Welding vertical welding operation skills: vertical welding operation is more difficult than the operation of flat welding, under the action of gravity, welding rod melting formed droplets and molten metal in the pool to flow down, which makes the weld forming difficult, weld forming is not as beautiful as the flat welding, for this reason, the movement of the welding strip is very important.Example: vertical butt welding with plate thickness 5mm and no groove.This welding method USES a small diameter electrode, suitable for 3.2mm, current 80-100a (less than the flat welding 10-15%), so that the molten pool volume is small, fast condensation, can prevent molten liquid metal flow;Short arc is used in welding, usually the arc length is not greater than the electrode diameter, and the electrode and the welding piece constitute 60-80 Angle, so that the electric blowing force on the molten pool upward thrust action to hold the molten iron, using the electrode to melt metal to the molten pool transition;The electrode performs Vy motion (that is, the electrode starts the arc at one side of the groove, and then moves the strip to the other side after melting). The strip can be transported in the form of "double sawtooth" and "continuous sawtooth", swinging upward from left to right until the welding of the whole weld is completed.Notes:

1. The three movements of Vx, Vy and Vz should be coordinated to prevent uneven weld penetration.

2. Both sides shall have the same melting width to prevent the occurrence of non-penetration and keep the weld penetration neat.

3, when iron water compress to immediately after the Vx movement, can not stay or slow down the speed.

4, the use of repeated arc termination.