Journals Articles Conferences News About CLP
Submit a paper Email Alert
Search
Search
Articles
Journals
News
Advanced Search
Top Searches
2D MaterialsTransformation opticsQuantum PhotonicsSmall lasersSemiconductor UV PhotonicsSupersymmetric microring laser arrays

Infrared and Laser Engineering, Volume. 52, Issue 7, 20220130(2023)

Effect of laser spot size on the behavior of molten pool and keyhole in laser welding

Jin Peng1,2,3, Hongqiao Xu1, Yongbiao Wang4, Xingxing Wang1, Yongzhen Zhang2, Weimin Long3, and Dingyu Zhang1
Author Affiliations
  • 1Henan International Joint Laboratory of High-efficiency Special Green Welding, Material College, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
  • 2National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang 471023, China
  • 3China Academy of Machinery Ningbo Academyof Intelligent Machine Tool Co., Ltd., Ningbo 315700, China
  • 4Henan Key Laboratory of Mechanical Equipment Intelligent Manufacturing, Zhengzhou Light Industry University, Zhengzhou 450002, China
    • show less
    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
    Equations (17)
    References (15)
    Tools
    Paper Information
    Topics
    Figures & Tables(12)
    Calculation domain of laser welding

    Fig. 1. Calculation domain of laser welding

    Download full size
    View in Article
    Three dimensional transient behavior with laser spot radius of 0.1 mm. (a)t ms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Fig. 2. Three dimensional transient behavior with laser spot radius of 0.1 mm. (a)t ms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Download full size
    View in Article
    Three dimensional transient behavior with laser spot radius of 0.15 mm. (a) tms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e)t+4.1 ms

    Fig. 3. Three dimensional transient behavior with laser spot radius of 0.15 mm. (a) tms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e)t+4.1 ms

    Download full size
    View in Article
    Three dimensional transient behavior with laser spot radius of 0.2 mm. (a)t ms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Fig. 4. Three dimensional transient behavior with laser spot radius of 0.2 mm. (a)t ms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Download full size
    View in Article
    Flow field of molten pool with laser spot radius of 0.1 mm. (a) t ms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Fig. 5. Flow field of molten pool with laser spot radius of 0.1 mm. (a) t ms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Download full size
    View in Article
    Flow field of molten pool with laser spot radius of 0.15 mm. (a) t ms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Fig. 6. Flow field of molten pool with laser spot radius of 0.15 mm. (a) t ms; (b) t+3.5 ms; (c) t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Download full size
    View in Article
    Flow field of molten pool with laser spot radius of 0.2 mm. (a)t ms; (b) t+3.5 ms; (c)t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Fig. 7. Flow field of molten pool with laser spot radius of 0.2 mm. (a)t ms; (b) t+3.5 ms; (c)t+3.8 ms; (d) t+3.9 ms; (e) t+4.1 ms

    Download full size
    View in Article
    Maximum flow velocity of molten pool under different spot radius

    Fig. 8. Maximum flow velocity of molten pool under different spot radius

    Download full size
    View in Article
    Surface length of molten pool under different spot radius

    Fig. 9. Surface length of molten pool under different spot radius

    Download full size
    View in Article
    Schematic diagram of gasification and vapour flow behavior on the wall of the keyhole

    Fig. 10. Schematic diagram of gasification and vapour flow behavior on the wall of the keyhole

    Download full size
    View in Article
    Experimental weld pool image and numerical simulation weld pool image

    Fig. 11. Experimental weld pool image and numerical simulation weld pool image

    Download full size
    View in Article

    • Table 1. Thermal physical properties of 6056 aluminum alloy

      View table
      View in Article

      Table 1. Thermal physical properties of 6056 aluminum alloy

      Physical quantitySymbolNumerical value
      Solid density$ {\rho _s} $2720
      Liquid density$ {\rho _l} $2590
      Solidus temperature$ {T_s} $860
      liquidus line emperature$ {T_L} $917
      Gas line temperature$ {T_v} $2740
      Latent heat of fusion$ {L_m} $$ 3.87 \times {10^{ 5}} $
      Latent heat of vaporization$ {L_v} $$ 1.08\times{10^{ - 7}} $
      Thermal expansion coefficient$ {\beta _k} $$ 1.92 \times {10^{ - 5}} $
      Heat transfer coefficient$ {h_c} $15
      Surface tension at 930 K$ \delta $0.914
      Surface tension gradient coefficient${\rm{d}}\delta /{\rm{d}}T$$ - 3.5 \times {10^{ - 4}} $
      Emissivity$ \varepsilon $0.08
      Ambient temperature$ {T_{ref}} $300
    Tools

    Get Citation

    Copy Citation Text

    Jin Peng, Hongqiao Xu, Yongbiao Wang, Xingxing Wang, Yongzhen Zhang, Weimin Long, Dingyu Zhang. Effect of laser spot size on the behavior of molten pool and keyhole in laser welding[J]. Infrared and Laser Engineering, 2023, 52(7): 20220130

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Set citation alerts for article
    Save article for my favorites
    Paper Information

    Category: Lasers & Laser optics

    Received: Feb. 27, 2022

    Accepted: --

    Published Online: Aug. 16, 2023

    The Author Email:

    DOI:10.3788/IRLA20220130

    Topics

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