Quanhui Li, Qing Liu, Qiangqiang Wang, Shengping He, Xinping Mao
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引用次数: 0
Abstract
Controlling the flow activity at the meniscus in the mold during the continuous casting of ultrathick slab is challenging due to the complex flow behavior, which is not extensively documented. Herein, a multiphase transient model of the ultrathick slab mold has been developed to describe the flow of molten steel, velocity distribution, and stream pattern at different submerged entry nozzle (SEN) outlets. The position of impact points and the fluctuation of liquid level are discussed as well. After ejecting from the port, the stream of the S-shaped SEN splits into upper and lower streams. The upper stream moves to the liquid level, which improves the liquid level activity near the SEN. However, the reduced mainstream momentum alleviates the occurrence of slag layer exposure. Industrial application of the S-shaped SEN results in uniform slag distribution and smooth casting operations.
在超厚板坯连铸过程中，控制结晶器内半月板处的流动活动具有挑战性，因为流动行为非常复杂，而且没有广泛的记录。在此，我们建立了超厚板坯结晶器的多相瞬态模型，以描述钢水的流动、速度分布以及不同浸没式入口喷嘴（SEN）出口处的流型。此外，还讨论了冲击点的位置和液面的波动。S 形 SEN 喷射流从喷嘴喷出后，分成上下两股。上层流向液面移动，从而改善了 SEN 附近的液面活动。然而，主流动量的减少会减轻渣层暴露的情况。S 型 SEN 的工业应用可实现均匀的熔渣分布和平稳的铸造操作。
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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