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Northern Industrial Welder
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Instructions and Parts Manual
Flux Core 125
Wire Feed, Gasless Welder
For most welding jobs you will pull the
torch along the weld joint to take
advantage of the greater weld puddle
visibility.
Travel speed is the rate at which the
torch is being pushed or pulled along
the weld joint. For a fixed heat setting,
the faster the travel speed, the lower
the penetration and the lower and
narrower the finished weld bead.
Likewise, the slower the travel speed,
the deeper the penetration and the
higher and wider the finished weld
bead.
6.2 Types of welding beads
As you become more familiar with
your new welder and better at laying
some simple weld beads, you can
begin to try some different weld bead
types.
The STRINGER BEAD is formed by
traveling with the torch in a straight
line while keeping the wire and nozzle
centered over the weld joint. See
following figure.
The WEAVE BEAD 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 torch. It is best to hesitate
momentarily at each side before
weaving back the other way.
6.3 Welding position
FLAT POSITION is easiest of the
welding positions and is most
commonly used. It is best if you can
weld in the flat position if at all
possible as good results are easier to
achieve.
HORIZONTAL POSITION Is
performed very much the same as
the flat weld except that angle B (see
HOLDING THE TORCH) is such that
the wire, directed more toward the
metal above the weld joint is to help
prevent the weld puddle from running
downward while still allowing slow
enough travel speed. A good starting
point for angle B is about 30 degrees
DOWN from being perpendicular to
the work piece
.
VERTICAL POSITION It 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