As an energy conversion device, the ultrasonic transducer can efficiently and stably convert electrical power into mechanical power (ultrasound) during the conversion process, but there will still be losses in the actual process. According to the law of conservation of energy, it must be Reactions occur in other places, such as heating of the ultrasonic transducer.

The first reason for the heating of the ultrasonic transducer:

The workpiece to be welded will generate heat or the material processed by ultrasonic will generate heat, or the mold (tool head) and the horn will generate heat after a long time operation, and these heats will be transferred to the transducer.

The second reason for the heating of the ultrasonic transducer:

The power loss of the transducer itself. Since 100% energy conversion efficiency cannot be achieved, the part of the energy lost must be converted into heat. Temperature rise will cause changes in the parameters of the transducer, which will gradually deviate from the best matching state. What is more serious is that temperature rise will cause the performance of piezoelectric ceramic wafers to deteriorate. This in turn makes the transducer work worse and heat up faster, which is a vicious circle. Therefore, we must provide the transducer with good cooling conditions, which is generally air-cooled at room temperature; if necessary, cold-air air cooling can also be used. Under normal conditions, the temperature rise caused by these two points is also normal, and under normal cooling conditions, there will be no major problems.

The third reason for the heating of the ultrasonic transducer:

The customer failed to match the transducer and the driving power supply to the best working condition during use. The heat caused by this is very large and uncontrollable, which will have serious consequences. At the same time, when the temperature is high, the mechanical strength of the aluminum material drops sharply. Under the action of high power, cracking is inevitable.