Welding metals

[yottie]

Have just come across some sites showing how to join various metals using aluminium rods. Would be grateful for pointers to the best places to start me off on this new venture !

 

[Burnerman]

Ye gods that’s a difficult one.....are you talking AC / DC TIG welding here?
I’ve tried - and failed handsomely - every time
John

 

[lostinthelight]

Ye gods that’s a difficult one.....are you talking AC / DC TIG welding here?
I’ve tried - and failed handsomely - every time
John

I think op may be talking of a lumiweld type thing that FB keep bombarding me with
This may be one of them:

 

[Burnerman]

Ally to ally, fair enough.....but to dissimilar metals? That’s beyond my remit!
Too many discrepancies between crystal / grain size, never mind melting points.
John

 

[dontbelieveawordofit]

Ye gods that’s a difficult one.....are you talking AC / DC TIG welding here?
I’ve tried - and failed handsomely - every time
John

me too.

 

[frutbunn]

I think op may be talking of a lumiweld type thing that FB keep bombarding me with

Tried this but I couldn't get a decent weld, though to be fair it was an Indian built Lambretta engine casing and they'll pass off any old alloy as aluminium over there.
Ended paying a welder to repair it with a tig welder.
Lumiweld might work better with something aproaching "real" aluminium.

 

[lostinthelight]

This is the other ad I was looking for:
https://fb.watch/2ZPPjNVWog/

 

[Burnerman]

All ferrous material, I think?
Low temperature soldering, albeit effective!
John

 

[lostinthelight]

All ferrous material, I think?
Low temperature soldering, albeit effective!
John

There looked to be a copper tube they joined to lock asps and an ally rad so a mix of metals.
Ive only used lumiweld on alloy, never thought to try on anything else..

 

[Keithmac]

All ferrous material, I think?
Low temperature soldering, albeit effective!
John

I could be wrong but I'm sure it's only suitable for non ferrous metals (which makes it a lot less usefull).

 

[Burnerman]

Copper alloys as well as aluminium? Got to be a magical compound or a bloody good flux!
John

 

[lostinthelight]

Copper alloys as well as aluminium? Got to be a magical compound or a bloody good flux!
John

No flux involved , just a scrub with SS wire brush on the kit ive used

 

[Burnerman]

The solder must be cored, therefore? All new to me, this one - I'm just very sceptical about what I see on You Tube.
John

 

[lostinthelight]

I'm just very sceptical about what I see on You Tube.
John

Me too, Im not sure where my lumiweld is since moving but if I can lay my hands on it Ill give it a bash on a few materials...

 

[Burnerman]

I wonder why they call it 'welding' ?
I've never come across it but if I can find a supplier I'll give it a go.
John