Brazing with TIG...rods?

[smashweld]

I've never tried it but want to have a go at brazing on a small diesel tank for a tractor

Not really sure what 'rods' I need tho, size/spec etc...
Any advice welcome!

Brazing and TIG Filler Rods - Tig Welding Rods - R-Tech Welding

Buy 1kg-5kg of TIG welding and Brazing filler rods online and receive next day delivery on orders placed before 3pm. Sizes 1.0mm-3.2mm. Order online.

www.r-techwelding.co.uk

 

[500e]

Tig braising is really nice just watch you don't melt parent metal

 

[RichardM]

If you have tig and are just trying it out use copper from some T&E.

 

[Paul.]

Using copper is more like bronze welding than brazing, still perfectly doable though, proper filler rod has a bit of silicon content which make the pool more fluid, this was done using electrical cable as a filler.

 

[123hotchef]

I need to try this, I presume you use less amps and concentrate the arc on the filler

 

[Kram]

I bought these in the past, good enough for playing with. If your doing any quantity, better to get a pack of full length rods..
www.ebay.co.uk/itm/283737510849?var=585147618692

I need to try this, I presume you use less amps and concentrate the arc on the filler

You want a gentle and diffuse heat on the metal without making a weld puddle and the filler will flow when you touch it.
I've been intending to try with bigger electrodes for a bigger arc cone.

 

[123hotchef]

I bought these in the past, good enough for playing with. If your doing any quantity, better to get a pack of full length rods..
www.ebay.co.uk/itm/283737510849?var=585147618692


You want a gentle and diffuse heat on the metal without making a weld puddle and the filler will flow when you touch it.
I've been intending to try with bigger electrodes for a bigger arc cone.

Bigger tungsten?

I do have proper SILICON BRONZE filler rod but I also have plenty of t&E off cuts that have not cost me anything

 

[smashweld]

Gonna have a search for some T+E... Cheers for that suggestion! Can see how that goes
What about the different sizes (diameter) of rods, just go for thinner ones?

 

[Paul.]

What about the different sizes (diameter) of rods, just go for thinner ones?

If you want to make a bigger filler rod, twist 2 or 3 lengths together, put one end in the vice and the other in a cordless drill pull gently as you make the twist and it will straighten it as well.

 

[Richiew]

I've done a little bit of Tig brazing in the past and I found the 2.4s more useful than the 1.6mm rods. I wasn't doing anything thin like sheet metal though.

 

[nickk]

The lad who works for me used a mixture of braizing rods and t&e on this corner joint successfully,you can just see the Braize ,I then covered it with a corner piece as the sanding revealed pin holes plus distortion.

 

[anto44]

I've tig brazed a few fuel tanks with pin holes in the bottom, proper brazing rods work better than t+e for this, they wet out better so you can get a nice big flat puddle.
T+e works better for fillet joints though, the fact it doesn't wet out as well works in your favour in fillet joints as it let's you build up a nice bead easier, brazing rods tend to just wash down onto the bottom plate

 

[Shox Dr]

Either Sif No8 (C11) or Sif 968 are the rods to use, the latter wets better. Blunt Tungsten with around 2/3rd the amps for A18

 

[paulmitchell1984]

Excuse my ignorance but what is t&e?

 

[addjunkie]

Twin and earth electrical cable