SC on 22 ga.

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Just had enough time to knock this out- PM255, .035 L50, 'steel'mix. t-joint horizontal .22 gauge is the thinnest material I had also used tin snips to cut so the fitup is bad. Weld is not done well, but I was under time pressure and would be using a different gasmix if I were going to really do some 'sheet'metal welding. Polarity is REP, the L-50 wire is a 'solid' wire after all. Burn thru happened when tacking- my response was to lower voltage. Attached Images"after a long day of doing nothing...its gooood to kick back" Pumbaa
Reply:Not to bad man. What transfer mode where you in? From the looks of the pic and your previous posts I'll guess it's pulse spray...or really carefull normal spray? I've only used short circuit on small stuff, I don't believe the schools Powerwave 455's have a pulse compatability. If those are pulse spray, how does that run on thin stuff? Anyway, one thing that makes a good weldor is that the weldor knowns what to do when something undesireable happens!Lean mean TIG weldin' machineSquarewave 175
Reply:Originally posted by Customwelds Not to bad man. What transfer mode where you in? From the looks of the pic and your previous posts I'll guess it's pulse spray...or really carefull normal spray? I've only used short circuit on small stuff, I don't believe the schools Powerwave 455's have a pulse compatability. If those are pulse spray, how does that run on thin stuff? Anyway, one thing that makes a good weldor is that the weldor knowns what to do when something undesireable happens!
Reply:22g is very thin for mig welding. Fit up of parts is critical along with the proper settings of voltage and wire speed in creating good welds. I have done much mig welding of 20g stainless, steel and galvanized and believe me I have seen my share of guys struggle on corner welds. Good luck if you can get good on the thin stuff you'll do good on the thicker.J P Streets Welding LLC
Reply:They are a little older. They don't really have the extra's on the wirefeed stuff, but they are really nice! I will have to check for pulse etc today. I'm leaving here in a second when I'm sure my stomach is okay with me going! lol. I'm pretty lucky to be at the school I am in, my welding teacher treats me like I'm a son almost, one of the big suits used to be the welding teacher, so we get good stuff . We have powerwave 455s, a CNC plasma cutter, a big older handheld plasma, a power roll, hydro shear and press break, track torch, O/A rigs, older buzzboxes, one aluminum MIG machine, 3 older idealarc 300 amp TIG machines, and another big 600 amp powersource. I'm sure that's leaving s ome out too! I love it!Lean mean TIG weldin' machineSquarewave 175
Reply:PlanetX22 ga. is a little thin for an .035 wire. An .030 or .023 would be a much better choice. For an .030 wire try around 15 load volts and 90 IPM. BTW, your C-15 that you use is a much better choice for this thin material then C-25, because the C-15 is a lower energy short circuit transfer shielding gas. I don t know the out put voltage range on your PM 255, but since you are using this lower energy gas mix you might be able to drop your voltage down into the 14 volt range which should tighten the arc up, and produce a lower energy metal transfer that will help reduce burn thru problems.ESAB Migmaster 250 Hobart Ironman 230Multimatic 215TWECO Fabricator 181i & 211iHH125EZ - nice little fluxcore only unitMaxstar 150 STH - very nice
Reply:X, I looked today at our powerwaves, they don't even have pulse! We have powerwave 455's with a Powerfeeder control board. It has settins for GMAW, SMAW- crisp, SMAW soft, FCAW, and stuff like that. No pulse or surface tension settings or anything special like that.Lean mean TIG weldin' machineSquarewave 175
Reply:Custom, no big deal, still it would be cool just to see what this surface tension stuff looks like in real life.Dan, the .035 wire is supposed to be good down to 20 gauge, which though bigger than 22ga, its kinda sorta close. Besides 16-18 ga is about the thinnest I can forsee migging. I do have some .30 wire, but no liner , perhaps I will be motivated to aquire one if the .035 fails utterly.Welding only steel now and maybe stainless in the near future, this second gas mix, is what I call a 'low' energy mix. Had to order it though, darn salesman kept trying to sell me a tri-mixI have never really tried to see if the PM255 is capable of producing 14volts- but will know soon. Jerry, if I had a shear making practice parts would be a snap."after a long day of doing nothing...its gooood to kick back" Pumbaa
Reply:Here is another go at some 22ga sheetmetal welding. This time using a lapjoint setup-welding in flat position. Still using .035 wire. WFS 50 and 13.7V plus new 'low' energy mix.A note about voltage, machine (PM 255) was set at 14v , but display read 13.7v at end of weld. Machine will hold numbers almost long enough to take a look-this time I looked fast Here is the first shot. Attached Images"after a long day of doing nothing...its gooood to kick back" Pumbaa
Reply:Because Chuck is so generous with pic space , here is yet another from a 'sideways angle' help gives an idea of how thin this tin is... Attached Images"after a long day of doing nothing...its gooood to kick back" Pumbaa
Reply:This last shot shows the melt-tru on the backside. Time to hook up the .030 wire I guess. Attached Images"after a long day of doing nothing...its gooood to kick back" Pumbaa