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4.4 Welding problems and resolution
The phenomenon listed below may happen due to relevant accessories used, welding material,
surroundings and power supply. Pleas improve surroundings and avoid these problems..
Arc starting difficulty. Arc interruption happens easily:
a) Examine whether grounding wire clamp contacts with the work pieces well.
b) Examine whether each joint has improper contact.
The output current fails to reach rated value:
The deviation of power voltage from rated value may cause that the output current does no
accord with adjusted value. When the power voltage is lower than rated value, the
maximum output current may be lower than rated value.
The current can not keep stable during operation:
This situation may relate to the following factors:
a) The voltage of electric power network changes;
b) Serious interference from electric power network or other electric facilities.
Gas vent in welds:
a) Examine whether the gas supply circuit has leakage.
b) Examine whether there is sundries such as oil, dirt, rust, paint etc. on the surface.
