Multi-Stage Systems
Multi-Tank Ultrasonic Cleaning Machine - Clean, Rinse and Dry in One Line
A configurable 2-8+ stage system combining rough wash, fine wash, rinsing, treatment and drying around the required cleanliness target.
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LENJEX Solution Center
Rust & Oxidation Removal
Ultrasonic cleaning removes rust, scale and oxide films using controlled chemistry and cavitation, then rinses and protects the surface.
Overview
Rust and oxide treatment
Oxide removal combines chemistry with mechanical energy.
Rust, heat-treat scale and oxide films are chemical and sometimes tightly bonded to the surface. Ultrasonic cavitation assists an acidic or purpose-specific cleaning solution in lifting oxide from recessed and complex parts without the inconsistency of manual acid dipping.
Because acid can affect metals, concentration, temperature, time and material are carefully controlled, followed by thorough rinsing and, where required, passivation or surface treatment.
Process Considerations
Rust-removal decisions
Material and oxide determine the process.
Rust on steel, scale after heat treatment, and oxide on non-ferrous metals need different chemistry.
- Red rust on ferrous steel
- Heat-treat scale
- Oxide on copper, aluminum or other alloys
Acidic or purpose-specific formulations dissolve oxide; strength and time are controlled to protect the base metal.
- Phosphoric or compatible acids
- Specialty oxide removers
- Rust inhibitors
Long exposure to aggressive chemistry can damage parts; cycle time is set and validated.
- Controlled temperature
- Timed exposure
- Immediate rinsing
Complete rinsing removes acid, and a passivation or rust-protection step protects the cleaned surface.
- Multi-stage rinse
- Passivation
- Rust inhibitor or prompt drying
Recommended Route
An oxide-removal route
Validated on representative parts.
- IdentifyIdentify metal and oxide type
- CleanPre-clean oil before oxide treatment
- TreatApply controlled oxide-removal chemistry with ultrasound
- RinseRinse thoroughly and neutralize
- ProtectPassivate or add rust protection
Related Systems
Equipment for oxide removal
Filtration and controlled stages support the process.
Multi-Tank & Automatic Cleaning Systems
Clean-Rinse-Dry Multi-Stage Ultrasonic System
Compact multi-stage ultrasonic wash, rinse and drying system
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Industrial Single-Tank & Special Cleaners
General-Purpose Heated Industrial Ultrasonic Cleaner
Versatile heated single-tank ultrasonic parts cleaner for general industry
View configurationSolution Questions
Planning the application
Yes. Cavitation assists controlled rust-removal chemistry in lifting oxide from parts, especially complex shapes; severe scale may need a separate treatment.
Concentration, temperature and time are controlled and validated against the metal, followed by thorough rinsing to protect the base material.
Steel parts may be passivated or given rust protection after oxide removal, depending on the application.
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