MK Welding Multi-GMAW 200 LCD PFC, User Manual

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OPERATION
37
EN
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
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