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I don't do much GMAW work, but a job has come up for Monday where I'll need to drag out the suitcase for an hour or so. Up until now I'd been running no-name E71T-1M wire, so I have little experience with solid wire, and none with it vertical up. Looking for any helpful info related to the following.My customer is a local dealership who's installing a 6.1L Hemi conversion into an '11 Jeep Wrangler. There are two motor mounts provided by the kit manufacturer which need to be welded to the inner framerails. All welds will be lap welds. The dealership knew nothing about which weld process to use. I called the kit manufacturer's technician, who installs these kits at their location out west, and he said he used "mild steel MIG wire."I am now set up with a 12.5 lb roll of Lincoln's L-56 in .035. I'm running this in a Suitcase 12RC powered by an XMT 304. Gas is C25 at 25 cfh. Lincoln's website didn't have a chart for use with C25, so I experimented for about 10 minutes using some scrap 1/8" test pieces. Here are the settings I came up with, and anyone using wildly different numbers, please speak up. Flat, pushing the wire, 22.5V, 300 ipm. Vertical up, 19.0V, 180 ipm.I'd prefer to use 7018 on the job, but the kit mfgr has no stick recommendations and as I mentioned, very little in the way of wire-fed. Pics are of the first and only vertical up weld with the above settings and what happened when I beat the tar out of it with a 4-lb hammer. You'll have to excuse the lack of cleanup on the steel - this was scrap I had lying around.Any hints for vertical up solid wire are welcome - this is the first time I've done it, but it appeared to be a cakewalk. Taking my time with clean steel should yield some nice results. Actually that's why I'm posting this, to make sure there isn't anything I'm not aware of. Attached Images
Reply:Looks good to me [Account Abandoned 8/8/16 Please Do Not Attempt Contact Or Expect A Reply]. See you on YouTube! -ChuckE2009
Reply:Why are you so set on vertical up for this application?ɹǝʌo ǝɯ lloɹ 'sıɥʇ pɐǝɹ uɐɔ noʎ ɟı
Reply:Your vertical up looks just fine. Some recommendations:Do a thorough job of cleaning the base metal down to bright steel. L56 has some de-oxidizers, but it's not meant for welding over heavy scale, dirt, or grease. There's no reason you can't use 7018 stick for this job. The heat input will be a little higher due to slower travel speed. But the mechanical properties of the finished weld should be similar, whether you use 7018 or L-56 solid wire.Benson's Mobile Welding - Dayton, OH metro area - AWS Certified Welding Inspector
Reply:Lanse, thanks. TSOR, because I feel most comfortable with vertical up in general. Do you have a reason why I shouldn't? Dabber, thanks as well. Yep, I'll be cleaning everything up with a flap disk when the time comes. The only reason I'm not using 7018 is because the WPS, such as it is, is for GMAW. You know and I know that 7018 will be fine if ER70S-6 is fine, but if the manufacturer specs GMAW, I'll need to use GMAW.
Reply:I have run a little bit of that L-56 wire. I was impressed with how well it handle somewhat dirty painted material for a Mig wire. Even though I ground the weld zone, some of these epoxy paints seem to still come back and bite you while welding. But there is nothing like clean metal! Attached ImagesDont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Did the dealer get the kit from AEV ? What is the difference between ER 70-S6 and the L56 wire? just wondering, I have 70-S6 in my wire feeder at work. As far as the vertical up, I was always told a general rule of thumb is that if the material is thicker than 10 gauge you weld up, if thinner weld down. I have no idea if this is true or not, just what Ive been told by the old timers haha.... Your weld looks good to me.......
Reply:CEP, thanks for showing your welds. I'll try to get mine to look more like that.Monkers, thanks. Yes, it's an AEV kit. I haven't seen it yet, but apparently this is a brand new Jeep it's going into. They've pulled out all of the drivetrain and taken the body off. Sounds like I'm going to be welding to a bare frame. Lincoln's L-56 "Superarc" is a premium ER70S-6 wire. I had indirect exposure to it several years ago at a fab shop I worked at, where it was used to build roll-off and rear-loading dumpsters, as well as for general repairs. I was the shop foreman and did the purchasing. I tried a roll of Lincoln's less expensive ER70S-6 wire with our best weldor, and he didn't like it, so we went back to L-56.Last edited by tbone550; 06-04-2011 at 08:54 AM.
Reply:the bottom half looks better than the top half, but it is all a good weld from what I see. As mentioned, there is no reason you cant use fresh 7018 on this application. Other than the manufacturer directions...which is actually enough of a reason to use the wire. If they found out you used stick, I expect they would void the warranty if there were ever any problems. Should practice as much as you can this weekend. Please post pics of the job!Weldanpower 225 G7Ironworkers Local #24
Reply:Originally Posted by tbone550Lanse, thanks. TSOR, because I feel most comfortable with vertical up in general. Do you have a reason why I shouldn't? Dabber, thanks as well. Yep, I'll be cleaning everything up with a flap disk when the time comes. The only reason I'm not using 7018 is because the WPS, such as it is, is for GMAW. You know and I know that 7018 will be fine if ER70S-6 is fine, but if the manufacturer specs GMAW, I'll need to use GMAW.
Reply:Originally Posted by monkersAs far as the vertical up, I was always told a general rule of thumb is that if the material is thicker than 10 gauge you weld up, if thinner weld down. I have no idea if this is true or not, just what Ive been told by the old timers haha..
Reply:The job is done, and doesn't look bad. I posted it under "AEV Jeep Hemi Conversion Motor Mounts" in the projects forum just for you, tenpins. Turned out after spending another hour on Saturday getting the XMT (and myself) dialed in just where I wanted, that the dealership's plug wasn't "50 feet" from the Jeep as I'd been told, but was more like 200 feet away. So I used the TB 302 as the power source instead. It did fine, but I wish I'd have practiced with it as an alternate power source on Saturday, for just in case. It definitely produces a different weld than the XMT does. The welds are sound and don't look bad, just....different than what I'd gotten used to with the XMT. Probably could have either upped the voltage just a little or dropped the wire speed just a little to get a more similar bead to what I was running on the XMT. That XMT really is a nice power source. |
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发表于 2021-8-31 23:26:46