Analysis of Several Heating Situations of Transducers

The transducer generates heat during use, which is mainly caused by three reasons.

1. The heat generated by the welded workpiece or the material treated with ultrasonic waves, or the mold (tool head) and amplitude rod working for a long time, will be transferred to the transducer.

2. It is the power loss of the transducer itself. Since we cannot achieve 100% energy conversion efficiency, the lost energy will inevitably be converted into heat. Temperature rise can cause changes in the parameters of the transducer, gradually deviating from the optimal matching state, and more seriously, temperature rise can lead to degradation of the performance of piezoelectric ceramic chips. This in turn leads to a worse working condition of the transducer, faster heating up, which is a vicious cycle. So we must provide the transducer with good cooling conditions, usually room temperature air cooling; If necessary, cold air cooling can also be used. Under normal circumstances, the temperature rise caused by these two points is also normal, and there will be no major issues under normal cooling conditions.

3. The customer failed to match the transducer with the driving power supply to the optimal working state during use, which caused significant and uncontrollable heating and could have serious consequences. At the same time, as the temperature increases, the mechanical strength of aluminum material decreases sharply, and cracking is inevitable under high power. It's a pity that something that is clearly good was damaged due to improper use. So, we hope that customers can improve their application technology level.