Atomic hydrogen welding
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“AHW” redirects here. For airline in Kharkiv, Ukraine, see Aeromist-Kharkiv.
Atomic Hydrogen Welding (AHW) is an arc welding process that uses an arc between two metal tungsten electrodes in a shielding atmosphere of hydrogen and without the application of pressure. Shielding is obtained from the hydrogen. Filler metal may or may not be used. In this process, the arc is maintained entirely independent of the work or parts being welded. The work is a part of the electrical circuit only to the extent that a portion of the arc comes in contact with the work, at which time a voltage exists between the work and each electrode.
[edit] Sources
- Welding Handbook Vol. 2 Library of Congress number 90-085465 copyright 1991 by American Welding Society
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