A hollow exponential ultrasonic horn for aluminum melt degassing under power ultrasound and rotating flow field

Wang, Ao; Gao, Guanjun; Li, Dayong; Lu, Decai; Wang, Ming; Shi, Daming; Xu, Zhoumei

doi:10.1016/j.rinp.2021.103822

Cited by 8 publications

(2 citation statements)

References 30 publications

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“…Figure 4 shows the structural schematic of the stepped ultrasonic horn. When the simple harmonic vibration was applied on the stepped ultrasonic horn, the longitudinal wave vibration equation at the variable cross-section can be described as follows [31,40]:…”

Section: Ultrasonic Horn Designmentioning

confidence: 99%

“…where K was the circular wavenumber, 𝐾 = 𝜔 𝑐 ⁄ ; 𝜔 is the ultrasonic circular frequency, rad/s; 𝑐 was the longitudinal wave propagation velocity, 𝑐 = 𝐸 𝜌 ⁄ , 𝐸 and 𝜌 were the young's modulus and density of the ultrasonic horn material; 𝜉 was the displacement When the simple harmonic vibration was applied on the stepped ultrasonic horn, the longitudinal wave vibration equation at the variable cross-section can be described as follows [31,40]:…”

Section: Ultrasonic Horn Designmentioning

confidence: 99%

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Design and Development of a Novel Ultrasonic Field Wetting Angle Measuring Instrument for Researching the Wetting of the Liquid–Solid Interface

et al. 2021

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A key technical problem in the preparation of Al-Ti-C grain refiner and other composite materials is the poor wetting of the Al-C interface, which greatly restricts the development of the preparation technology of related composite materials. In view of this scientific challenge, a novel ultrasonic field wetting angle measuring instrument has been designed to research the wetting behavior of the liquid–solid interface and ensure that preparation conditions are optimized. The dimensional parameters of the ultrasonic transducer and the horn in the novel ultrasonic wetting angle measuring instrument have been designed by theoretical calculation, and the modal analysis was performed for the ultrasonic horn using the functions of displacement and time. Modal analysis was utilized to optimize the dimension of the ultrasonic horn, and the natural frequency of the longitudinal vibration of the horn was reduced from 22,130 Hz to 22,013 Hz, resulting in an error rate between the actual value (22,013 Hz) and the design value (20 kHz) of less than 1%. In addition, the influence of different transition arc radiuses on the maximum stress of the optimized ultrasonic horn was analyzed.

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Section: Ultrasonic Horn Designmentioning

confidence: 99%

Section: Ultrasonic Horn Designmentioning

confidence: 99%