TIG Welding

TIG welding

Pipe elbow
  • Very clean, no spatter
  • Concentrated heat input, very low distortion
  • High-quality weld seams
  • Non-porous weld seams
  • Smooth, fine-scaled appearance of weld seam
  • Applicable with or without filler material
  • No crater cracks at beginning and end of weld seam
  • Preferred use in vacuum technology, pipeline and plant construction

During the process of TIG (tungsten inert gas) welding, also known as gas tungsten arc welding (GTAW), an arc is produced between a non-consumable tungsten electrode and a component. The melt bath is protected by an inert process gas or a gas with reducing gas particles. It is possible to work with direct current, a negative poled electrode or alternating current. The advantage of this welding process is the possibility to work with as well as without filler material and hence decouple the current from the filler. High-quality weld seams without notches or crater cracks at the beginning or end of the seam are possible. The welding speed is rather low compared to other welding processes. Thus, TIG welding is especially used for root passes or where the weld seam quality is more important than the welding speed. Fields of application are pipeline and plant construction, power plant construction as well as chemical industry.