Travel Angle -
Travel angle is the right to left angle
relative to the direction of welding. A travel angle
of 5°- 15° is ideal and produces a good level of control
over the weld pool. A travel angle greater that 20° will
give an unstable arc condition with poor weld metal
transfer, less penetration, high levels of spatter, poor
gas shield and poor quality finished weld.
Angle to Work -
The work angle is the forward back
angle of the gun relative to the work piece.
The correct work angle provides good bead
shape, prevents undercut, uneven penetration,
poor gas shield and poor quality finished weld.
Stick Out -
Stick out is the length of the unmelted
wire protruding from the end of the contact tip.
A constant even stick out of 5-10mm will produce
a stable arc, and an even current flow providing
good penetration and even fusion. Too short stick
out will cause an unstable weld pool, produce
spatter and over heat the contact tip. Too long
stick out will cause an unstable arc, lack of
penetration, lack of fusion and increase spatter.
Angle 5°- 15°
Not enough angle
Angle more than 20°
good level of control
over the weld pool,
even flat weld.
poor control, unstable
arc, less penetration, lots
of spatter.
good level of control
over the weld
pool, even flat weld.
less control over
the weld pool more
spatter.
poor control, unstable
arc, less penetration, lots
of spatter.
Correct angle
Too much angle
less control over the
weld pool more spatter.
Not enough angle
14
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