About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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Computational Techniques for Multi-Scale Modeling in Advanced Manufacturing
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Presentation Title |
Effect of Nozzle Injection Mode on Initial Transfer Behavior of Round Bloom |
Author(s) |
Pu Wang, liang Li, Datong Zhao, Weidong Liu, Songwei Wang, Haiyan Tang, Jiaquan Zhang |
On-Site Speaker (Planned) |
Pu Wang |
Abstract Scope |
A coupled three-dimensional numerical model combing fluid flow, heat transfer, and solidification has been established to study the effect of two types of nozzle on the internal quality of LZ50 steel in a φ690mm sized continuously cast round bloom. The model is validated by measured data of the strand surface temperature for plant tests. According to the results, As the injection mode changes from the five-port to the six-port nozzle, the superheat degree in the strand center at the mold exit decreases by 9.3 K, which is the resulting increase in the center equiaxed crystal ratio is about 4.3%. A weaker impingement of the outlet flow on the shell has been observed as well, which can be expected to eliminate the popular subsurface white band phenomenon with an even shell thickness in the mold region. This suggests that the six-port nozzle can effectively improve the quality of large round bloom. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Solidification, Iron and Steel |