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VERTICAL POSITION Is easier for many people to Pull the torch from top to
bottom. It can be difficult to prevent the puddle from running downward.
Pushing the torch from bottom to top may provide better puddle control
and allow slower rates of travel speed to achieve deeper penetration. When
vertical welding, angle B (see HOLDING THE TORCH) is usually always kept at
zero, but angle A will generally range from 45 to 60 degrees to provide better
puddle control. OVERHEAD POSITION Is the most difficult welding position.
Angle A (seeHOLDING THE TORCH) should be maintained at 60 degrees.
Maintaining this angle will reduce the chances of molten metal falling into
the nozzle. Angle B should be held at zero degrees so that the wire is aiming
directly into the weld joint. If you experience excessive dripping of the weld
puddle, select a lower heat setting. Also, the weave bead tends to work better
than the stringer.
Multiple pass welding
Butt Weld Joints When butt welding thicker materials you will need to pre-
pare the edges of the material to be joined by grinding a bevel on the edge
of one or both pieces of the metal being joined. When this is done, a "V" is
created between the two pieces of metal that will have to be welded clo-
sed. In most cases more than one pass or bead will need to be laid into the
joint to close the "V". Laying more than one bead into the same weld joint is
known as a multiple-pass weld. The illustrations in following figure show the
sequence for laying multiple pass beads into a single "V" butt joint.
NOTE: WHEN USING SELF-SHIELDING FLUX-CORE WIRE it is very important
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