HBS 93-66-2201, Operating Manual, Page: 29 / 70

IT 2002 Order No BA 93-66-2201 Issue 01.06.08 29
5.2.4 Drawn-Arc Capacitor-Discharge Stud Welding
With drawn-arc capacitor-discharge stud welding, the welding energy is taken from a
capacitor. As a result, welding currents are very high and welding times (< 10 ms) very
short. Normally, a weld pool protection is not required. The process is mainly used for
welding elements in a diameter range of up to 8 mm.
5.3 Welding Preparation
Read the safety instructions in chapters 1, 3 and 5.
Observe the workplace requirements (chapter 3, ”Starting-up").
Check all cables and connections for proper condition.
Replace immediately defective cables and cable connections to avoid electrical
shocks.
Check the chuck for proper seat (see operating manual of according welding
gun).
Before welding, make sure that the bellows are checked for damage and proper
seat.
5.4 High-strength Welds
The following must be removed both from the weld zone and the ground clamp
connection areas:
– paint, oil and any other impurities,
– rust,
– non-conductive coatings from surface treated workpieces.
Weld to smooth and flat surfaces only.
For welding to pipes or punched plates consult our responsible
application manager (address of customer service see page ii).