is it possigble to mig weld stainless steel and be strong too ???

 

You cannot actually weld them together. The metals will not flow together.

It might LOOK welded (Trust me, I've tried for fun). But it will fall apart.

Dustin

 

r u reponding to my post or someone elses ?? im confused here ....

 

so welding a cast dsm BOV flange to my aluminized steel charge pipe should be fine?

 

You CAN weld cast iron. Oxyacetylene is your best bet.

What is the BOV cast out of? Aluminum? Steel? Iron? Plastic? Sugar?

 

I thought you could weld a bead around the the steel bov flange and then weld a bead around the aluminum pipe and then be able to weld the 2 welds together? Id bet there has to be a way to do it like that?

 

Well the filler is still just going to be steel and aluminum that still don't want to mix

You can weld steel to aluminum with explosion welding but I don't really think that's practical for mounting a BOV flange.

You can't weld them together using conventional methods.

 

Isnt that brazing, not welding?

 

Brazing does not melt either of the metals you are joining together. You only melt the brazing rod and heat the two metals up enough until they bond but do not flow together.

 

I have zero problems with MIG and arc/stick, never tried with oxy/fuel - mainly use that for brazing copper these days. I build some damn fine stills.

Welding the cast BOV to aluminized (steel) pipe is not a problem. Why don't you try to weld a BOV flange to the charge pipe instead, and not mess up the BOV? makes more sense to me.

 

My money is on BigMoose...when he speaks, it's the truth

Personally...the BRASS flange for my PLASTIC BOV is JB Welded onto an ALUMINUM pipe and has been a trooper for the last 6 months at 7-9psi and ambient temperatures ranging from 30-100+º F...so, it has my vote, as well.

 

if you weld a cast piece it is best if you actually bake the piece at like 450 degrees in the oven before doing any weld on it

 

noo i was talking about welding the cast iron BOV flange, not the bov itself heh...

 

it's not the labor that makes this type of welding so expensive; it's the cost of all that damn rocket fuel it takes to get the space shuttle into orbit.

 

ok...

then would i be able to weld the steel flange to a ALUMINIZED pipe??

these pipes: http://www.jcwhitney.com/product.jht...=14721&BQ=jcw2

 

Yes, I weld aluminized exhaust pipe all the time with my TIG. The thin aluminum coating just vaporizes.

Regards,
BigMoose

 

thank you.!!!

when they say aluminized.. is it made out of steel with a aluminum coating??

thank u bigmoose !!

 

Yep, big difference between Aluminum Pipe like some nice 6061 Al alloy which cannot be welded to any ferrous metal by conventional means, and aluminized exhaust tubing. The aluminized exhaust tubing just has a thin aluminum coating that forms a thinner layer of Al2O3 (aluminum oxide) that protects the low carbon steel pipe from rust. If you want to make sure what you have is an aluminum coating over steel, check it with a magnet. Steel attracts, and aluminum is not magnetic.

Put the torch to it, any type you prefer, the few microns of aluminum are gone in a flash and you can easily weld steel to steel. Its a lot easier to weld, not to mention more heath safe, than welding galvanized conduit. A tip for those who may need to weld galvanized conduit, I have taken to stripping the zinc by dipping the ends to be welded in muriatic acid, bought at home depot.

Hope this helps some.

Regards,
BigMoose



[Modified by BigMoose, 8:17 PM 1/31/2003]

 

BigMoose