HBS CDi 1502 - Page 23

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9 Welding Process
– Heat is generated and melts the tip of the welding element together with an area
of the workpiece of approx. the same size (see gure, position 3).
– As soon as the welding element touches the workpiece, the arc extinguishes (see
gure, position 4).
With high plunging speed, the gap closes faster after evaporation of
the ignition tip and welding time (arc burn time) is reduced.
– Now capacitors are short-circuited and remaining energy is owing off.
– The pressure spring continues to press the welding element into the weld pool.
– The weld pool solidies and the welding element is rmly xed to the workpiece.
– Time between ignition of the arc and solidication of the weld pool is about 3 ms.