6.4 Influences of Side-Blown Gas on the Stability of the Keyhole and Weld Pool
179
t=t0+1.6ms
t=t0+1.7ms
t=t0+1.8ms
t=t0+1.9ms
t=t0+2ms
t=t0+2.1ms
t=t0+2.2ms
t=t0+2.3ms
t=t0+2.4ms
t=t0+2.5ms
t=t0+2.6ms
t=t0+2.7ms
t=t0+0.8 ms
t=t0+0.9 ms
t=t0+1 ms
t=t0+1.1ms
t=t0+1.2ms
t=t0+1.3ms
t=t0+1.4ms
t=t0+1.5ms
Fig. 6.16 Calculation results of transient behavior of keyhole and weld pool without auxiliary gas
(metallic vapor inside keyhole considered)
Fig. 6.17 Variation of
average pressure of keyhole
(metallic vapor inside
keyhole considered)
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
1.0x10
5
1.1x10
5
1.1x10
5
1.1x10
5
1.2x10
5
106391 Pa
103225 Pa
109155 Pa
123140 Pa
108200 Pa
107044 Pa
Average static pressure / Pa
Time / ms
Without side gas
With side gas
105222
Pa
Without side-blown gas
With side-blown gas