How can I completely remove rust from steel before I paint it?

Question

I have tried rust neutralizer and used a steel brush later to clean and paint it but after sometime rust still appears underneath the paint. Will oil be the right agent to soften the rust and eventually remove it ?

Answer 1

There is a very successful 3 step system by KBS Coatings:
Step #1: Klean it with AquaKlean! This remarkable, heavy-duty, water-based concentrate penetrates so deeply and effectively that all contamination and unwanted surface residue is removed. You are left with a completely clean surface which is of utmost importance for a coating's ability to penetrate and permanently adhere.

Step #2: Blast it with RustBlast! This powerful water-based rust remover and zinc phosphate metal etch provides an ideal surface for optimal coverage and permanent adhesion. Your prepared surface now yields enough texture for a deep chemical bonding of any coating to the base metal and rust.

Step #3: Seal it with RustSeal! This incredible, non-porous, flexible coating chemically bonds to metal to permanently seal rust by blocking all pores and locking out moisture and oxygen. RustSeal is so indestructibly tough it won't crack, blister or peel even when exposed to the most aggressive chemicals. Topcoat RustSeal with any paint of your choice if desired, or to protect from dulling in cases where exposure to sunlight will be prolonged.

Answer 2

RE:
How can I completely remove rust from steel before I paint it?
I have tried rust neutralizer and used a steel brush later to clean and paint it but after sometime rust still appears underneath the paint. Will oil be the right agent to soften the rust and eventually remove it ?

Answer 3

You'll have to sand down the surface and then use a rust remover product on it. You must use an undercoat paint that is specifically formulated for steel and that has anti rust properties. Afterwards you can paint it with normal paint.

Answer 4

Sherwin Williams Rust Converter

Answer 5

You got to sand it down till all the rust is gone.

Sounds like the rust is spreading from a different point of exposure. Find out where & protect that area as well. Have you treated the metal before painting it? Maybe thats why the rust keeps appearing. First apply rust protector before applying paint.

Answer 6

the vary nature of steel means that u will never remove all the moisture surrounding it and thus the rust as it reacts with the air.
however there is a product which will prvent the moisture pentrating to the steel and u can paint over it. it is used widely by commercial building and steel fabricators.
it is GALVAFROID Zinc Coating.
http://www.wrmeadows.com/wrm00040.htm
from this link u will have enough info to order some from ur lock hardware store.

Answer 7

If small item then use emery paper followed by kerosene wash, allow dr for some time then do paint.
If larger and hard items then shot basting is to be done for rust removal

Answer 8

You can steel brush it... There is a product called rust reformer that works very well to recoat and protect the steel from future damage.

Answer 9

Go with the 3 steps from KBS. We've used their rust prevention & repair products successfully ourselves. Great company to deal with.

Answer 10

KBS makes a product called RustBlast that will work for you. Let it soak on the steel for 20 minutes and then rinse and wipe off. http://www.kbs-coatings.com/RustBlast-C33.aspx