High Quality 40KHz High Frequency Ultrasonic Transducer For Spot Welding Application

Composition of ultrasonic transducer:

The ultrasonic transducer consists of a central piezoelectric ceramic element, front and rear metal cover plates, prestressed screws, electrode sheets and insulating tubes. This kind of sandwich transducer (also known as: bolt-fastened transducer) generates stable ultrasonic waves when the load changes, and is the most basic and main method to obtain a power ultrasonic drive source.

According to different designs, the shape of the ultrasonic transducer mainly includes column type (the diameter of front and rear metal cover plates are the same), horn type (the diameter of the front cover plate is excessively reduced by the arc type), and the column type has a section in the middle.

Specifications:

Model	SP-3040-4Z
Frequency	40Khz
Output power	1000Watt
Joint bolt	M8
Ceramic disc Diameter	40mm
Quantity of Ceramic discs	4pcs
Capacitance	5.5~6.5nF
Amplitude	2um
Application	Spot Welding Machine

Transducer production core step:

Because piezoceramics are weak in tension, a static compressive prestress must be applied to prevent the piezoceramics from experiencing tensile stresses when the transducer vibrates ultrasonically. The prestress also assures that the piezoceramic interfaces make good contact so that the acoustic waves are transmitted well with minimum loss. The compressive prestress must be sufficient to prevent the piezoceramics from ever experiencing any ultrasonic tensile stress and prevent any lateral piezoceramic slippage. In the manufacturing process of ultrasonic transducers, the size of prestressing plays a decisive role in quality.

The piezoelectric ceramic impedance and frequency will stabilize with the prestress's increase. A larger prestress can reduce the impedance of the transducer. If the piezoelectric ceramic is not sufficiently clamped, the transducer impedance will become larger. But larger is not better.

Applied Range:

Ultrasonic transducer,ultrasonic generator and ultrasonic horn constitute a whole ultrasonic system, which can be widely used to do welding in various kinds of industries.

Competitive Advantage: 

1. Low resonance impedance

2. High mechanical Q value

3. High electroacoustic conversion efficiency

4. Good stability, low heat

5. Good consistency of frequency and static capacity

6. Provide customized service

7. One year warranty

Other Transducers Display: