Schweißkraft 1073141, Operating Instructions Manual

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8 CRAFT-STICK | Version 1.12
Operating principle
Fig. 3: Functional principle manual arc welding
Welding current and electrode diameter:
6.2 Principle of TIG welding
In TIG welding ( Wolfram Inert* Gas Welding ) an arc is
drawn between a non-meltable tungsten electrode.
Pure argon is usually used as the shielding gas - a inert
gas that does not combine with any element and there-
fore also prevents reactions of the molten metalt.
The filler wire is supplied without current, either manually
(manual welding) or mechanically (automatic welding).
However, there are welding operations that do not re-
quire filler materials. It depends on the material used
whether direct or alternating current is used. The main
advantage of TIG welding is the wide range of materials
to be welded. Materials from 0.3 mm thickness (automa-
ted) such as alloyed steels, high-alloy steels, aluminium
(a.c. welding ), magnesium, copper and their alloys,
unalloyed steels, nickel, gold, silver, titanium and many
more can be welded. Can be used for welding all mate-
rial thicknesses and root layers with thicker cross-secti-
ons. The TIG process achieves the best results compa-
red to other welding processes due to pore-free welds
with a very high tensile strength.
Fig. 4: Principle of TIG welding
Direct current welding:
For welding alloyed steels and non-ferrous metals. The
tungsten electrode is ground to a point. The arc burns
stable.
Lift-Arc ignition: = contact arc ignition during TIG welding
with minimum current. No sticking of the TIG electrode.
(only for the models CRAFT-STICK 161P, 201P).
6.2.1Selection and preparation of electrode
Welding current and electrode diameter:
The electrode is pointed depending on the welding current.
Fig. 5: Angle of the tungsten electrode
ø
Electrode
(mm)
Setting range of welding cur-
rent (A)
1.60 30 - 50
2.00 40 - 70
2.50 70 - 110
3.25 110 - 140
4.00 140 - 180
5.00 180 - 200
Workpiece
Arc
Coating
Core rod
Molten bath
Gas and slag
Rod electrode
ø
Electrode (mm) Setting range of welding
current (A) Minus pole
1.0 10 - 70
1.6 60 - 150
2.4 100 - 250
3.2 200 - 400
Angle [°] Current range [A]
30 0 - 30
60 - 90 30 - 120
90 - 120 120 - 250
120 > 250
electrode
nozzle
Molten baht
Workpiece
Filler material
Inert gas
Tungsten
Inert gas
Angle °