TIG welding is also very versatile and produces the highest quality welds. It also takes considerable practice and is least productive. TIG uses an torch with a tungsten electrode. Argon is used as a shielding gas to protect weld and tungsten. An arc is struck between the tungsten and the work and a short gap is maintained. As the weld progresses, filler wire is dipped in the weld pool. Power source is constant-current DC or AC depending on metal used.
All TIG Welders are now Inverter welders. The advantages of inverter welding units over traditional transformer-rectifiers are many. Inverters are more portable and lighter weight, making them easier to maneuver around the job site. In addition, inverters offer high-quality, multi-process welding capabilities so that one machine can handle Stick, MIG, TIG, FCAW, arc gouging and even pulsing. To increase efficiencies and cut down on the money your company is spending on electricity related to welding, an inverter is an attractive option. In fact, because of their efficiency, these machines can provide substantial savings in utility costs.
Tig Welders from WIA, Uni-Mig and Dynaweld.