Is this normal with a rust converter? (1 Viewer)

[Mackeath]

Greetings all,

So I had a couple of little rust spots on my cruiser where the roof rack was attached. Since I had it painted 2 years ago and its still under warranty, they are going to do a touch up for free.

I thought that i would be clever and repair the rust first thinking I could do a better job and began reading the boards here on how to do it.

So, I scrubbed the rust away with steel wool and then some rust disolver and got it to be bare metal. Then, I applied some rust converter. Quite liberally (thinking more was better) getting it saturated on the bare metal and a little of the existing paint around the sides. This rust converter supposedly turns into a base for painting.

After 5 days now, this is what it looks like. At first it was clear, no black, now its some black and some stuff that looks like rust again. Did I do this wrong? If so, what do I do now?

Thank you for any help you can give me.

 

[Mackeath]

And as a further note, it was completely removed underneath and was bare metal where it is now slightly orangish.

 

[sterling]

Not sure if this helps but,.
Every time I have used rust converter the rust turned black or a very deep purple color.
It never changed colors after that.

I did not sand before though, I used it straight on the rust bubbles or spots.
Rusty fj60 wheel wells to be exact.

 

[Mackeath]

These are the products I used



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[Mackeath]

The dissolver.



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[Tapage]

I use rust converter from Würth and rust became black or deep purple as mentioned before .. and stays like that ..

 

[Spike Strip]

Normal. Rust converter contains phosphoric acid that converts rust (iron oxide) to Iron phosphate which is black. Iron phosphate is very rust resistant.