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05-13-2011, 08:06 AM #1
How to correct a bad weld.
Too embarrassed to show closeup pictures here, but I have a weld on my gauge wheel setup that has broken twice. It is where the 2" tubing is welded to the jack body. Rather than explain how I tried to fix it (and had it break the second time), what is proper method for correcting a broken weld? Do I need to grind/cut away all traces of the original (bad) weld?
I clearly wasn't getting good penetration with either attempt and I need to correct that. I'd just like to get it right the 3rd time.
Thanks,Barry
Lawson Hill Farm
NH TC40DA
'64 IH Cub Lo-Boy
'47 Willys Jeep CJ2a w/ PTO
'49 Willys Jeep CJ3a w/ PTO & 3pt lift
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05-13-2011, 08:23 AM #2
Re: How to correct a bad weld.
I weld from the Redneck School of Trades, but yes, grind it away, get rid of as many voids as possible, and reweld. If the reason you couldn't get penetration is because of thin tubing, make multiple passes. I have even built up light metal edges to add more mass and then made more passes at a higher temp.
E"Freedom is never more than one generation from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same, or one day we will spend our sunset years telling our children and our children's children what it was once like in the United States where men were free."
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05-13-2011, 09:49 AM #3
- Join Date
- May 2011
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- 11
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- Mitsubishi D1500II
Re: How to correct a bad weld.
yes you need to grind away all of the bad weld......also another technique that I use alot in my shop is preheating the weld joint before welding. This will help reduce the thermal shock to the metal and reduce the stress in the heat affected zone of the weld....hope this helps.
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05-13-2011, 09:51 AM #4
Re: How to correct a bad weld.
Consider adding a brace.
Egon50 years behind the times
Livin in aWorn out skin bag filled with rattlin bones
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05-13-2011, 09:58 AM #5
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- Feb 2006
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- 12,345
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- VA
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- JD2010, Kubota3450,2550, Mahindra 7520 w FEL w Skid Steer QC w/Tilt Tatch, & BH, BX1500
Re: How to correct a bad weld.
I like your gauge wheel implementation and think ill use some variation of it.
I dont see where the weld of jack tube to square tube is made. Looks like there is a bracket on the jack that would be welded to the square. Maybe you are augmenting this with another weld to the jack tube?
At any rate, grind off as much failed weld as possible and use 6011 rod at highest non burnthru level. Chip slag, inspect the weld and touch it up while hot if you can. Bracing too as mentioned previous. ... oopps - you are stick welding right?
larryThis side of 40
JD2010, Kubota L3450/FEL w SK QC, L2550 w FEL
Mahindra 7520 [Pinky] /FEL w Skid Steer QC/w Tilt Tatch & BH, BX1500 [Mighty Mouse]
IH37 Baler, CCM165 Drum Mower, JD Rake
JD 127 bushog, Flail,SK Tilt Tatch
, KK tiller, Rhino rear blade, Post driver, post auger, chipper, pallet fork, Grapple/Loader Buddy, Homemade Splitter/DC Welder
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05-13-2011, 10:04 AM #6
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- May 2007
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- 176
- Location
- Castroville, Tx
Re: How to correct a bad weld.
It would help if we knew what type of welder you are using. also could the wheel not be swiveking and putting a side load on the weld? As you go up and down with the adjustment the angle of the castor changes and this could make it hard to turn just a idea.
Last edited by travis potter; 05-13-2011 at 10:10 AM. Reason: added a new lind
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05-13-2011, 10:17 AM #7
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05-13-2011, 10:19 AM #8
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- Oct 2010
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- NHtd75
Re: How to correct a bad weld.
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Take it off and grind until it's clean to original. Weld a short piece of tubing on top of the long tubing so the jack mounting bracket can be fitted to the side of the tubing and welded on at least 3 sides. Box in the open tubing ends in if you like.
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05-13-2011, 10:36 AM #9
Re: How to correct a bad weld.
Looked at it more closely. Cut a plate, bolt it to the jacks and then bolt or weld plate to the main frame.
No penetration, a little more heat?Egon50 years behind the times
Livin in aWorn out skin bag filled with rattlin bones
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05-13-2011, 10:37 AM #10
- Join Date
- Nov 2003
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- 1,377
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- Tombstone Az
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- KIOTI LK30
Re: How to correct a bad weld.
I agree with Egonthat you really need a brace like this.
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