Ultrasonic cleaning
Cleaning with ultrasound is widespread and is used E.g. in mechanical engineering and in the jewelry industry for the cleaning of metals and plastics.
Ultrasonic cleaning takes place in a liquid medium (E.g. water and detergent). The energy produced by the ultrasonic generator (frequency range above 20 kHz) is converted into mechanical energy through the tube. The olekulare context of the liquid on existing Inhomogeneities (pollution, cleaning goods) is torn by sound pressure amplitude, smallest bubbles in the cleaning fluid which are very unstable form. These bubbles implode, producing powerful pressure pulses. This process is called cavitation, cavitation causes a gentle and intensive cleaning at all points, which are achieved by the cleaning fluid.
The right choice of the ultrasonic device
The size of cleaning objects determines the size of the tub and the required device type. In the selection of the device, the basket dimensions must be observed.
To avoid overloading the unit, it is advisable to choose of a slightly larger device. This results in even room for more applications that can be added in the future use.
Have a heater to an ultrasound machine?
Heated cleaning liquids reduce cleaning time. Dirt in heated liquids are removed faster. Devices with heating are usually used for cleaning in the laboratory.
Not heat disinfection liquids, because it can come from 40 ° C to a protein coagulation, which complicates cleaning and disinfection. Non-heating devices are used.
What type of equipment is necessary?
The cleaning objects and reaction vessels must never touch the tank bottom. The basket avoids scratches on cleaning product and water pan base. Use vessels are hooked into hole cover for the cleaning of small parts or even to work with aggressive solutions. The use of single suspended trays made of plastic are necessary for work with acids or acid residues are removed.
What liquids may be used?
In principle, that prior to the use of strong alkaline or strongly acidic preparations the application should be considered mild, neutral or universal cleaning preparations. Some cleaning tasks can be solved only with special cleaners. These requirements be handled through special formulations (E.g. by koplexbildnerfreie prepare samples for laboratory and electroplating, the optical industry and for high vacuum applications).
Water cleans without detergents limited. Use any household cleaners or Demineralised water.
The selection of the suitable cleaner is essentially dependent on the following factors:
• Material of the cleaning material
• Type of contamination
• Amount of adhering impurities
Why is a cleaning with ultrasound there?
Ultrasonic spreads in liquid media in the form of a longitudinal wave (LW).
As a result of the sound pressure there will be compressions and Rarefactions. The tensile forces in the pull phase of the vibration (dilution) can tear the liquid - it comes to the so-called cavitation;
Solution operations are accelerated, the resulting currents and turbulence in the liquid penetrate the dirt.
Advantages of an ultrasonic cleaning:
• Improvement of the cleaning result
• Intensive and gentle cleaning (no manual editing, no damage to the)
• Surface of the cleaning material
• No dirt in Deepenings and pores
• Saves time and hence cost reduction
• Simple and safe handling
• Less chemical additives as required with conventional cleaning processes.
Necessary components for ultrasonic cleaning:
The result of ultrasonic cleaning is essentially determined by three components:
• Device
• Accessories
• Chemistry
|
