Würth TIG 200S AC/DC Originalbetriebsanleitung Seite 28

The weave bead is used when you want to
deposit metal over a wider space which wouldn't be
possible using a stringer bead (without transfer oscil­
lation). It is made by weaving electrode from side
to side with slight hesitation at the end of each oscil­
lation while moving it longitudinally. That is the best
way to improve weld penetration.
3.7.4 Welding position
Flat position is the easiest of all welding positions
and is most commonly used. It is best if you can weld
in the flat position if at all possible since good results
are easier to achieve.
The horizontal positions is performed very much
the same way as the flat weld except that the angle
is different such way that the electrode, and there­
fore the arc force, is directed more toward the metal
above the weld joint. This more direct angle helps
prevent the weld puddle from running downwards
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 workpiece.
3.7.5 Judging a good weld bead
When the trick of establishing and holding an arc
has been learned, the next step is to lear how to run
a good bead. The first attempts in practice will prob­
ably fall short of acceptable results. Arc too long will
be held or the travel speed will vary from slow to
fast. (Please observe the following picture).
A. Weld speed is too fast.
B. Weld speed is too slow.
C. Arc is too long.
D. Ideal weld.
A solid weld bead requires the electrode to be
moved slowly and steadily along the weld seam.
Moving the electrode rapidly or erratically will pre­
vent proper fusion or create a lumpy, uneven bead.
To prevent ELECTRIC SHOCK, do not perform any
welding while standing, kneeling, or lying directly on
the grounded workpiece.
WARNING!
ELECTRIC SHOCK CAN KILL! To prevent ELECTRIC
SHOCK, do not perform any welding while stand­
ing, kneeling, or lying directly on the grounded
workpiece.
3.7.6 Finishing the bead
As the coating on the outside of the electrode burns
off, it forms an envelope of protective gasses
around the weld. This prevents air from reaching the
molten metal and creating an undesirable chemi­
cal reaction. However, coating burning forms slag.
The slag formation appears as an accumulation of
dirty metal scale on the finished weld. Slag should
be removed by striking the weld with a chipping
hammer.
WARNING!
PEENING THE SLAG FROM A WELD JOINT
CUASES SMALL CHIPS OF METAL TO FLY
THROUGH
THE AIR! Metallic chips flying through the air can
cause eye injury or injury to other parts of the head,
hands or exposed portions of the body. Wear
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