7.4 Mechanism and Influencing Factors of Stability of Dual-Beam Welding
195
single beam welding process, is not only due to the degassing effect, but also the
combined action of the above-mentioned factors.
7.4.2 Influence of Process Parameters on Stability
of Dual-Beam Welding
7.4.2.1 Influence of Welding Speed on the Evolution Process of Keyhole
Shape
Figure 7.12 shows the keyhole shape in parallel dual beam welding with different
welding speeds at 35 ms. According to the figure, at the current welding speeds,
the keyhole shape is very irregular, and protrusions are generated in many places
on the wall surface of the keyhole. Figure 7.13 shows the variation curve of the
keyhole depth with the above-mentioned welding speeds at 35 ms. At this point, the
Temperature T/K
Fig. 7.12 Shape of keyhole in parallel dual beam welding with different welding speeds at 35 ms
Fig. 7.13 Curve of the
keyhole with different
welding speeds at 35 ms
Keyhole depth
δ/mm
Welding speed v / (m·min-1)
195
single beam welding process, is not only due to the degassing effect, but also the
combined action of the above-mentioned factors.
7.4.2 Influence of Process Parameters on Stability
of Dual-Beam Welding
7.4.2.1 Influence of Welding Speed on the Evolution Process of Keyhole
Shape
Figure 7.12 shows the keyhole shape in parallel dual beam welding with different
welding speeds at 35 ms. According to the figure, at the current welding speeds,
the keyhole shape is very irregular, and protrusions are generated in many places
on the wall surface of the keyhole. Figure 7.13 shows the variation curve of the
keyhole depth with the above-mentioned welding speeds at 35 ms. At this point, the
Temperature T/K
Fig. 7.12 Shape of keyhole in parallel dual beam welding with different welding speeds at 35 ms
Fig. 7.13 Curve of the
keyhole with different
welding speeds at 35 ms
Keyhole depth
δ/mm
Welding speed v / (m·min-1)