Matco Tools MP200DVILCD Owner's Manual page 29

Travel direction is the direction the torch is moved along the weld joint in relation to the
weld puddle. The torch is either PUSHED into the weld puddle or PULLED away from
the weld puddle.
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.
b. 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 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 torch. It is best to hesitate momentarily at each side before weaving back the other way.
c. Welding Positions
The FLAT POSITION is the 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.
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