New arc-welding wire feeders place the brains inside the welding system, allowing manufacturers to better manage weld quality, improve consistency, and reduce setup and cycle time. The simplest wire feeders for arc welding control wire-feed speed (WFS), voltage, wire inch (to feed the wire forward while it remains electrically cold) and gas purge (to remove atmosphere from the gas-metal-arc-welding (GMAW) gun before welding). There's a time and place for the simplest feeders - usually for operations with highly experienced welders.
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