Hydrogen Gas Used for High Temperature Welding
Hydrogen gas (chemical formula H2) is used in a rare welding method involving extreme heat called Atomic Hydrogen Welding.
Hydrogen transers heat very quickly. It extracts energy from the arc to the piece you're working on extremely quickly. Alloys can be melted without oxidized buildup or fluxes. Atomic Hydrogen Welding is employed when rapid welding is necessary. The flame generated by an arc connected to hydrogen gas reaches up to 400 degrees Celsius (7,232 degrees Fahrenheit, significantly higher than acetylene).
Because of the extreme heat transfer and precision required in hydrogen welding, it isn't practiced very often. However, it is in some cases the only way to achieve certain kinds of welds. The lack of oxidation and the minimal runoff and waste makes it highly attractive for skilled welders looking for a specialized weld.
If you are looking to incorporate Hydrogen into your welding arsenal, know the risks beforehand. Consult its Material Safety Data Sheet (MSDS) before engaging in the potentially dangerous activity. Be cautious. Stay safe. Know what you're working with.
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