Dialing in for MlT

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Tried the Mig like Tig Technique for the first time  (thanks ZTFab and others for the great inspiration). Needed a little bit to dial in my machine. Seems like ZTFabs voltages are lower then it works for me (or the estimation of the steps to voltage for his welder are a little off).Did this weld with 0.30 wire,  82/18 gas 17cfm, 150lpm, 18V on 0.168 mild steel.Do you think setting is ok or little bit too cold? Any more hints?Found out that the dimes get more "waves" (no smooth surface) when the voltage is too low = too cold i asume.I did read that he difference induction wise between machines does matter. I can change this setting too, any ides what it should change and what effect it will create?When i get a little time i will try to put some of the test pieces in my new 50T press and sees if and what breaks. Curios if there will be a difference between normal and stag of dimes weld. Attached ImagesLast edited by tomelgato; 04-03-2013 at 01:17 PM.Lorch Saprom S3, Lorch V24, Hypertherm 65
Reply:Hmm, nobody!? So i assume the weld looks ok. I know that my question "too cold" is not so clear, the weld doesnt look that bad. But when i do the "-" part of the "e" (im doing it not exactly like that, but close) the weld looks cold to me, its covered by the swing motion afterwards.Will try to make more pics todayLorch Saprom S3, Lorch V24, Hypertherm 65
Reply:The thread title may be misleading. I thought you would have something here related to Massachusetts Institute of Technology. Nope. Just looking to lay some styled beads. I'm content to mig like mig and tig like tig.Lincoln Precision Tig 185Lincoln Power Mig 256Hypertherm PM 45Everlast 140STSmith O/A
Reply:Lol, yeah i thought the same when i added my post today, but too late to edit  For M.I.T. im a little bit too old. For me its more like a hey, i can do it too. A perfect mig weld is very nice and strong, a sprayed one even nicer. But i have to admit, my tig like mig tries came out nicer then my tig welding (which i started recently). And this technique has one advantage. Youre forced to read the puddle very carefully. For some applications it looks nice, especially when you have no tig at hand. I think i will not do all welds like this, but some... maybe Lorch Saprom S3, Lorch V24, Hypertherm 65
Reply:The picts aren't the greatest. It's tough to really tell much of anything from the lack of reference and the pitch black on one side..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:To me, the welds do look cold. This is an outside corner, and you seem to have a good bit of metal in there. Most everything I build is for myself, but I'll admit to opting to tig weld something that would be perfectly fine with mig or stick just because it looks nicer. I don't think I'm cut out for the mig like tig race. The idea of intentionally welding on the cold side for looks doesn't work with what time I spend in the shop. But I'll probably be messing around with this mig like tig thing eventually.Lincoln Precision Tig 185Lincoln Power Mig 256Hypertherm PM 45Everlast 140STSmith O/A
Reply:They are too cold, made some more tries. Better pics will follow Lorch Saprom S3, Lorch V24, Hypertherm 65
Reply:Voila, here are the pics Corner joints on 0.120 mild steel19V 157ipm, 19.5V, 157ipm, 19.5V 177lpm, 19.5V 197lpm, 19.5V 217lpm Attached ImagesLast edited by tomelgato; 04-05-2013 at 04:45 PM.Lorch Saprom S3, Lorch V24, Hypertherm 65
Reply:20V 217ipm, 20.5V 157ipm, 20.5V 177ipm Attached ImagesLorch Saprom S3, Lorch V24, Hypertherm 65
Reply:0.160 mild steel18V 150ipm, 19V 197ipm, 19.5V 177ipm, 19.5V 236ipmThe last pic is 19.5V 177ipm - left side e technique, right side other way round (e upside down) Attached ImagesLorch Saprom S3, Lorch V24, Hypertherm 65
Reply:And finally some open corner on 0.160 mild1st pic is the sample i started this thread with, cleaned up and little bit more light 18V 150ipm, 18.5V 157ipm, 18.5V 177ipm, 19V 157ipm, 19V 197ipm Attached ImagesLast edited by tomelgato; 04-05-2013 at 04:47 PM.Lorch Saprom S3, Lorch V24, Hypertherm 65
Reply:To compare a normal mig weld on .160 mild.Left: 24.2V 469 ipmRight: Pulse 26.7V 425ipmNobody can say normal mig doesnt look nice Btw. on all these samples i didnt care for endcrater, just stopped  Attached ImagesLorch Saprom S3, Lorch V24, Hypertherm 65
Reply:That's better then the other "poser" welds.Tim Beeker.
Reply:Had some time for posing today Think i dialed it in quite well. Played little bit with inductance settings. Lower inductance makes it worse (more splatter), little bit higher made a wider sweet spot.Still wonder how to get dimes with smoother surface. Attached ImagesLast edited by tomelgato; 04-06-2013 at 11:36 PM.Lorch Saprom S3, Lorch V24, Hypertherm 65
Reply:Originally Posted by tomelgatoTo compare a normal mig weld on .160 mild.Left: 24.2V 469 ipmRight: Pulse 26.7V 425ipmNobody can say normal mig doesnt look nice Btw. on all these samples i didnt care for endcrater, just stopped