A Method for Quickly and Cleanly Removing the Micro-arc Oxidation Film Layer of Magnesium Alloy
A micro-arc oxidation and magnesium alloy technology, which is applied in metal processing equipment, laser welding equipment, welding equipment, etc., can solve the problems of poor magnesium alloy effect
Active Publication Date: 2022-06-10
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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AI Technical Summary
Problems solved by technology
[0005] In order to solve the problem that the existing laser cleaning technology has poor effect on magnesium alloy and is difficult to meet the requirements, the present invention provides a method for quickly and cleanly removing the micro-arc oxidation film layer of magnesium alloy
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0018] The test object is a magnesium alloy sample with a micro-arc oxidation film thickness of 15, and the surface roughness is 1.035.
Embodiment 2
[0021] The test object is a magnesium alloy sample with a micro-arc oxidation film thickness of 15, and the surface roughness is 1.012.
Embodiment 3
[0024] The test object is a magnesium alloy sample with a micro-arc oxidation film thickness of 27, and the surface roughness is 1.573.
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Abstract
A method for quickly and cleanly removing the micro-arc oxidation film of magnesium alloy, using a nano-laser with a laser wavelength of 1.064 to remove the micro-arc oxidation film of magnesium alloy, the laser output power is 6-18W, and the laser frequency is 25-100KHz , the scanning method is to repeatedly scan the laser beam on the micro-arc oxidation film layer, the scanning directions of two adjacent scans are perpendicular to each other, the scanning line spacing is 0.05-0.09mm, and the scanning speed is 510-2000mm / s. The invention reduces the laser output power, and sets the scanning mode, scanning line spacing and scanning speed of the laser, which can not only fully remove the micro-arc oxidation film layer, but also avoid ablation on the surface of the magnesium alloy, ensuring laser removal After the surface quality of the magnesium alloy, the removal speed of the film layer is fast and clean. After the film layer is removed, the surface roughness of the magnesium alloy does not exceed 3.2, which meets the requirements for the removal of the magnesium alloy micro-arc oxidation film layer.
Description
A method for quickly and cleanly removing magnesium alloy micro-arc oxidation film technical field The present invention relates to magnesium alloy oxide film removal method field, relate in particular to a kind of quick and clean removal of magnesium alloy A method of micro-arc oxidation of film layers. Background technique Magnesium has the advantages of low density, high specific strength, high specific stiffness, electromagnetic shielding performance, etc. It has a wide range of application prospects in the field of medical devices. However, magnesium and its alloys are very easy to corrode, and in special environments (such as seawater, (organic / inorganic salt solution, organic / inorganic acid-base solution, etc.), the magnesium alloy will chemically or electrochemically react with the surrounding medium. In order to improve the corrosion resistance of magnesium alloys, micro-arc oxidation is often used in the industry to carry out surface treatment, and the i...
Claims
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IPC IPC(8): B23K26/36B23K26/082B23K26/70
CPCB23K26/36B23K26/082B23K26/702
Inventor 石绪忠周洋王腾达
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP