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VIPER MIG 135
OPERATING MANUAL
8.3 Basic MIG Welding
Good weld quality and weld profile depend on gun angle, the direction of travel, electrode extension (stick out), travel
speed, the thickness of base metal, wire feed speed (amperage) and arc voltage. To follow are some basic guides to assist
with your setup.
8.3.1 Gun Position - Travel Direction & Work Angle
Gun position or technique usually refers to how the wire is directed at the base metal, the angle and travel direction
chosen. Travel speed and work angle will determine the characteristic of the weld bead profile and degree of weld
penetration.
8.3.2 Push Technique
The wire is located at the leading edge of the weld pool and pushed towards the un-melted work surface. This technique
offers a better view of the weld joint and direction of the wire into the weld joint. Push technique directs the heat away
from the weld puddle, allowing faster travel speeds providing a flatter weld profile with light penetration - useful for
welding thin materials. The welds are wider and flatter, allowing for minimal clean up / grinding time.
8.3.3 Perpendicular Technique
The wire is fed directly into the weld. This technique is used primarily for automated situations or when conditions make it
necessary. The weld profile is generally higher, and deeper penetration is achieved.
8.3.4 Pull/Drag Technique
The gun and wire are dragged away from the weld bead. The arc and heat are concentrated on the weld pool. The base
metal receives more heat, deeper melting, more penetration and the weld profile is higher with more buildup.
Push Technique
Perpendicular Technique
Drag Technique
MIG: Welding Guide
10°
Travel Direction
Side View
0°
Travel Direction
Side View
10°
Travel Direction
Side View
Flat, even weld profile, light penetration.
Narrower weld profile, even penetration.
Narrower and higher weld profile, more
penetration.
