Please Post Tig Welding on Sheet Metal

admin

Im going to attempt my first tig welding on some 22gauge sheet metal this coming monday and id like to see what this is 'suppose' to look like. I have little experience with tig welding at all, but im decent (so id like to think). Im concerned it will be harder then 'thicker' material (3/16'') as it would be easier to burn through with the arc. Input and picture please!edit - this will be steel 22gauge using a miller econotig with 75 argon/25 co2 gasThanks,      Rob
Reply:only use 100% argon when tig welding
Reply:Yeah, that C25 won't work. Your tungsten will not last 2 seconds.Miller EconotigCutmaster 38Yes ma'am, that IS a screwdriver in my pocket!
Reply:argon ONLY!and 1/16 tungstonChuckASME Pressure Vessel welder
Reply:I did some 23 guage,  Its tough.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:thanks for the input on the gas
Reply:I don't have anything that thin..Or I would just for laffs...Sorry.....zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:22GA mild steel is pretty easy with an EconoTIG. You are gonna have her turned all the way down though. I've done a good bit of 22ga stainless with mine, and it's a bit hairy. It's ok when I've got a heat sink behind the weld, but anywhere I can't get a sink I have to switch to AC to reduce the heat input. With stuff this thin you want a really good tight fit with no gap. I usually just fuse thin sheet like that with no filler. You'll need a little though if the fit isn't perfect, I prefer .040" filler. As you know I'm sure, just make quick short 1" or so beads, and skip around. I'll try to get a few pics for you today. They look just like regulat TIG welds, only tiny, maybe 1/8" wide.Miller EconotigCutmaster 38Yes ma'am, that IS a screwdriver in my pocket!
Reply:It's hard.  I've done 23g before and it was a very fine line between melting point and blowing through.  Good luck.
Reply:Try this on the thin stuff . . . Start your puddle away from the edge and dip; now drive the puddle to the edge while dipping again; now you can weld the butt without burning through (keep dipping and keep it moving at a fast pace -- the dips will cool the puddle and give you enough material to prevent a hole).The first dips create a slightly thicker area of metal at the puddle you can work with without burning through and you go from there.I'll try to post some pics tomorrow if I can get a few minutes to set some up and take a pic, parameters, etc.My TIG welding sucks but I've done a lot of practice with the thin stuff (it's cheaper as practice scrap).Favorite right now is a Miller Syncro 200.Tons of tools and I blame at least one of them when things don't go right.
Reply:It's easy as pie if you have a good tight fit up. There really is no sense in using filler at all. That is, unless you are a purist type autoboy guy who does the planishing and wheeling.Miller EconotigCutmaster 38Yes ma'am, that IS a screwdriver in my pocket!