16ME316/Advanced Welding Processes/T.Venkatajalapathi Welding 16ME316/Advanced
1 Atomic Hydrogen Welding Atomic hydrogen welding (AHW) is an arc welding process that makes use of an arc between two tungsten metal electrodes within an
atmosphere composed of hydrogen. Shielding is obtained from the T.Venkatajalapathi hydrogen.
The electric arc produced in the process efficiently breaks up the molecules of hydrogen that later recombine through an extreme release of
heat. 16ME316/Advanced Welding Processes/ Welding 16ME316/Advanced
2 Equipments Required 2 tungsten electrode.
Hydrogen gas cylinder with regulator and hose.
Electrode holder or torch.
300 V AC power supply machine with controller.
Filler rod if needed.
Processes/T.Venkatajalapathi 16ME316/Advanced Welding Welding 16ME316/Advanced
3
Atomic Hydrogen Welding
Processes/T.Venkatajalapathi 16ME316/Advanced Welding Welding 16ME316/Advanced
4 limitations Cost of welding by this process is slightly higher than with the other process.
Welding is limited to flat positions only.
Because of the high levels of heat produced in this welding process, welders need to be even more aware of the dangers they are exposed to.
Skilled welder is required.
Due to advances in inert gases AHW may be limited.
Hydrogen is highly inflammable gas so it should be taken care.
Processes/T.Venkatajalapathi 16ME316/Advanced Welding Welding 16ME316/Advanced
5 Applications Atomic hydrogen welding is used in those applications where rapid welding is necessary, as for stainless steels and other special alloys.
For most of the ferrous and non ferrous metals.
For thick as well as thin sheets or small diameter wires (2-10mm).
Can be applied almost to any metal, specially in light gauge metal,
special ferrous alloys, and most non ferrous metals and alloys.
Processes/T.Venkatajalapathi 16ME316/Advanced Welding Welding 16ME316/Advanced
6