Tig Welding

What is Tig Welding?

Tig welding (Tungsten Inert Gas welding) is probably the most versatile arc welding process. It’s less complex to master, but it can be a slow process. Tig welders also tend to be more expensive.

There are two types of Tig welding equipment:

  • DC output welding current (cost-effective method used for most applications including the Tig welding of steel, stainless steel and copper)
  • AC/DC output welding current (more costly method used for Tig welding aluminium and aluminium alloys.

TIG welding works by striking an arc between a tungsten Tig welding electrode and the workpiece. A separate Tig welding filler wire can be added to the weld pool as necessary.

The weld pool is protected from oxidisation by pouring an inert welding gas (usually argon) over the weld pool. This welding gas is usually turned on and off by the Tig welding machine.

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