Northy
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| posted on 29/12/04 at 09:36 PM |
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Does stuff rust if left in water?
I've just started Electrolysis'ing my new rear end parts, and due to a lack of power have only got one part half done 
I don't want to leave it on overnight as the powersupply is getting hot due to it running at its limit, so what shall I do with the half done
component?
Leave it in the Water/Soda mix overnight with the current turned off?
Or...
Take it out and squirt it with WD40 or teh like as parts will be down to bare steel and will rust again in no time! 
Thanks
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing! 
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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Metal Hippy
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| posted on 29/12/04 at 10:03 PM |
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If it's only half done then surely you're gonna do the electrolysis again anyway to remove rust...
So if it starts to rust again who cares...?
Cock off or cock on. You choose.
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Northy
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| posted on 29/12/04 at 10:06 PM |
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But there are some machined areas I want to protect........
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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andylancaster3000
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| posted on 29/12/04 at 10:16 PM |
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Bring the bits inside!!! Airing cupboard would work well
Andy
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andkilde
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| posted on 30/12/04 at 02:16 PM |
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Completely submerged they should be fine -- you need oxygen for rust to take hold, fair bit less available (though there is some) in the water than in
open air.
Cheers, Ted
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MikeRJ
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| posted on 31/12/04 at 09:38 AM |
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Use a smaller anode or submerge the one you have less to decrease the current. You will find the current drops of considerably as the anode gets
munged up with nasty stuff anyway.
I left my cortina hubs and uprights pickle overnight with a battery charger as the current source. Started on ~4 Amps and was down to under 1 Amp by
the morning.
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craig1410
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| posted on 31/12/04 at 12:19 PM |
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I wouldn't recommend leaving it in the water unless you have at least a small amount of current still flowing as there is certainly oxygen in
the water (that's how fish breath after all...). Why not connect up an old 1.5V battery just to keep the steel from oxidising or as was said
above, remove most of the anode to reduce the current flow.
When you do lift it out once the process is complete, give it a good scrub with a wire brush to get the black iron oxide off (I found a brass brush to
be best to get into the pores left by the process). Rinse under very hot water (to give it a head start when you dry it), dry it thoroughly, degrease
it and paint it with an acid etch primer as soon as possible.
Cheers,
Craig.
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Northy
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| posted on 31/12/04 at 12:28 PM |
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Cheers all,
I'm loving this easy way of de-rusting stuff! I'm well into it now.
Cheers
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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Liam
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| posted on 2/1/05 at 02:02 PM |
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Hope all your bits are fine!
To be safe i'd probably dry the half done bit as if it were finished (i used a low oven for a few minutes). Then wd40 the machined surfaces.
Then finish the electrolysis when you can.
Having said that though - my mate started to electrolysis a whole front upright/hub/brake assy to help dissmantle it, forgot about it for a few days
leaving it submerged and switched off, then finished the electrolysis and there was no rust damage to any machined surfaces.
Liam
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