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Chinese Journal of Lasers, Volume. 51, Issue 24, 2402306(2024)

Effects of Different Process Parameters on Molten‑Pool Radiation Intensity of Laser Powder Bed Fusion

Meng Deng1, Xin Zhou2、*, Xing Cheng3, Ting Zhang4, Xuede Wang2, and Ting Ju1
Author Affiliations
  • 1School of Aeronautics, Chongqing Jiaotong University, Chongqing 400074, China
  • 2Key Laboratory of Airborne Plasma Dynamics, Air Force Engineering University, Xi’an 710038, Shaanxi , China
  • 3Xi’an Aerospace Mechatronics Intelligent Manufacturing Co., Ltd., Xi’an 710100, Shaanxi , China
  • 4School of Future Technology, Xi’an Jiaotong University, Xi’an 710049, Shaanxi , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (17)
    Equations (0)
    References (25)
    Cited By (1)
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    Figures & Tables(17)
    Placement position and process parameters of test samples

    Fig. 1. Placement position and process parameters of test samples

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    Schematic diagram of LPBF molten-pool online monitoring system

    Fig. 2. Schematic diagram of LPBF molten-pool online monitoring system

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    Molten-pool radiation intensity data of the 100th layer

    Fig. 3. Molten-pool radiation intensity data of the 100th layer

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    Drawing idea of relative heat map of radiation intensity data of molten pool

    Fig. 4. Drawing idea of relative heat map of radiation intensity data of molten pool

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    Classification rules of relative heat map

    Fig. 5. Classification rules of relative heat map

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    Deviation integral curves of the 100th, 500th and 800th layers. (a)‒(c) 100th layer; (d)‒(f) 500th layer; (g)‒(i) 800th layer

    Fig. 6. Deviation integral curves of the 100th, 500th and 800th layers. (a)‒(c) 100th layer; (d)‒(f) 500th layer; (g)‒(i) 800th layer

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    Thirty-layer deviation integral curves

    Fig. 7. Thirty-layer deviation integral curves

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    Probability density function curves of the 100th, 500th and 800th layers. (a)‒(c) 100th layer; (d)‒(f) 500th layer; (g)‒(i) 800th layer

    Fig. 8. Probability density function curves of the 100th, 500th and 800th layers. (a)‒(c) 100th layer; (d)‒(f) 500th layer; (g)‒(i) 800th layer

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    Probability density function curves of 30 layers

    Fig. 9. Probability density function curves of 30 layers

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    Relative thermal map of the 100th layer

    Fig. 10. Relative thermal map of the 100th layer

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    Relative thermal maps of 30 layers under the change of scanning spacing

    Fig. 11. Relative thermal maps of 30 layers under the change of scanning spacing

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    Relative thermal maps of 30 layers under the change of scanning speed

    Fig. 12. Relative thermal maps of 30 layers under the change of scanning speed

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    Relative thermal maps of 30 layers under the change of laser power

    Fig. 13. Relative thermal maps of 30 layers under the change of laser power

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    Deviation integral curves (unknown process parameters)

    Fig. 14. Deviation integral curves (unknown process parameters)

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    Probability density function curves (unknown process parameters)

    Fig. 15. Probability density function curves (unknown process parameters)

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    Relative thermal maps (unknown process parameters)

    Fig. 16. Relative thermal maps (unknown process parameters)

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    • Table 1. Comparison of three analytical methods

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      Table 1. Comparison of three analytical methods

      Analytical methodNeed filteringDistinguish the size of laser process parametersReflect the average sizeDistinguish the sample placement positionIdentify abnormal layer
      Deviation integral curve√√
      Probability density function curve√√√√
      Relative thermal map√√√
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    Meng Deng, Xin Zhou, Xing Cheng, Ting Zhang, Xuede Wang, Ting Ju. Effects of Different Process Parameters on Molten‑Pool Radiation Intensity of Laser Powder Bed Fusion[J]. Chinese Journal of Lasers, 2024, 51(24): 2402306

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    Paper Information

    Category: Laser Additive Manufacturing

    Received: Feb. 20, 2024

    Accepted: Apr. 29, 2024

    Published Online: Dec. 6, 2024

    The Author Email: Zhou Xin (dr_zhouxin@126.com)

    DOI:10.3788/CJL240605

    CSTR:32183.14.CJL240605

    Topics

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