Tig Welding (Lift-Arc) - Fimer T 422 Manuel D'emploi

To select this welding mode:
turn switch 10, select TIG and press
confirm.
Seleziona il procedimento
MMA
TIG
Inert gas welding with an infusible Tungsten
electrode and arc (TIG: Tungsten Inert Gas)
for short, is a welding procedure whereby
the heat is produced by an arc that strikes
between a tungsten electrode (which is not
consumable) and the workpiece.
The welding is carried out by fusing the
edges of the workpiece or by adding other
filler material using specific types of rod to
create a joint.
The torch is ignited by touching the
workpiece with the electrode and then lifting.
The TIG procedure can be adapted to any
work position and can also be applied to
very thin sheets of metal (0,2-0,3 mm). The
TIG procedure is distinguished by the ease
with which the arc can be controlled, a
powerful and concentrated thermal source
and the simple manner in which the filler
material can be controlled.
This makes the TIG procedure particularly
suitable for precision welding on a wide
variety of thicknesses, in difficult positions
and on pipes which require full penetration.
10
The TIG procedure can be used on various
types of metals, such as, ferrous materials,
alloys, nickel, copper, titanium, magnesium.
During welding, potentiometer 8 in fig. 1, for
example, regulates the welding current.
INIZIO
The correct connection of the torch and
earth cable is shown in the following table:
OPZIONI
WELDING
PROCESS
TIG

7.1 TIG WELDING (Lift-Arc)

By turning switch 10 it is possible to choose
from the different TIG welding modes; press
the switch to select the desired option.
Select TIG procedure
Lift Arc
Select this option and the welding screen
will appear:
Ready to weld
start current
start time
slope up
pulse mode
background current
pulse frequency
pulse balance
spot welding
Front socket
+
13 of Fig.1
EARTH
CABLE
150
>
A
15,0
V
50%
0,0s
0,0s
OFF
20%
10,0
50%
0,0s
Front socket
-
11 of Fig.1
TORCH
CABLE
START
BACK
OPTIONS
TIG
START
BACK
MEM +
OPTIONS
TIG
Lift