Rust Remover Pasivation
 

After yiu use Evapo-Rust , el;ectrolysis or other methods to strip rust how do you passivate the surface without paintin or priming to keep it from rerusting while you work on the piece. Thanks.

Re: Rust Remover Pasivation
 

A light coat of ATF works well. Easily removed with Prepsol or simular metel cleaner later before painting. Rod

Re: Rust Remover Pasivation
 

phosphoric acid solution will keep your cleaned metal from flash rusting . I have sandblasted parts hanging in dry storage that I treated for a couple of years that look great . Just waiting on me to finish body work .

Re: Rust Remover Pasivation
 

Electrolysis removes rust temporarily and the parts will flash rust if not protected. Phosphoric acid changes iron oxide (rust) to iron phosphate an inert substance. Usually a primer is not needed. Can't speak for Evaporust.

Re: Rust Remover Pasivation
 

Wow
Wish I knew what passivate meant! :-)
Wd-40 works for awhile. Then I scrub down with comet and water when ready to paint/prime. Can also use thinner and wipe down
Then prime immediately when dry

Re: Rust Remover Pasivation
 

Passivate: Sounds like a term heard very often and used to inform people that when they get a tax increase, they will be able to afford eating out every night, and be able put more money in their savings accounts.

Re: Rust Remover Pasivation
 

Try OSPHO, I have had sandblasted fenders hold rust free for a year in the garage after an application of OSPHO.

Re: Rust Remover Pasivation
 

Wiki sez:

Re: Rust Remover Pasivation
 

They tried passivation in Vietnam but it did not work.

Re: Rust Remover Pasivation
 

That might work in Arizona, but I can guarantee that here in New England, or anywhere on the coast you will get rust (unless you have climate controlled storage). My new steel fenders (stored inside) started showing flash rust within one month. I used OSPHO and a scotch bright pad to completely remove it before epoxy priming both of them. NOW they are safe for any amount of storage.

Re: Rust Remover Pasivation
 

As in a longer wrench provides enough purchase to turn a tight bolt? :)

Re: Rust Remover Pasivation
 

I couldn't PASSIVATE my Dog, when he wuz doin' a WOLF like SNARL at a stranger, at the door!
Bill W.

Re: Rust Remover Pasivation
 

I was also specifically referring to parts which have undergone electrolysis or evaporust, not new sheet metal or sandblasted items, for example.


Well that may be possible. Evaporust leaves a dark grey coating that seems to be pretty inert. However if in your effort to get a very clean part, you have scrubbed some of it away, rust will move right in! Your safest path is to epoxy prime all bare metal. Then you can relax and take your time! :D

Re: Rust Remover Pasivation
 

I've got some parts like this but I'm unsure whether it is a good idea to use epoxy paint over it?

Re: Rust Remover Pasivation
 

It's held back the rust for several years in the humid Florida.

Re: Rust Remover Pasivation
 

I use oxalic acid to remove rust,then rinse,scrub,rinse,dry. If I don't prime the part then I put a coat of cosmoline on it.

Re: Rust Remover Pasivation
 

I cleaned Minervas' Zenith in T.S.P, old paint fell off, BUT after rinsing it, that sucker rusted in my hand! Dunked it & rinsed it 3 times, SAME thing!!
Dried it off, sprayed it with Rustoleum, in the oven @ 200 degrees & it looked SUPERB !
The carb ended up on Jack Scotts' pickup, he passed away, the truck was sold & the carb paint still looked GOOD.
Bill W.

Re: Rust Remover Pasivation
 

Another Definition:

Pasivation: A message from the control tower after reporting that your parachute failed to open.

Re: Rust Remover Pasivation
 

A MEMORIAL, "BILLS' CRATER":eek:
Bill Squish

Re: Rust Remover Pasivation
 

Plus 1 for phosphoric acid. Spray it on and let it sit for a few minutes then wipe dry with a paper towel. When you're ready to paint, scuff with scotchbrite pad, wipe down with prep-sol and fire away.