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Just purchased a New Hobart 140 mig/fluxcore welder. Would like to know, from others on the Forum, with similar units. That is, owners of small 110v DC output mig/fluxcore units any manufacturer. If they had experimented using fluxcore wire using DCEP or DCEN polarity. What have been the results of your experiments? Sort of out of the box thinking. This curious senior citizen hobbyist beginning welder would like to know? Thank you for taking the time to share your experiences with Our Forum. Any an all input, suggestions, etc. would be appreciated. KW USAF 62-66
Reply:Very commonly used with small machines.Self-shielded wire is generally DC-If you try running it on the wrong polarity it will run crappy.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Reference the specifications for the given wire. That is always the best resource so you understand for a specific product regardless.Hobart Fabshield 21B specifies DCEN http://www.hobartbrothers.com/upload...bshield21B.pdfLincoln innershield 211MP is also DCENhttps://www.google.com/url?q=http://...g_37ruVpP7DXowI am not familiar with any DCEP Flux core wire, but the two listed above are the only ones I have experience with.Sent from my SM-G900R6 using TapatalkLast edited by jdeere_man; 05-23-2016 at 12:12 PM.
Reply:Originally Posted by jdeere_manI am not familiar with any DCEP Flux core wire, but the two listed above are the only ones I have experience with.Sent from my SM-G900R6 using Tapatalk
Reply:Originally Posted by jdeere_manI am not familiar with any DCEP Flux core wire
Reply:Originally Posted by CEPNR-5, NR-5A, NR-305, and NS-3M are all DCEP.
Reply:Short answer : RTFM Longer answer : RTFM, twice and the electrode label/manual/catalog-spec-sheet twice as well.Hobart Fabshield 21B or Fabshield 23 run DCEN, as does Lincoln NR-211MP. These are all FCAW-S (self shielding) wires.E70T-11 or E71T-11 wires run DCEN.But E70T-3 (like Lincoln NR-5) or E70T-4 (like Lincoln NS-3M) or E70T-6 (like Lincoln NR-305) or E70-T FCAW-S wires all run DCEP. But he's not running any of those wires with a Hobart 140, as most of those wires come in a smallest size of 5/64" wire on 25 lb spools and need upwards of 250 amps to run. The best laid schemes ... Gang oft agley ...
Reply:Originally Posted by jdeere_manI figured they were out there, I just haven't used them.
Reply:Appreciate ALL the information concerning the Fluxcore DCEP & DCEN wire. If I understand correctly, and somebody correct me if I'm wrong, is that there IS Fluxcore wire DCEP available? A couple of ??? if I may and I've may have misssed something. Is there DCEP available that will work on the 110 V DC mig/welder that is, Hobart or other Similar 110 DC units? The other ? is what I'm trying to determine from more experienced welders. When welding thinner sheet metal using Fluxcore is there any advantages to using DCEP fluxcore or DCEN fluxcore, which is usually suggested. That is, by reversing the polarity, the arc from the work or going to the work. Not sure if I got that right?Would there may be some benefit, however slight, of reversing the polarity using the DCEP fluxcore on thinner sheet metal if that makes any sense to our more advanced forum of welders? With that said ... I'm presuming that DCEP wire is/may be available for the small mig/fluxcore DC welders?? Hope this helps & thank you for taking the time for your postings. KW USAF 62-66
Reply:Far as Im aware of. The smallest self shielded wire that will run on DCEP is .068 NR-305. Lincoln suggest a minimum of 275-amps.Dont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Originally Posted by CEPFar as Im aware of. The smallest self shielded wire that will run on DCEP is .068 NR-305. Lincoln suggest a minimum of 275-amps.
Reply:Originally Posted by neuralsnafuYeah, that may just burn through his thin sheet...
Reply:Originally Posted by kiotiweldsWould there may be some benefit, however slight, of reversing the polarity using the DCEP fluxcore on thinner sheet metal if that makes any sense to our more advanced forum of welders? With that said ... I'm presuming that DCEP wire is/may be available for the small mig/fluxcore DC welders?? Hope this helps & thank you for taking the time for your postings. KW USAF 62-66
Reply:I should probably let someone comment who has used the DCEP Flux core wire, but my observation would be, (1) your machine won't have the amps necessary to run it (2) it's all big wire, (3) as a result of 1 and 2 it would not be well suited for sheet metal work. You are welding thin stuff. You are not going to run big wire or run a lot of amps.Sent from my SM-G900R6 using Tapatalk
Reply:[QUOTE=MoonRise;7279431 Use GMAW and some 0.023-0.025 solid wire and C25 shielding gas. That works about as well as things can get for welding some 'thin' sheet metal with a wire feed welder.For 'small' wire feed welders (small in amperage output and small as in the maximum wire spool diameter that they can fit on the drive system), Lincoln NR211-MP or the Hobart Fabshield21B FCAW wires (that are made to run DCEN, so run them that way) in 0.035" wire diameter on 4" spools (2 pounds of wire) or 8" spools (10 pounds of wire) are your main name-brand choices. [/QUOTE]Wanted to try to reply to the remarks that have been posted. I pondered my situation and decided to go with the GMAW, at this time. Had some .023 Alloy 70S-6 Inweld Steel Welding Wire that the local dealer suggested. Got that HB set up as per instructions by HB manual. Haven't tried to use the 140 as yet as this will partly be an on the job learning experience for the lighter sheet to 1/8 thickness. Thank for taking the time to sharing your knowledge on this matter. KK USAF 62-66 |
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发表于 2021-8-31 22:05:41