Source of Electric Supply for Arc Welding | Methods | Welding | Metallurgy
The current and voltage requirements during arc welding process vary considerably. In arc welding, short circuits keep on taking place frequently. For example, whenever the operator touches the electrode to the work in order to strike an arc, short circuit is created. Similarly when the molten globules of weld metal cross the arc, electric short circuits (around 20 nos. per [...]