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Design Improvement of Four-Strand Continuous-Casting Tundish Using Physical and Numerical Simulation
Quanhui Li1,2, Bangming Qin1, Jiangshan Zhang1,2
1State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China.
Materials (Basel, Switzerland)
|January 21, 2023
Summary
Optimizing continuous casting tundish flow patterns is crucial for metallurgical performance. This study enhanced flow characteristics using modified walls and a new ladle shroud, significantly reducing dead volume and improving steel quality.
Area of Science:
- Materials Science
- Metallurgical Engineering
- Fluid Dynamics
Background:
- Tundish flow patterns critically impact continuous casting metallurgical performance.
- Optimizing flow dynamics is essential for efficient steel production and quality.
Purpose of the Study:
- To design and optimize flow characteristics within a four-strand continuous casting tundish.
- To investigate and improve molten steel flow behavior for enhanced metallurgical outcomes.
Main Methods:
- Utilized validated numerical simulations and water model experiments.
- Evaluated the effect of varying flow rates in the original tundish design.
- Implemented modified retaining walls, a new ladle shroud, and a diversion hole for optimization.
Main Results:
- Increased flow rate from 3.8 to 6.2 L/min reduced dead volume from 36.47% to 17.59%.
- Modified walls significantly improved dead volume and outlet consistency.
- Diversion hole design enhanced plug volume from 6.39% to 13.44% by creating upstream circular flow.
- New trumpet ladle shroud increased response time to 167.5 s and reduced turbulence.
Conclusions:
- Optimized tundish design, including modified walls and a new ladle shroud, significantly improves flow characteristics.
- Enhanced flow control leads to reduced dead volume, better outlet consistency, and improved clean steel production.
- The study demonstrates effective strategies for optimizing tundish performance in continuous casting processes.
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