Brazing with tig

[johnny max]

Hi All
Looking to get a few aluminum bronze filler rods
Have an old brass fender needs fixing
Anyone in Ireland stock these ?
Johnny

 

[Engineer]

Rapid Welding stock a good range of TIG brazing materials, and have web site which makes ordering online very easy. TIG brazing rods not that cheap though, so if you only need a few might be an idea to see if anyone on here would be prepared to sell you what you need?

 

[Lanzecki]

I know SWP in Kilmallock, Co. Limerick have some. Don't know if that's a help though.

 

[graffian]

Few yards of .8mm 968 mig wire any good?

 

[johnny max]

If I were to cut thin strips off a sheet of brass would that work??

 

[Paul.]

If I were to cut thin strips off a sheet of brass would that work??

No, brass is a mixture of copper and zinc as soon as you go near it with an arc the zinc will boil off and leave a porous mess, my choice for repairs to brass would be silver solder using a flame.

 

[Steve74]

TIG with brass is really not a good way to do it, as has already been said, once you hit the brass with the intense heat of the TIG it will boil out the zinc (my estimates, but TIG arc is around 1400c and zinc boils at 750c), so your joint will be contaminated with the burn off from the zinc and be porous and weakened.

I'm not saying you can't do it, but most brazing rods for TIG use have little or no zinc content and are made to sweat in steels. With oxy welding you can tweak the heat by hand control, because you're not relying on the arc to create the melting temperature. TIG heating is a lot more hit and miss

 

[chunkolini]

Johnnymax says
Hi All
Looking to get a few aluminum bronze filler rods
Have an old brass fender needs fixing
Anyone in Ireland stock these ?
Johnny
Herefordshire is not Ireland but nearly as weird.
Sorted.

Chunko'.

 

[outofthefire]

I did this with our tig welder the other month with some random brazing rods I found in the stores.

I just played around with settings till I got it to flow it held up really well.

We have to weld galv quite a lot and it certainly didn't spit like that.

 

[Rob 88"]

Im might be making an order from Rapidwelding this week incase you want something Johnny. saves you the postage