Research on flow, heat transfer, and solidification characteristics of flow distribution process in the twin-roll casting

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2024-06-14 DOI:10.1016/j.ijthermalsci.2024.109215

Yansheng Zhang, Zhenlei Li, Yang Tang, Guo Yuan

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Abstract

Twin-roll casting (TRC) has seen a significant interest in recent years due to its short process, low energy consumption, and low emission. The research included both numerical simulation and experimental validation to examine the flow and temperature field distribution of the TRC process. The “U-shaped” buffer groove is identified as beneficial for maintaining a stable liquid level distribution in the molten pool through comparison with various flow distributor structures. The solidified billet shell dispersion around the casting roller in the molten pool is observed to undergo three distinct stages: stable growth, thickness fluctuation, and rapid growth. The inclusion of two circular side outlets, each with a diameter ranging from 8 to 10 mm, proves advantageous in maintaining a stable distribution of the liquid level within the molten pool. The edge outlet size ranges from 7 to 9 mm, and ensuring a U-shaped buffer groove width/flow distribution of 1.25–1.58 aids in enhancing casting stability.

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双辊铸造流分布过程中的流动、传热和凝固特性研究

近年来，双辊铸造（TRC）因其工艺流程短、能耗低、排放少而备受关注。研究包括数值模拟和实验验证，以检验 TRC 工艺的流场和温度场分布。通过与各种流动分布器结构的比较，发现 "U 形 "缓冲槽有利于保持熔池中稳定的液面分布。据观察，熔池中浇铸辊周围的凝固坯壳分散经历了三个不同阶段：稳定增长、厚度波动和快速增长。事实证明，包含两个圆形侧出口（每个直径为 8 至 10 毫米）有利于保持熔池内液面的稳定分布。边缘出口尺寸为 7 至 9 毫米，确保 U 形缓冲槽宽度/流量分布为 1.25 至 1.58，有助于提高铸件的稳定性。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.

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