2 August 2019

Advantages and disadvantages of TIG welding

TIG welding process using a non-consumable electrode that contains 1 to 2 % thoria mix along with the core tungsten or tungsten with 0.15 to 0.40 % zirconia. The pure tungsten electrodes are less expensive but also carry less current but thoriated tungsten electrode carries high current and more desirable because they can strike and maintain a stable at with relative ease. Tungsten inert gas welding offers several advantages that account for its popularity and its use in agriculture and many other industries. Let us have a deep insight into the advantages of TIG welding in this article. 

Advantages of TIG welding:

  • It produces high quality and clean welds.
  • No slag is produced so welds are not weakened.
  • The weld is automatically protected by the inert gas during the welding process so welds are corrosion resistant, more ductile, and stronger.
  • This process can apply to any position of welding likewise horizontal, vertical or flat.
  • It can be performed by both automatic and manual technique.
  • It easily applied to the thin material and used for a wide range of metal thickness.
  • There is less distortion of the workpiece because of the small heat-affected zone.
  • Only the necessary amount of filler metal is added to the welding puddle so there is no spatter or sparks are produced.
  • Use one shielding gas mainly Argon for all applications.
  • In this process finishing process required little or less sometimes grinding or preparation before it can be painted.
  • It is the preferred choice in most intricate works, where the shape of each and every weld joint counts.

Disadvantages of TIG welding: 

  • It is a slow process.
  • A more complicated process so that highly skilled labour is required.
  • Less economical than consumable electrode for sections thicker than 3/8 inch.
  • Tungsten inclusion.
  • A welder is exposed to the huge intensities of light.
  • This process is also more expensive.
  • Sensitive to drafts.

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