[TheForge] Silicon Bronze

[Ries Niemi]

It should work. 
I often Tig weld on other copper alloys, with a silicon bronze filler rod.
I dont preheat- and, with tig, I run at lower amps than I would for steel.
I would start low, and turn it up if it doesnt melt the parent metal.
The problem is going to be- "similar alloy".

There are dozens of copper alloys, and the idea that "brass", or "bronze" means anything is usually wrong.

So, how it will mig weld will depend on how much lead and zinc is in it.
If its 360 brass, leaded, it may pop and smoke a bit, but with tig, I can always put enough silicon bronze in the weld that it fills the pops from the lower melting point metals evaporating.

silicon bronze filler will stick to most common copper alloys.

ries


On Mar 10, 2016, at 10:26 AM, Dave Mudge <davemudge1 at gmail.com> wrote:

> I have a client that makes large gears. He is making a brass  (or similar
> alloy ) gear that is roughly 6" wide and 36" diameter. Somehow they cut a
> gouge in the top of one tooth. Maybe 1/2" wide and 1/2" deep and a couple
> inches long. Asked me if I could silver solder the gouge. I said that one
> really can't "build up" silver solder but I happen to have a large spool of
> Silicon bronze mig wire. I am sure that I can fill the gouge with that. So,
> any ideas on machine settings (Millermatic 251, .035 wire)
> or preheat or process? Anything will be helpful. thanks, dave
> P. S.
> I am not getting any mail from TheForge for some reason so could you please
> respond to my private e-mail address davemudge1 at gmail.com if you have any
> input on the silicon bronze question... thanks
> 
> -- 
> ...sometimes you're the windshield,
> ...sometimes you're the bug
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Ries Niemi
Industrial Artist
WWW.RiesNiemi.com