All You Should Know About Ultrasonic Cleaning

The use of ultrasound has penetrated a wealth of industrial branches and now it is widely used by zillions of facilities servicing a variety of sector. Ultrasonic cleaning in particular has formed a separate, self-sufficient industry for several good reasons. Thus, ultrasonic cleaning technology is applicable to virtually all industries for removal of coolant, lapping pastes, greases, and for servicing and repair of equipment, removal of operational pollution (AFS salt deposits, of grease, soot, carbon and etc.).

To work effectively it is enough to accommodate the product in the wash solution. To do this, it needs to create a disturbance (bubbling, rocking parts in a solution, etc.), and the most effective source to cause such perturbations is ultrasound.

The principle of ultrasonic cleaning systems is based on ultrasound cavitation phenomenon occurring in a fluid when subjected to intense ultrasonic vibrations. Mechanical vibrations are caused by ultrasonic emitter that transmits elastic waves in the washing liquid that are transformed into pulsating gas bubbles. The bubbles collapse under the influence of acoustic pressure; each bubble slammed is accompanied by a pressure pulse, a local increase in temperature, and the emergence of microjets microcurrents. This creates intense hydrodynamic effects on the treated surface and causes the removal of contaminants from it. Local thermal shocks additionally contribute to efficient cleaning of contaminated surfaces. The emergence of microcurrents and microjets facilitates the introduction and penetration of cavitating cleaning solution in the most difficult of the microcavity and channels of small section that allows you to quickly and efficiently wash contaminants from various parts of complex configuration.

The manufacturers & products

From simple single-chamber devices to complicated, fully automated lines with an ability of integration into the pipeline, the modern manufacturers offer an extensive array of devices. Hilsonic, one of the leading ultrasonic cleaner production players in the UK, offers more than 20 design options with custom features on demand as well as fully-custom solutions. And this is just a single brand.

To get a better understanding of functionality, here’s the overview of out of the box ultrasonic cleaner features:

  • Ultrasound and heater block when the device is open.
  • Protection of electric heater and radiators from ‘dry’ start-up.
  • ‘Drain – overflow’ cleaning solution device
  • Bubbling compressed air solution device.
  • Device for rinsing parts.
  • A sensor monitoring the temperature from 20 to 90°C and performing corresponding operations.
  • Timer with automatic shut-off and countdown from minutes to hours.
  • Adaptive dynamic control of ultrasonic field.
  • Net suspension parts for the customer.
  • Storage for blowing parts with compressed air.
  • Device for connecting an external pump, filter system or auxiliary tank.

Cleaning is carried out in aqueous solutions of environmentally friendly technical detergents. The parts that need cleaning do not require additional recovery after purification or decontamination. The combination of high-intensity ultrasound and environmentally friendly detergents gives new technology advantages over traditional technologies of thermal, mechanical, chemical treatment, and combinations thereof. The method boasts impressive cost-efficiency through replacing manual labor. (more…)