Checking The Quality Of The Weld; Visual Inspection - HBS ONURFIX A 12 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.
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
32
See also actual standards in the appendix "Arc stud welding of
metallic materials", in section irregularities and corrective
actions.
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
Visual Inspection
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
A 12 Order No. BA 93-20-270 Issue 01.03.08