angle will determine the characteristic of the weld bead profile and degree of weld penetration
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.
Perpendicular Technique
- The wire is fed directly into the weld, this technique is used primarly
for automated situations or when conditions make it necessary. The weld profile is generally
higher and a deeper penetration is achieved.
Drag Technique
- The gun and wire is dragged away from the weld bead. The arc and heat is
concentrated on the weld pool, the base metal receives more heat, deeper melting, more
penetration and the weld profile is higher with more build up.
flat even weld profile
light penetration
narrower weld profile
even penetration
narrow
higher
weld profile more
penetration
35
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