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Fastening
& Joining Methods
Arc-Percussive
Welding
Arc-Percussive technology is a method by
which similar and dissimilar metals are
easily and consistently joined. This process
is used in various industries for applications
such as lead attachment, cable termination,
and small parts welding.
Arc percussive welding is best applied
to butt welding of two wires or a wire end-on
to a plate. Arc percussive welding uses
a high voltage generator to provide an arc
between the two materials to be joined.
This arc ionizes the air and provides a
locally shielded atmosphere. Following the
arc initiation, one of the materials is
thrust against the other and a capacitor
is discharged into the resulting electric
circuit. Due to the ionization and high
voltage, materials with inherent oxide layers
can be welded due to the cleaning provided
by the ionized atmo-sphere. Also, due to
the higher voltage, contact resistance is
not an issue as it can be with resistance
welding. With proper fixturing, wires down
to 0.005 can be butt welded. Smaller
wires can be welded to a plate.
Since there are no consumables, electrodes,
solder, or flux, the Arc-Percussive welding
process is easier to use and more cost effective
than resistance welding, soldering, brazing,
or crimping.
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