Stainless Welds Rusting

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Hi guys

I recently had some ferrules welded into a stainless keg and when I cleaned them up with some water they immediately rusted. After doing some research it looks like the welds need to be pickled and/or passivated? Is there a simple solution to this that will not render the keg toxic? I used my dremel to grind back the welds and it seems to have fixed one area but there are still some rusty bits on the welds. If I grind it right back and clean it should that stop the rust?

I'm a total noob to welding but I thought stainless was not supposed to rust?

cheers

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[googe]

Hey mate, type " stainless steel contamination" into the search. Don't know how to post a link from my phone lol.

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Awesome thanks for that, just what I was looking for. Looks like I will be buying some acetone tonight.

[Goldie]

Caveman has some god info here; http://aussiedistiller.com.au/viewtopic.php?f=41&t=1970

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Yeah I reckon I'll hit the welds again with a flapper disk and clean them up with acetone.