空间焊接位置对熔滴过渡的影响

hrough the arc high-speed camera system, the images of molten droplet transfer process were acquired respectively at flat position, upside 45 downhill position, vertical-down position, underside 45 downhill position and over-head position welding, and then the characteristics of molten droplet transfer were investigated for the different spatial welding positions. Experimental results show that, by simulating spatial welding positions, the images of droplet transfer process can be obtained clearly at different positions. With the change of welding positions from flat position to over-head one, the gravity on droplet transfer functions gradually from promotion to hindrance, obviously at the flat and over-head welding positions; accordingly, the transfer frequency of molten droplet decreases, and average droplet sectional area increases. In addition, at upside 45 downhill position, vertical-down position and underside 45 downhill position, the droplets drop to the molten pool always at some angles.