Improvements introduced in the production of protective atmospheres based on rare gases and containing, at least, a gas does not inert, for welding and recharging steel. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the production of protective atmospheres based on rare gases and containing at least one non-inert gas, for welding and recharging steel in a protective atmosphere with a fungible electrode consisting of a wire of strongly alloyed steel, mainly nickel and chromium , for example, in stainless steel, characterized by the fact that the protective atmosphere is composed of: Helium: 20 to 90%; Hydrogen, free or combined with one or more elements other than halogens: 0.5 to 2%; possibly gases and/or vapors free of halogens but containing oxygen, possibly carbon, and possibly hydrogen, then reaching the proportion of the total of those gases and vapors and of hydrogen up to 6%; Argon: the rest, these percentages being indicated in volume. (Machine-translation by Google Translate, not legally binding)