Unimig VIPER 182 Mk II, Operating Manual

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Normal Stick Out
5-15°
Travel Direction
check
check
check
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.
Travel Direction
Not enough angle
20°+
Travel Direction
Good level of control over the weld pool,
even flat weld.
Even arc, good penetration
even fusion, good finish.
Unstable arc, spatter, over heat
contact tip.
Unstable arc, spatter, poor
penetration and fusion.
Less control over the weld pool, more
spatter.
Poor control, unstable arc, less penetration,
lots of spatter.
Correct Angle Not enough angle Too Much Angle
5-10mm
Too Short Too long
times
times
times times
times
times
Travel Angle
Travel angle is the right to left, relative to the direction of welding. A travel angle of 5°- 15° is ideal and
produces the right level of control over the weld pool. A travel angle higher than 20° will give an unstable
arc condition with poor weld metal transfer, less penetration, high levels of spatter, weak gas shield and poor
quality finished weld.
Angle to Work
The work angle is the forward back angle of the gun relative to the workpiece.
The correct work angle provides good bead shape, prevents undercut, uneven penetration, weak 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
overheat the contact tip. Too long stick out will cause an unstable arc, lack of penetration, lack of fusion, and
increase spatter.
MIG WELDING GUIDE
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