Provide electric current to a tungsten inert gas (TIG) welding torch using these machines. The current flows to an electrode in the torch to form an electric arc for creating welds on a workpiece. The machine's duty cycle rating states how long the machine can weld continuously at peak current before requiring time to cool down, given as a percentage of a 10-minute cycle. For example, a machine with a 30% duty rating can weld continuously at peak current for 3 minutes in a 10-minute cycle before needing to cool down.
TIG welding, also known as gas tungsten arc welding (GTAW) or Heli-arc welding, creates fast, clean welds on a wide range of materials without generating spatter, sparks, smoke, or fumes. It is ideal for welding surfaces that will be visible.