HBS 94-31-412C, Operating Manual, Page: 39 / 62

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10 Preparing the Welding Head
Stud welding with drawn arc under shielding gas
‹
Make sure that you have inserted the pressure spring (order no. 80-10-
400) for the gap welding process and that the toggle switch for solenoid is
set to the ON position .
If not observed, you will obtain poor welding results.
Stud welding units ARC 800 *) / ARC 1550 *)
Material
of welding elements
Diameter of welding elements Welding parameters
Metric KAH 412
PT, UT IT
Lift
in mm
Spring force
in mm
Material of workpiece: Mild steel (suitable for welding)
4.8 (suitable for welding) M3, 3 mm -- 1.0 5
4.8 (suitable for welding) M4, 4 mm -- 1.0 5
4.8 (suitable for welding) M5, 5 mm 5 mm, M3 1.0 5
4.8 (suitable for welding) M6, 6 mm 6 mm, M4 1.0 5
4.8 (suitable for welding) M8, 7.1 mm 7.1 mm, M5 1.5 5
Material of workpiece: Galvanised steel (suitable for welding)
4.8 (suitable for welding) M3, 3 mm -- 1.2 5
4.8 (suitable for welding) M4, 4 mm -- 1.2 5
4.8 (suitable for welding) M5, 5 mm 5 mm, M3 1.4 5
4.8 (suitable for welding) M6, 6 mm 6 mm, M4 1.4 5
4.8 (suitable for welding) M8, 7.1 mm 7.1 mm, M5 2.0 5
Material of workpiece: Alloyed steel (suitable for welding)
A2-50 M3, 3 mm -- 1.0 5
A2-50 M4, 4 mm -- 1.0 5
A2-50 M5, 5 mm 5 mm, M3 1.0 5
A2-50 M6, 6 mm 6 mm, M4 1.0 5
A2-50 M8, 7.1 mm 7.1 mm, M5 1.5 5
*) can only be used with the automatic version