Inclusion Particles Capture in Slab Continuous Casting Mold Under Composite Magnetic Fields

doi:10.12068/j.issn.1005-3026.2026.20240132

Abstract

Abstract:

In this paper， a mathematical model for predicting the flow and solidification of the mold under the control of the composite electromagnetic field of electromagnetic stirring and electromagnetic braking was established to address issues related to solidification homogeneity and surface defect control in continuous casting slabs. The wall-adapting local eddy-viscosity （WALE） large eddy simulation model， in conjunction with a simplified inclusion capture criterion， was employed to analyze the mechanism by which the composite electromagnetic field controlled surface defects in the cast slabs. The findings reveal that the capture locations of inclusions are mainly concentrated in the outer surface layer of the slabs； the difference between the thickness of the solidified shell in the wide and narrow surface under the composite magnetic field is reduced by 4.59% compared with that without electromagnetic field， and the total amount of inclusion capture under the composite magnetic field is reduced by 47.21% compared with that without electromagnetic field. It is found that electromagnetic braking inhibits the inclusion capture in the solidified shell， and the core role of electromagnetic stirring is to promote the flow and solidification homogeneity.

Key words: inclusion, electromagnetic braking, electromagnetic stirring, solidification homogeneity, continuous casting mold

CLC Number:

TF 777.1

Ping CAO, Chang-jun WANG, Bao-kuan LI, Zheng-jie FAN. Inclusion Particles Capture in Slab Continuous Casting Mold Under Composite Magnetic Fields[J]. Journal of Northeastern University(Natural Science), 2026, 47(1): 138-144.

Figures/Tables 11

References 22

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物性参数	数值
密度/(kg·m^-3)	7 100
比热容/(J·kg^-1·K^-1)	710
热导率/(W·m^-1·K^-1)	43
黏度/(kg·m^-1·s^-1)	0.004 71
相变潜热/(J·kg^-1)	270 000
电导率/(S·m^-1)	714 000
固相线温度/K	1 760
液相线温度/K	1 787

物性参数	数值
密度/(kg·m^-3)	7 100
比热容/(J·kg^-1·K^-1)	710
热导率/(W·m^-1·K^-1)	43
黏度/(kg·m^-1·s^-1)	0.004 71
相变潜热/(J·kg^-1)	270 000
电导率/(S·m^-1)	714 000
固相线温度/K	1 760
液相线温度/K	1 787

参数	数值
结晶器尺寸/mm	1 450×250
结晶器工作高度/mm	800
结晶器延伸高度/mm	2 500
浸入式水口内径/mm	80
浸入式水口外径/mm	130
浸入式水口浸入深度/mm	211.5
浸入式水口出口尺寸/mm	80×65
浸入式水口倾角/（°）	-15
通钢量/(t·min^-1)	4
吹氩量/(L·min^-1)	10
结晶器宽面单面冷却水流量/(m³·min^-1)	2.8
结晶器窄面单面冷却水流量/(m³·min^-1)	0.46
电磁搅拌频率/Hz	4.5
电磁搅拌电流强度/A	600
电磁制动电流强度/A	500
电磁搅拌线圈匝数/匝	20
电磁制动线圈匝数/匝	100

参数	数值
结晶器尺寸/mm	1 450×250
结晶器工作高度/mm	800
结晶器延伸高度/mm	2 500
浸入式水口内径/mm	80
浸入式水口外径/mm	130
浸入式水口浸入深度/mm	211.5
浸入式水口出口尺寸/mm	80×65
浸入式水口倾角/（°）	-15
通钢量/(t·min^-1)	4
吹氩量/(L·min^-1)	10
结晶器宽面单面冷却水流量/(m³·min^-1)	2.8
结晶器窄面单面冷却水流量/(m³·min^-1)	0.46
电磁搅拌频率/Hz	4.5
电磁搅拌电流强度/A	600
电磁制动电流强度/A	500
电磁搅拌线圈匝数/匝	20
电磁制动线圈匝数/匝	100

条件	宽面出口凝固壳厚度	窄面出口凝固壳厚度	宽与窄面厚度差值
无磁场	37.77	27.97	9.80
电磁制动	37.97	28.28	9.69
电磁搅拌	37.01	27.67	9.34
复合磁场	37.50	28.15	9.35