VS-32-L
27
7.3. Description of the welding operation
The
TIG
welding method is the tungsten inert gas welding method. This is a contact-
free welding method. It must not be mixed with the so-called spot welding (with contact
electrode).
The weld is made contact-free by the electric arc under argon shield gas. This is a
commercial shield gas with a degree of purity of 99,996 % (argon 4.6).
Weld gas consumption amounts to 2 litre per seal argon gas. Therefore, a 50-l gas
bottle permits approx. 5000 welding seals.
A high-frequent ignition current ignites the electric arc via an initiating electrode.
The latter is made of tungsten. Each electrode is identified by a colour on the head and
can therefore be ordered according to DIN by each merchant. The electrode used in
the VS 32-L is of the type WS 2 turquoise with the dimensions Ø 2,4 x 175 mm.
The consumption of the electrode must be compensated for.
Note! Preventive maintenance
Replace electrode before the beginning of shift or after 1000
welding operations at the latest or sharpen it.
The electrode can be ground up to 100 times. Up to approx. 1000 welding spots can be
affected for application between the grinding operations.
The electrode should be provided with 2 grinding angles. An obtuse tip of approx. 70°
and a slim tip of approx. 15 °. Angles being too obtuse provide good ignitability, but it is
their disadvantage that they are consumed too quickly which in turn increases ignition
distance. Sharpening the ignition needle should be done by means of a
TITAN-Sharp
grinder
.
TITAN holds
patents
for the TIG welding system in strapping machines Europe and
North America.
The TIG welding method permits the welding of all bright or blued surfaces. In this
context it is important that the surface is not polluted strongly.
Note! Painted strapping material
Galvanised or zinc dust painted strap can
not
(!) be welded. The
same applies to zinc portions in paints used.
B 13 GB 33/06