Orbital TIG multipass welding with AXXAIR's AVC/OSC device

Besides open and closed welding heads, AXXAIR's orbital welding offer incorporates a unique and
atypical orbital welding machine for prefabrication.
It is an axial loading machine which involves
being able to pull out the tube as well as the
welded accessory.
These machines that use standard AXXAIR's cutting and
beveling frames have the advantage of being
very robust and easy to use.
In fact, the SX range is mainly intended for
workshop or building site prefabrication use.
They are also used to carry out
repeatable production welding on suitable
elements and can be equipped with either
an air-cooled torch or a water-cooled torch,
with or without filler metal.

AVC / OSC device

- AVC
Motorised Arc Voltage Control is often abbreviated
to AVC. Arc voltage is directly linked to
the distance between the tube to be welded
and the electrode. In other words, this option
ensures the correct tube-electrode distance is
maintained electronically during welding.

- Fusion + OSC + wire: This welding method combines AVC movement
with oscillation of the torch and wire. This
method is used for multi-pass welding of thick walled tubes and pipes.
Torch oscillation is where the electrode is
swung left and right in a linear motion so that
each side of the joint can be kept liquid as welding
progresses.
Oscillation brings an improvement in the number
of passes, and therefore significantly improves
productivity.
This system, when combined with AVC, is the
only effective way of filling a tulip joint in multi-
pass orbital TIG welding.

More information here: https://www.axxair.com/thick-tubes-pr...

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