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VACUUM ›› 2024, Vol. 61 ›› Issue (2): 78-85.doi: 10.13385/j.cnki.vacuum.2024.02.14

• Vacuum Metallurgy and Thermal Engineering • Previous Articles     Next Articles

Development of Water-cooled Copper Crucible for Electron Beam Melting

YAN Chao1,2, ZHANG Tao1,2, JIA Zi-zhao1,2, CHENG Cheng1, ZHAO Guo-hua1   

  1. 1. Research Institute of Physics and Chemistry Engineering of Nuclear Industry, Tianjin 300180, China;
    2. National Key Laboratory of Particle Transport and Separation Technology, Tianjin 300180, China
  • Received:2023-08-10 Online:2024-03-25 Published:2024-03-28

Abstract: As an excellent vacuum smelting technology, the structural design of the water-cooled crucible, the core component of electron beam melting, is particularly important. The crucible cooling performance directly affects the performance and safety of electron beam melting. The influences of crucible water channel structure and melt pool morphology on the cooling capacity of crucibles were investigated through theoretical analysis, numerical simulation, and an experimental assessment. The crucible structure was determined through crucible material selection, melt pool utilization rate analysis, energy loss analysis and cooling calculation. A numerical simulation model was established and used to compare the cooling performance of two types of molten pool crucibles under different loading conditions, and experimental assessment was conducted on crucible with excellent performance. The results show that under different ingot thicknesses, the cooling water temperature and surface temperature of crucible B are lower than those of crucible A in numerical simulation, indicating that the shape of the molten pool and the structure of the water channel in crucible B are more reasonable and have better heat dissipation effects. The experimental assessment shows that the state of crucible B is stable and meets the design requirements.

Key words: water-cooled crucible, waterway design, molten pool morphology, simulation, electron beam melting

CLC Number:  TF136;TF841

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