Effect of helium gas on arc characteristic in gas tungsten arc welding.

@inproceedings{Hiraoka1985EffectOH,
  title={Effect of helium gas on arc characteristic in gas tungsten arc welding.},
  author={Kazuo Hiraoka and Akira Okada and Michio Inagaki},
  year={1985}
}
Effects of helium gas on the maximum arc pressure and on the critical travel speed to melt a base metal were investigated in GTA welding.Results were obtained as follows;(1) The critical speed in helium (He) gas arc is much higher than in argon (Ar) gas arc. Heat input per bead length at the critical speed in He gas arc is lower than in Ar gas arc. This fact is understood because distribution of a heat source in He gas arc is more concentrative than in Ar gas arc.(2) Electrode geometry is… CONTINUE READING