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tungsten inclusions and electrode wear to a minimum.
as shown in
,
are possible.
arc, a narrower weld pool and limited heating of the electrode. Lower values give a
The table
summarises the effects of parameter changes in AC welding.
The instructions for this welding procedure are also valid.
The table
suitable electrode is a pure tungsten electrode (green band).
-
during welding to the actual required heat transfer.
-
enough to allow the electrode and weld pool to cool at the end of welding without
coming into contact with the atmosphere (oxidation and contamination).
current value.
-
-
and the postgas phase will start.
-
pressure and release should be short) the current will change between the setting
1
current will be maintained until the button is released to terminate the welding
time has been reached (spot time).
and the most suitable current.
- The welding current must be regulated according to the diameter of the electrode in
Electrode (mm)
1.6
2
2.5
3.2
4
5
6
, after a few moments the
.
2
).
25
50
40
80
60
110
80
160
120
200
150
280
200
350
- The user must consider that, according to the electrode diameter, higher current
behaviour) of the welding machine. The setting for this parameter can be made
either on the panel or using the remote control with 2 potentiometers.
should be of 20-30 grades.
to avoid overheating, bad gas diffusion and poor performance.
.
.
-
current
appropriate solvents.
for damage to the insulation.
- At the end of these operations re-assemble the panels of the welding machine and
.
screw the fastening screws right down.
- After having carried out maintenance or repairs, restore the connections and wiring
. The
then the problem is located on the mains (cables, plugs, outlets, fuses, etc.).
undervoltage or short circuit) is not lit.
be stopped.
eliminate the incovenience.
- 9 -
.
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