Full-Process Numerical Simulation of Flow, Heat Transfer and Solidification for Hot Stamping Steel Manufactured via Thin Slab Continuous Casting Process

Metallurgical and Materials Transactions B Pub Date : 2024-06-24 DOI:10.1007/s11663-024-03177-0

Jingzhou Lu, Weiming Pan, Wanlin Wang, Kun Dou

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Abstract

Thin slab casting and rolling (TSCR) is a near-net-shape manufacturing process and a key development technology in China's iron and steel industry. This study uses cross-scale calculations to analyze the complete process of thin slab casting. The focus is on simulating and predicting the final solidification structure by adjusting process parameters. The aim is to enable further investigation into material performance and establish a foundation for researching deformation and phase transformation. To achieve this, a coupled model has been developed to simulate the entire thin slab casting process, using hot stamping steel as the research subject. The model encompasses fluid flow, heat transfer, and solidification. The study identifies the optimal combination for flow field, temperature distribution, and equiaxed grain ratio within the specified parameter range at a casting speed of 4.0 m/min and a superheat of 40 °C. The aim of the study is to establish an integrated computational materials engineering (ICME) research system for near-net-shape automotive steel casting processes.

Graphical Abstract

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薄板坯连铸工艺制造热冲压钢的流动、传热和凝固全过程数值模拟

薄板坯连铸连轧（TSCR）是一种近净成形制造工艺，也是中国钢铁工业的关键发展技术。本研究采用跨尺度计算分析薄板坯铸造的全过程。重点是通过调整工艺参数模拟和预测最终凝固结构。目的是进一步研究材料性能，为研究变形和相变奠定基础。为此，我们开发了一个耦合模型来模拟整个薄板坯铸造过程，并以热冲压钢作为研究对象。该模型包括流体流动、传热和凝固。研究确定了在浇铸速度为 4.0 m/min、过热度为 40 °C 的指定参数范围内，流场、温度分布和等轴晶粒比的最佳组合。该研究的目的是为近净成形汽车钢铸造工艺建立一个综合计算材料工程（ICME）研究系统。图表摘要

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Metallurgical and Materials Transactions B

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