GYS PROTIG 221 DC FV Manual Del Usuario página 23

Operating manual
Welding current 10 - Imax
Arc Force 0 - 100%
PULSED MMA WELDING
Pulsed MMA welding is suitable for vertical-up (PF) welding. The pulsed feature allows the weld pool to be kept cool whilst also allowing the transfer
of material. Without pulsing, vertical-up welding requires a 'Christmas tree' movement, in other words a complicated triangular movement. Thanks to
pulsed MMA welding, this difficult technique is no longer necessary because, depending on the thickness of the part, a straight upward movement may
be sufficient. If, however, the weld pool needs to be enlarged, this can be done with a simple, lateral movement similar to that of flat-position welding.
Therefore, this process offers greater control of vertical welding operations.
Description Settings
Hot Start percentage 0 - 100%
Welding current 10 - Imax
Pulse rate 1 - 20 Hz
Arc Force 0 - 100%
TUNGSTEN-ELECTRODE WELDING UNDER INERT GAS (TIG WELDING MODE)
CONNECTIONS AND ADVICE
• TIG DC welding requires gas shielding (argon gas).
• Connect the earth clamp to the positive plug connection (+). • Connect the torch's power cable to the negative plug connection (-), as well as the
torch's control and gas connections.
• Make sure that the torch is properly fitted and that the consumables (vise grip, collar support, diffuser and nozzle) are not damaged.
• The choice of electrode will depend on the current of the DC TIG process.
SHARPENING THE ELECTRODE
For optimal use, a sharpened electrode should be used in the following way:
d
Translation of the original
instructions
The welding current is adjusted according to the type of electrode being used (refer to the electro-
des' packaging for more information).
Arc Force is an overcurrent delivered when the electrode or a tack-weld comes into contact with the
weld pool in order to prevent it from sticking.
PULSED MMA WELDING
The greyed-out fields cannot be used in this mode.
Description and advice
Hot Start is an ignition overcurrent that prevents the electrode from sticking to the part being
welded. Its current level and operation time are both preset.
The welding current is adjusted according to the type of electrode being used (refer to the electro-
des' packaging for more information).
PULSED mode's pulse frequency (Hz)
The increment step will vary depending on the frequency range:
Pulse rate
1 - 3 Hz
3 - 20 Hz
Arc Force is an overcurrent delivered when the electrode or a tack-weld comes into contact with the
weld pool in order to prevent it from sticking.
L = 3 x d for a low current.
L = d for a high current.
L
PROTIG 221 DC FV / TIG 300 DC
Increment steps
0.1 Hz
1 Hz
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