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Pulse Arc Welding

Pulse arc welding uses a pulse arc welder and a non-consumable tungsten electrode to produce the weld. The weld area is protected from contamination by use of a cover gas (generally an inert gas such as argon or helium).  A filler metal is normally used, though some welds ("autogenous welds" - where two pieces of the same metal are joined via fusion) don't require it.

Pulse arc welding is a non-contact process and does not require the application of force to create proper part fit up; it produces high quality welds with minimal heat affected zone by generating arcs between the workpiece and the tungsten electrode, using the resultant heat to create the joint.

Unlike resistance or ultrasonic welding,pulse arc welding is capable of joining dissimilar metals