Welding Axle Tubes

elk6x6

Member
I would like to weld my sons Dana 44 tubes to the center. I have read so many different opions I don't know what to think. Is the center cast iron or cast steel? Do you want to weld these with a mig or stick welder? What rod or wire? Do you stitch weld from side to side or just weld around them? Do you have to worry about them warping? I hope somebody that has done a bunch of these can give me some advise. Thanks
 

UFAB

Well-Known Member
Location
Lehi Ut
Good question.

Best person would be a metallurgy engineer.

Cast material varies..

Inner Cs & pitmam arms are different material like outer knuckles and cast centers

Artec and synergy ___
install manuals have weld recommendations for cast

Post heat. Preheat. Needle scale shot peen.

TIG stainless.
Stick weld High nickel Utectic rods.

How are people installimg GM 14b shave kits?
So many options

No one ever wants to be responsible.
 

MikeGyver

UtahWeld.com
Location
Arem
I used 7018 stick rod once and it worked just fine. I would recommend using stick over mig unless you have a full sized 230v mig welder (not a small 230v one). Clean out the crack really well with a cutoff wheel or something so it's shiney metal and do a little test section and see if it cracks as it's cooling down to ambient temp, If not it's probably fine. If I did it again I'd might tig it with 309L stainless filler tho.
 

STAG

On my grind
Location
Pleasant Grove
On my D60 all I did was stand it up on one end of the C, cleaned it up really well with a wire-cup on a grinder, cleaned it with (non chlorinated) brake parts cleaner, let the BPC evaporate and then cranked up my mig welder pretty hot and went around in a hot, single pass weld. (Not stitches, full circumference) and wrapped a welding blanket around it then another blanket to let it cool slowly, then flipped it on the other end and repeated.

seemed to work well for me, not saying it was exactly the right way to do it though. But it didn't warp my axle and the weld didn't crack.

oh yeah and ER70S-6 is what I used, .035" because that's all I had.
 

neagtea

Well-Known Member
Supporting Member
Location
farmington
I have used 7018 also on the scout 44's and jeep 20's.
I have also cranked up my mig and hit some 60's with no issues
Clean until it shines with a wire wheel and or flap wheel
But you never know.......
 

UNSTUCK

But stuck more often.
I have done it a few different ways, and depending on what equipment you have will determine what you can do.
IMO, the best way to weld it would be to use a stick or tig welder with high-nickle rod. This rod is very expensive, but worth the peace of mind. It should always be preheated and slow cooled. It should be cleaned very well before and once cleaned, start heating it. The heating will pull all the old oil and dirt from the very porous cast material.

If you don't have stick or tig, you can use mig. The trick with mig is the cooling process. Cast cools much faster then the mig filler. As the cast cools and shrinks, it pulls away from the filler causing the cracks that are pretty common. So in this case, heat the part up just hot enough so that your spit will sizzle (it stinks bad) then you are ready to weld. Weld around the tube in one shot and wrap it up with what ever you have and as much of it as you have nice and tight. Dont want any cooler air getting in there. It should still be warm hours later. Then do the other side.

The interesting thing is that if you ever buy any Ballistic Fab axle parts, they say just to use mig, and that that's all they ever use. I migged their dana 60 truss with mig one time and it has held up to major abuse just fine. I used high nickle rod for their 14 bolt shave kit. That has also held up great.

I think in our world of use, you have to remember, there are no guarantees.
 
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frieed

Jeepless in Draper
Supporting Member
Location
Draper, UT
I'll offer up my welder and a means to pre-heat (BIG weed burner) but I have no welding blanket.
I think HF has some for cheap though.

Oh yeah, the welder is a MM-252 that tops out at 300A so I think we're good
 

skiboarder

SkiBoarder
Location
No Ogden
So you may be doing more harm than good welding the tube to the center. Just a thought. I don't know for sure.[/QUOTe. my question is. Have you ever had trouble spinning a tube? If so, where did it come loose? Alot of people have welded their axle tubes and had no problem. But did they really need do that? Who knows. But the fact remains, "welding on cast weakens it." if you want to do something. Run a truss across the top of the diff. Do not weld it to the diff. Weld it to the axle tubes. I, by no means am an expert. Moreover it is you rig. Do what you want. But if it were me. The most I would do is truss it.
 
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