40K/100K/160K 60W Multiple frequency Ultrasonic Piezoelectric Ceramic Transducer For Cleaning Stainless Steel Knives

Ultrasonic vibrator is also called ultrasonic vibrator. In the industry, the whole connected with transducer and horn is called vibrator.
The ultrasonic vibrator realizes the mutual conversion between electrical energy and mechanical energy (acoustic vibration) by the piezoelectric effect of piezoelectric ceramics, and is a device that is amplified by the front and rear radiation cover blocks matched with acoustic impedance. The frequency is fixed during production and can be According to the needs of customers, the transducers with different frequencies are customized, and the transducer vibrator produced can only be fixed at this frequency. In fact, the ultrasonic cavitation threshold is closely related to frequency. The higher the frequency, the higher the cavitation threshold. The lower the frequency and the lower the cavitation threshold, the easier it is to produce cavitation.

In some places, such as when cleaning deep screw holes, it is advisable to use a vibrator with high radiation sound intensity. At this time, the radiator of the vibrator often has a sharpened focus shape to increase the sound intensity of the radiation surface. This kind of vibrator is generally not glued to the cleaning tank, but directly pulled out of the liquid for cleaning.
The distribution and bonding of ultrasonic vibrators in the cleaning tank At present, some ultrasonic cleaning machine products are densely distributed on the bottom or wall of the cleaning tank. The vibrators are arranged next to each other. The input power of the vibrator reaches 2 per square centimeter -3 watts, such a high strength will accelerate the cavitation corrosion of the surface of the stainless steel plate (the surface in contact with the cleaning fluid) and shorten the service life. On the other hand, the sound intensity will be too high. A large number of large bubbles will occur near the surface of the steel plate, increasing the sound transmission loss, and weakening the cleaning effect far away from the vibrator.
The bonding quality of the vibrator and the cleaning tank has a great influence on the quality of the ultrasonic cleaning machine. Not only must it be adhered firmly, but also the glue layer must be uniform, no lack of glue and no cracks allowed, so that the ultrasonic energy can be maximized in the cleaning liquid Transmission to improve the efficiency and cleaning effect of the whole machine. At present, some cleaning equipment is to prevent the vibrator from falling off the cleaning tank. The fixing method of screws and glue is adopted. Although the vibrator will not fall off in this connection method, there are many hidden dangers. If the screw welding quality is poor, for example, it is not perpendicular to the surface of the stainless steel plate, the glue layer will be uneven, even cracks or lack of glue, the energy transmission will be weakened; on the other hand, if the welding is not good, it will also affect the smoothness of the stainless steel surface, resulting in acceleration Cavitation corrosion, shorten the service life. One of the methods to judge the quality of bonding is to measure the temperature rise of the vibrator after filling the cleaning tank with water and turning it on for a period of time. If the temperature of one of the many vibrators rises very quickly, it indicates that the vibrator may not be well bonded. Because the sound radiation is not good at this time, most of the electric energy is consumed on the vibrator and generates heat. Another method is to measure the electrical impedance of the vibrator one by one under small signal conditions to judge the bonding quality.

The mechanism of ultrasonic cleaning is to make use of the physical effects such as cavitation, radiation pressure and sound flow in the cleaning liquid. It can exfoliate the machinery produced by the dirt on the cleaning parts, and can also promote the chemical reaction between the cleaning liquid and the dirt, so as to achieve the purpose of cleaning the object. The frequency of the ultrasonic cleaning machine can be selected by 10~500 kHz according to the size and purpose of the cleaning material, generally more than 20~50 kHz. With the increase of the frequency of ultrasonic transducer, Langerhans oscillator, longitudinal oscillator and thickness oscillator can be used. In the miniaturization aspect, radial vibration and flexural vibration are also adopted. Ultrasonic cleaning has become more and more widely used in various industries, agriculture, household equipment, electronics, automobile, rubber, printing, aircraft, food, hospital and medical research.

The transducer uses different piezoelectric materials to explain that:
The black chip is P4 series, which is a medium power emitting material with dual transmitting and receiving characteristics.
With low dielectric loss and high mechanical quality factor, it is mainly used in ultrasonic cleaning, ultrasonic atomization and so on.
The Yellow chip is P8 series, which is a high-power emission material with high mechanical quality factor.
Good stability, very low dielectric loss, especially suitable for making high-power ultrasonic transducers. Widely used in
Ultrasonic welding, ultrasonic emulsification, ultrasonic polishing, ultrasonic cleaning and so on.

Main Features:

• High Q value.
• Large amplitude.
• High conversion frequency, low heat.
• Output is stable.
• Strict quality control.

1.High efficiency : high quality mechine, high electro-acoustic conversion efficiency at the resonant frequencies.
2.Large amplitude : computer optimized structure, high vibration ratio , large amplitude front cover.
3.High power: In the influence of pre-stressed screw, piezoelectric ceramic energy can achieve to the most.
4.Heat-resistance: small resonant impedance, wide temperature range.

40K/100K/160K 60W Multiple frequency Ultrasonic Piezoelectric Ceramic Transducer For Cleaning Stainless Steel Knives