Gtaw (Tig) Welding - Weldtronic TM250C Operating Manual

3.3 GTAW (TIG) Welding


Connect the TIG torch leads as detailed above. Ensure that a suitable inert gas supply is
connected.

Switch the power switch on the back panel to "ON"

Select the TIG welding mode using the selector switch.

There is voltage output at both output terminals.

After the parameters are set appropriately, open the gas valve of the cylinder, the gas valve on the
torch and adjust the gas regulator to obtain the desired flow rate.

The arc will start when the tungsten electrode touches the work piece and is lifted off after
touching by between 2-4mm

The arc will cease when the electrode (torch) is moved away from the work area
TIG guides
The recommended size of tungsten/nozzle to be used can be selected from the table below
Electrode
Diameter(mm) Current(A)
1.0
1.6
Electrode type
Type
Thoriated 2%
Ceriated
Lanthanated 1.5%
TitanMig AU 250C Manual_ Issue A 0415
Welding Gas Nozzle
Diameter (mm)
15-80 8.0
70-150 9.5
DC welding of steel, stainless steel and copper
DC welding of steel, stainless steel and copper
DC welding of steel, stainless steel and copper
Insert the cable plug with the work clamp into the "+"
socket on the front panel of the welding machine, and
tighten it clockwise.
Insert the cables plug of the TIG torch into the "-" socket on
the front panel of the machine and tighten clockwise.
Connect the gas hose to the regulator / flowmeter located
on the shield gas cylinder.
Open the valve on the TIG torch and "scratch" the
electrode on the work piece to start the arc
Electrode
Diameter(mm)
2.4
3.2
Mode
Welding Gas Nozzle
Current(A) Diameter(mm)
150-250
250-400 11.0
Colour
Red
Grey
Gold
9.5
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