.045 innershield?

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I have a Lincoln Pro Mig 175 and am a reasonably competent welder, but I need to weld some 1/2" A36 plates to some 1/4" steel tube. Heavier that I have ever done before. This is on a ground engaging implement for my tractor, so if it fails it's no big hazard.  Would I be better off getting some .045 Innershield for this job or just deep bevel and make multiple passes with .035?
Reply:I would use bigger wire.  Its gonna take all you got.  What kind of joint?  fillet?David Real world weldin.  When I grow up I want to be a tig weldor.
Reply:You can do it with that machine but .045 wire will trip the over load in about 45 seconds if you turn it up to the point that you get the full benifit of .045 wire. If you got access to a good stick welder you'll make much more progress. If i didn't have a 250 amp MIG welder I would stick weld it with 1/8" 7018.Last edited by tresi; 05-16-2009 at 03:23 PM.Tough as nails and damn near as smart
Reply:0.045 NR212 for the 1/2 plates.0.045 (and under) NR211 is rated for max plate thickness of 5/16 inch.That's not a limit from the machine, but from the wire itself.  Right from Lincoln.Or maybe you can use a different manufacturer's 0.045 FCAW-S wire.  I forgot the name of the Hobart variant of E71T-11,  but that one is rated for 3/4 inch plate IIRC.  The best laid schemes ... Gang oft agley ...
Reply:I should have mentioned that these 1/2" plates are knife plates.  I can reach both sides to weld.  Do you still consider this as 1/2" or since both side are welded more like 1/4 or 5/16"?I would rather not spend the $$ to upgrade the machine to handle .045 if not needed.
Reply:I don't know the difference in the 180c and 175, however my 180c runs .045 fluxcore very well.  Are there specs on you door panel.  Isn't it multiple pass with either wire, thus I would go with the larger wire.
Reply:The parts to change in the machine to run .045 should amount to an .045 tip, an .045 drive roll and an .045 gun liner.   None of those parts are expensive or hard to come by.   The liner in the torch now may be able to run .045 as-is.  Check your machine owner's manual.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:The Lincoln 175/180 machines typically have an 0.035 liner in them from the factory and can run 0.025 or 0.030 or 0.035 wire sizes through that liner.To run 0.045 wire, you have to get the 'kit'.  Which consists of the 0.045 liner and the 0.045 drive rolls and the 0.045 guide tubes and an 0.045 contact tip (yes, only ONE contact tip!  WTF?!  So get some more 0.045 tips while you are at it, Lincoln/Tweco 11-45 is the number).  And a 10# roll of 0.045 NR211, which is NOT rated for use on 1/2 inch plate (see previous posting above about plate thickness limitations for NR211 wire).  So you also have to get a roll of 0.045 NR212.  Lincoln P/N ED026090 for the 10 # spool of 0.045 NR212.And yes, for 1/2 inch plate you really do need to use the 0.045 wire.  It will get enough amps ( tops out at about 170 amps and 19 volts at 150 ipm WFS) to be able to work on the 1/2 inch plate, where as the 0.035 NR211-MP tops out at about 120 amps at 16.5 volts and 110 ipm WFS.That, and the 0.045 wire will deposit about twice as much metal as the 0.035 wire when you crank it up.  You'll still end up having to do multiple passes, but with the 0.045 wire you will do less passes then you'd have to do with the 0.035 wire (if the 0.035 wire could get enough amps to melt/fuse into the 1/2 inch plate, which it really doesn't).  The best laid schemes ... Gang oft agley ...
Reply:Originally Posted by MoonRiseThe Lincoln 175/180 machines typically have an 0.035 liner in them from the factory and can run 0.025 or 0.030 or 0.035 wire sizes through that liner.To run 0.045 wire, you have to get the 'kit'.,,,
Reply:I also agree with above comments on wire sixe vs material thickness.We commonly use a 3 pass overlay to help keep trapped hudrogen from making weldments brittle or crack.The lower diagram of a butt joint should also be V notched out on the bottom side & a single pass run there also.It also will help some when using lower amperage machine to preheat a bit with O/A torch pryor to welding. Attached ImagesIF IT WORKS, DON'T FIX IT2 Lincoln CV-300 / LN-7 GMALinde-VI 253,400 & 450 w/MIG35 feedersCNC Table with Oxweld O/A & Hypertherm 1250G3Lincoln Ranger GXT 250Hobart-MicroWire 300ESAB Heliarc 161ESAB-Mobilemaster 2 CC/CV Feeders& more