Proper rust prevention after ultrasonic cleaning is crucial for metal parts longevity. This guide covers industrial-grade passivation techniques, eco-friendly sealants, and cutting-edge nano-coatings to create durable anti-corrosion barriers while maintaining precise tolerances.
Deionized Water (80%) + Sodium Nitrite (5%) + Triethanolamine (15%)
Method | Residual Moisture | Equipment Cost | Suitable For |
---|---|---|---|
Centrifugal | <0.1% | $$$ | Precision bearings |
Vacuum Drying | 0.03% | $$$$ | Aerospace components |
Compressed Air | 0.5% | $ | General machinery |
Process Flow: Alkaline Clean → Acid Pickle → Passivation Bath (Cr-free) → DI Rinse
Metal Type | Recommended Coating | Thickness | Salt Spray Resistance |
---|---|---|---|
Carbon Steel | Zinc-Nickel Alloy Plating | 8-12μm | 1000+ hours |
Aluminum | Chromate Conversion Coating | 0.5-1.5μm | 168 hours |
Copper Alloys | Benzotriazole Inhibitor | Molecular | 500 hours |
Prevention is always cheaper than remediation – implementing these protocols can reduce corrosion-related losses by 83%. For mission-critical components, combine electrochemical passivation with VCI packaging for maximum protection.
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