What Is Ultrasonic Cleaning?

The ultrasonic cleaning process begins by immersing parts in a specially designed ultrasonic cleaning tank filled with a liquid solution. This solution typically consists of water combined with a cleaning agent tailored to the type of contamination and the material being cleaned (such as stainless steel, aluminium or titanium).

Cavitation: The Core of Ultrasonic Cleaning

An ultrasonic cleaner generates sound waves at frequencies typically ranging between 20 kHz and 400 kHz. These sound waves create millions of microscopic bubbles in the cleaning solution. This phenomenon is called cavitation.

When these bubbles collapse (implode):

• Micro energy bursts are released

• Contaminants are loosened from the surface

• Even microstructures and hard-to-reach areas are cleaned

The result is a powerful yet controlled cleaning process without mechanical stress on the component.

Compared to manual cleaning or traditional cleaning methods, ultrasonic cleaning offers significant advantages.

1. Deep and Uniform Cleaning

Ultrasonic cleaning reaches:

• Small cavities

• Threads

• Weld seams

• Complex geometries

This makes it ideal for precision parts and technical components.

2. Safe for Delicate Materials

Despite its effectiveness, ultrasonic cleaning is:

• Non-abrasive

• Non-mechanical

• Safe for sensitive surfaces

It is suitable for electronics, fine mechanical components and thin-walled stainless steel parts.

3. Efficient and Repeatable

The ultrasonic cleaning process is automated and precisely controlled, making it:

• Fast

• Consistent

• Suitable for batch and serial production

Repeatability is particularly important in high-tech, semiconductor and medical applications.

4. Reduced Use of Aggressive Chemicals

Ultrasonic cleaning generally requires fewer harsh chemicals compared to conventional cleaning methods. This makes the process:

• More environmentally friendly

• Safer for operators

• Easier to control

Ultrasonic cleaning is commonly used for:

• Stainless steel

• Aluminium

• Titanium

• Copper

• Brass

• Plastics

• Electronic components

In particular, ultrasonic cleaning of stainless steel parts is frequently applied after surface finishing processes or prior to cleanroom packaging.

Ultrasonic Cleaning in a Cleanroom Environment

In industries such as high-tech manufacturing, semiconductor production and food processing, preventing recontamination is just as important as the cleaning itself.

For this reason, ultrasonic cleaning is often performed in a controlled cleanroom environment, which ensures:

• Controlled air quality

• Minimal particle concentration

• Controlled handling and packaging

This guarantees that cleaned components remain contamination-free until delivery.

Ultrasonic cleaning is the right solution when:

• Strict cleanliness requirements apply

• Complex components must be cleaned thoroughly

• Manual cleaning is insufficient

• A repeatable and validated process is required

• Components are intended for high-tech or food-grade applications

Ultrasonic Cleaning at Van Geenen

At Van Geenen, we operate a professional ultrasonic cleaning system within our modern cleanroom facilities. This allows us to combine:

• Advanced ultrasonic cleaning technology

• Controlled process management

• Cleanroom cleaning and packaging

• Expertise in stainless steel surface finishing

We provide ultrasonic cleaning services for industries including:

• High-tech manufacturing

• Medical applications

• Mechanical engineering

• Electronics

• Food processing

Thanks to our expertise in materials and surface treatments, we ensure that every component meets the required cleanliness standards.

Is ultrasonic cleaning suitable for stainless steel?

Yes. Ultrasonic cleaning is highly effective for stainless steel components, especially where strict cleanliness requirements apply.

Does ultrasonic cleaning remove oil and grease?

Yes. Oil, grease and fine particles are effectively removed through the cavitation process.

Is ultrasonic cleaning safe for delicate parts?

Yes. Because no mechanical abrasion occurs, ultrasonic cleaning is suitable for fragile and precision components.