【摘要】 冷坩埚真空悬浮熔炼技术是目前最为先进的金属冶炼技术,被广泛应用于钛合金、镁铝合金和高温合金的熔炼,感应线圈作为冷坩埚真空悬浮技术的关键零件,其合理性对冷坩埚的能量利用率起到关键作用。为了有效分析冷坩埚能量利用率的问题,应用Maxwell 3D软件对冷坩埚真空悬浮熔炼的感应线圈做三维电磁场强度对比和金属涡流损耗的仿真模拟,分析不同高度感应线圈对磁场大小的影响,以及对能量利用率的影响。结果表明,线圈磁场强度与能量利用率随着线圈高度的增大而减小,所以在同等条件下应采用高度小的感应线圈。更多还原

【Abstract】 Vacuum cold crucible levitation melting of alloys,including Ti-,Mg Al-and refractory metals alloys,was mathematically modeled and numerically simulated with Maxwell 3D software. The influence of the properties of inductive magnetic field on the energy utilization ratio and eddy current loss was investigated. The simulated results show that the height of the induction coil has a major impact. To be specific,since the eddy current is responsible for melting of the cylindrical alloy block,as the height of the induction coil increases,the magnetic field intensity,the energy utilization ratio and the eddy current loss decrease. When it comes to vacuum cold crucible levitation melting of alloys and/or metals,we suggest that the shortest possible height of the induction-coil may result in the optimized energy utilization ratio.更多还原