Firepower MST 180i Operating Manual page 67

Firepower MST 180i
Art # A-07702
Art # A-07701
Figure 4-26: Multi Run Vertical Fillet Weld
Figure 4-25: Single Run Vertical Fillet Weld
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Figure 4-27: Examples of Vertical Fillet Welds
2. Vertical Down
The E7014 Stick electrode makes welding in this position particularly easy. Use a 1/8"(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 upwards at an angle of about 45º.
3. Overhead Welds
Apart from the rather awkward position necessary, overhead welding is not much more difficult that downhand 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 4-28). 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 1/8"(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.
Art # A-07704
Figure 4-28: Overhead Fillet Weld
Manual 0-5339 4-13 BASIC WELDING GUIDE