How would you go about this repair?

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My uncle has this crack in the mounting plate for his bucket in his t180 skid loader. I was going to grind a V into both sides and run some .035 flux core wire at about 200 amps with a single pass to the side with the bucket and multiple passes where the bucket clears then grind flush where needed. I would assume I will need some preheat? It will be around 20*F.  Taking a guess this would be grade 50 steel? I know from past experience the buckets are grade 50. Will the FCAW process work for this application with the hardened steel? Main reason I am wanting to use FCAW is the 220v service at the house is only 30 amps which will be sufficient to run my wire feed. If I have to I can have him haul the loader to my shop where I have a stick welder where I could run a 7018 and top it with hard faced rods if needed.....but its about 60 miles and just trying to avoid the hassle.Thanks.
Reply:I would drill out the end of the crack if possible. Then grind out the crack and weld it, grind it flush if needed. If a little preheat makes you feel better do it, don't know if it would be required.Airco Ac/Dc 300 HeliwelderMillerMatic 200 (stolen)Miller Maxstar 150STLMiller AEAD200LE (welding and generating power) Hobart MIG
Reply:Drilling should not be required, the white area at the lower part of the crack is actually where there is a hole in the plate and the white you see is the rock on the ground. The crack itself runs completely through the plate and runs from end to end with no stopping point so its a full break.Thanks for the quick response.
Reply:I would bevel the crack and weld it with stick or flux core
Reply:If it's as low as 20 degrees I'd try and bring it up a little anyway. Especially if it's only .035 flux core."The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt
Reply:You can warm it up a bit it doesn't need to be hot, more or less warm to the touch, then just follow through how you intended to weld it, bevel, weld and grind flush where needed. Just make sure you end up with enough weld material to make sure the repair holds after it is ground flush.
Reply:Try as you might, I don't believe you're gonna get 200amps out of that .035 wire  Best you'll probably do is around 150amps at 21v with a very fast wire feed at 275ipmNot saying it's bad, just that your parameters are off a bit.  This is a good guide for self shielding wire (NR211MP, or the equivalent)  http://www.lincolnelectric.com/asset...P/c3200010.pdfPersonally, I've found the .035 self shielding wire to run rather crappy over around 16-17v, but that might just be me, dunno.Larger .045 wire might get you more amps, but the .035 ought to work ok if the steel's not too thick."Any day above ground is a good day"http://www.farmersamm.com/
Reply:Not sure about flux core, but solid .035 ER70S-6 75/25 31.x volts around 600 ipm will in fact do upwards of 250 amps. Miller xmt 304 with digital read outs. Sent from my SGH-T989 using Tapatalk
Reply:Those things suck! I've fixed a bunch of them. 7018, reinforce with plate as long as you have room for it. Good luck!Miller trailblazer301gLincoln sa200Miller251Miller spectrum 625Victor oxy-acc2002 Chevy duramax 3500 dually 4x4
Reply:I got the same crack in my 863. I just beveled it and welded it out with 7018. It's still fine after about 8 years.
Reply:We've had various Bobcat skid steers on our farm every day since 1978. I'm guessing the quicktatch pins haven't seen enough grease and the levers have been pounded on to move the pins. Years ago, we had two skid steers (642B and a 753) crack in similar locations. Ever since switching to the hydraulic quicktatch we haven't seen any cracks. Of course, you need to give those pins a lot of grease or that little attachment cylinder won't close, and then you have to get out of the comfy cab to switch attachments.Lincoln Precision Tig 185Lincoln Power Mig 256Hypertherm PM 45Everlast 140STSmith O/A
Reply:Originally Posted by manningWe've had various Bobcat skid steers on our farm every day since 1978. I'm guessing the quicktatch pins haven't seen enough grease and the levers have been pounded on to move the pins. Years ago, we had two skid steers (642B and a 753) crack in similar locations. Ever since switching to the hydraulic quicktatch we haven't seen any cracks. Of course, you need to give those pins a lot of grease or that little attachment cylinder won't close, and then you have to get out of the comfy cab to switch attachments.
Reply:Originally Posted by farmersammTry as you might, I don't believe you're gonna get 200amps out of that .035 wire  Best you'll probably do is around 150amps at 21v with a very fast wire feed at 275ipmNot saying it's bad, just that your parameters are off a bit.  This is a good guide for self shielding wire (NR211MP, or the equivalent)  http://www.lincolnelectric.com/asset...P/c3200010.pdfPersonally, I've found the .035 self shielding wire to run rather crappy over around 16-17v, but that might just be me, dunno.Larger .045 wire might get you more amps, but the .035 ought to work ok if the steel's not too thick.