1. The STRINGER
BEAD (Figure
10) is
formed
by traveling
with the gun in a straight
line while keeping
the wire and nozzle
centered
over the weld joint. This is the
easiest
type of bead to make.
Figure
10. Stringer
Weld Bead
2. The WEAVE
BEAD (Figure
11) is used
when you want to deposit
metal over a wider
space than would
be possible
with a stringer
bead.
It is made by weaving
from side to
side while moving with the gun. It is best to
hesitate
momentarily
at each side before
weaving
back the other way.
Figure
11. Weave
Weld Bead
WELDING
POSITIONS
There
are three basic welding
positions:
flat,
horizontal,
and vertical.
1. The FLAT POSITION
(Figure 12) is the
easiest of the welding
positions
and is proba-
bly the one you have been using thus far. It is
best if you can weld in the fiat position if at all
possible
as good results are easier to achieve.
2. The HORIZONTAL
POSITION
(Figure
13)
is next in difficulty
level. It is performed
very
much the same as the flat weld except that
angle B (see POSITION
OF THE GUN TO
THE WORK
PIECE
- p14) 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 pene-
tration.
A good starting
point for angle B is
about 30 degrees
DOWN
from being
perpendicular
to the work piece.
Figure
13. Horizontal
Position
Weld
3. The VERTICAL
POSITION
(Figure
14) 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 run-
ning downward.
Pushing
the gun from bot-
tom to top may provide
better puddle control
and allow slower
rates of travel speed to
achieve
deeper
penetration.
When vertical
welding,
angle B (see POSITION
OF THE
GUN TO THE WORK
PIECE - p14) is
usually
always
kept at zero, but angle A will
generally
range from 45 to 60 degrees
to
provide
better puddle control.
Figure 12. Flat Position Weld
16
Figure
14. Vertical
Position
Weld