weld brass?

[that-guy]

i've read something about how you can TIG weld brass. i just bought a new shower head and because of the angle of the neck coming out of the wall, the shower head is pointing down instead of out. i have a spare neck down in my basement that i can cut and weld back straight, but want to make sure i know what i'm doing before i do it

ive been tigging for quite a few years now, but never with brass. any special cleaning? what rod type? tungsten? gas coverage?

 

[Thumper68]

I have had good luck with brazing rod, just clean it well and have a go.

 

[Siegel1719]

Silicon Bronze filler would work. Silver solder would likely also work.

 

[that-guy]

Silicon Bronze filler would work. Silver solder would likely also work.

just looked into this as well and that seems to be the consensus amongst professionals.

can anybody explain the difference between "flux-coated" and silicon bronze brazing rod?

 

[dr_clyde]

Brass doesnt tig weld well due to the high zinc content. It tends to want to pop and fizz like welding on something galvanized.

If you are willing to put up with that, however, it will weld. Yes, use silicon bronze if you are going to TIG it.

Silicon bronze is designed for TIG applications, and therefore doesn't need a flux coating, as the argon shield does a good job with that. Flux coated brazing rod, on the other hand, is not silicon bronze, but another alloy altogether. It also has the flux coating on it, as its designed to be used with oxy-acetylene.

 

[that-guy]

Brass doesnt tig weld well due to the high zinc content. It tends to want to pop and fizz like welding on something galvanized.

If you are willing to put up with that, however, it will weld. Yes, use silicon bronze if you are going to TIG it.

Silicon bronze is designed for TIG applications, and therefore doesn't need a flux coating, as the argon shield does a good job with that. Flux coated brazing rod, on the other hand, is not silicon bronze, but another alloy altogether. It also has the flux coating on it, as its designed to be used with oxy-acetylene.

thats what i was suspecting. thank you very much