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Comparison and integration of final electromagnetic stirring and thermal soft reduction on continuous casting billet

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Journal of Iron and Steel Research International 2021年第2期28卷 160-167页

作者： Yan-shen Han Wei Yan Jiang-shan Zhang Jun Chen Wei-qing Chen Qing Liu State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Xiangtan Iron&Steel Co. Ltd.of Hunan ValinXiangtan 411101HunanChina

Final electromagnetic stirring(F-EMS)and thermal soft reduction(TSR)are techniques that improve the inner quality of continuous casting billets,but they have rarely been applied *** application effects of F-EMS and TSR were compared,and a process integrating F-EMS and TSR was adopted for a billet continuous caster.A heat transfer model was established to calculate the thermal behavior of 82A tire cord steel *** locations of F-EMS and TSR were determined,followed by conducting a series of plant trials,involving F-EMS alone,TSR alone,and the integrated process of F-EMS and *** results showed that F-EMS or TSR could effectively improve the inner quality of the billet under their respective suitable working ***,F-EMS was found to be more helpful in terms of improving central segregation,while TSR tended to improve V-segregation,central porosity,and *** integration of F-EMS and TSR allowed the advantages of each technique to be utilized,thereby better improving the inner *** all the working conditions,82A steel billet showed optimum inner quality when the current of F-EMS was 240 A and the cooling intensity of TSR was 2.2 m^(3) h^(−1).These findings demonstrate that the integration of F-EMS and TSR is promising for application on continuous casting billets.

关键词： Billet continuous casting Final electromagnetic stirring thermal soft reduction Central segregation Inner quality

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