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Where can ultrasonic transducers be used?
Latest company news about Where can ultrasonic transducers be used?

Ultrasonic transducers are widely used. According to the industry, they are divided into industry, agriculture, transportation, life, medical treatment and military. According to the realized functions, it is divided into ultrasonic processing, ultrasonic cleaning, ultrasonic detection, detection, monitoring, telemetry, remote control, etc.; according to the working environment, it is divided into liquid, gas, biological body, etc.; according to the nature, it is divided into power ultrasound, detection ultrasound, ultrasound imaging, etc. .

 

Piezoelectric ceramic transformer

The piezoelectric ceramic transformer uses the piezoelectric effect of the polarized piezoelectric body to achieve voltage output. The input part is driven by a sinusoidal voltage signal and vibrates through the inverse piezoelectric effect. The vibration wave is mechanically coupled to the output part through the input and output parts, and the output part generates electric charge through the positive piezoelectric effect to realize the electric energy of the piezoelectric body. -Mechanical energy-two transformations of electrical energy to obtain the highest output voltage at the resonance frequency of the piezoelectric transformer. Compared with the electromagnetic transformer, this has the advantages of small size, light weight, high power density, high efficiency, resistance to breakdown, high temperature resistance, no fear of combustion, no electromagnetic interference and electromagnetic noise, and simple structure, easy production, and easy mass production. In some areas, it has become an ideal substitute for electromagnetic transformers. This type of transformer is used in switching converters, notebook computers, neon lamp drivers, etc.

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Ultrasonic motor

Ultrasonic motors use the stator as a transducer, use the inverse piezoelectric effect of the piezoelectric crystal to make the motor stator vibrate at the ultrasonic frequency, and then rely on the friction between the stator and the rotor to transfer energy and drive the rotor to rotate. Ultrasonic motors have small size, large torque, high resolution, simple structure, direct drive, no brake mechanism, no bearing mechanism, these advantages are beneficial to the miniaturization of the device. Ultrasonic motors are widely used in the fields of optical instruments, lasers, semiconductor microelectronics processes, precision machinery and instruments, robotics, medicine and bioengineering.

 

Ultrasonic cleaning

The mechanism of ultrasonic cleaning is to use physical effects such as cavitation, radiation pressure, and sound flow when ultrasonic waves are propagated in the cleaning liquid, which can peel off the dirt on the cleaning parts, and at the same time can promote the chemical reaction between the cleaning liquid and the dirt. Reaction to achieve the purpose of cleaning objects. The frequency used by the ultrasonic cleaning machine can be selected from 10 to 500 kHz according to the size and purpose of the cleaning object, generally 20 to 50 kHz. As the frequency of the ultrasonic transducer increases, Langzhiwan vibrators, longitudinal vibrators, thickness vibrators, etc. can be used. In terms of miniaturization, there are also radial and flexural vibrations using disc vibrators. Ultrasonic cleaning has been widely used in various industries, such as industry, agriculture, household equipment, electronics, automobiles, rubber, printing, airplanes, food, hospitals, and medical research.

 

Ultrasonic welding

There are two types of ultrasonic welding: ultrasonic metal welding and ultrasonic plastic welding. Among them, ultrasonic plastic welding technology has been widely used. It uses the ultrasonic vibration generated by the transducer to transmit the ultrasonic vibration energy to the welding area through the upper weldment. Due to the large acoustic resistance of the welding zone, which is the junction of the two weldments, local high temperature will be generated to melt the plastic, and the welding work will be completed under the action of contact pressure. Ultrasonic plastic welding can facilitate welding of parts that cannot be welded by other welding methods. In addition, it saves expensive mold costs for plastic products, shortens processing time, improves production efficiency, and is economical, fast, and reliable.

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Ultrasonic processing

The fine abrasive is applied to the workpiece with a certain static pressure together with the ultrasonic processing tool, and the same shape as the tool can be processed. During processing, the transducer needs to produce an amplitude of 15-40 microns at a frequency of 15-40kHz. Ultrasonic tools make the abrasive on the surface of the workpiece continuously impact with considerable impact force, destroy the ultrasonic radiation part, break the material and achieve the purpose of removing the material. Ultrasonic processing is mainly used for the processing of brittle and hard materials such as gems, jade, marble, agate, and cemented carbide, as well as the processing of special-shaped holes and fine deep holes. In addition, when the ultrasonic transducer is added to the ordinary cutting tool to vibrate, it can also improve the accuracy and efficiency.

 

Pub Time : 2020-09-11 13:12:34 >> News list
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