WELDTECH EZITIG 200AC/DC, Operating Instructions Manual

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EZITIG200 AC/DC 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 insufficient 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 difficult that
down hand welding.Set up a specimen for overhead
welding by first 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 fillet welds.
Use a 3.2mm E6013 Stick electrode at 100 amps, and
deposit the first run by simply drawing the electrode
along at a steady rate. You will notice that the weld
deposit is rather convex, due to the effect 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