The important reason for the heating of the transducer
In the work of ultrasonic welding equipment, the transducer will cause heat, which may be caused by the following three reasons.
The first is that the workpiece to be welded will be hot, or the raw material parts that have been ultrasonically output will be hot, or after a long time of work, the ultrasonic mold (special tool head) and the ultrasonic mold will be hot, and Heat will be transferred to the transducer.
The second is the output power loss of the transducer itself. Since it is impossible to achieve 100% heat transfer and high efficiency in the whole process of electric welding, it is necessary to transfer part of the damaged heat as heat. When the temperature rises, the main parameters of the transducer will be changed, and the best pairing situation will gradually shift. What's more serious is that excessively high temperature causes the characteristics of the piezoelectric ceramic chip to decrease. That way, the working condition of the transducer becomes worse, the heating rate is faster, and it becomes a kind of malignant circulatory system. Therefore, be sure to show an excellent cooling standard for the transducer, which is generally air-cooled at room temperature. Naturally, strong cold air wind can also be used for cooling. Under normal conditions, the temperature rise of the transducer is all normal. Under all normal cooling standards, it is generally not easy to cause problems.
In the continuous practical operation and application, everyone also observed the third reason, that is, the transducer and LED driver did not reach the optimal operating state during the entire process of the actual operation of the equipment, which caused the heat to be very high. Serious harm that can't be controlled. When the temperature is too high, the impact toughness of aluminum raw materials will be strongly reduced. Under such high power efficiency, it is difficult to avoid the cracks of the transducer. A good product is destroyed due to wrong operation, which increases the cost of customers.
