Instruction manual

15
NO
YES
Dd1L
1/16" 1/32" 0.08"
3/32" 3/64" 0.12"
1/8" 1/16" 5/32"
5/32" 0.08" 0.20"
a = 20° “ 25°
↔
↔
↔
d1
L
D
α
ELECTRODE PREPARATION FOR A.C. TIG WELDING
NO
YES
DL
1/16" 0.12"
3/32" 0.20"
1/8" 0.28"
5/32" 0.39"
a = 30° “ 60°
↔
↔
L
D
α
70˚÷80˚
20˚
40˚
30˚
➠
➠
20˚
70˚÷80˚
90˚
20˚
10˚
➠
➠
70˚÷80˚
20˚
➠
➠
20˚
70˚÷80˚
90˚
diameter of the electrode fitted to the torch and the number
amps needed to perform a certain job.When welding aluminum,
pure tungsten ( D.I.N. color GREEN ) or zirconium tungsten
( D.I.N. color WHITE ) electrodes must be used.
• When welding, the electrode tip will tend to become
spherical. If the “ball” at the tip of the electrode is bigger than
the diameter of the electrode itself, it means that the current
you are using is too high for that electrode; the electrode
should be replaced with one of a larger diameter.
Proper electrode preparation is extremely important.
Carefully follow the steps shown.
• The post-gas time in seconds (REGULATED BY KNOB
L) must be sufficient enough for the electrode to cool down.
The electrode should have a bright, glowing tip during th
cool down period.
• To adjust the balance of the square wave ,see letter (S),
section 4. (exept item 235)
• To preset working currents, see section 4.1.
• The diameter of the filler material must be less than or
equal to the thickness of the workpiece to be welded.
• The ratio between the current to be used and the
workpiece thickness is 40 Amp/mm. E.g.: a thickness of
2 mmx40 = 80 Amperes.
ATTENTION: THIS RATIO MAY VARY ACCORDING TO
WORKPIECE SIZE AND IS ONLY MEANT TO BE AN
APPROXIMATE GUIDELINE.
• The alumina (aluminium oxide) must be removed from the
weld area to avoid aluminum oxide contamination
and the risk of pile up, both typical weld defects when
welding aluminum.
• The removal of the alumina layer can be done with
mechanical brushes. The brush disc should consist of
stainless steel wires. The alumina must be removed from
at least a 5 cm.area surrounding the weld area.
• Use protection lenses with shades of at least D.I.N. 11.
• Use pure ARGON to shield the arc.
6.3 D.C. TIG WELDING is used for welding: Steel,
Stainless, Steel and Copper
• Position selector (R) on D.C.
• Position selector (C) on
The TIG torch must be connected to the neg. terminal (-) and
the ground cable to the positive termianl (+).
• Position selector (M) on if you wish to start the arc
without touching the workpiece and on if you wish to
touch start the arct.
When scratch starting without High Frequency, it is
recommended that you use the max. up slope time 8 sec.
• To preset the welding current, see section 4.1.
• To select the welding program, see letter (S), section 4.
• The diameter of the filler material must be equal to or less
than the thickness of the workpiece.
• The ratio between the current to be used and the workpiece
thickness is: 20/30 Amp. per millimeter for carbon and
stainless steels; 80 Amp. per millimeter for copper.
ATTENTION! THIS RATIO MAY VARY ACCORDING TO
WORKPIECE SIZE AND IT IS ONLY MEANT TO BE AN
APPROXIMATE GUIDELINE.
ELECTRODE PREPARATION FOR D.C. TIG WELDING