Tweet
Q. Hello, I taught myself to weld on a Syncrowave 250 TIG machine. I am now trying to modify a stock cast steel exhaust manifold for use with a turbocharger. I am wondering what your recommendations are for what rod to use? I was thinking nickel, but someone mentioned 308L or even 309. Oh yeah: I will be welding 304 stainless to the cast steel. (Submitted by: John Stimpson from unknown)
A. Wow, you sure have a tough one. You might be better off welding paper to gold. The two completely different materials in an environment that is subjected to many heat cycles will most likely crack no matter what filler you try. If you are bent on trying, I would try a Silicon Bronze (SiBr) rod. It should flow easily with the cast and still be somewhat compatible with the 304. Preheat the material and wrap it in a themo blanket or pack it in dry sand to cool slowly. Dont be surprised if it takes a good day to cool. Don't rush cast! You may be better off to make your own exhaust manifold like headers. Sorry I don't have a good answer for this one. If you figure it out, let me know!
A. Wow, you sure have a tough one. You might be better off welding paper to gold. The two completely different materials in an environment that is subjected to many heat cycles will most likely crack no matter what filler you try. If you are bent on trying, I would try a Silicon Bronze (SiBr) rod. It should flow easily with the cast and still be somewhat compatible with the 304. Preheat the material and wrap it in a themo blanket or pack it in dry sand to cool slowly. Dont be surprised if it takes a good day to cool. Don't rush cast! You may be better off to make your own exhaust manifold like headers. Sorry I don't have a good answer for this one. If you figure it out, let me know!
Comment