ESAB Miniarc 150, Инструкция по эксплуатации, Страница: 29 / 48

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As in the case of welding in the flat position, it is best to start practicing by first running weld beads in the various positions.
Then as proficiency is gained on these operations, practice may be continued on butt and fillet welds (tee and lap joints) in
these positions.
One of the first facts to be noted when welding in these positions is that the force of gravity tends to cause the molten metal
to drip (fall) down. The technique used, therefore, must be acquired to overcome this. Start by making horizontal weld beads
on plates inclined at degrees as shown in Figure 3.27. When this has been mastered so that uniform beads can be made
consistently, practice on welding vertically may be started. Again begin with an easy operation such as running beads verti-
cally on plates set at degrees. (See Figure 3.28.)
Figure 3.27 Horizontal Weld Beads - Inclined Plate
Figure 3.28 Vertical Weld Beads - Inclined Plate
To progress with this practice it is necessary now to move the plates into vertical position. The details of horizontal weld
beads are given in Figure 3.29.
Figure 3.29. Horizontal Weld Beads - Vertical Plate
Welding vertically may be performed either by welding upward or starting from the top and welding down. It is generally
conceded that working upward is easier and therefore, weld beads in this manner should be practiced. A method for making
weave weld beads is illustrated in Figure 3.30.
SECTION 3 OPERATION