摘 要：平面流铸技术的出现为非晶带材中宽带的制取提供了可能，而位于喷嘴和铜辊表面之间熔潭的状态则决定了带材的性能和质量。通过对熔潭初始形成过程的数值模拟，详细分析了熔潭外形尺寸的变化及其内部温度场、速度场随时间的分布，进而推算出熔体的冷却速率这一制带关键参数。实验结果表明：在非晶带材的制取过程中，周围气体及熔潭内部出现的回流会影响到温度的表现，并计算出熔体的平均冷却速率为 2.1×106 K/s，对比已有的实验结论，验证了该数值模拟的可靠性。
关键词：平面流铸；熔潭；温度场；速度场；冷却速率
DOI:10.19850/j.cnki.2096-4706.2021.09.011
中图分类号：TG249；TG244+.3 文献标识码：A 文章编号：2096-4706（2021）09-0038-04
Numerical Simulation of Molten Pool Characteristics in Amorphous Strip Formation Process
ZHANG Feiran，CHENG Zhouji，PAN Yongjun
（Wuhan Second Ship Design and Research Institute，Wuhan 430064，China）
Abstract：The appearance of planar flow casting technology makes it possible to produce wide strip in amorphous strip，and the state of molten pool between nozzle and copper roller surface determines the performance and quality of the strip. Through the numerical simulation of the initial formation process of the molten pool，the change of the overall size of the molten pool and the distribution of its internal temperature field and velocity field with time are analyzed in detail，and then the key parameter of strip making，the cooling rate of the melt material，is calculated. The experimental results show that during the production of amorphous strip，the reflux coming from surrounding gas and the internal molten pool will affect the temperature performance，and the average cooling rate of melt material is calculated to be 2.1×106 K/s，compared with the existing experimental conclusions，the reliability of the numerical simulation is verified.
Keywords：planar flow casting；molten pool；temperature field；velocity field；cooling rate
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作者简介：张斐然（1991—），男，汉族，河北衡水人，工程 师，硕士，研究方向：船舶系统。