Product Manual

Page 47 of 58
c. Types of weld bead
The following paragraphs discuss the most used arc welding beads.
The STRINGER BEAD is formed by traveling with the electrode in a straight line while
keeping the electrode centered over the weld joint.
The WEAVE BEAD 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 electrode. It is best to hesitate momentarily at each side before
weaving back the other way.
d. Welding position
The FLAT POSITION is easiest of the welding positions and is most used. It is best if
you can weld in the flat position if at all possible, as good results are easier to achieve
in this position.
The HORIZONTAL POSITION is performed very much the same as the flat weld except
that the angle is different such that the electrode, and therefore the arc force, is directed
more toward the metal above the weld joint. This more direct angle helps prevent the
weld puddle from running downward while still allowing slow enough travel speed to
achieve good penetration. A good starting point for your electrode angle is about 30
degrees DOWN from being perpendicular to the work piece.
e. Judge the good weld bead
When the trick of establishing and holding an arc has been learned, the next step is
learning how to run a good bead. The first attempts in practice will probably fall short
of acceptable weld beads. Too long of an arc will be held or the travel speed will vary
from slow to fast. See the following illustration:
Stringer Bead
Weave Bead
Flat Position
Horizontal Position