Pumkin welding

[driver007]

When you guys have welded your axle tubes to the diff housing did you use a nickel base rod? Or did you just use a smaw 7018 or a mig e70s-6? I have never welded a diff and I am looking for some feed back on what has worked good. Of course the pre and post heat treatment would be used.

 

[IOPort51]

nickle would work but if it were mine I would go 7014 stick , slow cool and less draw than 7018 or nickle. no way I would MIG this. short welds, 3/4"-1" at most 3 or 4 times, even spaced. I have never done this but this would be what I would try first.

When you guys have welded your axle tubes to the diff housing did you use a nickel base rod? Or did you just use a smaw 7018 or a mig e70s-6? I have never welded a diff and I am looking for some feed back on what has worked good. Of course the pre and post heat treatment would be used.

 

[73CJ]

I took mine into the local welding shop that were Pro's. They charges $30 and I didn't have worry. Only one side.

I did tack it up first.

 

[Purple77CJ7]

I welded my tubes myself. Per heated and welded short beads, and moved around welding different spots. I used 7014 rod. I also peened the diff as things cooled to help relieve stress. At the same time I welded a truss to tubes and diff housing. I moved around between the two, so one spot didn't get to hot. That was two years ago, and all is good. It's not as hard as you think.

 

[PaRenegade]

Good question Driver. I have also read where you should heat up the cast center section a bit with a torch before welding, and then use it some to let it cool slowly.

 

[Kane]

With cast the most important thing you can do is preheat and then cool slowly with a torch. The preheat greatly reduces stress. 7014 sounds like a good choice for rod.