Bronze filler.

[mtt.tr]

Does anyone have a good source of silicon bronze. Bought some from boc but I can see they are gas rods.


Cheers

 

[Chris Stevens]

Does anyone have a good source of silicon bronze. Bought some from boc but I can see they are gas rods.


Cheers

Why not return them and get the right ones?

 

[hotrodder]

Pretty much any decent welding supplier should carry the proper siliconcopper or silicon-tin (phosphor bronze, C11 filler wire) TIG wires along with aluminium bronzes that can also be used for TIG brazing. You'll find silicon copper (C9 aka SIFsilcopper no.968) in the Weldequip shop and google will get you some other suppliers if the local BOC shop can't exchange the CZ6 / C2 oxy fuel brazing wire for the right stuff and there's no other local sources

 

[mtt.tr]

Why not return them and get the right ones?

They don't stock silcon copper filler. Which I know sounds unlikely. Ho hum.

 

[mtt.tr]

Pretty much any decent welding supplier should carry the proper siliconcopper or silicon-tin (phosphor

Not BOC. That pretty much sums them up I suppose.

 

[Chris Stevens]

Rapid welding stocks a good range of rods, and web site is very easy to use. Sif phosphor bronze No8 seems a good choice for most jobs, but isnt a cheap material.

 

[chunkolini]

I have a stash of aluminium Bronze rods I reckon 1 maybe 2 tubes of them if you anybody is interested.

 

[milk]

What size rods are they?

 

[Maker]

I have a stash of aluminium Bronze rods I reckon 1 maybe 2 tubes of them if you anybody is interested.

Do you need AC for aluminium bronze brazing?

 

[chevy2]

They don't stock silcon copper filler. Which I know sounds unlikely. Ho hum.

They're not fast moving rods and so they dont carry them,
i ordered a pack of Sif 968 silicone bronze rods from my local boc and collected them about 2-3 days later,
Boc can supply most stuff, you just have to ask.

 

[RichardM]

unless you specifically want silicon bronze, have you tried copper wire from twin and earth as a filler?

 

[HughF]

What Richard said, works fine...

 

[Maker]

Really, you can TIG braze with pure copper wire? Any special tips and tricks? I'm gonna have to try that.

 

[HughF]

968 has a very low silicon content, the rest is copper.

 

[HughF]

I've used it for cast iron repairs.

 

[mtt.tr]

Pretty much any decent welding supplier should carry the proper siliconcopper or silicon-tin (phosphor bronze, C11 filler wire) TIG wires along with aluminium bronzes that can also be used for TIG brazing. You'll find silicon copper (C9 aka SIFsilcopper no.968) in the Weldequip shop and google will get you some other suppliers if the local BOC shop can't exchange the CZ6 / C2 oxy fuel brazing wire for the right stuff and there's no other local sources

How would you select filler rod diameter. Cheers.

 

[ronan]

Really, you can TIG braze with pure copper wire? Any special tips and tricks? I'm gonna have to try that.

I welded copper sheet using ordinary pure electrical copper wire, it worked fine, but the heat of welding anneals the copper, making it a bit weak.

 

[Seadog]

I welded copper sheet using ordinary pure electrical copper wire, it worked fine, but the heat of welding anneals the copper, making it a bit weak.

I'd have thought that welding hardens it. To anneal copper it's heated to dull red and then quenched, the opposite to ferrous materials.

 

[Maker]

To anneal copper it's heated to dull red and then quenched

You don't have to quench copper to anneal it, air cooling is fine. Welding it will get it well beyond dull red, then when cooled down it would be annealed.
AFIAK, the only way to harden copper is work hardening.

 

[brightspark]

I'd have thought that welding hardens it. To anneal copper it's heated to dull red and then quenched, the opposite to ferrous materials.

quenching only cleans the scale of it thats all. not needed