The ultrasonic welding transducer belongs to the high-power ultrasonic transducer. Equipped with the energy-collecting booster and work head, it can generate ultrasonic vibration, which has a high-frequency hot melting effect on the gap surface of the being pressed plastic parts, so as to achieve the purpose of welding. *Features The ultrasonic transducer for welding produced by our company has the features as follows: A. low resonance impedance B. high Q mechanical value C. high efficiency of mechanical and electrical transforming D. low calorific capacity E. large amplitude and high vibration speed.