Gerard,
Muriatic Acid is a diluted form of Sulphuric acid. Not the greatet choice
for derusting. It reduces good metal as fast as it reudces rust and leaves
no protective coating.
Try Phophoric acid. It will desolve the rust at a faster rate than it
desolves the good metal. It also produces less fumes and leaves a
protective coating that lasts for several weeks (preventing rerusting).
You can dip parts in it or brush it on, rinse with water and let air dry.
If you want to continue to use Muriatic, you can treat the metal with
phosphoric after and it will not rerust for a couple of weeks. Or scrub the
part with brillo after you have "cleaned it". The soap in Brillo contains
phosphates which prevent rerusting (a very weak form of phophoric acid).
Kevin V.
-----Original Message-----
From owner-spridgets at autox.team.net
[mailto:owner-spridgets@autox.team.net]On Behalf Of Gerard
Sent: Tuesday, April 09, 2002 12:03 AM
To: spridgets@autox.team.net; spridgets-mod@autox.team.net
Subject: Chemical rust removal (muriatic acid)
While were on the subject of rust removal, I have used muriatic acid to
remove rust. work great either straight or diluted in water. You get pretty
nasty fumes from using it straight so submerging parts in a dilution in
water is slower but a bit easier to manage. The only problem I've
encountered is that the metal will rapidly develop surface rust if not
painted right away. Someone suggested a good rinsing in warm water (which I
do anyway) and spraying with WD40 until it ready to be painted.
I'm wondering if any of you chemists out there know of another way to
neutralize/stabilize the metal after getting it clean.
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