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I think it was jacknifed. It came in this way. I didn't have any 2" X 1/8" square tubing so I used a couple of pieces of 2 X 2 1/4 angle. I cut out the bent piece and filled it in.I tigged the angle pieces into one, then tigged it to the square stock.It took a few clamps and some longer angle to get everything in place and straightNow for the fun, pulsed spray, .035 wire at 200 ipm. I wiggled the torch back and forthfor those that like the dimes look. The puddle is really fluid and controllable. Real world weldin. When I grow up I want to be a tig weldor.
Reply:The original square tubing has a natural J bevel to it.1/4" X 2" top and bottom plates not welded at the ends.Total time about 2.5 hours. Woulda been faster if I had some square stock that fit.David Last edited by David R; 09-29-2008 at 09:04 PM.Real world weldin. When I grow up I want to be a tig weldor.
Reply:Nice Dave. Did they tow it to your shop like that or did they put it on a trailer?Yup
Reply:I don't know, it was there when I got there. The customer broke it, so he probably towed it there and he will end up getting the bill.This was tiggedThis needed some heat to get back straight. I just welded it back on instead of drilling holes. I plug welded the holes and welded in the direction of the hitch only.Not the shameless plug for my customer Ross Rental DavidLast edited by David R; 09-29-2008 at 09:15 PM.Real world weldin. When I grow up I want to be a tig weldor.
Reply:David,This may be a dumb newbie question, but I guess this is how I learn. Why do you not weld the ends on the top & bottom plate? Is there a specific reason, structurally maybe?Brian_______________________________1) MM 211mvp w/ spoolgun2) Lincoln A/C-2253) Radnor O/P
Reply:Originally Posted by ProficientBumblerDavid,This may be a dumb newbie question, but I guess this is how I learn. Why do you not weld the ends on the top & bottom plate? Is there a specific reason, structurally maybe?
Reply:Got it.Thanks for the info.Repair looks good as usual!Brian_______________________________1) MM 211mvp w/ spoolgun2) Lincoln A/C-2253) Radnor O/P
Reply:Once again another top notch 'Real world weldin' repair.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!
Reply:An acceptable fix for sure. I would have replaced the length of the tongue tube and called it a day. You know damn well the renter that damaged it will pay for it. So it's not like the rental company is eating the cost anyway.Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:Nice job David R. Did you tow it back to the rental place? If so did it trail true?Miller Thunderbolt 225Millermatic 130 XPLincoln HD 100 Forney C-5bt Arc welderPlasma Cutter Gianteach Cut40ACent Machinery Bandsaw Cent Machinery 16Speed Drill PressChicago Electric 130amp tig/90 ArcHobart 190 Mig spoolgun ready
Reply:ST, I agree it would be nice to know but judging from the size of that thing, I don't think you would even know it was behind you if towing it with anything bigger than a four-wheeler - which is probably why the renter knifed it in the first place.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!
Reply:i would challenge someone to twist the one i built, and i tow it with my dodge 2500 (cant feel or see it behind me)that single tube design is exactly what i wanted to stray away from for that very reason.Good lookin repair, if i had the angle lying around i would have done the same thing.
Reply:Nice work! Looks great.Stronger than original.You saved the labor & expense of acquiring exact replacement tubing.Lincoln SA200, HH135, Lencospot, HF80 Inverter, Rockwell 11x35 lathe, HF drill mill, Kama 554 tractor w/ FEL & BH, Belarus 250AS, lot's of Chinese tools
Reply:Originally Posted by Joker11An acceptable fix for sure. I would have replaced the length of the tongue tube and called it a day. You know damn well the renter that damaged it will pay for it. So it's not like the rental company is eating the cost anyway.
