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Chinese Journal of Lasers, Volume. 49, Issue 22, 2202020(2022)

Femtosecond Laser Single-step and Three-step Trepanning Drilling Technology of Aluminum Alloy

Yunpeng Ren1、*, Li Cheng1, Wangfan Zhou1, Yan Chen2, Kun He1, Xincheng Tu1, Yunxia Ye1, and Naifei Ren1
Author Affiliations
  • 1School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
  • 2School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (36)
    Cited By (3)
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    Schematic of laser processing optical path

    Fig. 1. Schematic of laser processing optical path

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    Schematics of laser scanning path and taper measurement method. (a) Single-step trepanning drilling; (b) three-step trepanning drilling; (c) taper measurement method

    Fig. 2. Schematics of laser scanning path and taper measurement method. (a) Single-step trepanning drilling; (b) three-step trepanning drilling; (c) taper measurement method

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    Schematics of laser trepanning drilling method. (a1)－(a3) Single-step trepanning drilling; (b1)－(b3) three-step trepanning drilling

    Fig. 3. Schematics of laser trepanning drilling method. (a1)－(a3) Single-step trepanning drilling; (b1)－(b3) three-step trepanning drilling

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    Entrance and exit morphologies of microholes processed by single-step trepanning drilling method under different repetition rates and influence of repetition rate on pore size and taper. (a1)－(a5) Morphologies of entrance; (b1)－(b5) morphologies of exit; (c) influence of repetition rate on pore size and taper

    Fig. 4. Entrance and exit morphologies of microholes processed by single-step trepanning drilling method under different repetition rates and influence of repetition rate on pore size and taper. (a1)－(a5) Morphologies of entrance; (b1)－(b5) morphologies of exit; (c) influence of repetition rate on pore size and taper

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    Entrance and exit morphologies of microholes processed by single-step trepanning drilling method under different scanning times and influence of scanning time on pore size and taper. (a1)－(a5) Morphologies of entrance; (b1)－(b5) morphologies of exit; (c) influence of scanning time on pore size and taper

    Fig. 5. Entrance and exit morphologies of microholes processed by single-step trepanning drilling method under different scanning times and influence of scanning time on pore size and taper. (a1)－(a5) Morphologies of entrance; (b1)－(b5) morphologies of exit; (c) influence of scanning time on pore size and taper

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    Entrance and exit morphologies of microholes processed by single-step trepanning drilling method under different feed times and influence of feed time on pore size and taper. (a1)－(a5) Morphologies of entrance; (b1)－(b5) morphologies of exit; (c) influence of feed time on pore size and taper

    Fig. 6. Entrance and exit morphologies of microholes processed by single-step trepanning drilling method under different feed times and influence of feed time on pore size and taper. (a1)－(a5) Morphologies of entrance; (b1)－(b5) morphologies of exit; (c) influence of feed time on pore size and taper

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    Entrance and exit morphologies of microholes processed by single-step trepanning drilling method under different scanning speeds and influence of scanning speed on pore size and taper. (a1)－(a5) Morphologies of entrance; (b1)－(b5) morphologies of exit; (c) influence of scanning speed on pore size and taper

    Fig. 7. Entrance and exit morphologies of microholes processed by single-step trepanning drilling method under different scanning speeds and influence of scanning speed on pore size and taper. (a1)－(a5) Morphologies of entrance; (b1)－(b5) morphologies of exit; (c) influence of scanning speed on pore size and taper

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    Comparison of entrance and exit morphologies, pore sizes, and tapers of microholes processed by single-step trepanning drilling method and three-step trepanning drilling method. (a) Feeding 20 times, single-step trepanning drilling; (b) feeding 20 times, three-step trepanning drilling; (c) feeding 40 times, single-step trepanning drilling; (d) feeding 40 times, three-step trepanning drilling; (e) pore size and taper

    Fig. 8. Comparison of entrance and exit morphologies, pore sizes, and tapers of microholes processed by single-step trepanning drilling method and three-step trepanning drilling method. (a) Feeding 20 times, single-step trepanning drilling; (b) feeding 20 times, three-step trepanning drilling; (c) feeding 40 times, single-step trepanning drilling; (d) feeding 40 times, three-step trepanning drilling; (e) pore size and taper

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    Spatters at entrances of microholes processed by single-step trepanning drilling method and three-step trepanning drilling method. (a1)(a2) Single-step trepanning drilling; (b1)(b2) three-step trepanning drilling

    Fig. 9. Spatters at entrances of microholes processed by single-step trepanning drilling method and three-step trepanning drilling method. (a1)(a2) Single-step trepanning drilling; (b1)(b2) three-step trepanning drilling

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    • Table 1. Main parameters of femtosecond fiber laser

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      Table 1. Main parameters of femtosecond fiber laser

      ParameterPowerWavelengthPulse durationFrequencyMaximum pulse energyFocus spot diameterBeam qualityBeam mode
      Content80 W1030 nm270 fs－10 ps50 kHz－19 MHz160 μJ30 μmM2<1.3TE00 Gaussian mode

    • Table 2. Chemical compositions of 1060 aluminum alloy

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      Table 2. Chemical compositions of 1060 aluminum alloy

      Chemical compositionZnTiVMnSiFeCuMgAl
      Mass fraction /%0.050.030.050.030.250.350.050.03Bal.

    • Table 3. Processing time of single microhole by single-step trepanning drilling method and three-step trepanning drilling method under different feeding times

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      Table 3. Processing time of single microhole by single-step trepanning drilling method and three-step trepanning drilling method under different feeding times

      Feed time510204060
      Single-step163058115172
      Three-step163160119178
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    Yunpeng Ren, Li Cheng, Wangfan Zhou, Yan Chen, Kun He, Xincheng Tu, Yunxia Ye, Naifei Ren. Femtosecond Laser Single-step and Three-step Trepanning Drilling Technology of Aluminum Alloy[J]. Chinese Journal of Lasers, 2022, 49(22): 2202020

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    Paper Information

    Category: laser manufacturing

    Received: Apr. 24, 2022

    Accepted: Jun. 9, 2022

    Published Online: Nov. 9, 2022

    The Author Email: Yunpeng Ren (renyp@ujs.edu.cn)

    DOI:10.3788/CJL202249.2202020

    Topics

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