When You Need Chromating (or an Alternative) After Rust Removal
Rust Removal Alone Is Not Enough If:
- You want to prevent flash rust (rust forming again within hours or days)
- The part will be stored or painted later
- The metal is iron/steel and will be exposed to moisture or air
Why?
Rust Removers remove rust effectively — but they also:
- Strip the protective oxide layer
- Leave a clean but highly reactive surface
- So, flash rusting occurs quickly, especially in humid air
What Chromating Does
- Forms a passive, corrosion-resistant layer
- Especially used on aluminum, zinc, and steel
- Helps in paint adhesion and long-term protection
But: Chromates (especially hexavalent chromium) are toxic, regulated, and being phased out globally.
Recommended Approach (If NOT Using Chromate):
After Rust Removal:
-
Neutralize surface
→ Use mild alkaline rinse RXSOL Alkaline Cleaner -
Apply temporary corrosion inhibitor
→ Use something like: -
OR Apply Primer/Paint Immediately
→ Especially after phosphoric acid treatment (etches + preps)
For effective Rust Removal Solutions, feel free to write to us on rxsoldubichem @ gmail.com
