Passivation Equipment, Stainless Steel Passivation Equipment & Automated Cleaning Systems

Esma's Multi-tank Ultrasonic Cleaning/Passivation Systems can be used as effective passivation lines by housing heated cleaning solution in tank1, cascading (DI) rinse waer in tank 2, heated passivation solution in tank 3, and a final cascading (DI) waer rinse in tank 4.  Tank 5 is an optional hot air dryer.  Manual systems require operators to move baskets from tank to tank, digital timers (alarms) will indicate when baskets are to be moved.  Systems can be used with both citric and nitric acid, however, it is recommended to look into our automated systems when using nitric acid.

Esma offers these systems in a variety of standard tank sizes, however, custom applications are very common.  We build systems to fit your needs and sizes.

Esma offers these systems in a variety of styles and tank sizes (links below)

E782-CP-SA, Semi Automated

E782-CP

E386-5

E188-P

E598-72P

Process Flexibility for Diverse Production Requirements

Manual tank to tank systems offer a level of flexibility that automated lines cannot always match. Operators can adjust dwell times, agitation exposure, and chemistry contact based on part geometry or alloy type. This adaptability is valuable for facilities that process a wide range of components, prototypes, or low volume batches where cycle parameters may vary from run to run.

Modular Layouts That Support Incremental Capacity Expansion

Manufacturers often need to expand passivation capacity without committing to a full automated line. Esma’s modular tank configurations allow facilities to scale gradually by adding tanks, integrating dryers, or modifying chemistry stations as production needs evolve. This modularity helps companies align capital investment with actual throughput requirements.

Compatibility With a Wide Range of Facility Workflows

Manual systems integrate easily into existing shop layouts, making them suitable for operations with established material flow patterns. Tanks can be arranged to match operator movement, part staging, or inspection stations. This flexibility supports efficient use of space and minimizes disruption to current processes.

Ultrasonic Action That Enhances Cleaning Precision

Ultrasonic energy plays a key role in preparing surfaces for passivation, especially for components with internal passages or complex geometries. Esma’s ultrasonic tanks generate consistent cavitation that removes embedded contaminants and prepares surfaces for uniform passivation. This helps ensure that subsequent chemical stages perform as intended.

FAQ

When Should a Facility Choose Manual Passivation Over Automated Systems?

Manual systems are well suited for low volume production, prototype work, or components that require operator oversight between stages. They also integrate easily into existing workflows without major layout changes.

How Do Ultrasonics Improve the Passivation Process?

Ultrasonic cavitation removes contaminants from internal bores, blind cavities, and complex geometries, helping ensure that the passivation chemistry interacts evenly with the metal surface.

Can Manual Systems Be Configured for Unique Part Sizes?

Yes. Esma frequently builds custom tank dimensions and layouts to accommodate oversized components, long parts, or specialized fixtures.

Are Manual Lines Suitable for Nitric Acid Applications?

They can be used with nitric acid, but automated systems are generally recommended for facilities that require tighter control, reduced exposure, or higher throughput.

 

Esma brand ultrasonic aqueous cleaning solutions are uniquely formulated to aid Esma ultrasonic cleaners in the cleaning and passivation of top surfaces, internal bores, and blind cavities of medical device components. Esma ultrasonic solutions are available cleaning and passivation of all metals including polished aluminum, zinc, stainless steel, copper, brass, and ferrous metals.

Alkaline Detergents | Citric Acid Passivation Solutions