TIG Welding with Thoriated-Free Tungsten Electrode
TIG welding with a reduced tungsten electrode uses environmentally friendly, non-radioactive rare earth oxides as emission carriers. This ensures a stable arc and reduces health risks.
Physicochemical mechanism of action
TIG welding uses an electrode made of tungsten that is depleted of rare earth oxides. These emission materials enable stable arc formation without radioactive materials. The depleted tungsten electrode has a longer life and improves weld quality.
Metallurgical relevance & risks in welding
The use of rare earth oxides instead of radioactive materials minimizes health hazards for the welder. It also reduces the potential for environmental damage. However, a lack of emission material can lead to arc instability and poorer welding results.
Workshop practice & action instructions
Use tungsten electrodes with rare earth oxides for stable TIG welding. Make sure the electrode is regularly depleted and that sufficient emission material is available. A lack of depletion can lead to arc problems.