| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop Technology
|
| Presentation Title |
Effect of Flow Management on Ultrasonic Melt Processing in a Launder upon DC Casting |
| Author(s) |
Tungky Subroto, Dmitry G. Eskin, Christopher Beckwith, Dan Roberts, Iakovos Tzanakis, Georgi Djambazov, Koulis Pericleous |
| On-Site Speaker (Planned) |
Dmitry G. Eskin |
| Abstract Scope |
A promising strategy to upscale ultrasonic melt treatment (UST) is a strategically-placed flow management system in a direct-chill (DC) casting launder. This aims to improve the melt residence time and acoustic pressure distribution, which ultimately optimizes the treatment efficiency. This work focuses on observing the effect of partitions on acoustic pressure generated by ultrasonic sonotrode and on the resultant grain refinement upon DC casting of an AA6xxx aluminum alloy with Zr additions. Billets were cast in a pilot-scale DC casting facility: cases with and without partitions and with and without UST are compared. The effect of partitions on the ultrasonic melt treatment efficiency is quantified through grain size analysis and acoustic pressure measurements. The experimental results are supported by the output from a 3D numerical model of acoustic pressure and melt flow in the launder. The positive impact of partitions on the grain refinement and acoustic pressure are demonstrated. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Other, Other |