18
Tig tungsten size / amperage guide
All values below are based on using pure argon shielding gas. Other current values may be
employed depending on the shielding gas and application
ELECTRODE
RATINGS
Electrode Diameter (mm)
2% Thoriated on DC
(amps)
Red Tip – Grind to point
Pure Tungsten on DC
(amps)
Zirconiated 0.8% Tungsten
on AC (amps)
White Tip – No need to grind
1.0mm / 0.040”
5 - 80
30
20 - 60
1.6mm / 1/16”
40- 150
80
40 - 100
2.4 mm/ 3/32”
140 - 250
130
80 - 180
3.2mm / 1/8”
240 - 400
180
160 - 250
4.0mm / 5/32”
380- 500
240
220 - 320
4.8mm / 3/16”
500- 750
300
280 - 390
6.4mm / 1/4”
750 - 1000
400
360 - 525
Welding in STICK MMA (SMAW) Mode
1. Fit MMA electrode holder to machine
2. Fit earth lead to machine and to work piece
3. Select MMA on MMA/TIG switch
4. Select DC or AC (DC is most commonly used)
5. Place electrode in holder
6. Select desired welding base current
7. Select desired Arc Force
8. Strike arc and weld
WARNING!
ELECTRIC SHOCK CAN KILL
When machine is switched to MMA mode, output terminals are always live, take care and do not
touch electrode and earth by person at same time, otherwise electric shock will occur.
The foot pedal has no affect on welding current in MMA mode and the gas flow and high frequency
starting circuit is disabled.
Summary of Contents for TIG315
Page 1: ...TIG315 AC DC TIG WELDER OPERATION INSTRUCTIONS www r techwelding co uk...
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