ESAB Aristotig 405 AC/DC Instruction Manual page 17

GB
TIG four-stroke welding process
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1. The gas pre-flow time has an internal fixed default value.
2. Set ignition current I1 using the rotary switch (25).
3. Set Up-Slope using the rotary switch (9), at maximum (I2=400A) a ramp time of 10s
is obtained. The ramp time is dependant on the set welding current I2.
4. Set welding current I2 using the rotary switch (27).
5. Set Down-Slope using the rotary switch (14), at maximum (I2=400A) a ramp time of
10s is obtained. The ramp time is dependant on the set welding current I2.
6. Set final current I3 using the rotary switch (30)
7. Set gas post-flow time using the rotary switch (17) 0.2–30 s.
5.7.1.3 TIG two-stroke welding
Step 1: By pressing the torch switch the gas flows for the preset time and the ARC ignites
at a current level set by rotary switch I1 (25).
After a fixed time the current rises at a rate set by the up-slope control (9) to the
welding current value set by the rotary switch I2 (27).
Step 2: By releasing the torch button, the current slopes down to the set final current
in the time set using the rotary switch Down-Slope. Afterwards, the arc
extinguishes and the gas post-flow time runs off.
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