TIG welding, tungsten inert gas welding, is a so-called fusion welding process with the addition of shielding gas.
A tungsten electrode, which is temperature-resistant up to 3,380 degrees Celsius and therefore does not melt, heats the material via an arc. The material then liquefies. The shielding gas prevents chemical-physical reactions with the ambient air.
Depending on the process used, welding wires or rods are used as filler metals.
Compared with other conventional welding processes, the energy input in the TIG welding process is easily controllable. As a result, smaller as well as visually more appealing seams (hardly any penetration notches) can be produced.
Compared to laser welding, however, too much heat is still conducted into the component. This can lead to increased heat distortion or cost-intensive countermeasures.
Tungsten inert gas welding is a widely used welding process. It can be worked with and without filler metal. Above all, it is in demand because of its high seam quality.
For some years now, however, it has been increasingly replaced by modern laser technology.
At TM Lasertechnik, we use tungsten inert gas welding purely as a supplement to laser or laser hybrid welding.
Especially large-area material orders, for which TIG welding was the more economical choice, especially in the last years, are more and more carried out at TM Lasertechnik by modern, robot-controlled laser technology, the laser cladding.