409 ss help

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I have to butt weld two sheets of .135 409 together and my lee guy is telling me to spray instead of short circuit. Correct me if I'm wrong but I think spraying that will put way more heat into that. It's going in the plate roller after so not sure if warpage is that much of a issue.
Reply:"Lws"
Reply:Maybe some mig pulsed but no way full on spray for 1/8th" material.Miller Dynasty 200DXMiller Spectrum 250DMiller Millermatic 200Bunch of old blue dinosaurs....
Reply:Originally Posted by Cnc BrianI have to butt weld two sheets of .135 409 together and my lee guy is telling me to spray instead of short circuit. Correct me if I'm wrong but I think spraying that will put way more heat into that. It's going in the plate roller after so not sure if warpage is that much of a issue.
Reply:Thanks for the input! I will try sc, pulse, pulsed spray, and spray on Monday when the material gets to work and let you know the results. Also the welder I have at work is a miller 350p
Reply:The spray transition current is lower for stainless than for mild steel so it may work if you move fast. Given the machine you have I would use pulse spray with 95/5. 409 is sort of "in between" 300 series SS and mild steel, so you may have to adjust your pulse parameters a bit.JohnLast edited by Silicon-based; 08-04-2013 at 09:36 AM.Reason: Add infoA few weldersA lot of hammersA whole lot of C-clamps