Influence of SEN configuration on initial solidification in CSP thin slab
ZHANG Jian-jun1, WANG Zi-chao2, LIU Qing3, DOU Kun2
1. Baosteel Central Research Institute (Qingshan),Wuhan 430080, Hubei, China; 2. School of Metallurgy and Environment, Central South University, Changsha 410083,Hunan,China; 3. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Abstract：A three-dimensional mathematical model has been developed for the coupled analysis of fluid flow, heat transfer and solidification in Compact Strip Production(CSP) continuous casting mold by using finite element method. Effects of casting speed and Submerged Entry Nozzle (SEN) area proportion on flow pattern of free surface, temperature distribution on slab surface and the growth of solidifying shell were investigated. The results shows that the level fluctuation of molten steel surface decreases from±10.5 mm to ±4.5 mm with casting speed decreasing from 6 m/min to 4 m/min, and the solidified shell thickness at mold exit increases from 7.1 mm to 9.5 mm. When SEN area proportion increases from 1.56 to 2.00, the level fluctuation decreases from ±9.1 mm to ±7.1 mm, and the shell thickness at mold exit reduces by 0.4 mm.
张剑君, 王子超, 刘青, 窦坤. 水口结构对薄板坯初始凝固行为的影响[J]. 连铸, 2023, 42(1): 82-88.
ZHANG Jian-jun, WANG Zi-chao, LIU Qing, DOU Kun. Influence of SEN configuration on initial solidification in CSP thin slab. CONTINUOUS CASTING, 2023, 42(1): 82-88.
ZHANG L, Aoki J, Thomas B G. Inclusion removal by bubble flotation in a continuous casting mold[J]. Metallurgical and Materials Transactions B, 2006, 37(3):361.
Torres-Alonso E, Morales R D, García-Hernández S, et al. Cyclic turbulent instabilities in a thin slab mold. Part I: Physical model[J]. Metallurgical and Materials Transactions B, 2010, 41(3): 583.
[5]
Honeyands T, Herbertson J. Flow dynamics in thin slab caster moulds[J]. Steel Research, 1995, 66(7): 287.
Nam H, Park H S, Yoon J K. Numerical analysis of fluid flow and heat transfer in the funnel type mold of a thin slab caster[J]. ISIJ International, 2000, 40(9): 886.
LI B, Tsukihashi F. Effects of electromagnetic brake on vortex flows in thin slab continuous casting mold[J]. ISIJ International, 2006, 46(12): 1833.
[14]
Torres-Alonso E, Morales R D, García-Hernández S. Cyclic turbulent instabilities in a thin slab mold. Part II: Mathematical model[J]. Metallurgical and Materials Transactions B, 2010, 41(3): 675.
Lai K Y M, Salcudean M, Tanaka S, et al. Mathematical modeling of flows in large tundish systems in steelmaking[J]. Metallurgical Transactions B, 1986, 17(3): 449.
[18]
WANG Y, ZHANG L. Fluid flow-related transport phenomena in steel slab continuous casting strands under electromagnetic brake[J]. Metallurgical and Materials Transactions B, 2011, 42(6): 1319.
2023, Vol. 42 
