Galvanising an old anchor - Southampton

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rob2

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Does anyone have experience of getting a rusty CQR re-galvanised? I'm looking for a galvaniser in the Southampton area. The anchor is around 15kg and needs quite a bit of de-rusting!

I'd welcome recomendations and advice as to how much preparation is worth doing myself.

Rob.
 
If it is very rusty the galvaniser may want it shot blasted first, if it isnt too bad it will be acid stripped before it goes in the galvanising tank. It isnt worth doing any prep beforehand.
Galvanizers are getting very few & far between, i hate to think what our local ones gas bill is per week (rayleigh galvanisers Essex)
 
doesnt a proper CQR have lead cast iunto the nose? If so, that will melt out in the galv bath and need replacing if the anchor is to dig in properly.
 
Keith is right most galvanisers will want any rusty anchor shotblasted and unless you can collect some favours not as cheap as you might think.
I had the same problem with similar anchor, spent half an hour with an electric drill and a wire brush to clean it up, paint with and pot of Galvaflow paint or Hammerite Zinc and job done for £10.
Plus loads of paint left for next year!
Mike
 
I had my CQR regalvanised last year and the weighted tip stayed intact. I think on a genuine CQR the lead is encased and unable to melt away. Could be different on a CQR copy of course.
 
I used Wessex last year. They recommended a shot blaster on the same industrial estate. Only hiccup was that Wessex and the shot-blaster couldn't agree who would take my anchor from one to the other. Once that was overcome the result was excellent.
 
I'm a galvanizer, so biassed, but...

Galvanizers are still about as plentiful as before, there's over 60 plants UK wide.

The level of rusting that needs shotblasting first is when you have flakes of rust that you can lift with your fingernail. Light powdery type rust is no problem. The acid cleaning before galv removes moderate rust. It will remove sever rust, but that holds up production, so costing more, so most don't do this.
The steel much be clean before dipping in zinc, because this is an alloying reaction between the zinc and iron (in the steel) forming alloys of iron and zinc. Its not just a coating.
Its more effective that zinc rich paints because the zinc is metallic, and conductive (electrically). Zinc rich paints have abinder which encapsulates zinc particles preventing them all from doing the electrolytic job. But these paints are not useless, they are effective, just not as effective as galv.

The Galvanizers Association website gives a directory to find you nearest (not all are members).
http://www.hdg.org.uk/127_List_Of_Plants.php

Of course, Galvanizing is very sustainable.
http://www.sustainable-galvanizing.com/

and then to get it all cheap, find a galvanizer who is also a yachtie /forums/images/graemlins/wink.gif
 
[ QUOTE ]
doesnt a proper CQR have lead cast iunto the nose? If so, that will melt out in the galv bath and need replacing if the anchor is to dig in properly.

[/ QUOTE ]
Here's that myth cropping up again: it's amazing how persistent folklore can be!
The origainal, genuine CGR was all forged steel, not cast, with the shank stamped ''Made in Scotland''.
I have owned three, and still carry one of the last batch made before Simpson Lawrence went down.
 
I think the last galvanising I had done was arranged by trailer manufacturer on Hayling Island [Hayling Trailers Ltd?]. As far as I remember, they put the work out to a firm in Sittinbourne, Kent.

I can't remember what it cost but it wasn't too bad.
 
Hayling Trailers galvanised my rudder steel work for me just a couple of weeks ago. they send it to Sittingbourne, and charged me £1.80 per kilo finished weight, so a 15kg anchor will cost around £27. Obviously more if there is much cleaning and prep to do, mine was all new steel.
 
In also had a small item galvanised several years ago through Hayling Trailers. Cost me about £5 IIRC when the minimum charge directly from a galvanisers was around £80.

I did not realise that I drove all the way from Kent to Hayling Island with it only for them to send it all the way back to Kent for galvanising!
 
[ QUOTE ]
[ QUOTE ]
doesnt a proper CQR have lead cast iunto the nose? If so, that will melt out in the galv bath and need replacing if the anchor is to dig in properly.

[/ QUOTE ]
Here's that myth cropping up again: it's amazing how persistent folklore can be!
The origainal, genuine CGR was all forged steel, not cast, with the shank stamped ''Made in Scotland''.
I have owned three, and still carry one of the last batch made before Simpson Lawrence went down.

[/ QUOTE ]
In fact there were some CQRs made with lead tip inserts - we had one from Simpson-Lawrence, bought in the early 90s. Most however were and are solid steel. For re-galvanizing it needs to be looked at.

You're right about the folklore though.
 
Thanks to Craig, I find that my previous post was in error on two counts!
First, there were evidently some CQR's with lead; second, since 1968 I have owned five CQR's, not three (I forgot the pair on my first boat). All were solid steel.
When Simpson Lawrence first launched the Delta, I asked their technical people about lead in the CQR, and was assured that it was forged steel only. Perhaps they preferred not to tell me they had made some with lead.
I guess that any gain in performance would be negated by the complication in manufacture and increase in production cost, and the project was an embarrassment!
 
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