ESAB CIGWELD WeldSkill 205AC/DC, Operating Manual

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STICK (MMAW) Welding 6-10 0-5555
Art # A-07701
Figure 6-17: Single run vertical fillet weld
Art # A-07702
Figure 6-18: Multi run vertical fillet weld
Art # A-07703
Figure 6-19: Examples of vertical fillet welds
2. Vertical Down
The Ferrocraft 21 electrode makes welding in
this position 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 upwards at
an angle of about 45°.
3. Overhead Welds
Apart from the rather awkward position nec-
essary, 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 45° to the horizontal and
tilted 10° in the line of travel (Figure 6-20). 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 Ferrocraft 12XP
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 6-20: Overhead fillet weld
6.18 Distortion
Distortion in some degree is present in all forms of
welding. In many cases it is so small that it is barely
perceptible, but in other cases allowance has to be
made before welding commences for the distortion
that will subsequently occur. The study of distortion is
so complex that only a brief outline can be attempted
hear.