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3.
USE
NOTE!
explosion!
3.1
Welding processes
HiArc T 180 is a precise welding tool and will provide high quality results
time after time provided the correct operational procedures are followed.
Welding quality is not only influenced by the machine itself. Personal
expertise, ancillary equipment and consumables also play an essential role,
as does the correct, fused supply power.
EN
Welding is carried out when an electric arc is established between the
welding electrode and work piece. Welding is not possible unless the
equipment is correctly set-up, including the earth return cable attached to
the work piece. This cable creates the welding circuit that allows the welding
current to flow. Please check that the earthing clamp is on the work piece
and that the contact area of the clamp is clean and free from paint and rust.
3.1.1 Manual Metal Arc welding (MMA)
In manual metal arc welding (MMA) the welding filler material is melted
from the electrode to the weld pool. The rate of the welding current is
selected based on the electrode size used and the welding position. Arc
forms between electrode tip and welding piece. The melting electrode
coating forms gas and slag, which protects the weld pool. Slag solidified
over the weld is removed after welding e.g. with a chipping hammer (use of
eye protection is strongly advised).
3.1.2 TIG welding
In DC TIG welding, the arc between the tungsten electrode and the welding
piece melts the welding piece, thus forming a weld pool. Arc and electrode
are shielded by an inert shielding gas (argon). If necessary, filler is used. Filler
wire is fed into the weld pool from the outside of the arc. The filler wire and
the welding current level are decided according to the base material type
and thickness, joint form and welding position.
(Gas regulator, flow meter and pure argon shielding gas are not provided in
this package.)
10
10
Hiarc T 180
It is forbidden to weld in places where there is a danger of fire or
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