Effect of submerged entry nozzle structure on fluid flow in a beam blank continuous casting mould. (2nd January 2021)

• Record Type: Journal Article
• Authors: Cui, Heng; Zhang, Jian-wei; Liu, Jian-hua; Su, Wang; Yan, Jin-bao; Wang, Fu-liang
• Is Part Of: Ironmaking & steelmaking. Volume 48:Number 1(2021)
• Page Start: 116
• Page End: 125
• Publication Date: 2021-01-02
• Subjects: Continuous casting -- beam blank -- fluid flow -- particle image velocimetry -- submerged entry nozzle; Iron industry and trade -- Periodicals; Steel industry and trade -- Periodicals; 669.1
• DOI: 10.1080/03019233.2020.1740870
• Languages: English
• ISSNs: 0301-9233

Abstract

ABSTRACT: Fluid flow is of great importance to the quality of near-net-shape beam blanks. Particle image velocimetry (PIV) was employed to measure the fluid flow inside a full-scale water model for a beam blank continuous casting mould from five sections under the different submerged entry nozzles (SENs) in the present work. The results show that the jet flow under the single-port SEN leads to a too significant impact on the solidifying shell in the region of the flange-centre and the fillets, especially the fillet of the outer arc. The resultant horizontal velocities under the three-port SENs are much larger than those at the single-port SEN and can easily lead to the entrapment of mould slag due to excessive shear force. The four-port SEN with the included angle of 140° and inclination angle of 12° is suitable for promoting uniform growth of the solidifying shell, mould powder melting, and inclusion removal.