widening the pool with stainless tig?

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Is there a way to widen the pool with stainless while still maintaining a low amp setting?  When welding thin gauge tube I find if I crank up the amps to get a wider pool it is too hot, but if I turn it down where it is not too hot the pool is just minute and does not cover any are at all.  Just curious if there is a technique I could use to make the pool a bit wider while maintaining a lower amperage setting.
Reply:You can weave side to side a little to make a wider puddle.Airco Ac/Dc 300 HeliwelderMillerMatic 200 (stolen)Miller Maxstar 150STLMiller AEAD200LE (welding and generating power) Hobart MIG
Reply:Yeah which is what I ended up doing...what about cranking the amps a bit and increasing argon?  Would that help to keep from burning the stainless too hot?
Reply:Nothing else that can be done other than weaving?
Reply:Kick in your high speed pulse to about 200pps. That tends to flare your DC arc.Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.
Reply:Gotcha, so get a more expensive welder   I don't have anything cool like that on my current little tig.  I have the option for foot pedal, torch control, amps and varying post flow.  That is about it!
Reply:use the smallest tungsten diameter you can, but also narrow up the angle on the tungstenworth a shot.  It's free and you don't have to buy a new machine to try it out.
Reply:Thanks man!  It is definitely worth a shot!
Reply:OscarNothing like scientific photo-data to clear the air.The etched surfaces tells all.This will change the way I weld several reoccuringweldments.sarg isn't running stringer for analysis, so this info maynot address his technique and joint condition; but it has given me options, I didn't know were so easily available.THX  -  Opus
Reply:try dipping into the puddle then quickly pulling away - you will notice though that the puddle doesn't like that and it will usually bounce or vibrate towards your tungsten. As well, increase voltage while decreasing amperage - amperage affects penetration while voltage affects wash out and bead contour.46’ sae30047’ sa200 w/Wisconsin VF451’ shorthood56’ shorthood56’ shorthood68’ redface69 redface07’ ranger 305G13’ sae300Inconel/Hastelloy – SS – Duplex – Chrome/Carbon Tig – F3Downhand – STT/RMD – F3F4 – B Pressure
Reply:Originally Posted by ThortonAs well, increase voltage while decreasing amperage - amperage affects penetration while voltage affects wash out and bead contour.
Reply:Was kind of wondering the same.  Mine is a pretty basic tig.  I guess I will try the tungsten sharpening first and go from there the next time I am welding.  Hoping to get some done this weekend!  Getting very close to having the hot side done on the turbo kit.  Just trying to get it astetically pleasing even though it will be coated.
Reply:Originally Posted by KelvinHow can you "increase voltage" with TIG? By increasing arc length?
Reply:Oscar, do you have a link where you pulled that info?I've seen some stuff showing blunt vs sharp grinds before, but nothing that clear and concise..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by DSWOscar, do you have a link where you pulled that info?I've seen some stuff showing blunt vs sharp grinds before, but nothing that clear and concise.
Reply:the "colorful" one is from arc-zone.The other two I found via Google.
Reply:Now that I think about it, I do think the black-n-white pic comes from the miller handbook, which I believe I mention in a different thread I posted in about 3-4 weeks ago.
Reply:Originally Posted by OscarNow that I think about it, I do think the black-n-white pic comes from the miller handbook, which I believe I mention in a different thread I posted in about 3-4 weeks ago.
Reply:Use pulse...Aa high blast of current will wet the puddle out quite wide, and the pulse will allow you to put even Less heat into the work. I do this at work anduse a very sharp tungsten tapered as long as 3x it's diameter. If I want the weld to wet out wider, I turn the current up.Welding/Fab Pics: www.UtahWeld.com
Reply:use a shielding gas with 2-5% hydrogen, automatic volts increase and puddle wideningExperience is something you get right after you need it
Reply:Increasing the gap seemed to help some combined with needle sharp tungsten.
Reply:Originally Posted by MikeGyverUse pulse...Aa high blast of current will wet the puddle out quite wide, and the pulse will allow you to put even Less heat into the work. I do this at work anduse a very sharp tungsten tapered as long as 3x it's diameter. If I want the weld to wet out wider, I turn the current up.
Reply:A tungsten with a sharp point and a longer taper will produce a wider puddle, to emphasize what sarg said.