Tig Welding Operations - Solter aeroprocess 4200 DV Manual De Instrucciones

The hot-start feature allows a slightly higher initial power to be supplied to improve striking and facilitate the creation
of the weld. This feature reduces the risk of fusion defects that may appear at the beginning of the weld.
4200 DV Aeroprocess machines have the arc-force feature. This feature assists the transfer of coated electrode ma-
terial by adjusting the short-circuit current. If a prolonged short circuit of more than a second occurs, the anti-stick
function is activated, so that the machine stops supplying power to allow to pull off the electrode.
If you use cutting or arc gouging electrodes, set an Arc Force value of more than 150%.
You can increase the sensitivity of the arc-force feature using the P.28 program function. A high value softens the arc
and reduces the number of projections, whereas a low value increases sensitivity assisting with the transfer of mate-
rial.
For cutting electrodes, a sensitivity of 1 to 3 is recommended. For rutile or basic electrodes, the ideal sensitivity is
between 5 and 7.

TIG WELDING OPERATIONS

For TIG welding, you must disconnect the winder from the power unit. The torch is connected to the negative terminal
and the earth lead to the positive. Remember to connect the gas and cooling intakes if you have them.
Additional parameters in TIG mode:
For the Aeroprocess 4200 DV model, arc ignition for TIG processes is done by contact. Press the electrode lightly
against the work piece (1), press the torch button and wait for 1 to 2 seconds. The shielding gas will start flowing and
the tungsten electrode will heat up slightly to allow ignition of the arc (2). Slowly raise the electrode from work piece
while rotating the torch, so that the nozzle remains in contact with the work piece (3). The arc will start and the ampe-
rage will increase to the pre-set level (4).
SOLTER
SOLDADURA S.L.
PrG: Pre-gas time. Time during which gas is supplied before welding
t1: Primary time amperage (only for TIG pulse).
A2: Secondary level amperage (only for TIG pulse).
t2: Secondary time amperage (only for TIG pulse).
tdn: Down ramp time of the welding current at the end of the bead in tenths
of seconds
PtG: Post-gas time. Determines the time that gas will be supplied after the
end of welding. The possible values are from 0.1 to 5.0 seconds
tiG: Slope down time for welding current at the end of the welding process
in tenths of seconds.
nor: Normal mode without pulsation.
Pul: Pulse mode.
AEROPROCESS
Select TIG mode.
The only adjustable parameter is the
welding current. The other parameters
must be set in the SET menu.
17