Design and function
Organising welding tasks (Mode "JOB Manager")
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5.20.7 spotArc
This process is suitable for tack welding or joint welding of metal sheets made from steel and CrNi alloys
up to a thickness of approximately 2.5 mm. Metal sheets of different thicknesses can also be welded on
top of one another. As this is a one-sided process, it is also possible to weld metal sheets onto tubular
sections such as round or square pipes. In arc spot welding, the arc melts through the upper metal sheet
and the lower metal sheet is melted onto it. This produces flat, fine-textured welding tacks which require
little or no post weld work, even in visible areas.
The spot welding operating modes (spotArc/Spotmatic) can be used with two different intervals, i.e. a
"long" or "short" interval, which are defined as follows:
Interval Setting
range
Up-/down-slope
Pulsing AC Display
Display
Long
0.01–20.0 s (10 ms)
Yes
Yes
Yes
Short
5–999 ms (1 ms)
No
No
No
When selecting the spotArc operating mode, the long interval is automatically preselected. When
selecting the Spotmatic operating mode, the short interval is automatically preselected. The user can
change the interval in the Configuration menu- See 5.24 Machine configuration menu chapter.
Selecting and setting TIG spotArc
Operating
element
Action Result
Signal light
comes on
The spot time can be set for approx. 4 s using the "Welding parameter
setting" rotary dial (spot time setting range 0.01 s to 20.0 s)
Set spot time "tP"
The „TIG automated pulses“ pulse variant is switched on ex works together
with the TIG spotArc process.
TIG automated pulses (frequency and balance)
The up-slope and down-slope times should be set to “0” to achieve an effective result.
