Short Arc with 98/2

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.035 wire, 100, 200, 300 and 400 ipm.  98%argon, 2% O2.  Wire speed was set, I turned the voltage dial so I had a good consistent short arc like I would get with any other gas.  I chiseled the first bead with a 2 lb hammer.  NO penetration.  Mill scale was ground off completely.Note the black around the beads.  Oxidation? I  varied my travel speed to try and flatten them out.  nuff said.David Last edited by David R; 12-29-2007 at 05:36 PM.Real world weldin.  When I grow up I want to be a tig weldor.
Reply:Excellent illustration of what 98/2 cannot do. Thanks David!John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:LOL I like the first bead how it peeled off, ive never seen that before!Nothing Ever Got Done By Quitting, Never Give Up.
Reply:Pretty amazing what a change in shielding gas can do.  Thanks for taking the time to label that myth "Busted".
Reply:Great show Dave and Thanks for taking the time to show this. You have always contributed good info with results to this site and I thank you for this.Didn't willy say this gas was best for small 110 mig where the weld looked tigged  . sure doesn't look like that to me.   Again thanks Dave.Miller DVI2Lincoln Precision Tig 225Thermodynamics Cutmaster 38Everything else needed.
Reply:Good photo of a weld bead.But you cannot really make any evaluations by running multiple beads on a flat thick plate.The best way to do any testing is to make plates that have a 20º beveland tack them together before welding the groove.Then you can measure the bead width,root, and profile of the top of the weld. It is called a weld coupon.Another problem with doing multiple welds on a unprepared flat plate is that as the plate begins to heat up each succsessive weld starts to penetrate and flatten out more and more. Hard to get consistancy as far as settings and adjustments.That brown dust around the heat effected zone (HAZ) is caused from shielding gas pressure being a little high. The rainbow colored oxides are formed at about 975º .Shielding gasses being a seperate issue.BTW Thats Argon/Co2,  not argon /O2 Hope this helps.Last edited by Donald Branscom; 12-29-2007 at 07:48 PM.
Reply:Originally Posted by David R.035 wire, 100, 200, 300 and 400 ipm.  98%argon, 2% O2.  Wire speed was set, I turned the voltage dial so I had a good consistent short arc like I would get with any other gas.  I chiseled the first bead with a 2 lb hammer.  NO penetration.  Mill scale was ground off completely.Note the black around the beads.  Oxidation? I  varied my travel speed to try and flatten them out.  nuff said.David
Reply:Originally Posted by William McCormick JrDid you read both of the pages I posted in the other topic?
Reply:Originally Posted by Alan NWhy should anyone bother?  If it's from you it's BS!It is just so amazing that you, a self proclaimed genius, are the only one who knows all this unconventional crap.
Reply:Originally Posted by Alan NWhy should anyone bother?  If it's from you it's BS!It is just so amazing that you, a self proclaimed genius, are the only one who knows all this unconventional crap.
Reply:I still cannot get over how that bead peeled off like it did, i want a bead of weld like that i can carry in my pocket. Hey David R maybe you could mass produce them and sell them on ebay or something lol.Nothing Ever Got Done By Quitting, Never Give Up.
Reply:Originally Posted by David R.035 wire, 100, 200, 300 and 400 ipm.  98%argon, 2% O2.  Wire speed was set, I turned the voltage dial so I had a good consistent short arc like I would get with any other gas.  I chiseled the first bead with a 2 lb hammer.  NO penetration.  Mill scale was ground off completely.Note the black around the beads.  Oxidation? I  varied my travel speed to try and flatten them out.  nuff said.David
Reply:Originally Posted by Doug247I still cannot get over how that bead peeled off like it did, i want a bead of weld like that i can carry in my pocket. Hey David R maybe you could mass produce them and sell them on ebay or something lol.
Reply:Go to User CP and update your buddy/ignore list...This is what I get when see Mr. McCormick's post now."This message is hidden because William McCormick Jr is on your ignore list."Millermatic Passport PlusMillermatic 200Millermatic 350P with PythonXMT 304 /w S-64 feeder and 12RCDynasty 300 DXVictor O/APremier Power Welder for my trail junk.
Reply:Ok Willy I ned to put this question to you. Why is it that when I ask anything about this gas from people who know their stuff and welders working in the field all their lives do I get the respones like I am out to lunch. I mean I can see how pure argon and 98/2 would work for sheet metal and would make it easy for just about anyone to weld sheet metal with at least good looking results but it not the right gas for this process. CO2 is not recommended by it does fall in the list of proper gases for sheet metal.May we just need some of you space technology material to practice welding on, then we might be able to produce the wonderful looking welds you do.Also the pic you posted of the tank rack is the same and only picture you ever posted on the topic this year and last year. I printed the pic off and showed it around to anyone who would look. No one believes that 98/2 welds.Miller DVI2Lincoln Precision Tig 225Thermodynamics Cutmaster 38Everything else needed.
Reply:Originally Posted by crawlerGo to User CP and update your buddy/ignore list...This is what I get when see Mr. McCormick's post now."This message is hidden because William McCormick Jr is on your ignore list."
Reply:David R ..you got the results i figured you would...great test...
Reply:Hey William,What gas do you recommend for welding up those tinfoil hats?Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:Originally Posted by jamlitOk Willy I ned to put this question to you. Why is it that when I ask anything about this gas from people who know their stuff and welders working in the field all their lives do I get the respones like I am out to lunch. I mean I can see how pure argon and 98/2 would work for sheet metal and would make it easy for just about anyone to weld sheet metal with at least good looking results but it not the right gas for this process. CO2 is not recommended by it does fall in the list of proper gases for sheet metal.May we just need some of you space technology material to practice welding on, then we might be able to produce the wonderful looking welds you do.Also the pic you posted of the tank rack is the same and only picture you ever posted on the topic this year and last year. I printed the pic off and showed it around to anyone who would look. No one believes that 98/2 welds.
Reply:Originally Posted by SundownIIIHey William,What gas do you recommend for welding up those tinfoil hats?
Reply:...and it usually looks better, is a much more flexible weld that I can hacksaw, file and drill. I can beat a piece tacked on one side, stretch the tacks and base metal, back into place, and finish welding it.I have come across excessive hardness in welds done in CO2. The surface just gets to hot, and for whatever reason, the surface cools to quickly causing a very hard weld.I find that the tacks I do with 98/2 are bizarrely hard to break.
Reply:You CAN'T change the tensile strength of a given rod or wire by using a different gas willy!   The fundamental purpose of shielding gas is to keep the nitrogen and oxygen in the atmosphere out of the molten weld pool as it cools.
Reply:Willy, are you that big of a round head ????? the test shows you are full of crap.. save the space.....
Reply:Great demo.Just to play devil's advocate... ( not that I believe a single word that William says )... How hard is it to change polarity on your welder David?Figure, cover all the angles... RP and SP.And some thinner metals...I can't join the 'spray arc club'... a mm135 just ain't got the horsepower.  But I'll stick to burning CO2 and 0.023 wire... I know it works.