Vertical centrifugal casting can significantly enhance the filling capability of molten metals, enabling the production of complex thin-walled castings at near-rapid cooling rates. In this study, the melt flow, solidification structures, and defects in 316 L steel cast strips with a geometry of 80 mm × 60 mm × 2.5 mm produced by vertical centrifugal casting were numerically and experimentally analyzed under different rotation speeds. With gradually increasing the rotation speed from 150 r/min to 900 r/min, the simulated results showed the shortest filling time and minimum porosity volume in the cast strip at a rotation speed of 600 r/min. Since a strong turbulent flow was generated by the rotation of the mold cavity during the filling process, experimental results showed that a “non-dendritic” structure was obtained in 316 L cast strip when centrifugal force was involved, whereas the typical dendritic structure was observed in the reference sample without rotation. Most areas of the cast strip exhibited one-dimensional cooling, but three-sided cooling appeared near the side of the cast strip. Moreover, the pores and cracks in the 316 L strips were detected by computed tomography scanning and analyzed with the corresponding numerical simulations. Results indicated the existence of an optimal rotational speed for producing cast strips with minimal casting defects. This study provides a better understanding of the filling and solidification processes of strips produced by vertical centrifugal casting.

立式离心铸造可以显着提高熔融金属的填充能力，能够以近乎快速的冷却速度生产复杂的薄壁铸件。在这项研究中，通过数值和实验分析了垂直离心铸造生产的几何尺寸为 80 mm × 60 mm × 2.5 mm 的 316 L 钢铸带在不同转速下的熔体流动、凝固组织和缺陷。随着转速从 150 r/min 逐渐增加到 900 r/min，模拟结果表明在转速为 600 r/min 时铸带中的充填时间最短，孔隙体积最小。由于在填充过程中模具型腔的旋转产生了强烈的湍流，实验结果表明，当涉及离心力时，在 316 L 铸带中获得“非树枝状”结构，而在没有旋转的参考样品中观察到典型的树枝状结构。铸带的大部分区域呈现一维冷却，但在铸带的侧面附近出现三向冷却。此外，通过计算机断层扫描检测了 316 L 条带中的孔隙和裂纹，并通过相应的数值模拟进行了分析。结果表明存在生产铸造缺陷最少的铸带的最佳转速。本研究有助于更好地了解立式离心铸造生产的钢带的充型和凝固过程。而在没有旋转的参考样品中观察到典型的树枝状结构。铸带的大部分区域呈现一维冷却，但在铸带的侧面附近出现三向冷却。此外，通过计算机断层扫描检测了 316 L 条带中的孔隙和裂纹，并通过相应的数值模拟进行了分析。结果表明存在生产铸造缺陷最少的铸带的最佳转速。本研究有助于更好地了解立式离心铸造生产的钢带的充型和凝固过程。而在没有旋转的参考样品中观察到典型的树枝状结构。铸带的大部分区域呈现一维冷却，但在铸带的侧面附近出现三向冷却。此外，通过计算机断层扫描检测了 316 L 条带中的孔隙和裂纹，并通过相应的数值模拟进行了分析。结果表明存在生产铸造缺陷最少的铸带的最佳转速。本研究有助于更好地了解立式离心铸造生产的钢带的充型和凝固过程。通过计算机断层扫描检测 316 L 条带中的孔隙和裂纹，并通过相应的数值模拟进行分析。结果表明存在生产铸造缺陷最少的铸带的最佳转速。本研究有助于更好地了解立式离心铸造生产的钢带的充型和凝固过程。通过计算机断层扫描检测 316 L 条带中的孔隙和裂纹，并通过相应的数值模拟进行分析。结果表明存在生产铸造缺陷最少的铸带的最佳转速。本研究有助于更好地了解立式离心铸造生产的钢带的充型和凝固过程。