Contract Connections Ltd is the leader in the specialised field
of STUDWELDING in all forms.
We stock and supply all forms of fasteners
and machines for all applications from Insulation Pins, Threaded 4mm-24mm
Studs, Headed Concrete Anchors and Hand or Machine welded Refractory Anchors.
We also have machines available for sale or hire
CAPACITOR DISCHARGE STUDWELDING
Discharge (CD) Stud Welding involves the same basic principles and
metallurgical aspects as any other arc welding procedure. When the
weld gun is activated, a special precision weld tip initiates a controlled
electric arc from the welder capacitor bank which melts the end of
the stud and a portion of the base metal. The stud is held in place
as the molten metal solidifies instantly accomplishing a high quality
fusion weld where the weld is stronger than the stud itself. CD Stud
Welding is generally used to weld smaller diameter studs to thin base
metals, especially where reverse side marking is not permissable.
Since the entire weld cycle is completed in milliseconds, welds can
be made to thin material without pronounced distortion, burn through
or reverse side discolouration.
DRAWN ARC STUDWELDING
stud welding is the most common type of stud welding used throughout
New Zealand and the world. Arc stud welding also has the advantage
of allowing studs to be fixed into inside angles for embedment plates.
Arc stud welding involves the same basic principles and metallurgical
aspects as any other arc welding procedure. The weld gun lifts the
stud a short distance from the base metal and initiates a controlled
electric arc from the power source which melts the end of the stud
and a portion of the base metal. The ceramic ferrule contains the
molten metal into which the stud is thrust automatically and a high
quality fusion weld is accomplished where the weld is stronger than
the stud itself. Arc stud welding is generally used to weld larger
diameter studs to thick base metals.