Le Zhao, Xue Han, Jianglin Zou, Kai Zheng, Rongshi Xiao, Qiang Wu. Research on Formation Process of Keyhole During Fiber Laser Deep Penetration Welding[J]. Laser & Optoelectronics Progress, 2020, 57(7): 071402
- Laser & Optoelectronics Progress
- Vol. 57, Issue 7, 071402 (2020)
Fig. 1. Experimental device. (a) Schematic diagram of modulation light-out; (b) schematic diagram of planar scanning welding
Fig. 2. Change chart of output orifice during 1-20 ms
Fig. 3. Change curve of output orifice during 1-20 ms
Fig. 4. Effect of light-out time on pore/depth
Fig. 5. Variation of hole depth/penetration with light-out time under different laser powers
Fig. 6. Variation of hole depth/penetration with light-out time at different velocities
Fig. 7. Variation of hole depth/penetration with light-out time under different defocusing amounts
Fig. 8. Surface of low carbon steel weld by plate scanning welding
Fig. 9. Metallogram of longitudinal cutting at the initial position of weld
Fig. 10. Stable penetration formation time and characteristic action time at different velocities
Fig. 11. Stable penetration formation time and characteristic action time for different powers
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