Abstract
Ultrasonic vibration was introduced into calcium ferrite (CF) melt in order to develop a new sintering process. Based on the acoustic refraction and reflection principles, ultrasonic propagation between amplitude transformer and CF melt has been analyzed and discussed. In addition, numerical simulation of ultrasonic propagation in CF melt has also been carried out using finite element method. The distribution of acoustic pressure in CF melt were obtained, and the effects of ultrasonic power and frequency on acoustic pressure distribution were also investigated. The results show that increasing ultrasonic power promotes the acoustic pressure amplitude in the CF melt, while increasing frequency decrease the acoustic pressure amplitude. The acoustic pressure amplitude with the frequency closer to the resonant frequency may get the best cavitation effect because its average acoustic pressure is greater than those of others.
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