Preparing a protective gas mixture for arc joining

Details Preparing a protective gas mixture for arc joining Preparing a protective gas mixture for arc joining

2008-06-17

2008-06-17

Langel, Wayne A. (Department: 1793)

Electric heating

Metal heating

Nonatmospheric environment at hot spot

C219S075000, C219S13700R, C252S372000

Reexamination Certificate

active

07388170

ABSTRACT:
This invention provides a method for on-site production of a protective gas mixture for arc joining, in particular for arc welding. Gaseous argon is removed from a liquid argon supply and helium is added to the argon, and a doping gas premix which is prepared separately on-site is added. Various combinations of argon, helium and the doping gas premix are supplied via a protective gas supply device which supplies multiple workplaces with different gas mixtures without the need for specialty gas mixing equipment.

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