Effect of vertical electromagnetic stirring on solute distribution in billet continuous casting process

被引:7
作者
Wang, Tao [1 ,2 ,3 ]
Wang, En-gang [1 ,3 ]
Delannoy, Yves [4 ]
Fautrelle, Yves [2 ]
Budenkova, Olga [2 ]
机构
[1] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110004, Liaoning, Peoples R China
[2] Univ Grenoble Alpes, SIMAP, Grenoble INP, CNRS, F-38000 Grenoble, France
[3] Northeastern Univ, Sch Met, Shenyang 110004, Liaoning, Peoples R China
[4] Univ Grenoble Alpes, LEGI, Grenoble INP, CNRS, F-38000 Grenoble, France
基金
国家重点研发计划; 中国国家自然科学基金;
关键词
Vertical electromagnetic stirring; Macrosegregation; Volume averaged method; Continuous casting; NUMERICAL-SIMULATION; MACROSEGREGATION BEHAVIOR; EQUIAXED SOLIDIFICATION; RECTANGULAR STRANDS; LINEAR INDUCTORS; FLOW-FIELDS; PB ALLOY; MODEL; SEGREGATION; DRIVEN;
D O I
10.1007/s42243-021-00685-0
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
A volume averaged columnar solidification model, which couples the flow, temperature and solute concentration fields, is applied to simulate experimental continuous casting cases with and without vertical electromagnetic stirring (V-EMS). The calculated distribution of magnetic induction intensity and final macrosegregation maps are consistent with the experimental results. Calculation results reveal that the V-EMS promotes longitudinal melt flow, accelerates heat dissipation and solidification and finally reduces the central segregation of carbon. However, when V-EMS is applied, the solute distribution becomes asymmetric because the melt flow shows opposite directions between the near and far sides from stirrer. An obvious positive segregation band is observed at about 1/4 width of the billet near the stirrer in both calculated and experimental results. The position and degree of such positive segregation could be affected by installation height of stirrer, as demonstrated by additional simulation cases.
引用
收藏
页码:132 / 143
页数:12
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