Chemical rust converters

[Jadlian]

Do these "Stop rust in it's tracks" claims actually have any truth to them?
I have some spots of rust https://10carbest.com/best-rust-converters that are in a "helluva job to cut out and weld" spot and I obviously need to stop it, so, what is the way forward, please?

 

[trevmar]

You cannot stop rust as long as there is moisture/damp/water and any amount of oxygen present, and if the piece of steel/iron is in contact with a more corrosion resistant metal that will make it even worse. The best you can hope for is to slow the process down.

Remember iron/steel is obtained from iron ore using huge amounts of energy, and it is the natural order of the universe to want to return it to that state and release that energy.

 

[JoeS]

...I have some spots of rust that are in a "helluva job to cut out and weld" spot and I obviously need to stop it, so, what is the way forward, please?

Hope you're not talking about a Bolt. If so, where, exactly, are the rust spots?

 

[Joe Cherra]

Rust-Oleum makes a product that "turns rust into a primer" type coating that can be painted over. I've used it and it seems to work

 

[Joe Cherra]

You’re right to question those claims—many rust converters can only slow rust down, not completely stop it, especially in tricky spots. The best approach might be using a rust converter followed by a rust-sealing paint to protect the area as much as possible. Regular checks are also key since even treated rust spots can need maintenance over time.

Iron out contains sodium bisulfite and sodium meta bisulfite. I used it to remove the iron oxide stains on the walls and bottoms of swimming pools in the water treatment business. Chlorine reacts with the iron carbonate in well water to produce iron oxide, hence the rust stains. The bisulfite radical reduces the oxite leaving unoxidized iron

 

[BillM]

I’m not a chemist, but it reads as though the vapors from Iron Out are nasty. It is probably good idea to be sure there is adequate ventilation. Of course, that’s true of most chenmical vapor.

 

[Joe Cherra]

I’m not a chemist, but it reads as though the vapors from Iron Out are nasty. It is probably good idea to be sure there is adequate ventilation. Of course, that’s true of most chenmical vapor.

It's a powder. If Rust O Lium has the Sulfite listed in its ingredients, it should work. You need to use a product that will reduce the Iron oxide to Iron