arc welding exhaust manifolds
arc welding exhaust manifolds
(OP)
Hi all,have a question for the community here.Have joined an exhaust manifold back together after cutting an inch out so it'll fit between the tractor bonnet and front end loader. So I had some (3) low hydrogen rods of 2.5mm Dia. and stuck it together with 105 Amps at 75 volts. It has stuck and I neglected to peen the weld area due to concerns about brittleness .Keeping costs low because its a hobby job (fitting the loader) while I'm unemployed to keep the brain and spirit active....
Google search the subject revealed no answers unless using MIG . Your input will be happily received. Cheers.
Google search the subject revealed no answers unless using MIG . Your input will be happily received. Cheers.





RE: arc welding exhaust manifolds
If this is a cast manifold you would be better off using a high nickel filler rod about 55% enough to do your job. If it breaks again, look for cast iron welding rods. enough to do the job should cost you about $15.
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: arc welding exhaust manifolds
Peening is not really going to help or matter in this application. If the weld held together, success.
RE: arc welding exhaust manifolds
RE: arc welding exhaust manifolds
RE: arc welding exhaust manifolds
if it packed up the next step would be a pipe bend and 10mm mild steel flange.So I figured higher V lowers the Amperage and gives a faster deposit at less heating of the parent metal.... seems to have glued!ACTUALLY its not bad looking I was concerned about crystallization of the weld area. If there had been a note from this forum about that, it would be best to prepare a replacement and wait for the break to occur.What were your thought about the voltage ....besides 'what th F*@#..??' and thanks for your attention to detail?
RE: arc welding exhaust manifolds