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Old 24-02-2012, 19:46   #1
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Anchor Chain

My anchor chain is well rusted and corroded, but I think for the most part it's still just cosmetic. Is there a recommended way to preserve and maintain said chain, or just throw it out and buy a new one when I am tired enough of rinsing rust flakes off my deck?
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Old 24-02-2012, 19:47   #2
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Sorry I forgot to sign my post,

Clayton
San Diego, CA
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Old 24-02-2012, 20:10   #3
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Re: Anchor chain

Good quality anchor chain can be sandblasted and re-galvanized a couple of times before it needs to be replaced altogether. Sometimes, though, the cost of that process can approach the cost of new chain. I think I sleep better at night and am more comfortable being away from my boat knowing my anchoring components are in an unquestionable condition.

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Old 24-02-2012, 20:11   #4
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Re: Anchor chain

Hi Clayton.

Depends on the quality of your chain. I won't quote Oz standards - but I guess you have two types of chain in the US - locally made tested good quality chain (usually branded with the makers name and/or spec) and there is cheap Chinese chain that might be OK for a runabout or the like.

If it is the former - consider having it regalvanised. Your good quality chain is an investment and if it is not worn (visually inspect EVERY link) or overstretched, the galvanising works will acid wash it and galvanise it. Maybe you can do your anchor too if it needs it. My regalvanising cost less than AUD$3.00 a meter. Cheap compared to the cost of new (Ozzie) PWB short link tested chain.

If it is the latter and is rusty - replace it. Perhaps replace it anyway.

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Old 24-02-2012, 20:28   #5
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Re: Anchor chain

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Originally Posted by Z1Krider View Post
My anchor chain is well rusted and corroded, but I think for the most part it's still just cosmetic. Is there a recommended way to preserve and maintain said chain, or just throw it out and buy a new one when I am tired enough of rinsing rust flakes off my deck?
I had mine stripped by a shop in Muskegon Michigan. 60 bucks for 310 feet of heavy BBB. The rig is a pourous belt tumbler with the blasting shot propelled down onto the chain which is being continuously rolled. I transported it immediately to the coater. After some research, I found a guy who is doing the chains for the Navy they use to tie down jets on carriers. It is NOT hot dip galvanize but is tougher. 360 bucks. ArmorGalv | Michigan Metal Coating - Home Find somebody doing this in your area. With the military in San Diego you will probably score on both blasting and armor. The armor is a powder coating. It is totally uniform and will not leave the melted goobers of zinc and thin spots. It is also not as environmentally hazardous as molton zinc.
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Old 24-02-2012, 21:05   #6
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That is a great Idea to powder coat, although once that is done the visual inspections won't be as valuable. I will look into that
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Old 24-02-2012, 21:14   #7
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Re: Anchor chain

Before doing anything - take a close, really close look at the links of the chain. Any two links rub against each other at the inside end of each oval shaped link.

Where the two links rub against each other it is possible with old rusty chain that the thickness of each individual link has significantly decreased. In other words, a 5/16" thick new chain link may have been reduced to 3/16" thick piece of metal due to the links rubbing together over time.

If this is the case then you need a new length of chain. Galvanizing is not going to restore the original thickness of the chain.
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Old 24-02-2012, 21:14   #8
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Re: Anchor chain

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That is a great Idea to powder coat, although once that is done the visual inspections won't be as valuable. I will look into that
It is not a powder PAINT coat. Follow the link and read the technology. The licensor is also noted. It is an alloy of zinc and other metals chemically set at temperature. The alloy is bonded at the molecular level to the base metal. It will last longer, won't be as damaged in the wildcat and can be re-coated later.
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Old 24-02-2012, 21:23   #9
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I will look again closely for that type of wear.

Even if I need to replace the chain, I like the idea of coating and preserving the chain.
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Old 24-02-2012, 21:28   #10
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Re: Anchor chain

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Originally Posted by osirissail View Post
Before doing anything - take a close, really close look at the links of the chain. Any two links rub against each other at the inside end of each oval shaped link.

Galvanizing is not going to restore the original thickness of the chain.
So true.

That chain looks like probably from a mooring.
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