The stud is inserted into the chuck and - if necessary - equipped with a ceramic ferrule.
The stud is placed onto the work piece.
A lift mechanism in the welding gun or welding head lifts the stud. A secondary arc (pilot arc) of low current is ignited between stud tip and work piece.
Then the ignition of the main arc is carried out between stud tip and work piece.
Stud and work piece are melted.
At the end of the adjusted welding time the stud is moved to the work piece, the two molten zones join. The power source is switched off, the weld pool solidifies and cools down.