Purge Gas For Stainless Steel Welding. Inert Gas for Welding. If you have ever welded stainless steel pipe you know that purging the back side is part of the gig.
Plasma welding is less commonly used although it produces high quality welds especially if a key hole technique is used. If you have ever welded stainless steel pipe you know that purging the back side is part of the gig. Purging should be considered on any joint design sensitive to oxidation that leaves the weld root and cap exposed to the atmosphere.
6 mm of weld metal thickness has been depositedBacking gas shall be welding grade 90 nitrogen10 hydrogen mixture pure nitrogen or argonnitrogen mixture with not less than 5 nitrogen.
Penflex uses this chart as a reference of acceptability on all our seam welds and assembly welds. OxyGone is designed to make most installation jobs possible without a need for procuring extra equipment. Purge gas needed and the purge time. Back purging eliminates extra hours of work.