TC4钛合金电子束冷床炉凝固过程数值模拟研究

Numerical simulation study of solidification process in electron beam cold hearth furnace for TC4 titanium alloy

基于实际生产经验,采用数值模拟技术实现对电子束冷床炉TC4钛合金凝固过程可视化监控和分析。利用ProCAST软件建立三维计算模型,结果表明:铸锭的凝固过程包括凝固开始、非稳态凝固和稳态凝固3个阶段,阐明了不同凝固时间下铸锭的温度分布规律及稳态时的特征。重点研究不同浇注温度和拉锭速率对铸锭熔池深度的影响规律。研究为TC4钛合金铸锭生产工艺的优化提供了有益的指导,可促进大规格TC4钛合金扁锭的高质量生产。

Based on practical production experience,this study utilizes numerical simulation techniques to achieve visual monitoring and analysis of the solidification process of TC4 titanium alloy in an electron beam cold hearth furnace.A three-dimensional computational model is established using ProCAST software.The results indicate that the solidification process of the ingot includes three stages:the beginning of solidification,non-steady-state solidification,and steady-state solidification.It elucidates the temperature distribution patterns of the ingot at different solidification time and characteristics during the steady-state phase.The study focuses on investigating the influence of different pouring temperatures and withdrawal rates on the depth of the ingot’s molten pool.The research provides valuable guidance for optimizing the production process of TC4 titanium alloy ingots,thereby facilitating the high-quality production of large-scale TC4 titanium alloy slabs.