High Power Ultrasonic Transducer

As the name suggests, ultrasonic horn can change the amplitude of ultrasonic transducer. Horn is a kind of passive device, which does not produce vibration itself. Only the input vibration changes the amplitude and then emits it, and it also completes the impedance transformation. The ultrasonic transducer can produce regular vibration under appropriate electric field excitation, and its amplitude is generally 10 μ M, such amplitude is not enough to directly complete the welding and processing process. With a properly designed horn, as long as the material strength is sufficient, the ultrasonic amplitude can vary in a wide range, more than 100 μ m.

After connecting the ultrasonic generator, high power ultrasonic transducer and horn vibrator, we call it a complete ultrasonic system. On the other hand, in the Longitudinal Tensile vibration of the horn, the particle motion directions on the left and right sides of the cross section are exactly the opposite, which is equivalent to the existence of a relatively static nodal surface, which is also the best fixed point of the vibrator. Deviation from this node will reduce the working efficiency of the vibrator, which is usually called leakage wave. Generally speaking, aluminum horn has high sound transmission efficiency, but the material strength is low, and cracks and screw hole sliding wires are easy to appear; Steel horn has high strength, but relatively large acoustic impedance. Titanium alloy horn has good comprehensive performance, but its disadvantages are high price and difficult processing.

Based on the consideration of serving customers and improving product quality, we can provide customers with complete ultrasonic vibration systems such as ultrasonic generator, high power ultrasonic transducers with ultrasound welding horns and assembly shells, wires, plugs, etc., so as to minimize unnecessary labor of customers.

FAQ

Q: Suggestions on installation of high power ultrasonic transducer

1. Cut off the power supply before installation;

2. No load test after installation to ensure that the frequency and power of the sensor are consistent with that of the generator;

3. It is recommended to install normal temperature air cooling device near piezoelectric ceramics;

4. It is suggested to adopt digital automatic frequency tracking circuit;

5. Fixed flange;

Q: Working principle of ultrasonic welding:

A: The ultrasonic power supply and transducer transmit the ultrasonic energy to the welding area through the upper weldment. As the welding area is the joint of two welds, in which the acoustic resistance is large, local high temperature will be generated. Due to the poor thermal conductivity of plastic, nylon, chemical fiber, non-woven fabric, multilayer cloth, gold cloth and other materials, they cannot be distributed in time and gather in the welding area, which resulting in the rapid melting of the two contact surfaces, plus a certain amount of pressure, so that they are integrated. When the ultrasonic wave stops, the pressure continues and has a small duration to solidify and form a solid molecular chain for welding.

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