This article introduces TIG welding as a welding process and clearly explains its mode of operation as well as areas of application.
- Noble and precise.
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Ideal for stainless steel and aluminium.
In the TIG process (TIG = Tungsten Inert Gas), the electric arc burns between the non-consumable tungsten electrode and the workpiece. The arc is very concentrated and can be guided very well. A separately supplied argon shielding gas protects the arc and the weld zone from exposure to outside air. If necessary, filler material is added manually or with a special cold wire feed.
Detailed information on choosing the right gas can be found in this article:
Which shielding gas for which welding process?
Steel, stainless steel, copper, titanium, and others are welded with direct current. The electrode is connected to the negative pole and ground to a point.
Aluminium, magnesium, and their alloys are primarily welded with alternating current to break up the oxide layer. The electrode is then blunt. During welding, a round to ball-shaped form is established. With modern inverter power sources, welding can also be done with a pointed tungsten electrode.
The advantages of TIG welding:
The simple handling and good controllability of the arc enable very comfortable and clean working. The low heat tinting of the workpiece, the narrow weld zone, the elimination of fluxes, and the spatter-free arc ensure clean, precise seams without slag inclusions and without rework.
Red by Lorch TIG welding machines:
Do you want to read more about TIG welding or get to know the other welding processes?
Here are the respective articles: