Hi,
I have picked up an old Delta Jointer. I have disassembled it and have
started removing the rust via electrolysis. So far so good. I found
out that part of the body must have been damaged because their is a
bronze weld.
Can I remove the rust from this piece via electrolysis or will the
process damage the bronze?
Thanks
Alex
On 24 Jun 2004 06:06:53 -0700, [email protected] (acolic) wrote:
>Hi,
>
>I have picked up an old Delta Jointer. I have disassembled it and have
>started removing the rust via electrolysis. So far so good. I found
>out that part of the body must have been damaged because their is a
>bronze weld.
>
>Can I remove the rust from this piece via electrolysis or will the
>process damage the bronze?
>
>Thanks
>
>Alex
Alex,
Another message in the thread mentioned connecting the positive (anode) lead to your work piece. My advice is DON"T EVEN THINK ABOUT
IT!!!! It is a fast way to ruin the part. (Note, I did NOT claim that was what the other message recommended, only that it was
mentioned.) I'm still looking for a Stanley 113 frog and handle to replace one that I totally ruined when in a moment of
thoughtlessness I reversed the connections in a derusting session and left it overnight.
Always use the workpiece as the cathode (negative/black lead) and the sacrificial chunk of iron/steel as the anode (positive/red
lead). Maybe that's why it's called sacrificial. 'Cause the anode will be consumed, eaten away, rusted out, destroyed, ruined, or
otherwise devastated.
That being said, I have derusted items with brass/bronze components (as the CATHODE) without adverse effects.
Tom Veatch
Wichita, KS USA
On 24 Jun 2004 06:06:53 -0700, [email protected] (acolic) wrote:
>Can I remove the rust from this piece via electrolysis or will the
>process damage the bronze?
Yes. Use the usual CATHODIC derusting process, with the piece
connected to the negative (usually black) supply. You might see a
little green discolouration at the surface of the bath, but there's
nothing to worry about.
Anodic cleaning (connected to the red / positive) works better on
bronze than it does on steel. However this is an electro-polishing
process and it works by removing metal. Bath times are very short, and
you need to monitor progress continuously. Anodic cleaning would
eventually dissolve the whole workpiece, steel and bronze together.
--
Smert' spamionam
If the piece your derusting is anodic or connected to the positive lead in
the process, you run the risk of deplating the bronze area. The material
loss will probably be very slight, just keep an eye on the bronze area as
your processing the part.
Ed Angell
"acolic" <[email protected]> wrote in message
news:[email protected]...
> Hi,
>
> I have picked up an old Delta Jointer. I have disassembled it and have
> started removing the rust via electrolysis. So far so good. I found
> out that part of the body must have been damaged because their is a
> bronze weld.
>
> Can I remove the rust from this piece via electrolysis or will the
> process damage the bronze?
>
> Thanks
>
> Alex