What is TIG welding?

TIG Welding: This Is How It Works

In TIG welding, the required current is supplied via a tungsten electrode, which is temperature-resistant and does not melt. This electrode emits an arc that heats up and liquefies the material. There is a nozzle for shielding gas around the electrode. This protects the heated material from chemical reactions with the ambient air. The noble gases argon, helium or mixtures thereof are used for this purpose. The inert, i.e. non-reactive, gases prevent chemical reactions with the liquid weld pool and the heated material. This ensures high-quality weld seams.

As the tungsten electrode does not melt, in TIG welding the filler material is fed in by hand or in mechanized form by an external wirefeeder.

This Is How a TIG Welding System Is Structured:

(1) Mains connection

(2) Power source

(3) Hosepack

(4) Grounding cable

(5) Welding torch

(6) Ground terminal

(7) Workpiece

(8) Filler metal

(9) Shielding gas

COLD WIRE TIG WELDING

A cold-wire feed increases productivity: The welding speed increases and the filler metal is fed precisely and evenly to the weld pool. This allows even less-experienced welders to achieve outstanding results.

TIG HOT-WIRE WELDING

TIG hot-wire welding was developed from cold wire TIG welding. In TIG hot-wire welding, the filler metal is heated. This has various advantages: The deposition amount and rate increase, the welding speed rises and the fusion is reduced.

ARCTIG

The ArcTig welding process is a TIG process variant for mechanized joint welding. It allows for an excellent weld seam appearance, reliable full penetration welding of the root pass and very high weld quality. Due to the increased welding speed and reduced work to prepare the seam, ArcTig also makes the whole welding process more cost-effective.

CLADDING

Cladding is a process in which the components are coated with special alloys in order to extend their service life significantly. This coating is carried out through mechanized electro-surfacing. Fronius Speed Cladding makes the coating process up to three times faster and more efficient.

ORBITAL WELDING 

The basic setup of orbital welding equipment includes a fixed pipe and a moveable TIG welding torch/welding head that moves around the pipe. The moveable orbital welding head is also referred to as a spot welding gun. The orbital welding technique is useful wherever consistent seam qualities must be attained under controlled conditions. Consequently, the main usage areas for this welding technology are pipeline construction, the food industry, and the chemical industry. With the orbital technique, it is not only possible to produce pipe-to-pipe connections, but also to weld pipes into pipe baseplates.