Welding procedure
MIG/MAG welding
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099-00L105-EW501
07.06.2019
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Welding procedure
The welding task is selected in the JOB selection menu (material/wire/gas)
> see 5.6.1 chapter
.
The basic settings of the relevant welding procedure, such as operating mode or arc length correction,
can be selected on the main screen on the process parameter panel
> see 4.3.2 chapter
.
The program sequence settings are set in the program sequence menu
> see 5.6.4 chapter
.
6.1 MIG/MAG welding
6.1.1 Welding type
Different forms of MIG/MAG processes are referred to as welding type.
Standard (Welding with standard arc)
Depending on the set combination of wire feed speed and arc voltage, the arc types short arc, transitional
arc or spray arc can be used for welding.
Pulse (Welding with pulsed arc)
A targeted change in the welding current generates current pulses in the arc, which lead to a 1 drop per
pulse of material transfer. The result is an almost spatter-free process, suitable for welding of all materi-
als, in particular high-alloy CrNi steels or aluminium.
Positionweld (Positional welding)
A combination of the pulse/standard or pulse/pulse welding types, which is particularly suitable for positi-
onal welding due to factory-optimized parameters.
6.1.1.1 Welding power (operating point)
The welding power is adjusted according to the principle of one-knob operation. The user can set their
operating point optionally as wire feed speed, welding current or material thickness. The optimum welding
voltage for the operating point is calculated and set by the welding machine. If necessary, the user can
correct this welding voltage
> see 6.1.1.3 chapter
.
Application example (setting via material thickness)
The required wire feed speed is not known and is to be determined.
• Select welding task JOB 76(
> see 5.6 chapter
): material = AlMg, gas = Ar 100%, wire diameter =
1.2 mm.
• Switch the display to material thickness.
• Measure the material thickness (workpiece).
• Set the measured value, e.g. 5 mm, at the machine control.
This set value corresponds to a specific wire feed speed. Switching the display to this parameter will
show the associated value.
In this example, a material thickness of 5 mm corresponds to a wire feed speed of 8.4 m/min.
The material thickness details in the welding programs generally refer to fillet welds in the PB welding po-
sition. They should be regarded as guideline values and may differ in other welding positions.
6.1.1.2 Accessory components for operating point setting
The operating point can be set at various accessory components as well, such as remote control, special
welding torches or robot and industrial bus interfaces (optional interface for automated welding required,
not available for all machines of this series).
See the operating instructions for the machine in question for a more detailed description of the individual
machines and their functions.
6.1.1.3 Arc length
When required, the arc length (welding voltage) can be adjusted for the welding task in hand by +/– 9.9 V.
6.1.1.4 Arc dynamics (choke effect)
This function can be used to adjust the arc between a narrow, hard arc with deep penetration (positive va-
lues) and a wide and soft arc (negative values). In addition, the selected settings are displayed with signal
lights below the rotary knobs.
