stud welding products StudPro 2500, Руководство по эксплуатации

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CD 2301 Order No. BA 92-12-0231A Issue 05.01.10 33
Type of fracture Possible cause Corrective actions
Base material buckling - Correct parameters - none
Fracture in the welding element
above flange
- Correct parameters - none
Fracture in the weld metal - Heat input too low
- Plunging speed too low
- Welding element/base material
combination not suitable
- Increase charging voltage
- Increase plunging speed
- Replace welding element or
workpiece
Backside deformation - Heat input too high
- Pressure too high
- Contact stud welding
not suitable
- Workpiece too thin
- Reduce charging voltage
- Reduce pressure
- Use gap stud welding instead of
contact stud welding
- Adapt thickness of workpiece
Bending Test
5 Stud Welding Procedure
5.8 Checking the Quality of the Weld
INSPECTING THE WELD
Visually inspect the weld. A good weld will result in an all‐around weld, with a small
visible amount of weld surrounding the flange of the stud. Too much splatter and the
weld is too hot, lower the voltage. No splatter and the weld is too cold, increase the
voltage.
If you get weld flash to one side of the stud as opposed to an even amount around
the base of the flange, this is called “arc blow”, and can be solved by repositioning
the ground clamp or using a dual ground clamp.
Proper welded studs can be tested by either torquing or bending the stud. The
welded flange of the stud should stay in place using either method, even though the
threaded portion of the stud breaks. If the base material is very thin, then a full slug,
the diameter of the flange will pull from the base metal for a properly welded stud.
CD Stud Welding Steps
SET-UP AND WELDING
TYPES OF FRACTURES