Xcel-Arc RAZORWELD 205, Operating Manual, Page: 33 / 52

RAZORWELD™205SS MIG/TIG/STICK Welder Manual
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Razor Weld
TIG WELDING GUIDE
TIG Welding with Filler Wire Technique
It is necessary in many situations with TIG welding to add a filler wire into the weld pool to
build up weld reinforcement and create a strong weld. Once the arc is started the torch
tungsten is held in place until a weld pool is created, a circular movement of the tungsten
will assist is creating a weld pool of the desired size. Once the weld pool is established
tilt the torch at about a 75
° angle and move smoothly and evenly along the joint. The
filler metal is introduced to the leading edge of the weld pool. The filler wire is
usually held at about a 15° angle and fed into the leading edge of the molten pool,
the arc will melt the filler wire into the weld pool as the torch is moved forward. Also a dabbing technique
can be used to control the amount of filler wire added, the wire is fed into the molten pool and retracted in
a repeating sequence as the torch is moved slowly and evenly forward. It is important during the welding
to keep the molten end of the filler wire inside the gas shield as this protects the end of the wire from being
oxidised and contaminating the
weld
pool.
75°
15°
Form a weld pool
Travel direction
Angle torch
Add Tig filler wire
Retract the filler wire
Move the torch forward to
the front of the weld pool Repeat the process
gas
shield
TIG Welding Fusion Technique
Manual TIG welding is often considered the most difficult of all the welding process
-
es. Because the welder must maintain a short arc length, great care and skill are re
-
quired to prevent contact between the electrode and the workpiece. Similar to Oxy
-
gen Acetylene torch welding, Tig welding normally requires two hands and in most
instances requires the welder to manually feed a filler wire into the weld pool with one
hand while manipulating the welding torch in the other. However, some welds combining
thin materials can be accomplished without filler metal like edge, corner, and butt joints.
This is known as Fusion welding where the edges of the metal pieces are melted together using only the heat and
arc force generated by the TIG arc. Once the arc is started the torch tungsten is held in place until a weld pool is
created, a circular movement of the tungsten will assist is creating a weld pool of the desired size. Once the weld
pool is established tilt the torch at about a 75
° angle and move smoothly and evenly along the joint while fusing
the materials together.
75°
Form a weld pool Angle torch Move the torch slowly
and evenly forward
Travel direction