| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop Technology
|
| Presentation Title |
Ultrasonic Melt Treatment in a DC Casting Launder: The Role of Melt Processing Temperature |
| Author(s) |
Christopher Beckwith, Tungky A. S. Subroto, Koulis Pericleous, Georgi Djambazov, Dmitry G. Eskin, Iakovos Tzanakis |
| On-Site Speaker (Planned) |
Christopher Beckwith |
| Abstract Scope |
Ultrasonic melt treatment (UST) using a single sonotrode source in a launder is an efficient way to treat a large-volume melt. One key parameter is the temperature of the melt. Melt temperature affects the acoustic pressure generated by the sonotrode, which ultimately defines the cavitation development as well as the resulting acoustic streaming. Experiments have also shown that temperature affects the final grain size, as well as the intermetallic size and number density. This work presents a numerical model covering acoustic cavitation, flow (including acoustic streaming) and heat transfer in direct-chill (DC) casting, to better understand this process. The UST effectiveness is quantified through the size of the high-pressure acoustic region and the melt residence time and is validated against experimental data. The output of this work is useful for optimizing the selection of process parameters for UST DC casting. |
| Proceedings Inclusion? |
Planned: Light Metals |