Mechanism and characterization of nanosecond laser rust-removal on AH36 steel |
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| Authors: | TAO Qing KUANG Wenxiang WEI Liangpeng YIN Yegang CHENG Jian LIU Dun |
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| Affiliation: | Laser Group, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China;Hubei Key Laboratory of Modern Manufacturing Quantity Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China,Laser Group, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China,Laser Group, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China,Laser Group, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China,Laser Group, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China and Laser Group, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China |
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| Abstract: | In this paper, the effects of different laser powers, repetition rates, and spot overlaps on the surface roughness, micromorphology, and Vickers hardness of rusted AH36 steel were researched in the rust removal experiment of fiber pulse laser on the marine steel surface. Then, the mechanical properties, corrosion resistance, and metallographic microstructure of the surface of samples after laser cleaning were analyzed. The experimental results show that when the processing parameters were the laser power of 40 W, the repetition rate of 110 kHz, and the spot overlap of 50%, the rust removal effect on AH36 steel was the best, and it met the cleanliness standard of marine steel coating. Moreover, its Vickers hardness, mechanical properties, corrosion resistance, and repainting properties were superior to those of the original substrate. |
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