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Rust Neutralizers?

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Author

12-06-2003 11:05:24

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There are several paints, stains and chemicals intended for the purpose of eliminating rust. All of these products are advertised to be the best. Any information or experiences with any of these products would be appreciated.

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12-08-2003 15:05:59

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

Thanks for the help----I now have some ideas.

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Gary in Geneva

12-07-2003 01:12:00

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

I had an old antenna tower that had started rusting. Did a quick wire brush job to remove the loose rust and applied 2 cotes of Duro (now Locktite) Extend rust converter with a rag. There are a few small rust spots after 6 years in the Florida weather. I just touch it up with a little more and am good to go. The product is supposed to be top coated with paint to last longer.

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Bob G

12-06-2003 17:06:46

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

Our local fertilzer plant uses Zero Rust on all the tanks and truck for rust. They are the largest privately owned company west of the Mississipi. My son works for them and says they swear by it. I think about the only place to find it is on the web.

Bob

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kyhayman

12-06-2003 16:25:42

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

I used Gempler's rust converted (some kind of non acidic water based 'magic stuff'). I didnt believe their claims, all the picutres looked great but it just didnt jive with my understanding of chemistry. It worked. Painted the decks on a NH 1034 stackline automatic bale wagon. That was 5 years ago and even the bare spots where the paint has rubbed off havent rusted (except one spot that looks like I missed with the rust converter). I followed the directions and used 2 coats, 48 hrs apart, then I put on 2 coats of acrylic primer, wet sanded, and put on 5 coats of NH red. Wouldnt put on nearly as much paint on anything else but the decks absolutely must be slick or the hay doesnt slide right.

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Rlach

12-06-2003 14:01:33

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

Dupont Metal Prep and equivalent are based on phosphoric acid; rust is iron hydroxide or iron oxide hydrated; it can be represented by Fe(OH)3 or Fe2O3.H2O; phosphoric acid reacts with the basic rust and forms iron phosphate, FePO4, which is white. Some people called this thin white coat a phosphate primer. Since iron is associated with phosphate, it cannot reacts with oxygen to form iron oxides(in theory). this very thin phosphate coat must be protected as soon as possible with two part primer(vinyl wash primer), primer, primer surfacer and top coats. If the job is well done, it should be rust resistant for many years if the coating is not damaged.
regards, Rlach

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jdemaris

12-06-2003 13:14:12

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

I'm assuming you're talking about the various chemicals and primers on the market that are supposed to "convert" rust to something inert. A few years ago I was doing body work on my rusty 87 Suburban and I tried several different brands. Every one of them had the same basic directions. Put the stuff on, let it turn white or some off color, then paint. | As far as I'm concerned, everything I used was useless. In fact, I had a few test areas where I used Rustoleum "rusty metal" primer instead, and it worked better.

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nf owen

12-06-2003 13:12:39

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

SIR, U SAID NEUTRALIZERS, TRY OSPHO FROM PAINT STORE. R U FAMILIAR W/ NAVAL JELLY, ALSO? BE BLESSED, NIK

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tick-ps

12-06-2003 13:11:33

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

I also want to note a neutralizer with phosphoric acid will kill the formation of rust, But it has to be primed and topcoated to prevent new rust and versy visy.

tick

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Tick

12-06-2003 13:06:34

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

I painted a metal flagpole some 10 years back I used rust oleum primer and two or three top coats. About 5 years ago that pole was taken down and has been lying on the ground since, I looked at it not long ago and although it did have some bad spots ( and this pole was no charm to begin with) it was in pretty good shape paint wise.

thats a fact

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No. Ala.

12-06-2003 12:10:05

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Re: Rust Neutralizers? in reply to GG, 12-06-2003 11:05:24

I have about as good of luck with Marvel Mystery Oil as anything I have tried.

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Ol Chief

12-06-2003 17:24:30

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Re: Re: Rust Neutralizers? in reply to No. Ala., 12-06-2003 12:10:05

To comment on use of ospho let me say that I have personally witnessed the use of Thousands of gallons of of this material with great effectiveness.I served on deep sea merchant ships from 1944 until Oct. 2002.Ospho is the salvation of deck departments mantaining good appearance on the topside of ships.During paint application tiny air bubbles are left in the coating which later bleed rust in the presence of salt water.Paint is also rapidly oxidized and and produces a chalky surface.I spent lots of years on passenger vessels where appearance is of utmost importance.In order to c be economical Ospho is frequently cut with water 50/50 or even 25/75.At sea it is scrubbed on with a round Turks Head brush at the end of an extension pole or stick.Generally it is hosed off with a stream of fresh water after about forty five minutes.The rust and chalk are then gone leaving a clean and shining surface.Ospho is not a cure all for heavy rust scale however, small items submersed in a solution can be completely descaled if left over time,but be carefull to monitor the progress and remove and flush as soon as possible.Very very heavy scale can be removed by application of pure fish.This is (old technology)and is no longer widely known to younger marine personnel.Therefore is a lost piece of very useful and and effective information.I have seen rust scale one and a half inches thick removed from neglected heavy steel plate by use of fish oil.The oil is swobbed on lavishly and allowed to soak in for five to seven days,afterwhich time all scale can generally be picked up with a scoop shovel.The fish oil would be standing on almost raw steel plate and should then be solvent cleaned and have Ospho applied. If Ospho is applied on tractors with lightly failed paint I believe the results will be suprising if then flushed off with water.In my experience this material will often prevent new rust formation for two or more weeks if allowed to with no stand with no further treatment.

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12-06-2003 18:41:34

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Re: Re: Re: Rust Neutralizers? in reply to Ol Chief, 12-06-2003 17:24:30

Where can Ospho and Pure Fish be purchased?

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Ol Chief

12-07-2003 08:18:10

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Re: Re: Re: Re: Rust Neutralizers? in reply to GG, 12-06-2003 18:41:34

Ican purchase Ospho at my local hardware store.Or possibly you can obtain at your paint store.I pay usually $17.00 per gallon. Fish oil is another matter.If you live inland you will probably never find it.On the coast it is sold by ship chandlers (suppliers). If you want me to find a reliable chandler phone # leave your name and Phone # in a post here.I am leaving here in one hour and will not return until next week end.Will then call you,or you can call my home and leave the info w/my wife. John Cooney, Fredericksburg,Texas phone ( 830 )997-8296

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RB/CT

12-08-2003 14:38:34

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Re: Re: Re: Re: Re: Rust Neutralizers? in reply to Ol Chief , 12-07-2003 08:18:10

Just some added info. Years ago i used Rust Oleum Red Oxide Primer because the railroad used it on many applications, and it was excellent. It contained FISH OIL. It no longer does. Have used POR 15, but I guess many are similiar. The old Rust Oleum fish oil, oil base primer no longer available, was one of the best in my opinion.

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