Vertical welding is divided into overhead welding and vertical welding, and the different parameters of these two welding methods are different;

The penetration depth of vertical welding is large, and the welding formation is slightly poor, but the welding reliability is good;

The depth of vertical downward welding is beautiful, but it is easy to have poor fusion before introducing molten iron.

3mm steel plate lap welding, the weld height should not exceed too much, so the welding current should not be too large. In vertical welding, the current is about 90~ 1 10A and the voltage is18 ~ 21v.

When welding vertically downward, the current and voltage can be larger, the weld shape is much more beautiful than that of upward welding, and the welding speed is much higher than that of upward welding.