Pulsed Spray penetration tests

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Here are a few examples of what I can do with this thing..035 wire, 800 ipm (cranked all the way up) 98% argon, 2% o2.  Plate is 3/8"The side on YOUR left was welded with mill scale on.  On the right I ground the mill scale off both pieces.This one, I used 2 pieces of 3/8" plate spaced apart by a 1/8" tig filler wire.  I welded the wire in the groove by accident, so I pulled it out on both ends as I was welding.  Machine on 800 ipm again.  I almost welded the piece to the bench.This one was welded one pass 200 ipm vertical up on the left side.  3 passes vertical down at 400 ipm.  Penatration is about the same, but look at the bead profile.Pieces were cut on band saw, smoothed up with a flap wheel  then sanded with #600 by hand.  Sprayed on some wheel etching acid.Last edited by David R; 12-25-2007 at 04:45 PM.Real world weldin.  When I grow up I want to be a tig weldor.
Reply:Sorry for the question David, but when you say "with this thing", what thing are you actually refering to? Machine and amperage, if you would Thanks.
Reply:The thing is pulsed Spray..  JohnSMAW,GMAW,FCAW,GTAW,SAW,PAC/PAW/OFCand Shielding Gases.  There all here. :
Reply:Originally Posted by EnderSorry for the question David, but when you say "with this thing", what thing are you actually refering to? Machine and amperage, if you would Thanks.
Reply:Originally Posted by David RLast year I bought a Lincoln Invertec V350 pro.  It was Big Buck$.  The "Advanced Panel" was more than I could afford at the time.  SO last Friday I bought the panel.  I now can do pulsed spray Mig.  Its a whole new process to me.  At the lower settings its just amazing The puddle is fluid, but it welds like mig.  At the higher settings it behaves more like spray welding.Running at 800 ipm of .035, it is putting out about 335 amps.David
Reply:on the pieces where you welded a fillet on both sides, did you let the first weld completely cool before performing the second?
Reply:Originally Posted by Burniton the pieces where you welded a fillet on both sides, did you let the first weld completely cool before performing the second?
Reply:Good Demo... weld it like you own it
Reply:Do you think the heat from the first weld affected the penetration of the second?
Reply:Thanks for the demo David.  And all the effort to do the destructive cut-n-etch pics after.I'd say that the butt weld was the best of those demo runs.  Even and complete penetration.  The first T-joint was passable in penetration, but it was pretty narrow and finger-like in the penetration profile.  The last piece with the vertical-up vs vertical down 3-pass fillets shows not enough heta into the weld.  The beads are pretty big and full, but I'm really not seeing -any- penetration INTO the plates.  The fillets toes look like they are barely wetting into the plates, and that is about it penetration-wise.  I see ZERO penetration into the T-joint itself, so you effectively have two plates held together by the fillet toes and not two plates fused into one structure.  MHO.But if full-out 800 ipm is 335A on 0.035 solid wire, no wonder the joints look a little cold when running on 200 ipm, eh?Book says single-pass for 3/8 plate should be about 375A, give or take.  335A is a little shy, and 1/4 of that (200 ipm vs 800 ipm) is WAAAAY shy on the amps.Again, nice demo.I guess you could say you -like- the pulse MIG capabilities???How was that Octoberfest beer?  And what brand was it?
Reply:Originally Posted by MoonRiseThanks for the demo David.  And all the effort to do the destructive cut-n-etch pics after.Book says single-pass for 3/8 plate should be about 375A, give or take.  335A is a little shy, and 1/4 of that (200 ipm vs 800 ipm) is WAAAAY shy on the amps.I guess you could say you -like- the pulse MIG capabilities???How was that Octoberfest beer?  And what brand was it?
Reply:Originally Posted by BurnitDo you think the heat from the first weld affected the penetration of the second?
Reply:are you able to perform hardness tests on the different ipm welds? it will show some of the changes in mechanical properties that you can't see.
Reply:I am so buying an inverter multi process machine.  BTW I see the Sarnac bottle in the background, good stuff.Disclaimer; "I am just an a$$hole welder, don't take it personally ."
Reply:Originally Posted by qaqcare you able to perform hardness tests on the different ipm welds? it will show some of the changes in mechanical properties that you can't see.
Reply:Either an XMT 350, or what you have, all depends what my LWS will do for me.Disclaimer; "I am just an a$$hole welder, don't take it personally ."
Reply:I have never used the XMT, but mine does all it sez and MORE.   AND you can get the advanced panel!  PULSED SPRAY MIG!!DavidReal world weldin.  When I grow up I want to be a tig weldor.