凝固端部冲击振动对连铸坯内部质量的影响

IF 1.7 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Ironmaking & Steelmaking Pub Date : 2022-11-06 DOI:10.1080/03019233.2022.2139048

Baozhen Yang, Hui Zhang, Qiang Lu, Ming-lin Wang, Wenbo Zhao, Chang Shen

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引用次数: 1

摘要

振动冲击在距离弯液面9.5米处中心线性液体分数为25%-35%的钢坯外弧侧的应用。结果表明，低频高冲击能量的冲击振动不仅可以将坯料的中心孔隙率从1.532降低到1.169，而且可以压实液芯，提高中心孔隙率，促进熔池的非均匀形核。高频率和低冲击能量不仅可以使混晶区的比例增加约8%，而且可以将中心碳偏析指数从1.08降低到1.04。同时，两种冲击振动使0.95-1.05范围内的中心碳偏析指数的面积比分别从56.32%提高到70.26%和80.17%，使坯料的中心碳分布均匀。

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Effect of solidification end impact vibration on the internal quality of a continuous casting billet

ABSTRACT Application of vibration impact at the outer arc side of a billet with a central linear liquid fraction of 25% -35% at 9.5 m from the meniscus. The results show that the impact vibration with low frequency and high impact energy can not only reduce the central porosity degree of the billet from 1.532 to 1.169, but also compact the liquid core, improve the central porosity and promote the heterogeneous nucleation of the molten pool. High frequency and low impact energy can not only increase the proportion of mixed crystal zone by about 8 %, but also reduce the central carbon segregation index from 1.08 to 1.04. Meanwhile, the two kinds of impact vibrations increase the area ratio of the central carbon segregation index in the range of 0.95-1.05 from 56.32% to 70.26% and 80.17%, respectively, and uniform the central carbon distribution of the billet.

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来源期刊

Ironmaking & Steelmaking 工程技术-冶金工程

CiteScore

3.70

自引率

9.50%

发文量

125

审稿时长

2.9 months

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.