Warning – Craftsman 196.205690 User Manual

Page 19

Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".

Advertising
background image

angle B (see HOLDING THE GUN - p.16) is
such that the wire, and therefore the arc force,

is directed more toward the metal above the

weld joint. This is to help prevent the weld

puddle from running downward while still

allowing slow enough travel speed to achieve
good penetration. A good starting point for
angle B is about 30 degrees DOWN from

being perpendicular to the work piece.

Figure 15.

Horizontal Position

3. The VERTICAL POSITION (Figure 16) is
the next most difficult position. Pulling the
gun from top to bottom may be easier for
many people, but in some instances it can
be difficult to prevent the puddle from
running downward. Pushing the gun 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 GUN - p.16) is usually always kept at
zero, but angle A will generally range from 45
to 60 degrees to provide better puddle
control.

WARNING

Hot slag can cause fires and serious injury

from burns! Be sure to wear protective cloth­

ing and eye gear when using the Overhead
Position.

4. The OVERHEAD POSITION (Figure 17) is
the most difficult welding position because

gravity is pulling at the weld puddle trying to
make it drip off the work piece. Angle A (see

HOLDING THE GUN - p.16) should be main­

tained at 60 degrees, the same as in the flat
position. Maintaining this angle will reduce the
chances of molten metal falling into the nozzle
should it drip from the weld puddle. 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 bead when welding overhead.

Figure

17. Overhead Position

MULTIPLE PASS WELDING

Butt Weld Joints.

When butt welding thicker

materials, you will need to prepare 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 closed. 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 Figure 18 show the
sequence for laying multiple pass beads into
a single V butt joint.

19

Advertising