TIG/ GTAW Welding

Tungsten Inert Gas (TIG) welding is a high quality and versatile process. It uses the heat produced by an electric arc generated between a non-consumable electrode and the workpiece

close-up of TIG welding
Combining versatility with high quality and process stability

Tungsten Inert Gas (TIG) welding or Gas Tungsten Arc Welding (GTAW) is most commonly referred to as TIG welding. 

TIG welding is an arc welding process that uses a non-consumable tungsten electrode to generate a high-intensity arc that forms between the electrode tip and the parent material.

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How it Works

Where the arc makes contact with the workpieces the parent material melts and fuses to form a welded joint. Shielding gas is fed through the torch to protect the weldpool, adjacent material and the tungsten electrode.

The process can be used autogenously (without filler wire) but it is more common to add filler wire manually to increase weld strength and integrity.

Welds produced using the TIG process are usually the highest quality that can be achieved using “common” welding processes.

It’s capacity to be used when welding virtually any material, means argon is the most commonly used shielding gas. However,  far better results can usually be achieved by using shielding gas mixtures created for specific materials.

The main drawback with the TIG process is the low deposition rates coupled with high heat input; although this can generally be greatly improved with correct shielding gas selection.

Schematic of TIG process in operation
Schematic of TIG process in operation

Improving your welding speeds

We deliver a range of TIG welding gases under our SPECSHIELD®, STAINSHIELD®, PURESHIELD® Argon, and ALUSHIELD® families. Some of these mixes add helium, hydrogen or nitrogen to argon to achieve superior welding speeds and higher process stability. 

Selecting the correct shielding gas for your particular application will enhance virtually every aspect of the deposited weld. You will benefit from higher quality welds, fewer incidents and less rework effort. 

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