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Press the torch trigger, gas valve opens, and HF arc ignition
starts; Keep the torch 2~4mm away from the work piece to
ignite the arc. When the arc is ignited the HF stops, and
current rises to the preset value. Welding begins, and it ends
when the preset spot welding time is reached. There is no
current upslope and downslope in spot welding mode.
TIG guides
The recommended size of tungsten to be used can be
selected from the table below
Electrode type
The corresponding relationship between gas nozzle
diameter and electrode diameter
For welder training please visit our Academy
website at
www.wilkinson-welding-academy.com
12
The welding current reference for different electrode diameter
The welding current reference for different electrode diameter
The welding current reference for different electrode diameter
The welding current reference for different electrode diameter
The welding current reference for different electrode diameter
Electrode diameter /mm
1.6
2.0
2.5
3.2
Welding current /A
25-40
40-60
50-80 100-130
Type
Mode
Colour
Thoriated 2%
DC welding of steel, stainless
steel and copper
Red
Ceriated
DC welding of steel, stainless
steel and copper
Grey
Lanthanated
DC welding of steel, stainless
steel and copper
Black
Gas nozzle diameter/mm
Electrode diameter/mm
6.4
0.5
8
1.0
9.5
1.6 or 2.4
11.1
3.2