The ultrasonic transducer (converter)is a part that could transform the electrical energy to the
mechanical energy (ultrasonic). The most mature and reliable product now is piezoelectric
transducer, which transform between electrical energy and the sound
energy by the piezoelectric effect. It is composed of the central piezoelectricity
ceramic component, metal cover board in front and back, the pre-stressed force
screw rod, the electricity pole piece and the insulation tube. This kind of transducer
(bolt fastening transducer), shapes in sandwich, can generate the stable
ultrasonic wave while the load changed. It is the most essential and the main
method to obtain the power ultrasonic generator. According to the different designation,
it can be divided into columnar type (the diameter of the metal cover
board in front and back are the same), upside-down the trumpet (front cover board
diameter to minish gradually through the arc), the columnar type steel with post
operculum, and the columnar type with nodal point and so on.
Main characteristics:High Efficiency: of high mechanical factor. High transfer efficiency is obtained
when working in resonance frequency.
Big amplitude: designed and chosen by computer, high rate in oscillation speed and
big amplitude in front operculum.
Big Power: under the function of the pre-stressed force screw rod, the piezoelectricity
ceramics can work freely in the highest level of power.
In good heat resistance: of small resonance impedance, less heat produced, can be
used in a wide range of temperature with long life and high reliability.