TIG Welding

Simple Guidelines on Using AC/DC TIG Welders

9 Nov , 2016  

TIG welding is a skill that needs time and a considerable amount of practice to be developed. It requires patience and practice. TIG welding is generally used to weld metals alloys like copper, stainless steel and Titanium and it can also be used to weld two dissimilar metals. This process is highly useful for tricky welds and typical welding shapes like S-shapes, curves, and corners where the welds are highly visible and accuracy and finish are required. It creates high-quality welds and a wide range of metals can be welded with it. 

Some tips and hints are mentioned here related to AC/DC TIG welding.

  • The positioning of the torch is highly important is TIG welding. For different welding angles, that torch has to be angled at different levels so that it does not penetrate the metal. There can be butt welds, lap welds, corner joints, and T-shaped welds and the torch has to be adjusted according to the angles.
  • To improve the arc starting, the smallest diameter sized tungsten should be used for the amperage. The electrode size should be similar with the collet size.
  • The torch and tungsten should be of premium quality and one should not compromise with them.
  • Check and tighten all the connections including the gas ones and use the 100% Argon gas for shielding purpose as it provides the best results.
  • While welding Aluminium, one should use AC current and a ceriated, 1.5% lanthanated tungsten. While welding steel one should use DC current with straight polarity with 2% thoriated tungsten that is pointed enough.
  • One should try to use a push technique with the welding torch because with push technique the gas and the electricity can be easily regulated.
  • While welding a fillet the leg of the weld should be equal to the thickness of the welded parts

While keeping these small things in mind one can assure that the welds created through an AC/DC TIG welder are of high quality and fulfil the purpose of the welding.


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