ok so I found this out today from my welding instructor
all u need is a stick welder and a hard to find rod that has a nickle content of 55% or more

rods cost 71.60 per small box
im welding this flange to my turbo

 

or a mig, or a tig, or a torch.

doesnt really matter all welding works the same way, melts the metal, and mixes a filler in, it has some sort of flux, and once done (correctly) is very strong.

btw a large mig will burn that together very nicely, just pre heat and post heat.

high nickle filler is only needed when welding cast IRON...... not cast steel

 

You'd be better off with a tig torch and some ER70S.

If your instructor tells you to weld that with a stick rod, he's a moron. SPatter on the turbine wheel will drastically reduce its lifespan. haha!!

 

thats y u take it off first :1

 

preheat with a torch, weld with a mig, then dip in a bucket of sand (construction) so it cools down evenly and doesnt crack.

 

 

can we get some close ups?

looks decent, looks migged, id grind the inside weld smooth, keep turbulance outta the exhaust flow

 

Looks good, I'm always confused on the welding of "cast" I would imagine the turbine housing is cast steel? I have always had good luck welding them and factory cast turbo manifolds.

Now other things which are much more grainy and brittle I assume are cast iron?? I never have any good luck welding. I have tried it with 70 and 308 and 309 and it always breaks right off below the weld.

Later
Randy

 

from what I was told you need a realy soft rod for the cast(porus)material.
the rod used is 55% or grater content of nickle
also caled NI rod.
welded on a dc stick welder at 70amp amazing weld and very very strong

closeup pics tommorw digi batts dead again

 

Nickel rod is used on cast iron. Cast steel can be welded with ER70S-2 and a TIG.