192
7 Keyhole and Weld Pool Dynamics in Dual-Beam Laser Welding
Keyhole depth/mm)
Keyhole depth/mm)
Time/ms
Time/ms
Fig. 7.7 Oscillation curves of keyhole depth between 45 and 55 ms in dual beam laser welding
with two different speeds
Keyhole depth/mm)
Keyhole depth/mm)
Time/ms
Time/ms
Single beam laser welding speed
U = 3.81 m/min
Single beam laser welding speed
U = 3.81 m/min
Fig. 7.8 Evolution curves of keyhole depth in single beam laser welding
Keyhole depth/mm)
Keyhole depth/mm)
Time/ms
Time/ms
Front keyhole
Rear keyhole
Front keyhole
Rear keyhole
Fig. 7.9 Evolution curves of keyhole depth in dual beam laser welding