Why ac current is most suitable for resistance welding?
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Electric resistance welding (ERW) refers to a group of welding processes such as spot and seam welding that produce coalescence of faying surfaces where heat to form the weld is generated by the electrical resistance of material combined with the time and the force used to hold the materials together during welding.
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The energy is discharged through a pulse transformer to the weld head. The resulting high peak current and very fast rise time is useful for welding very conductive ...
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