WELDTECH WT200MP - Vertical Down and Overhead Welding; Vertical Down Welding Technique; Overhead Welding Technique

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WT200MP Welding Machine
www.weldtech.net.nz
Examples of Vertical Fillet Welds
(Fig 1-27)
Pause at edge of weave
allows weld metal to build
up and eliminates undercut
Note: Weld contour
when insucient pause
at edge of weave
CORRECT INCORRECT
2. Vertical Down
TheE7014Stickelectrodemakesweldinginthispo-
sitionparticularlyeasy.Usea3.2mmelectrodeat100
amps. The tip of the electrode is held in light contact
with the work and the speed of downward travel is
regulated so that the tip of the electrode just keeps
ahead of the slag. The electrode should point up-
wardsatanangleofabout45º.
3. Overhead Welds
Apart from the rather awkward position necessary,
overhead welding is not much more dicult that
downhandwelding.Setupaspecimenforoverhead
welding by rst tacking a length of angle iron at right
angles to another piece of angle iron or a length of
waste pipe. Then tack this to the work bench or hold
in a vice so that the specimen is positioned in the
overhead position as shown in the sketch.
The electrode is held at 45º to the horizontal and
tilted10ºinthelineoftravel(Figure1-28).Thetipof
the electrode may be touched lightly on the metal,
which helps to give a steady run. A weave technique
is not advisable for overhead llet welds.
Usea3.2mmE6013Stickelectrodeat100amps,and
deposit the rst run by simply drawing the electrode
along at a steady rate. You will notice that the weld
deposit is rather convex, due to the eect of gravity
before the metal freezes.
Tilted 10
o
in
line of travel
Overhead Fillet Weld
(Fig 1-28)
Angle tacked to pipe
45
o
to plate