Lavezzi 40: Rusty Chain,- What to Do?

[laforge24]

The undeep storage and easy blocking water outlets make that our
achorchain is very rusty,
is there a product I can dip the chain in to get this OFF
is there a way to prevent this problem ????

[robert sailor]

End for end the chain on an irregular basis and when that doesn't work its time to have it re galvanized.

[Richard5]

To answer the question. Yes, there is Ospho,

Ospho Rust Treatment - Since 1947

[Horror Hotel]

Tie the chain behind your car and drive around on gravel roads for a few hours, flip chain end to end repeat. Now sandblast it to get it real good. Next clean it real good, now you can paint it with ospho or re galvanize.

Or get a windlass so you never need to touch it. Even the most well galvanized chain will have rust spots if used a lot (every day).

[Hoofsmit]

Fertan is another product that reverses the oxidisation process, it's used on North Sea oil rigs, you can jet wash and treat ,but nothing will work for long.
The only real solution is replacement with good quality hot dip galvanise, but probably easier to buy new.

[Horror Hotel]

Anyone ever got a quote on re-galvanizing? It's should be cheaper than a $800 chain.

[Hoofsmit]

Over here( uk) hot dip is priced on the weight of the object and not surface area which always seemed a weird, to regavanise, you have to shot/ sand blast to virgin material then acid bath to ensure good bonding, if you just regavanise the rust will just come through again very quickly, I personally would have thought the prep time would cost more than new but that's just a guess

[Hoofsmit]

There are a few threads on the forum re this subject, I can't link them as my ipad app is not helpfull, google regalvanizing anchor chain and they come up

[laforge24]

I just want to quickly/easy get the rust off,
with the rusty chain the water that passes through the chainlocker
stains the hull nicely ,,,, another option could be to
paint the boat rust brown !!

I was hoping for a product that I can dip the chain in ?

[Nicholson58]

We found a service locally for stripping our 320 feet of 7/16 G4. The machine uses carbide beads propelled by a mechanical "hurler" from overhead onto a heavy conveyor belt. The belt is draped over guides so that the chain is made to roll on itself. Cost to strip our chain was 70 dollars. I had previously arranged for a plater to take the clean chain directly for re-coating. Galvanize is the normal coating, however, I found a local specialty shop used by the Navy. There were drums of chain in his shop. These were bound for carriers as aircraft hold-downs. ArmorGalv | Michigan Metal Coating - Home. You may find a local franchise for this. It should be popular because it eliminates the toxic molten zinc tanks, acids etc. Its probably called by different names in various places. I found one in France.

http://www.armorgalv.com.au/SiteFile...ESENTATION.pdf

Here's one - Australia

DELNORTH PTY LTD
26 Firebrick Dr.
Thornton NSW 2322
AUSTRALIA
Contact:
Wayne*Sharman Ph 02 4028 6760 Ph
:
02 4028 6760
Fax: 02 4028 6759
E-mail wayne@delnorth.com

[lostsheep]

Try a molasses and water mix. A 1:9 ratio, I believe. It takes some time, 2 days to a week depending on your situation. The plastic trash bin works well, as it is wheeled so you can move it about.
Molasses and water rust remover converter - YouTube


This fellow is the first I saw about molasses rust removal. He's doing full rusted body panels from cars he drags in from the boonies. So he's using a feed trough. A bit larger scale than you would need.

Remove Rust from Metal and Panels the Easy Way: Video 1 - YouTube

[Nicholson58]

If you intend to have it re-plated, it will need to be blasted. This is a mater of the physics of getting any new plating to adhere.