Reply:I did an exact repair like that on a boat well almost exact. And wanted to just replace the whole piece, but instead I sleeved it....and ummm ok I welded the ends Good post I learned something weld it like you own it
Reply:Excellent job. Didn't need a new length of tubing. The idea of repairing is to take what ya got, and make it good again, not build a whole new doggone hitch."Any day above ground is a good day"http://www.farmersamm.com/
Reply:Originally Posted by lewrayI did an exact repair like that on a boat well almost exact. And wanted to just replace the whole piece, but instead I sleeved it....and ummm ok I welded the ends Good post I learned something
Reply:It's mild steel. Weld it.
Reply:To me, welding the ends wouldn't add anything to the strength. It makes for a chance for a crack. To me it negates the long welds on the side. Any stress would start at the weld across the bar.It don't matter, it aint goin nowhere!Think of it as a butt weld in the original square tubing. Strong, yes, but HAZ at the end of the repair.Its what I was taught and its in the Bible (lincoln procedure handbook of arc welding)Farmersam, diamond shaped plates are so the welds are not directly across the frame. I agree with that.Oldtimer, I aint disagreeing with you either. DavidLast edited by David R; 09-30-2008 at 05:36 PM.Real world weldin. When I grow up I want to be a tig weldor.
Reply:And you even had some rattle-can red to finish off the job! Cracks tend to start where there are stress concentration factors. And a big stress concentration factor is a square corner. The best laid schemes ... Gang oft agley ...
Reply:Ok, now I'm really confused.I read an article on Trailer/Body Builders about welding on truck frames. According to this article welding or drilling holes near the neutral zone of the frame is allowable, while welding near the flanges will lead to eventual failure. Is the difference due to the type of steel used on a truck frame, or is this a generally applicable principle?If so, it seems that welding a fishplate along top and bottom edges is a problem.And what addresses the question of welding crossmembers to a side rail. Isn't this creating a area of stress also?Dave-- Thanks for the heads up on the diamond shape, I always thought it was to get more weld length."Any day above ground is a good day"http://www.farmersamm.com/
Reply:I been thinkin about this.......If I plated the square tubing with 1/4" all the way around instead of top and bottom. This would add 1/2" top and bottom along with both sides. IF I welded the ends of the plates all the way around it would be no stronger than If I just butt welded the 1/8" tubing in the first place. Does that make sense?I would have 1/8" tubing with a weld all the way around and a HAZ all the way around. To me this would not be as strong as 1/8" square tube with no welds.For truck frame repairs, lengthening or shortening, I weld the cut or repair and then add plates twice as long as the frame is wide. I only weld in the direction of the frame or make an angled cut and weld that. The frame has to flex. If I weld a square plate all the way around, It makes a stiffer part so a crack could start.Good discussion.DavidLast edited by David R; 09-30-2008 at 09:00 PM.Real world weldin. When I grow up I want to be a tig weldor.
Reply:Originally Posted by MoonRiseAnd you even had some rattle-can red to finish off the job! Snip.....
Reply:Originally Posted by David RI been thinkin about this.......If I plated the square tubing with 1/4" all the way around instead of top and bottom. This would add 1/2" top and bottom along with both sides. IF I welded the ends of the plates all the way around it would be no stronger than If I just butt welded the 1/8" tubing in the first place. Does that make sense?I would have 1/8" tubing with a weld all the way around and a HAZ all the way around. To me this would not be as strong as 1/8" square tube with no welds.For truck frame repairs, lengthening or shortening, I weld the cut or repair and then add plates twice as long as the frame is wide. I only weld in the direction of the frame or make an angled cut and weld that. The frame has to flex. If I weld a square plate all the way around, It makes a stiffer part so a crack could start.Good discussion.David
Reply:It all depends.It depends on the specific materials involved, and the specific loads involved, and the specific weld and its parameters.Done 'right', a weld is as strong or stronger than the original material.Done 'wrong', a weld is weaker than the original material.Riveting may be done for production reasons, or tooling reasons, or whatever.It all depends. The best laid schemes ... Gang oft agley ... |
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发表于 2021-9-1 00:16:11