GYS WF 50 Mode D'emploi page 29

User manual
WELDING PROCESSES
• Standard
This standard MMA welding mode is suitable for most welding applications. It enables welding with all types of coated, rutile, basic and cellulosic
electrodes, as well as on all materials: steel, stainless steel and cast iron.
• Pulse
The pulsed MMA welding mode is suitable for upright (PF) applications. The pulsed setting keeps the weld pool cold while promoting material transfer.
Without pulsing, vertical upward welding requires a 'Christmas tree' movement, i.e. a difficult triangular movement. Thanks to Pulsed MMA welding,
it is no longer necessary to perform this movement. Depending on the thickness of your workpiece, a straight upward movement should suffice.
However, if you want to enlarge your weld pool, a simple sideways movement similar to downheld welding is sufficient.. In this case, you can set the
frequency of your pulsed current on the display screen. This method offers greater control of the vertical welding operation.
CHOOSING COATED ELECTRODES
• Rutile electrodes: very easy to use in any position.
• Basic electrodes: it can be used in all positions and is suitable for safety work due to its increased mechanical properties.
• Cellulosic electrodes: a very powerful arc with a high melting speed, its ability to be used in all positions makes it especially suitable for
pipeline work.
CONFIGURING THE SETTINGS
Units
Arc Force
Welding current A
Duration of Hot Start s
Pulse
Hz
frequency
Percentage Hot Start %
Percentage I cold %
Cold weather s
Access to some of the welding parameters depends on the selected display mode: Settings/Display mode: Easy, Advanced or Expert. Refer to the
HMI manual.
ADJUSTING THE WELDING INTENSITY
The following settings correspond to the applicable current range depending on the type and diameter of the electrode used. These ranges are quite
large as they depend on the usage and the welding position.
electrode Ø (mm)
1.6
2.0
2.5
3.15
4.0
5
6.3
ADJUSTING THE ARC FORCE
It is advisable to set the Arc Force to the middle position (0) to start welding and then adjust it according to the results obtained and individual welding
preferences. Note: The arc-force adjustment range is specific to the type of electrode chosen.
GOUGING
During gouging, an electric arc burns between the gouging electrode and the metal workpiece, heating the workpiece to fusion. This weld pool is
«cleaned» with compressed air. Gouging requires an electrode holder with a compressed air connection (ref. 041516) and gouging electrodes:
Type Quantity
6.5 x 305 mm 50
Translation of the original
instructions
Arc Force is an overcurrent administered to prevent sticking when the electrode or weld bead touches the weld
pool.
The welding current is determined by the type of electrode chosen (see electrode packaging).
Hot Start is an overcurrent at the ignition stage which prevents the electrode from sticking to the workpiece. The
intensity (% of welding current) and the time (seconds) can be programmed.
PULSE mode's PULSING frequency.
Hot Start is an overcurrent at the ignition stage which prevents the electrode from sticking to the workpiece. The
intensity (% of welding current) and the time (seconds) can be programmed.
Rutile E6013 (A)
30-60
50-70
60-100
80-150
100-200
150-290
200-385
Ampere
400 A
Basic E7018 (A)
30-55
50-80
80-110
90-140
125-210
200-260
220-340
ref.
086081
WF 50
29