June 29, 2016
Ultrasonic cleaners work by generating ultrasonic acoustic waves into a cleaning solution. During the expansion phase of the wave, the low pressure results in cavitation bubbles in the liquid while the subsequent compression phase collapses the bubbles suddenly. This bubble action removes impurities and contamination from surfaces to be cleaned. Ultrasonic parts cleaners are fast and cost-effective, eliminating the use of harsh chemicals and the mechanical scrubbing required for traditional cleaning solutions.
Low frequency cleaners using ultrasonic frequencies of 26 kHz or 38 kHz use a much longer wavelength than high frequency cleaning systems operating above 200 kHz or in the MHz range. With a lower frequency and longer wavelength, there is more time for the bubbles to grow and the energy with which they collapse is higher. At the highest frequencies the bubbles are very small and the cleaning action from the collapse of the bubbles is very gentle. While cleaning intensity is controlled by the frequency, the number of bubbles depends on the power of the ultrasonic parts cleaner. High power units work faster and can handle larger parts while low power cleaners are for small systems.
Low Frequency Ultrasonic Parts Cleaners for Robust Cleaning
Kaijo ultrasonic cleaning systems such as those using the Phenix III ultrasonic generator operate at 26 kHz or 38 kHz and are suited for the cleaning of robust parts with stable surfaces. If an ultrasonic parts cleaner is used for parts that are not suitable, surface pitting can result and the parts may be damaged. Systems based on the Phenix III are suitable for cleaning machined parts, ceramics, glass, medical devices and jewelry. The generator is available with outputs of 600 W and 1200 W for cleaning parts of different sizes and the corresponding tanks can hold small or large parts.
Systems such as those based on the Phenix III generator are suitable for general purpose cleaning in a manufacturing environment that does not deal with delicate parts. An ultrasonic parts cleaner suitable for a wide variety of applications, the flexible Phenix III is a cost effective and reliable solution. It can be purchased as an immersible set for an existing tank or in a turnkey configuration with Kaijo transducers and tanks designed specifically to work with the ultrasonic generator.
High Frequency Cleaning for Delicate Parts
High frequency ultrasonic cleaners are used for parts that could be damaged by the robust bubble action present at 26 kHz and 38 kHz and for light surface contamination. Frequencies up to the MHz range can clean parts such as printed circuits, semiconductor components, optical components and precision-machined parts. The cleaning action is powerful enough to remove surface films and particles down to sub-micron sizes but gentle enough so that relatively soft surfaces and microscopic details are not affected.
Ultrasonic cleaners such as the Kaijo Quava models can generate a wide variety of frequencies and powers to deliver the specific cleaning intensity and power required for a particular application. Decision makers and production managers in manufacturing plants that have part cleaning requirements have to decide whether to purchase a low-frequency all-purpose ultrasonic parts cleaner for robust cleaning, a high-frequency model if only delicate parts are to be cleaned, or a general purpose parts cleaner able to generate both low and high frequencies. Kaijo’s ultrasonic parts cleaners are available to cover all these needs. If you need more information on any of Kaijo’s products and want a quote call 408-675-5575 or email [email protected].
June 21, 2016
Industrial cleaning systems that utilize ultrasonic technology can clean a variety of objects and parts without aggressive chemicals or rough scrubbing. Ultrasonic tanks hold the cleaning solution and the part to be cleaned. The tank mounted transducers generate the ultrasonic signal. Ultrasonic cleaning is especially suitable for objects such as ceramics, glass, optical devices, medical devices and machined parts.
When the ultrasonic transducers are used in a water-based cleaning solution, the ultrasonic energy creates cavitation bubbles that form and collapse at the ultrasonic frequency. The part to be cleaned is suspended in the tank and immersed in the cleaning solution; the bubble action removes surface contamination. A typical cleaning cycle might take 10 minutes and even parts with complex shapes can be cleaned effectively.
Kaijo’s ultrasonic tanks and baths are specifically designed for ultrasonic cleaning applications. The tanks have to be built to withstand ultrasonic sound waves and to support the transducers in their cleaning action. Systems are available with transducers and generators in turnkey configurations and custom systems can be designed to meet specific needs.
The ultrasonic tanks are made of gloss polished, thick stainless steel for excellent durability. Standard sizes range from 270 mm x 370 mm (10.6 in. x 14.6 in.) with a height of 250 mm (9.8 in.) to 520 mm x 550 mm (20.5 in. x 21.7 in.) with a height of 300 mm (11.8 in.). Kaijo can also provide custom sizes.
Tanks with transducers and generators are available in a choice of ten different frequencies. Lower frequencies deliver larger bubbles and more robust cleaning while the higher frequencies are used for more delicate cleaning action. Systems and tanks are available with power outputs of 600 W and 1200 W per generator. The higher the power the more bubbles are generated and the more powerful the cleaning action.
In addition to providing turnkey systems, Kaijo offers matched sets of generators and transducers for installation into existing tanks. A user can install the transducers in the tanks and connect the ultrasonic generators to construct complete ultrasonic cleaning systems.
Transducers types are immersible, bolt-on or tank mounted. Immersible transducers are independent units that can be placed in tanks horizontally or vertically while bolt-on and mounted transducers can be placed at the bottom or on the sides of the tank. The transducers have heavy metal plates to transmit the ultrasonic energy to the liquid and they are designed to withstand a hot, ultrasonic cleaning environment.
Kaijo’s ultrasonic generators are matched to their transducers and to produce high performance cleaning action. Generators such as the Phenix III are cost effective, flexible solutions that work well with the Kaijo ultrasonic tanks and transducers operating at 26 kHz or 38 kHz. These and the Kaijo turnkey ultrasonic cleaning systems offer unparalleled savings in cost and time compared to other types of cleaning systems. The ultrasonic bubbles remove all kinds of foreign matter from part surfaces and can clean inside holes and crevices where other cleaning methods fail. In addition, ultrasonic cleaning is environmentally friendly by eliminating harsh cleaning chemicals and cleans effectively without mechanical damage to the items to be cleaned.
Ultrasonic tanks and baths together with Kaijo’s transducers and generators or the Phenix III turnkey ultrasonic cleaning systems represent a cost-effective and reliable cleaning solution to a wide variety of industrial and research lab cleaning needs. If you have any questions about using ultrasonic technology for your application or need a quote on any of Kaijo’s ultrasonic baths and tanks call 408-675-5575 or email [email protected].Read More