[TheForge] welding red brass, slightly OT

[James Binnion]

Hey Ries,

The melting points of silicon bronze are just slightly higher (C6510  
at 1940F ) or exactly the same (C6550 at 1880F) as the red brass, it  
will be welding :-)  You could TIG braze it with the copper/silver  
eutectic braze alloy or even sterling silver wire for that matter to  
avoid the high zinc content of typical silver braze alloys.

Jim

James Binnion
jbin at well.com



On Jul 1, 2009, at 9:34 AM, ries wrote:

> Tig brazing is much easier than gas brazing, in my book.
> Its so much more controllable, and, functionally, it feels just like
> tig welding- you have to learn to work the rod in the puddle, by
> feeding it rather than just blasting it with the arc, but it is quite
> possible to build as big of a fillet as you want. And fill gaps with
> multiple passes.
> Copper alloys suck up the amps though- pure copper is the worst, but
> my guess is that this stuff would also like a pretty powerful welder-
> 200 amps, minimum.
> Bring a sample over, we can try it out.
>
> ries
>
>
>
> On Jul 1, 2009, at 9:25 AM, Andy Gladish wrote:
>
> Ries, thanks for your thoughts on the Brass- it's from Alaskan,  
> 23000 is
> the designation, 85% cu 15% zinc
> Brazing would be ideal- the architect sez he can't get radii in the  
> size
> he wants so all corners would be fabbed.
> I've done a bunch of brazing on silver and all the plumbing in our  
> house
> is copper...fit up would be the big issue, I'm guessing.
> New to TIG brazing- any pointers, relative to OA?
> Never have gotten on top of filling gaps with brazing material,  
> though I
> do hear stories of it being done.
> Thanks,
> Andy
>
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> Ries Niemi
> Industrial Artist
> http://www.riesniemi.com/
>
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