Experimental investigation on characteristics of hook in continuously cast slab of low carbon steel

IF 2.5 2区 材料科学
Xiao-hua Wang, Wen-jie Tong, Sen Luo, Ye-lian Zhou, Wei-ling Wang, Miao-yong Zhu
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引用次数: 0

Abstract

During the continuous casting process of low carbon steel, the solidified hook formed in the mold has great effects on the surface quality of the cast slab. Some factory experiments have been conducted to investigate the microscopic characteristics and reveal the influence of process parameters on solidified hooks. The depth of the hooks showed a positive correlation with the deflection angle, length, and oscillation mark (OM) depth, which indicates that the OM depth can serve as an approximate indicator for evaluating the depth of the solidified hooks. On the wide and narrow faces of the cast slab, the depth of the solidified hooks and the temperature distribution in the mold show opposite trends, with lower depths of solidified hooks at positions with higher temperatures. In addition, the influence of process parameters on solidified hooks was analyzed. With the increase in superheat, not only the depth of solidified hooks gradually decreases, but also the ratio of depression-typed marks increases. Increasing casting speed and decreasing immersion depth of the submerged entry nozzle will both lead to a decrease in the depth of the solidified hook.

Abstract Image

低碳钢连铸板坯挂钩特性的实验研究
在低碳钢连铸过程中,结晶器中形成的凝固挂钩对铸坯表面质量有很大影响。为了研究凝固挂钩的微观特征并揭示工艺参数对凝固挂钩的影响,我们进行了一些工厂实验。挂钩深度与偏转角、长度和振痕(OM)深度呈正相关,这表明 OM 深度可作为评估凝固挂钩深度的近似指标。在浇铸板坯的宽面和窄面上,凝固挂钩的深度和模具内的温度分布呈现相反的趋势,温度较高的位置凝固挂钩的深度较低。此外,还分析了工艺参数对凝固挂钩的影响。随着过热度的增加,不仅凝固挂钩的深度逐渐减小,而且凹陷型痕迹的比例也在增加。提高浇铸速度和减小浸没式入口喷嘴的浸入深度都会导致凝固挂钩深度的减小。
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来源期刊
自引率
16.00%
发文量
161
审稿时长
2.8 months
期刊介绍: Publishes critically reviewed original research of archival significance Covers hydrometallurgy, pyrometallurgy, electrometallurgy, transport phenomena, process control, physical chemistry, solidification, mechanical working, solid state reactions, materials processing, and more Includes welding & joining, surface treatment, mathematical modeling, corrosion, wear and abrasion Journal of Iron and Steel Research International publishes original papers and occasional invited reviews on aspects of research and technology in the process metallurgy and metallic materials. Coverage emphasizes the relationships among the processing, structure and properties of metals, including advanced steel materials, superalloy, intermetallics, metallic functional materials, powder metallurgy, structural titanium alloy, composite steel materials, high entropy alloy, amorphous alloys, metallic nanomaterials, etc..
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