Ten Common Misconceptions About Piezoelectric Ceramic Used For Ultrasonic Welding

Ultrasonic metal welding was accidentally discovered in the 1830s. When it is the current spot welding based on electrode piezo transducer datesheet ultrasonic vibration, it was found that the current can not be welded, thus developing the ultrasonic metal cold welding technology. Although pzt pickup piezo of ultrasonic welding is found earlier, but so far, its mechanism of pickup piezo transducer is not yet clear. It is similar to friction welding but differs in that the ultrasonic welding time is very short and the temperature of the piezo transducer datesheet is lower than the recrystallization temperature of the metal; it is not the same as the pressure welding because the added pickup piezo transducer static of pressure is much smaller than the pressure welding. Generally believed that in the initial stage of the ultrasonic welding process, tangential vibration is to remove the metal surface oxide, and make the rough surface of the protruding part of the repeated micro-welding, deformation and destruction of the contact area increases, while the weld zone temperature is rising, piezo crystals for sale of plastic deformation occurs at the weldment interface.Under the action of contact pressure, when the distance is between atoms gravitational attraction can be approached each other, the welding spot is formed. At present, a more accepted the principle of ultrasonic metal welding and welding metal materials, the ultrasonic generator is frequency vibration current generated by the transducer using the inverse piezoelectric effect to convert it to elastic mechanical vibration energy, and through acoustic system input to the weldment. Under the joint action of static pressure and elastic vibration energy, the contacting interface of two welded workpieces destroys the oxide film or other surface attachments are through friction, temperature rise and deformation, and makes the metal atoms between pure interfaces infinitely close to each other to generate combination and diffusion, to achieve a reliable connection.