Impact bending test
This test implies that the stud is bent to an angle of at least 60°
or until breakage occurs. This is done by means of hammer
blows or a bending pipe.
The stud
•
must break in the shank, not in the welding area
•
or when welding sheet steels it must come off the sheet
steel, bending a piece of sheet steel at right angles (pull a
weld nugget).
The weld must not show any superficial fissures.
When using alloyed steel and special shapes of studs different
test conditions apply.
For further information see DIN EN ISO 14 555 or DVS
instructions 902.
Tips for stud welding
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