6. Before starting the equipment
6.1 Assembly and connection (Fig. 3-7)
Please note that the appropriate gas for the
material you wish to weld must be used.
Steel (Fe) = ArCO2
Aluminum (Al) = Ar
(not supported by this equipment)
Stainless steel (V2A) = ArO2
Assemble the welding torch as shown in Figure 3.
6.2 Connecting the shielding gas hose
Place the two hose clips (13) over the shielding gas
hose (12). Connect the shielding gas hose (12) to the
shielding gas hose connection on the pressure
reducer and gas supply connector on the welding set
and secure it to both connectors using the hose clips
(13).
Before you start welding, the tungsten needle must
be sharpened. Which tungsten needle should be
used with which welding current is shown in the table
below:
Electrode (tungsten needle)
diameter (mm)
Welding current (A)
1.6
20 – 150
2.0
100 – 160
2.4
150 – 160
When you insert the tungsten needle, please note
that it should project around 5 mm out of the ceramic
nozzle.
Please note that you must use a clamping sleeve (9)
which is suitable for the electrode diameter. The
diameter of the ceramic nozzle (3) should be
selected to suit the welding current, the workpiece
thickness, the electrode thickness and the gas
delivery rate. The smaller these values are, the
smaller the diameter of the ceramic nozzle (3) should
be. Thicker tungsten electrodes (10) should be used
for thick workpieces and high welding currents. This
hose package is suitable for using tungsten
electrodes (10) with diameters from 1.6 to 2.4 mm.
For welding points with difficult access and
correspondingly short tungsten electrodes (10), the
short protective cap (11) rather than the long
protective cap (2) can be screwed on to the rear of
the handle (5).
Important.
Please note that for TIG welding, the
cable with the
ground terminal
(9)
must be connected to the
positive pole
(5) and the
TIG equipment to the
negative pole
(6).
Connect the quick-release connector plug (6) to the
negative pole on your welding set and connect the
gas connector (7) to the corresponding connector on
your welding set (Fig. 5).
If your welding set does not have a shielding gas
connector, the gas connector (7) can also be
connected straight to the gas bottle using a pressure
reducer.
Use the adapter (14).
7. Operation
Refer to the instructions in the operating manual for
your welding set. Find the ideal settings using a test
workpiece.
Set the gas delivery rate (depending on the welding
current, electrode diameter and the workpiece
thickness) so that a uniform arc can be achieved
(approx. 5 – 15 l/min). Make an initial rough setting
on the pressure reducer on the gas bottle and then
set the precise delivery rate using the rotary valve for
the gas delivery rate (4).
When all the required settings have been made on
the welding set and all the connections have been
made, proceed as follows:
To ignite the torch now place the ceramic nozzle at
an angle to the material you wish to weld and guide
the tungsten needle over the material using even,
rocking movements until an arc is generated.
Maintain a constant distance to the workpiece for
welding (approx. 1 to 1.5 times the electrode
diameter). Put the welding torch and the ground
terminal on an insulated surface when you have
finished the welding.
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Anl_Schweissbrenner_Set_SPK7:_ 12.08.2011 8:36 Uhr Seite 10
