Page 6
2-4.
Arc Stud Welding System
Y
Turn off power before connecting
to weld output terminals.
6
Power Source
Constant Current (CC)
7
Ground Cable and Clamp
8
Stud Gun (Negative)
9
Workpiece (Positive)
10 Weld Cable to Gun
11 Control Cable
804 157-A
1
3
5
4
2
6
2-5.
Power Source
The typical power source for stud welding should have the following characteristics:
D
Constant Current (CC)
D
Open circuit voltage range of 70-100 VDC
D
Rapid current rise time
D
High current output for relatively short time periods
Arc stud welding is a very fast weld done at high amperage. The weld requires the rise to peak current within millisec-
onds. However, because the weld time is very short typical duty cycles are very low.
.
Some non-current stud welding power sources may use an external device for setting amperage and time require-
ments.
2-6.
Stud Welding Controls
The control circuit of an arc stud welding system regulates arc duration through the welding cycle and provides adjust-
able controls for various stud diameters.
A control circuit consists of a contactor, timing device, and current control. The weld time is a percentage of seconds or
milliseconds, the current is typically depicted as amperage.
Weld time is determined by stud diameter.
