Aluminum TIG welds -art project
Tue, 31 Aug 2021 09:08:16 GMT
So, I have some material that I decided to do an "art" project. It's a miniature version of the Utah Monolith. It's 3"x3" x 15" and .040 5052 aluminum. Using an AHP AlphaTIG with a CK 9 torch and 7 gas lens Also, I have an SSC pedal upgrade for the machine and I only get about 1/2 the throw of the pedal (I had that same problem with the stock pedal -not sure if that is normal or if that is a defect with the machine). Machine is set to 65 amps (I think it's off by 30 ams, so 65 amps is 35 amps -I suspect this as I set the machine to 65 amps, but when I mash the pedal to the floor and have someone read the output off the machine, it's 35 amps). I am getting burn through at the end of the bead which is why theres some thick 'noogies' on some of the ends. This is after welding. I did do some grinding on the beads in a few places where I touched the tungsten to the work. Here is an edge, note the 'noogie' where I burned through then had to stack beads up. After welding one side, I turned the pulser on (30% on, 30% background, 85 amps total). And another edge where its about the best I can do. How can I improve here? Go faster? Cram more rod in? Slow down?Last edited by tigerstripe40; 12-03-2020 at 01:40 PM.James AHP 200X TIGMillerMatic 175DaytonaMIG 135Chinese O/A
Reply:Neat project! Wonder what the story is on the original, and now it’s gone. Just practice and more practice. If you took a grinder to it you will likely be surprised how good it will look. Carefully flap disk the welds until smooth. Last picture looks pretty good to me, but I don’t TIG a lot.Burt _____________________Miller Syncrowave 250Millermatic 211Miller 375 Plasma Cutter Hobart Handler 12010FtDrillBit.com
Reply:If the pedal is all the way down and someone is reading the amperage for you, it should read roughly what the max is set on the machine. It definitely shouldn't be 30 amps low. The fact that it happened with two pedals tells me something is wrong with the machine, or at least the display.As far as the beads go, I'm far from an expert on aluminum, but it doesn't look like you're going too fast....that's almost hard to do with aluminum. My limiting factor has been my feed hand and getting faster, smoother, and more consistent feeding filler in. Your project is a really good one for building up skills and I'll bet if you did another one just like it you'd get even better results. Keep at it!Check out my bench vise website: http://mivise.comMiller Syncrowave 250DXMillermatic 350P with XR AlumaProMiller Regency 200 with 22A feeder and Spoolmatic 3Hobart Champion EliteEverlast PowerTig 210EXT
Reply:That looks really good for .040 thick alum!Question is when you set to 200 amps on your display, do you only get 100 amps, or do you get full amps with it reading wrong? Is the machine still under warranty? At least you confirmed that both pedals deliver the same range.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:Originally Posted by shovelonThat looks really good for .040 thick alum!Question is when you set to 200 amps on your display, do you only get 100 amps, or do you get full amps with it reading wrong? Is the machine still under warranty? At least you confirmed that both pedals deliver the same range.
Reply:Originally Posted by shovelonThat looks really good for .040 thick alum!Question is when you set to 200 amps on your display, do you only get 100 amps, or do you get full amps with it reading wrong? Is the machine still under warranty? At least you confirmed that both pedals deliver the same range.
Reply:Originally Posted by tigerstripe40When it's 200 amps on the display prior to welding, when I hit the pedal all the way, it only shows about 170 amps on the display.
Reply:for practice i would get a good size chunk of aluminum and got back and forth welding a million beads. theres alot of videoes that can help but nothing takes the place of hands on practice. when i first started i kind of put the cart in front of the horse and tried welding 2pieces together before i knew how to run a good bead
Reply:tigerstripe40 - are YOU the one that's been planting these mysterious monoliths out in the desert?!
Reply:Originally Posted by jfk92tigerstripe40 - are YOU the one that's been planting these mysterious monoliths out in the desert?!
Reply:Originally Posted by cornchipfor practice i would get a good size chunk of aluminum and got back and forth welding a million beads. theres alot of videoes that can help but nothing takes the place of hands on practice. when i first started i kind of put the cart in front of the horse and tried welding 2pieces together before i knew how to run a good bead
Reply:Tigerstripe40,I'd remark about the beads from a slightly different point of view. My preference is to match my beads to the parent metal I'm welding. That would mean in your case the bead you're running is huge, maybe three times to the volume I'd set as my target cross section.The reasoning I use is the weld is little good if its heavier than the parent metal, and a 'round over' bead is adequate to join the fully fused edges of any parent metal (in aluminum). That means, from my point of view, the welds you're carrying are way to heavy.To scale them down so they 'fill but not overflow' the naturally formed V fillet of an outside corner I'd suggest the power be lowered, perhaps smaller tungsten and filler too?I agree with the remarks above about 0.040" being hard to get a proportional bead on, and I'd tend to practice these on thicker material before dropping down to that (super) thin material. I think your welds look pretty good for welding on 0.040"- when I do that thickness I use 1/16" tungsten and 0.030" or 0.023" filler wire. I can't do that weld by 'hand dip' I use a cold wire feeder (TIG gun) in order to control what I consider to be the proportionally scaled bead size.Just wanted to note the bead-to-parent metal scale idea in your questions about welding this thin.Cheers,Kevin MorinKenai, AK
Reply:Originally Posted by tigerstripe40Yeah, I have been doing that. Flat piece of plate, I can stack the dimes very nicely. Get on an edge like this and my welds look like what is pictured.
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