cleaning

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Pete Boole
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Re: cleaning

Post by Pete Boole »

This is the same piece today - about 30 hours later.

Image

There's still the tiniest bit of rust left on the very pitted areas - I'll leave it in again tonight and it will be ready for priming tomorrow.

Pete

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Excel SA
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Re: cleaning

Post by Excel SA »

That looks like a good result. Does any of the good material (when there is!) get removed using this method? With electrolysis only the rust is removed, any non-rusty steel is unaffected.

Neil

Pete Boole
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Re: cleaning

Post by Pete Boole »

Non-rusty steel is unaffected. Absolutely every trace of rust is removed. However - I've noticed that cast iron parts seem to get eaten slightly by the process if they are left too long, so they need careful monitoring.

Pete

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bash
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Re: cleaning

Post by bash »

Got a very grotty brake caliper to clean so I thought I show you my setup. This is the good side...
Image

And this is my setup, negative to the piece needing to be cleaned, positive to a scrap steel piece. Don't let the two touch and dangle the piece off of something. Theres a handful of blasting soda (bicarbonate of soda) in the water I will show you the result in 24 hours.
Image

Bash
On a mission to find the airspeed velocity of a european swallow.

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pistolpete
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Re: cleaning

Post by pistolpete »

Bash,
Can you leave rubber on?

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bash
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Re: cleaning

Post by bash »

Yes, anything can be left on, it doesn't harm it at all. Its the hydrogen bubbles that are generated from the steel that lifts the rust off.

Bash
On a mission to find the airspeed velocity of a european swallow.

Pete Boole
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Re: cleaning

Post by Pete Boole »

Exciting! Can't wait for the next episode!

Pete

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bash
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Re: cleaning

Post by bash »

The following pictures are:-
Guess where the rust has gone.
Image
The scrap steel.
Image
Straight out of the bucket.
Image
Scrubbing brush for 1 min under the tap.
Image
30 sec with a wire brush
Image

Bash
On a mission to find the airspeed velocity of a european swallow.

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Gray14
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Re: cleaning

Post by Gray14 »

That's what you call a result. I'll be using that system in the future.

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Excel SA
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Re: cleaning

Post by Excel SA »

It's a good "lazy" system - it does work a bit line-of-sight between what are effectively the anode and the cathode, but does the job!

Neil.

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bash
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Re: cleaning

Post by bash »

Thats right, sometimes you have to turn the piece around to get in the inaccessible bits. Whats left in the bucket can go down the drain ok or even on the garden, its only water and bicarb with a little iron oxide.
You need an old fashioned charger by the way, not the newer maintenance types. Also, do it in a well ventilated place, doing it in my garage has been fine and there is no smell. Cleaning the scrap bit off from time to time can speed things up.

Bash
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Re: cleaning

Post by Pete Boole »

That's excellent Bash. How long was the current on for?

Pete

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bash
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Re: cleaning

Post by bash »

About 24 hrs but it was very crusty on the other side.
Bash
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Excel SA
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Re: cleaning

Post by Excel SA »

Normally a couple of hours is sufficient to get most rust off - once it's off there's no point in keeping it going.

I've used an old pc power supply as well, but an old car charger is easier if you have one handy.

Neil.

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