Xin Li, Yang Liu, Hucheng Zhang, Di Guobiao, C. Ji, Haibo Li, Jingang Liu, Mengyun Zhang
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引用次数: 0
Abstract
ABSTRACT Hot delivery and charging techniques can significantly reduce energy consumption, carbon emissions, and the production cycle of products. The defect-free slab is the precondition of this techniques. Herein, the morphological characteristics of the longitudinal cracks were described in detail. The actual phase transition process and solidification shrinkage behavior were analyzed considering the effect of alloy elements. Due to the unreasonable submerged entry nozzle (SEN) structure, the vertical heat transfer is not optimal around the meniscus. When the gap cannot be filled with sufficient liquid slag, an air gap is easily formed between the solidified shell and the mould plates. The effect of uneven solidification and stress concentration on the crack formation will be enlarged by the air gap. A novel SEN with a reasonable structure can significantly improve the thickness of the liquid slag layer and solidification uniformity, and decrease the crack sensitivity of the steel.
期刊介绍：
Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.
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