TUNGSTEN ELECTRODE WELDING WITH INERT GAS (TIG MODE)
CONNECTION AND ADVICE
• TIG DC and TID AC welding require gas protection (Argon).
• Connect the earth clamp to the positive connector (+). Connect the torch to the negative plug (–), the trigger cable and the gas hose.
• Make sure that the various components that make up the torch are present (clamp, collar support, diffuser and nozzle) and that they are in good
condition.
• The electrode selection is defined according to the TIG DC or AC welding current..
ELECTRODE SHARPENING
For optimal operation, it is recommended to use a sharpened electrode as follows:
a = Ø 0.5 mm
L = 3 x d for a low current.
L = d for a high current
CHOICE OF ELECTRODE DIAMETER
Ø Electrode
(mm)
TIG DC
TIG AC
Pure tungsten
Tungsten with oxides
Pure tungsten
Tungsten with oxides
1
10 > 75 A
10 > 75 A
15 > 55 A
10 > 70 A
1.6
60 > 150 A
60 > 150 A
45 > 90 A
60 > 125 A
2
75 > 180 A
100 > 200 A
65 > 125 A
85 > 160 A
2.5
130 > 230 A
170 > 250 A
80 > 140 A
120 > 210 A
3.2
160 > 310 A
225 > 330 A
150 > 190 A
150 > 250 A
4
275 > 450 A
350 > 480 A
180 > 260 A
240 > 350 A
~ 80 A per mm de Ø
~ 60 A per mm de Ø
CHOICE OF THE TYPE OF IGNITION
TIG HF: non-contact high-frequency ignition of the tungsten electrode on the workpiece.
TIG LIFT : Arcing by contact (for environments where HF is not desirable).
1. Place the torch in the welding position above the part (distance of about
2-3 mm between the electrode tip and the part).
2. Press the the torch trigger (the arc starts without contact using High
Frequency impulsions).
3.The initial welding current flows, the weld will be
continues according to the welding cycle.
1. Position the torch nozzle and the electrode tip on the workpiece and press
the torch button.
2. Tilt the torch until the electrode tip is about 2-3 mm away from the work
-
piece. The arc starts.
3. Return the torch to the normal position to start the welding cycle.
TIG PROCESS SETTINGS
• TIG DC is dedicated to the welding of ferrous metals such as steel, stainless steel but also copper and its alloys, titanium.
• TIG AC is dedicated to the welding of aluminium and its alloys.
TIG DC WELDING
•
TIG DC - Standard
The TIG DC Standard welding process allows high quality welding on most ferrous materials such as steel, stainless steel, but also copper and its
alloys, titanium... The many possibilities of current and gas management allow you to perfectly control your welding operation, from the ignition to
the final cooling of your bead.
•
TIG DC - Pulse
This pulsed current welding mode is a combination of high current pulses (I, welding pulse) and low current pulses (I_Cold, part cooling pulse). This
pulse mode allows to assemble pieces while while keeping the machine cooler. It is particularly recommended for assembling thin parts.
(e. g. : The welding current I is set to 100A and % (I_Cold) = 50%, i.e. a cold current = 50% x 100A = 50A. F(Hz) is set to 10 Hz, the signal period
will be 1/10 Hz = 100 ms. Every 100ms, a 100A pulse then a 50A pulse will succeed each other.
24
EN
Translation of the original instructions
PROTIG 201 AC/DC - 201L AC/DC
