Stel 600344000L, Instruction Manual

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14
TIG WELDING INFORMATION
ELECTRODE TYPE
STEL recommends the use of Ceriated Tungsten
electrodes (grey) for optimum arc ignition and
welding performance during either AC or DC
welding. When changing from AC to DC welding a
change of the electrode is recommended.
A suitable electrode point is made as shown in this
example.
Angle a varies as the welding current varies; the
following table recommends the value:
FILLER MATERIAL
Basic rules:
1 ) Always use the same filler rod specification
with the same mechanical and chemical properties
as the material to be welded;
2) it is recommended not to use parts of the base
material, as they could contain impurities due to
the work process;
3) if the material used has a different chemical
composition, it is advisable to assess the final
characteristics of the joint, both mechanical and
anti-corrosive.
GAS
The shielding gas normally used is pure argon with
a gas flow rate that varies according to the current
used and joint set up (4-6 I/min).
TIG WELDING ON COPPER
Due to the properties already described, TIG
welding is also excellent for working on materials
with high heat conductivity. The gas used is mostly
argon and, in the case of copper, the use of a
reversed support is recommended. Preparation of
the edges for welding copper (flat butt joint).
The electrode used is of the same type described
for welding steel; it is prepared as described
above. To avoid possible oxidation in the welded
area, weld materials containing phosphor, silicon
and deoxidizing components are used.
DUTY CYCLE AND
EXCESSIVE TEMPERATURE
The duty cycle is the percentage of use of the
welding machine in 10 minutes which the operator
must respect to avoid the power supply output
blocking due to temperature exceed.
If the machine goes into excess temperature:
The yellow LED will illuminate.
It is necessary to wait about 10 minutes before
resuming welding.
DISPOSAL OF ELECTRICAL
AND ELECTRONIC
EQUIPMENT
Do not dispose of electrical
equipment together with normal
waste! In observance of European
Directive 2002/96/EC on Waste
Electrical
and Electronic
Equipment and its implementation
in accordance with national law,
electrical equipment that has reached the end of its
life must be collected separately and returned to
an environmentally compatible recycling facility. As
the owner of the equipment, you should get
information on approved collection systems from
our local representative. By applying this European
Directive you will improve the environment and
human health!
IN CASE OF MALFUNCTIONS, REQUEST
ASSISTANCE FROM QUALIFIED PERSONNEL.
Angle (°)
Welding current A
30
60 – 90
90 –120
5 - 30
30 - 120
120 - 160