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Chinese Journal of Lasers, Volume. 47, Issue 6, 602003(2020)

Porosity Defects Suppression in Narrow V-Groove Laser Remanufacturing Zone Through Electromagnetic Composite Field

Wang Liang1,2, Xia Hongchao1,2, Hu Yong1,2, Luo Jian1,2, Tantai Fanliang3, and Yao Jianhua1,2、*
Author Affiliations
  • 1Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
  • 2Collaborative Innovation Center of High-End Laser Manufacturing Equipment Co-Sponsored by Ministry and Province,Hangzhou, Zhejiang 310014, China
  • 3Dazu Remanufacturing Co., Ltd., Shandong Energy Heavy Equipment Group, Taian, Shandong 271000, China
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    AbstractGet PDF(in Chinese)
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    References (20)
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    Figures & Tables(9)
    Schematic of V-groove laserrepair assisted with electromagnetic field

    Fig. 1. Schematic of V-groove laserrepair assisted with electromagnetic field

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    Cross-section of laser remanufactured V-groove at different laser power. (a) P=1800 W; (b) P=1700 W; (c) P=1600 W; (d) P=1500 W; (e) P=1400 W; (f) P=1300 W

    Fig. 2. Cross-section of laser remanufactured V-groove at different laser power. (a) P=1800 W; (b) P=1700 W; (c) P=1600 W; (d) P=1500 W; (e) P=1400 W; (f) P=1300 W

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    Effects of laser power on porosity and pore number

    Fig. 3. Effects of laser power on porosity and pore number

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    Cross-section of laser remanufactured V-groove at different magnetic inductions. (a) 0 mT; (b) 400 mT; (c) 800 mT; (d) 1200 mT

    Fig. 4. Cross-section of laser remanufactured V-groove at different magnetic inductions. (a) 0 mT; (b) 400 mT; (c) 800 mT; (d) 1200 mT

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    Effects of magnetic induction on pore number and porosity

    Fig. 5. Effects of magnetic induction on pore number and porosity

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    Remelting area of V-groove. (a) P=1800 W, B=0 mT, S=3.66 mm2; (b) P=1300 W, B=0 mT, S=1.46 mm2; (c) P=1300 W, B=1200 mT, S=1.58 mm2

    Fig. 6. Remelting area of V-groove. (a) P=1800 W, B=0 mT, S=3.66 mm2; (b) P=1300 W, B=0 mT, S=1.46 mm2; (c) P=1300 W, B=1200 mT, S=1.58 mm2

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    Schematics of filling mechanism under electromagnetic composite field. (a) Stress analysis of metal melt; (b) stress analysis of bubble

    Fig. 7. Schematics of filling mechanism under electromagnetic composite field. (a) Stress analysis of metal melt; (b) stress analysis of bubble

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    Effect of magnetic induction on Lorentz force at the same current density

    Fig. 8. Effect of magnetic induction on Lorentz force at the same current density

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    • Table 1. Process parameters of laser remanufacturing

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      Table 1. Process parameters of laser remanufacturing

      Laser powerP /WPowder feedingrate R /(g·min-1)Scanning speedv /(mm·s-1)Current densityi /(A·mm-2)Magnetic inductionB /mT
      1300--18001462.50--1200
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    Wang Liang, Xia Hongchao, Hu Yong, Luo Jian, Tantai Fanliang, Yao Jianhua. Porosity Defects Suppression in Narrow V-Groove Laser Remanufacturing Zone Through Electromagnetic Composite Field[J]. Chinese Journal of Lasers, 2020, 47(6): 602003

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    Paper Information

    Category: laser manufacturing

    Received: Dec. 9, 2019

    Accepted: --

    Published Online: Jun. 3, 2020

    The Author Email: Yao Jianhua (laser@zjut.edu.cn)

    DOI:10.3788/CJL202047.0602003

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology