what's causing RUST on my Stainless Steel?

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what's causing RUST on my Stainless Steel? RainLover 03-29-2006
Posted by Fenrir Enterprises on March 29, 2006, 9:15 pm
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>> Is it the grinding wheel I'm using? (Do some disks have Ferrous
>> material in them or something??) I usually don't use grinding wheels
>> stamped "for stainless" because of their cost, but I always thought
>> that was a matter of HOW they remove material, not that they would
>> contaminate stainless steel.
>>
>> Any suggestions????
>>
>>
>Try a can of anti spatter spray (welding) - we used that in repairs of SS
>road
>tankers for year and it always worked.

An engineer that used to work at Pratt & Whitney told me they used
Milk of Magnesia in order to protect metal from welding splatter. He
said that they specifically had to use the Philips brand, if someone
bought generic, the entire project would have to be scrapped and done
over.

Sounds a bit messy to clean up, though.

---

http://www.FenrirOnline.com

Computer services, custom metal etching,
arts, crafts, and much more.

Posted by Roger on March 30, 2006, 1:23 am
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> An engineer that used to work at Pratt & Whitney told me they used
> Milk of Magnesia in order to protect metal from welding splatter. He
> said that they specifically had to use the Philips brand, if someone
> bought generic, the entire project would have to be scrapped and done
> over.
>
> Sounds a bit messy to clean up, though.
>

But if you had a dose of Delhi belly after a nasty curry
the night before, ther'd be no excuse for not turning up
to work.



Posted by Trevor Jones on March 29, 2006, 6:57 pm
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RainLover wrote:
>
> Hey everyone,
>
> I build sculpture out of 316L Stainless Steel and am having serious
> RUST issues. It seem anywhere I grind using a hard disk to grind down
> welds will ends up with a ton of surface rust where ever the sparks of
> the grinding hit the sculpture. I'm having to RE-finish pieces to
> remove the millions of specks of rust that develop.
>
> What's going on here? Is there carbide precipitation happening in
> each spark? (I can't get away from hard grinding some areas of my
> work after final assembly and the finish polish is already on 90% of
> sculpture.)
>
> Is it the grinding wheel I'm using? (Do some disks have Ferrous
> material in them or something??) I usually don't use grinding wheels
> stamped "for stainless" because of their cost, but I always thought
> that was a matter of HOW they remove material, not that they would
> contaminate stainless steel.
>
> Any suggestions????
>
> James, Port Orchard
>
> www.jameskelseystudios.com

Just one. Google the phrase "passivating stainless steel" This is well
known and common.

Cheers
Trevor Jones

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