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I'm doing vertical fillet welding at work. 3/8"-5/8" material. We're using 5/64" NR211, running off a miller xmt 304, 3/4" stickout. Only one length of 1/0 lead between the machine and wire feeder.http://www.lincolnelectric.com/en-us...ncolnElectric)I'm running a little over 50ipm, and pulling around 18v at the feeder (ln25). According to Lincoln's chart, I should be falling somewhere between 180-235 Amps. The welding inspector's multimeter is showing 160-170A at the feeder, and he's very concerned about it and apparently making a fuss. Any thoughts on this? I'm pretty new to flux core and don't know the ins and outs. Lincoln's chart says approximate current in amps, but we seem to be a bit out of the range. I also realize that I'm a little low on wire feed for their recommended voltage, but this is what's working best. The inspector even says it looks and sounds just like it should. Any input would be helpful. This is really for the company to figure out, but the more knowledge I have, the better off I am.ThanksIW Local 580 NY, NY
Reply:That info from Lincoln is only suggestions. There are so many variables it's mind boggling. Long as the inspector likes the visual, only other thing to do is a quick bend test at your settings.Last edited by CEP; 01-30-2014 at 05:05 PM.Dont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Yea, that's pretty much what I'm thinking. I mean everywhere you look, they use words like suggested, recommended, approximate.....Hell, even now that I look at the specs, it says "typical applications.... 1/2" max thickness".He mentioned doing a test plate. We'll see what happens. The scary thing is that we have a ton of welding done already, and the contractor only called the inspector out a few days ago. We're probably 3 good days of welding from being done.IW Local 580 NY, NY
Reply:Originally Posted by BlueArcHell, even now that I look at the specs, it says "typical applications.... 1/2" max thickness".
Reply:Yea. I'll pass that along to the guys in the office. Actually most of the welding is 3/8-3/8. The only time the 5/8 comes into play is for the stringers. We're welding 5/8" sawtooth plates on to existing channel stringers. It's a roughly 40' stair, welding the plates continuous top and bottom. So 160' of 5/16" weld per stair. 4 Stairs. Yes absolutely insane. The original detail was 2 on 10. I have no idea why that was inadequate. Don't even get me started on the stair pan weld detail. Thanks for the help though. I'll let you know how it pans out.IW Local 580 NY, NY
Reply:Before the Northridge earthquake in California I ran tons of that 21-B. I can't tell you how many 1-inch V-Butt side bend tests I passed with that wire. After the earthquake Hobart and Lincoln started putting thickness limitations on their wire. I have some .068 NR-211 MP tomorrow I'm going to run a 3/4-inch V-butt plate just to see if it will bend. Over the years I've had several welding inspectors say they have never seen anyone pass a bend test with 211. Only problem my wire is from the 1980s, little rust on the spool, so I don't know how well it will even weld, but we'll see tomorrow!Dont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Just turn it up 10 amps and done. I wonder if he has had his meter calibrated?
Reply:Originally Posted by CEPOver the years I've had several welding inspectors say they have never seen anyone pass a bend test with 211.
Reply:I would think they would go with the 3/8, hard to get a 5/8 leg on a 3/8 plate with a lap joint. Well that's just hear say! If the wire is still any good I'll run the plate this morning, don't know if I'll get it cut and bent or not.Dont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Well so much for Lincolns 1/2-inch limitation. And this was with 30-year old wire, that had a little rust on it. .068 NR-211 MP. Ran at 21-volts, 274-AMPS, 0.0 pinch. 3/4-inch thick plate, 35-degree bevel 3/16-inch gap, 1/4 backing plate. The little ding on the coupons is from the bender, first one I didn't place a rag under it. Second one I did, but it still got a ding. Attached ImagesDont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:More pictures. Attached ImagesDont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400 |
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发表于 2021-8-31 22:35:22