Type of welding to be used

[anupam]

guys i need help in deciding that which type of welding is best for aluminium to steel joints,also i want to know if any sort of welding is possible for carbon fibres for chassis fabrication?

[tarzoon]

that doesn't sound right at all. The alloys are very different and as far as I know aluminium is quite a b!tch to weld in the first place, and joining it with steel - which has very different properties and melting temperature. Even after joining there are problems with galvanic corrosion

http://www.finishing.com/360/71.shtml

Anyway, if I was to choose an option I would try TIG as it gives greater control.

[xxChrisxx]

weld carbon fibre??...

[Mystery Steve]

Is this a joke? Even if you could... why would you want to weld Al and Steel together?

[anupam]

i know this type of welding is either not possible or very difficult,still i thought there will be someway to do that...thought i was wrong though..

[Carlos]

EDIT Anupam, - I apologize for such inappropriate personal remarks, there is no excuse for such discourtesy.
Carlos

[noname]

guys i need help in deciding that which type of welding is best for aluminium to steel joints,also i want to know if any sort of welding is possible for carbon fibres for chassis fabrication?

what you want to weld (shape, thickness, etc.) ?
expected stress level in the weld area ?
expected working temperature of the weld ?
any significant deflections due vibration near the weld ?
do you have easy access to the weld region ?
what is acceptable cost of the weld ?

few simple question for a start

[Ciro Pabón]

"Aluminium? Pot Metal? Iron? Problems? http://www.muggywelding.com"

The name is not precisely a winner of The "Good website name" Award. I have NOT tried their product. When I asked around the first thing I saw in every face was a smile, but nobody gave me an advice worth mentioning. Just the cold looks bold inventors get used to receive... sigh. Why, oh, why can't we have world peace, end of hunger and a safe environment, like all women want?

Half seriously, I consider their solution more sintering than soldering (that is, mixing a heated powder as opposed to a flow of metal ions).

Super Alloy #1. I wonder what's the trick. They do not post pictures of steel and aluminium welded together, but they claim this will do the trick. Anyway, they sell it, anupam buys it, he tells us what happened, and everybody happy (xxxChrisxxx specially, I guess, for the number of smilies in his post, if nothing else! )


They also offer the misteriously named Super Alloy #5. It sounds like something that would make Green Lantern to falter and fall, do not confuse it with Super Alloy #1, there are three full super alloys in betweeen. You (maybe) can weld aluminium with it.

I can attest that in Bogotá, at the second hand car market they can weld aluminium very well: I once broke a carter of a friend's BMW and he never noticed. NOTE: I guess my friends don't come into this site, they seem to spend most of their time in porn sites, so I'm not afraid of consequences. Anyway, please, don't tell him! The details of that crash are embarrasing, btw, but I was your age back then.

Super Alloy #5 at work. That's not a flame, that's a Super-Flame!


So, you dispair of welding casted iron? Me too... until the famous Super Alloy #1 came to the rescue. The ad says: "Don't be afraid of cast iron!! Save those expensive parts: cast iron exhaust manifolds, cast iron engine blocks...". Sure the people at Toro Rosso can save some money on their cast iron OEM engine blocks.

Weld cast iron! Weld carbon fiber! Weld styrofoam! Nah, I'm joking, you cannot weld styrofoam, but give me a Super Alloy #1 to stand and I'll solder the world! I personally propose to give this picture the coveted 2009 F1Technical's "Most Ordinary and Useless Welded Piece with the most Perfect Weld" Award.


Let me guess: you're welding an aluminium rim to an steel center... sigh. Please, do NOT offer me a ride, anupam. Oh, and welcome to the forum! What really, really beats me is what are you soldering your carbon fiber chassis to, but, please, feel free to share with us.

[Shrek]

Super Alloy #5 at work. That's not a flame, that's a Super-Flame!

does anybody have any marshmellow's?

[WhiteBlue]

To weld something is has to be a meltable material in the first place. This is where the idea of welding carbon fiber composites falls down. The material as the name says is a reduced form of organic fiber in a cross linked polymeric matrix. You can neither melt the matrix nor the fiber. The only use for carbon fiber scrap is making regrind and using it as reinforcement for plastic parts.

[Ciro Pabón]

Super Alloy #5 at work. That's not a flame, that's a Super-Flame!

does anybody have any marshmellow's?

All I can say it's that you're not Green Lantern, but Shrek. If you were Green Lantern, who is not a green monster like you, btw, the sight of Super Alloy #5 ACTUALLY welding aluminium and iron would have filled your ogre-ous heart with terror and horror, thus faltering and falling on top of the marshmallows. Please, do not mock my very serious posts that way (find another one).

Besides, for welding marshmallows to carbon fiber, as even an undergraduated student knows, you need Super Alloy #3, duh.

[Scotracer]

This is eerily reminiscent of my final year of university when a (sad to say) colleague asked the very same question when we were working on an FSAE project. He was swiftly corrected lest word leak out in relation to the question posed.

[tarzoon]

Going back to the initial post, and before anything else...

i want to know if any sort of welding is possible for carbon fibres for chassis fabrication?

Isn't carbon fibre combined with resins and "glued" together?

[The FOZ]

Is this a joke? Even if you could... why would you want to weld Al and Steel together?

I once knew a welder who claimed she could weld a cat's ass to a windowpane, so a three-way joint between carbon, steel and aluminum should be nooo problem!

[mx_tifoso]

Has the OP tried to weld carbon fibre yet?

Results...?