Checking The Quality Of The Weld; Visual Inspection - HBS C 08 Operating Manual

5.7

Checking the Quality of the Weld

You can check the quality of the weld by means of a visual inspection and a bending
test.
See also actual standards in the appendix "Arc stud welding
of metallic materials", in section irregularities and corrective
actions
5.7.1

Visual Inspection

A visual inspection must be carried out with each welding element.
Condition
Good welded joint
Low spatters around the weld
without outer flaws
The weld pool forms a collar around
the flange of about 1 - 1,5 mm
Cold weld pool
Gap between flange and workpiece
Hot weld pool
Many spatters around the weld
One-sided weld pool
One-sided spatter collar
Weld pool came out on one side
C 08 Order No. BA 92-20-262 Issue 01.03.08
Visual Inspection
Possible cause
- Correct parameters
- Heat input too low
- Plunging speed too low
- No sufficient backing of workpiece
- Heat input too high
- Plunging speed too low
- Arc blow effect
- Unsymmetric ground connection
- Welding gun put at an angle
5 Stud Welding Procedure
5.7 Checking the Quality of the Weld
Corrective actions
- None
- Increase charging voltage
- Adjust plunging speed correctly
- Provide sufficient backing
- Reduce charging voltage
- Increase plunging speed
- Take care for symmetrical ground
connection
- Put welding gun vertically to the workpiece
29