OPERATING MANUAL
Transmig 255i
Transmig 255i
MANUAL ARC (MMAW) WELDING
7-8
Manual 0-5550
C. Vertical Welds
1. Vertical Up
Tack weld a three feet length of angle iron to your work bench in an upright position. Use a 3.2mm
Ferrocraft 21 electrode and set the current at 100 amps. Make yourself comfortable on a seat in front
of the job and strike the arc in the corner of the fillet. The electrode needs to be about 10º from the
horizontal to enable a good bead to be deposited. Refer Figure 7-16. Use a short arc, and do not attempt
to weave on the first run. When the first run has been completed de-slag the weld deposit and begin
the second run at the bottom. This time a slight weaving motion is necessary to cover the first run and
obtain good fusion at the edges. At the completion of each side motion, pause for a moment to allow
weld metal to build up at the edges, otherwise undercut will form and too much metal will accumulate
in the centre of the weld. Figure 7-17 illustrates multi-run technique and Figure 7-18 shows the effects
of pausing at the edge of weave and of weaving too rapidly.
Art # A-07701
Figure 7-16: Single Run Vertical Fillet Weld
Art # A-07702
Figure 7-17: Multi Run Vertical Fillet Weld
Art # A-07703
Figure 7-18: Examples of Vertical Fillet Welds