A welding stud is first
pushed into the chuck of the welding gun. The gun is then placed down
vertically on the workpiece with all positioning feet. When the start
button is pressed, the welding element is lifted by a hoisting magnet
against a pressure spring. When the end position is reached, the hoisting
magnet is switched off and the welding current switched on. The welding
element is then moved into the direction of the workpiece by the pressure
spring.When the ignition tip hits the surface, a large discharging current
flows. This evaporates the ignition tip and an arc is generated, which
melts the face of the stud and an approximately equally large area on the
workpiece. The welding element then dips into the weld pool, the arc is
extinguished and the weld pool solidifies. This welding process lasts
about 1 to 2.5 ms. The welding gun can be pulled off the welding element
vertically directly afterwards and fitted with a new one.
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