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真空炉温度场模拟研究

Advances in Temperature Field Simulation of Vacuum Furnaces

  • 摘要: 真空炉温度均匀性是影响工件的应力和微观结构的关键,温度场模拟则是研究炉内温度均匀性的重要手段。本文首先梳理了不同温度场的测量方法,综述了常见网格划分方法及适用场景,对比了常用辐射模型及其特点,总结了影响炉内温度场的因素。未来真空炉研究应致力于:1)通过多物理场耦合模拟与实验结合,构建“结构—温度场—工件性能”一体化设计数据库;2)结合温度场模拟与神经网络算法,实现温度实时预测与智能化控制;3)对真空炉进行模块化设计,通过优化加热模块布局和温度监测控制模块精度,提高真空炉的温度均匀性。

     

    Abstract: Temperature field simulation is a key method for studying the temperature uniformity in a vacuum furnace, which significantly influences the stress and microstructure of workpieces. In this paper, we first review the methods of temperature measurement, and then summarize the usual finite element meshing and their applicable scenarios. A comparison of commonly used radiation models and their characteristics is conducted, summarizing the factors that influence the temperature field of the furnace. In future studies, more efforts should be focused on the following aspects: 1) Multiphysics coupling simulation and experiments are adopted to construct an integrated design database of ‘structure-temperature field-workpiece performance’. 2) The combination of the temperature field simulation and the neural network algorithm is implemented to achieve real-time temperature prediction and intelligent optimization. 3) To improve temperature uniformity, the modular approach should be adopted in the design of vacuum furnaces by optimizing the layout of the heating modules and enhancing the precision of the temperature monitoring/controlling modules.

     

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