, resulting in the inability to handle super-large workpieces; (2) local repairs on site are difficult to achieve; (3) ) It is extremely...

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  • Scanning type laser-assisted micro-arc oxidation device and method

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Embodiment 1

[0029] Pretreatment: Use wire cutting to cut the workpiece base into 60mm*20mm*20mm rectangular slices, and polish the rectangular slices, remove the surface oxide film and place them in alcohol solution, ultrasonic cleaning for 5 to 10 minutes, take out the sample after the ultrasonic is finished, and use Rinse with deionized water and dry naturally after rinsing;

[0030] The workpiece is a titanium alloy, and the specific method for grinding and removing the surface oxide film layer of the workpiece is: the workpiece is polished with 240#, 400#, 800#, and 1200# metallographic sandpaper to remove the surface oxide film and surface scratches.

[0031] First, the surface of the workpiece 5 is scanned by a laser, and then the workpiece 5 is subjected to micro-arc oxidation treatment.

[0032] Laser scanning: Aim the laser at the surface of the sample, the distance difference between the laser and the surface of the workpiece is about 280-300mm, the area to be processed is 40mm*...

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Abstract

The invention provides a scanning type laser-assisted micro-arc oxidation device and method. The device is not limited by the size of the electrolytic cell and does not require power supply of ultra-high power and can perform local strengthening or repairing treatment so as to reduce the energy consumption, improve the film forming efficiency and the film layer quality, reduce micro-arc oxidationarcing voltage and energy consumption, perform micro-arc oxidation more easily and enter a film forming stage more quickly, realize machining of large-size workpieces or workpieces with complex moldedsurfaces, solve the problems of the area effect and point discharge in the traditional machining device, the reduce limitation of the workpiece size on the power output power and realize micro-arc oxidation of a specific area controlling an inter-electrode electric field.

Description

technical field [0001] The invention relates to a scanning laser-assisted micro-arc oxidation device and a process method thereof. Background technique [0002] In recent years, my country's aerospace industry has achieved rapid development. Due to the particularity of the use environment, aerospace equipment needs to use a large number of special engineering materials. This has prompted great progress in the research of aerospace materials in our country, and one of the research focuses is the lightweight of aerospace materials. After long-term production practice and scientific research, people have gradually strengthened some metal materials by adding alloy elements and using heat treatment to obtain a series of light alloys. Some light alloys are light alloys with excellent mechanical properties and high specific stiffness. , can meet the lightweight requirements of the aerospace field, but some light alloys have low surface hardness and poor corrosion resistance, which...

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Application Information

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IPC IPC(8): C25D11/02C25D11/06C25D11/26
CPCC25D11/022C25D11/026C25D11/024C25D11/06C25D11/26
Inventor 吴国龙陆丹华姚建华王晔
Owner ZHEJIANG UNIV OF TECH
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