GYS NEOPULSE 400 CW Manual De Uso página 38

Operating manual
MMA (SMAW) WELDING MODE
INSTALLATION AND GUIDANCE
• Plug the cables, electrode holder and earth clamp into the plug connections.
• Respect the electrical polarities and the strength of the welding power indicated on the electrode boxes.
• Remove the coated electrode from the electrode holder when the welding power source is not in use.
• The equipment is fitted with 3 inverter-specific features:
- Hot Start provides an overcurrent at the beginning of the welding process.
- Arc Force creates an overcurrent which prevents the electrode from sticking to the weld pool.
- The Anti-Stick technology makes it easier to unstick the electrode from the metal.
PROCESS SETTINGS
ADJUSTABLE
Settings
Rutile
Electrode type Basic
Cellulosic
Anti-Sticking OFF - ON
Hold
Power
Thermal coefficient
Access to some welding settings depends on the selected display mode: Settings/Display mode: Easy, Expert, Advanced. Refer to the HMI manual.
WELDING PROCESSES
• STANDARD WELDING
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.
• PULSED WELDING
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 monitor. 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
Percentage
Hot Start
Duration of Hot Start
Welding current
Arc Force
Percentage I cold
Cold weather
Pulse
frequency
Access to some welding settings depends on the selected display mode: Settings/Display mode: Easy, Expert, Advanced. Refer to the HMI manual.
38
Translation of the original
instructions
Welding processes
Standard
SETTINGS
Units
%
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.
s
A The welding current is determined by the type of electrode chosen (see electrode packaging).
Arc Force is an overcurrent administered to prevent sticking when the electrode or weld bead touches the weld
%
pool.
%
s
Hz PULSE mode's PULSING frequency.
Pulsed
The type of electrode determines the settings in order to optimise its
weldability depending on the type of electrode used.
The anti-stick feature is recommended to safely remove the electrode in
the event of it sticking to the workpiece (the current is cut off automati-
cally).
See «Power» section on the following pages.
NEOPULSE 400 CW