Welding processes and equipment

TIG/WIG

TIG/WIG uses a non-consumable tungsten electrode and an inert shielding gas to produce precise, high-quality welds. The module covers polarity, current type, electrodes, gases, parameters, applications and typical defects.

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Topic overview

TIG/WIG is arc welding with a non-consumable tungsten electrode in an inert gas. Heat is generated by a precise electric arc between electrode and workpiece; filler material may be added separately as a rod or the joint may be welded autogenously.

What the module covers

  • TIG/GTAW — complete module
  • Process principle
  • Where it is used
  • Equipment and torch
  • Key parameters
  • Typical imperfections
  • Polarity and heat distribution
  • TIG—guidance calculator
Educational content does not replace current standards, approved WPS/WPQR documentation or decisions by competent welding coordination personnel.