Chinese Journal of Lasers, Volume. 46, Issue 10, 1002012(2019)

Nanosecond-Pulsed-Laser Paint Stripping of HT250 Gray Cast Iron

Zhaoheng Guo1、**, Jianzhong Zhou1、*, Xiankai Meng1, Qi Sun1, Ming Zhu1, Jianian Yang1, and Qiang Fu2
Author Affiliations
  • 1School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
  • 2Nanjing Institute of Advanced Laser Technology, Nanjing, Jiangsu 210038, China
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    Figures & Tables(12)
    Schematics of equipment and path of paint stripping. (a) Schematic of setup for laser paint stripping; (b) schematic of laser stripping path
    Comparison of laser paint stripping area and binarization. (a) Laser paint stripping area; (b) binarized laser paint stripping area
    Surface morphologies after laser stripping at different laser powers with v=8000 mm/s and f=80 kHz. (a) P=40 W; (b) P=50 W; (c) P=60 W
    Oxygen content after laser stripping at different laser powers
    Laser stripping surface and residual paint layer morphologies and EDS analysis results of base when f=80 kHz, P=50 W, and v=8000 mm/s. (a) SEM morphology; (b) EDS analysis results; (c) residual paint layer morphology of cleaning surface; (d) partial enlargement of residual paint layer
    Laser stripping surface and EDS analysis results when f=80 kHz, P=50 W, and v=4000 mm/s. (a) SEM morphology; (b) EDS analysis results
    Surface roughness for cleaning at different laser powers
    Surface roughness for cleaning at different cleaning speeds
    Effect of pulse frequency on remove rate
    Effect of cleaning speeding on remove rate
    • Table 1. Main chemical constituents of HT250 gray cast iron

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      Table 1. Main chemical constituents of HT250 gray cast iron

      ElementCSiMnSPFe
      Mass fraction /%3.21.790.780.120.08Bal.
    • Table 2. Main technical parameters of laser

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      Table 2. Main technical parameters of laser

      ParameterContent
      Wavelength /nm1064
      Power /W≤100
      Pulse width /ns100
      Frequency /kHz≤100
      Scan speed /(mm·s-1)≤8000
      Spot diameter /mm0.05
      Spot shapeCircle
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    Zhaoheng Guo, Jianzhong Zhou, Xiankai Meng, Qi Sun, Ming Zhu, Jianian Yang, Qiang Fu. Nanosecond-Pulsed-Laser Paint Stripping of HT250 Gray Cast Iron[J]. Chinese Journal of Lasers, 2019, 46(10): 1002012

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    Paper Information

    Category: laser manufacturing

    Received: May. 14, 2019

    Accepted: Jun. 13, 2019

    Published Online: Oct. 25, 2019

    The Author Email: Guo Zhaoheng (320321a0e0p.cdb@sina.cn), Zhou Jianzhong (zhoujz@ujs.edu.cn)

    DOI:10.3788/CJL201946.1002012

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