Effects of a moving weir on tundish flow during continuous-casting grade-transition
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- Title
- Effects of a moving weir on tundish flow during continuous-casting grade-transition
- Authors
- Jeon, Soohwan; Lee, Sangseung; Ha, Sanghyun; Kim, Sungjool; You, Donghyun
- Date Issued
- 2021-09
- Publisher
- 대한기계학회
- Abstract
- A moving weir to reduce the time for grade transition is proposed. To investigate benefits of the proposed moving weir, tundish flow subject to various conditions of a moving weir was numerically investigated. First, an optimal travelling path of a horizontally moving weir was determined in a water model. Investigation of various cases shows that the shortest transition time is obtained when new molten steel is injected after the weir returns to its original position after a round-trip. Using this travelling path, the speed of the moving weir was investigated in a real-scale model to determine an optimal speed that stabilizes the surface height while the transition time is minimized. As a result, intermixing of steel with dissimilar grades has been reduced by 14.5 % by using the optimal conditions of the moving weir. Lastly, the performance of vertically moving weirs was assessed by comparing with that of the horizontal counterpart.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/109325
- DOI
- 10.1007/s12206-021-0813-8
- ISSN
- 1738-494X
- Article Type
- Article
- Citation
- Journal of Mechanical Science and Technology, vol. 35, no. 9, page. 4001 - 4009, 2021-09
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