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Subject:	Re: Rust Removal
From:	Mike Fenner <[log in to unmask]>
Reply To:	[log in to unmask]
Date:	Tue, 4 Dec 2001 13:45:39 -0000
Content-Type:	text/plain
Parts/Attachments:	text/plain (67 lines)

mmm there's a thought... but suggest also plenty of rinsing as well though
after to remove neutral salts,
also make sure neat chemicals don't "see" each other direct.
A friend of mine used to put bits of copper in his iron pickling bath, he
didn't know why but just did because he was told to by an old-time expert
and so on back. It's sort of sense as amongst other things the copper would
plate out on the iron and passivate it I suppose, and this is not too far in
concept from the old time "killed spirits" fluxes (where Zinc is added).

Best regards

Mike



-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of <Rudy Sedlak>
Sent: Tuesday, December 04, 2001 1:24 PM
To: [log in to unmask]
Subject: Re: [TN] Rust Removal


Earl, the bad news is that when you have rust, the surface has been
seriously
activated, and virtually any chemistry that removes rust easily will leave a
surface that re-rusts very rapidly.

Hydrochloric Acid is likely the fastest, easiest way to get rust off a
surface, and the easiest way to get fairly concentrated Hydrochloric Acid is
to buy a bottle of toilet cleaner, most liquid toilet cleaners are pretty
concentrated HCl.  The best way to prevent rust from re-occurring is
neutralize the acid as soon as the rust is removed, and for a cheep and easy
way to do that, use a diluted laundry detergent.

This will still leave a surface that re-rusts faster than the original
rusted, however, short of coating the surface with an organic coating, it is
the best/easiest approach.

Good luck

Rudy Sedlak

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