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        General >> Off Topic Subjects >> The best rust cure ?
        
(Message started by: Jonnycab on Jan 8^th, 2009, 3:04am)

Title: The best rust cure ?
Post by Jonnycab on Jan 8^th, 2009, 3:04am

Is there such a thing as a permanent rust cure or is it all just a load of old cobblers ? ::)

I've tried so many treatments in the past (Truscan, Hammerite, Kurust, Jenolite etc), but they've never been a permanent cure....the rust just keeps coming back again >:(

Been trying to get hold of a tin of 'Granville' heavy duty rust remover/converter (as used on oil rigs & by the MoD & NATO....apparently) to see if the stuff really is as good as they say, but can't seem to find it anywhere ???

Opinions please :)

Title: Re: The best rust cure ?
Post by peteHull on Jan 8^th, 2009, 7:33am

Hi Jon,

Rust or ferrous oxide is caused by the oxidation process, when the metal returns back into the chemical state, as in iron ore.
For it to happen there needs to be the presence of water, acid/alkalli (salt) and bare metal. With these in place comes the process of electrolysis.
The way to stop this is to remove one or more of these ingredients.

In past years I have found that if you completely remove ALL the paint, dirt and rust residue back down to bare metal using a Wire brush, sander or acid treatment (which should also have any residue removed) you can then paint it with ordinary Fibre Glass laminating resin, this doesn't actually cure the rust but it takes away the oxygen component that causes it to occur in the first place by encapsulating it. It works best on areas where there are no layered joints or fittings etc which tend to harbour moisture and can cause the problem to return after a while.

I used this method on the underside and Chasis of my old Wartburg and it kept the problems at bay for 13 years. I also injected polystyrene foam into the cills and box sections.

;) hth

Pete

Title: Re: The best rust cure ?
Post by Simmo on Jan 8^th, 2009, 8:26am

Jon, go to www.frost.co.uk a company who deal with car restoration products. They have Granville on page 50 of their catalogue. Tel.number 01706 658619. (Rochdale, Lancs). :) Mike.
Here (http://www.frost.co.uk/)

Title: Re: The best rust cure ?
Post by gost on Jan 8^th, 2009, 6:59pm

Mike, where do u get all this info from ;D ;D

Title: Re: The best rust cure ?
Post by pinto on Jan 8^th, 2009, 10:11pm

Only cure - cut it out :)

Rust is a pernicious little sod - true its just the oxidation of iron- but once the process has started, little side reactions occur with the impurities in the steel that mean corrosion can continue even if you break the rust cycle by excluding air or water.

There are coatings that will kill it dead and stop it - stuff like Lead Chromate or Micaceous Iron Oxide based paints - but these are neither readily available outside specialised coatings, nor in most cases beneficial to your health....

You could always carry a magnesium "sacraficial annode" in a salt water pot in the boot.... ;D

Title: Re: The best rust cure ?
Post by Highlander on Jan 8^th, 2009, 11:04pm

on 01/08/09 at 22:11:05, pinto wrote:

You could always carry a magnesium "sacraficial annode" in a salt water pot in the boot.... ;D

Doesn't everyone?? ;)

Title: Re: The best rust cure ?
Post by Jonnycab on Jan 9^th, 2009, 12:06am

Thanks for the answers & info guys ;)...

Next question.....How do I go about suing all the companies that produce these rust remover products for making false claims ? ;D

Title: Re: The best rust cure ?
Post by Simmo on Jan 9^th, 2009, 8:50am

on 01/08/09 at 18:59:44, gost wrote:

Mike, where do u get all this info from ;D ;D

Think I first saw an advert in a Car mechanics magazine many years ago and they send out a catalogue every so often. :D ;D

Title: Re: The best rust cure ?
Post by mr._floppy on Jan 10^th, 2009, 4:18pm

Which brings us to that age old chestnut.

Which is best for rust prevention, kept in a nice garage overnight, or left outside in the wind and rain ?

Title: Re: The best rust cure ?
Post by gozz on Jan 10^th, 2009, 6:17pm

They do just as well outside with frost precautions,unless a heated antihumid pad is available :)
GOZZ.

Title: Re: The best rust cure ?
Post by Simmo on Jan 10^th, 2009, 6:49pm

Or to follow in the footsteps of one of our 'founders' Eric R have aircon in the garage!!. ;)