PowR-Quip Contractor Serie Manual De Instrucciones página 17

Gas metal arc - welding is a process for welding used a wire welder.
The wire is solid and an inert gas is used.
Tungsten arc - welding is a process for welding used welders with
high frequency generators.
The arc is created between a non-consumable tungsten electrode
and the work piece. It is not necessary to use a filler metal.
Union of overlap - the union of two members superimposed in
parallel planes.
Open circuit voltage - the voltage between the electrode and the
welding ground clamp when no current is flowing (not welding). This
determines the speed with which is turned on the bow. Overlap -
occurs if the amperage is too low. In this case, the molten metal falls
off the electrode without joining the base metal.
Porosity - cavity that forms during the solidification of the welded
area. Porosities weaken the union.
Penetration - the depth that the arc penetrates inside the work
piece during the welding process. For well done welding well it must
achieve 100% penetration, meaning that the whole thickness of the
work piece will melt and solidify. The area affected by the heat should
be easily visible from the other side.
Protected arc - welding is a welding process that uses a consumable
electrode to support the arc. Protection is achieved by the melting of
the flux of the electrode.
Impedances
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Slag - a layer of residue of flux that protects the union of oxides and
other contaminants while metals solidify (cool). This must be cleaned
once the metal has became cool.
Spatter – Small metal particles produced during the welding process
and which are solidified in the work surface. This can be minimized
by spraying a suitable repellant before welding.
Points - a union made welding to keep the parts aligned until the
welding process is completed.
Angle of displacement - the angle of the electrode with respect to
the line of welding. This varies between 5 and 45 degrees depending
on the conditions.
T Union - is the union of the edge of a metal floor with another surface
at an angle of 90 degrees.
Scour - the result of welding amperage too high. This causes slots
on both sides of the flange which reduces the strength of the union.
Sediment - the volume of molten metal to weld until it solidifies as
a welded metal.
Flange - a thin layer or layers of metal deposited on the base metal
when the electrode melts. Its thickness is usually twice the diameter
of the electrode.
Working angle - the angle of the electrode with respect to the
horizontal, measured at right angles to the line of welding.
WELDER DIAGRAM
Power Switch
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