In this paper, a spiral magnetic field electromagnetic stirrer, which can separately induce two different magnetic fields ,is introduced. The corresponding central magnetic flux curves of the stirrer were measured by ...In this paper, a spiral magnetic field electromagnetic stirrer, which can separately induce two different magnetic fields ,is introduced. The corresponding central magnetic flux curves of the stirrer were measured by two different probes of the Tesla meter. Meanwhile, the mentioned spiral magnetic field electromagnetic stirrer was used, the effect of the two different magnetic fields on solidification of Sn-I 1% Sb binary alloy was studied,and the segregations and metallographic structures of the ingot samples were analyzed. The research results show that, with the same electromagnetic stirring parameters,the spiral magnetic field electromagnetic stirring is more effective in reducing the composition difference between the upper and lower parts of the ingot. The microstructure photos show that the grain size was more refined.展开更多
锌渣是带钢热镀锌工序的必然产物,锌渣清理一直是国内外镀锌领域的难题。针对锌锅内锌液表面锌渣的分布特点,提出了一种在锌锅锌液上方加载行波电磁场以驱动锌液有序流动,进而拖动锌渣跟随流动以改变其分布的新方法,称为热镀锌锌锅电磁...锌渣是带钢热镀锌工序的必然产物,锌渣清理一直是国内外镀锌领域的难题。针对锌锅内锌液表面锌渣的分布特点,提出了一种在锌锅锌液上方加载行波电磁场以驱动锌液有序流动,进而拖动锌渣跟随流动以改变其分布的新方法,称为热镀锌锌锅电磁驱渣法(CGL-EMD:electromagnetic driving dross for continuous hot dip galvanizing line)。通过电磁场和流场顺序耦合模拟,研究了EMD不同布局及电磁特性参数对锌液流场的影响。结果表明:EMD可有效促进锌锅表层锌液沿壁面的切向流动,最大切向流速可达0.8 m/s以上;锌液切向流速随加载磁场力的增大而增大,而受加载时间的影响较小,且给出了EMD对深度方向的锌液流动影响规律。最后,讨论了EMD与捞渣机器人耦合清渣路径和驱-扒-捞清渣工艺,并介绍了EMD系统在中国宝武集团的应用实践和生产实效。展开更多
文摘In this paper, a spiral magnetic field electromagnetic stirrer, which can separately induce two different magnetic fields ,is introduced. The corresponding central magnetic flux curves of the stirrer were measured by two different probes of the Tesla meter. Meanwhile, the mentioned spiral magnetic field electromagnetic stirrer was used, the effect of the two different magnetic fields on solidification of Sn-I 1% Sb binary alloy was studied,and the segregations and metallographic structures of the ingot samples were analyzed. The research results show that, with the same electromagnetic stirring parameters,the spiral magnetic field electromagnetic stirring is more effective in reducing the composition difference between the upper and lower parts of the ingot. The microstructure photos show that the grain size was more refined.
文摘锌渣是带钢热镀锌工序的必然产物,锌渣清理一直是国内外镀锌领域的难题。针对锌锅内锌液表面锌渣的分布特点,提出了一种在锌锅锌液上方加载行波电磁场以驱动锌液有序流动,进而拖动锌渣跟随流动以改变其分布的新方法,称为热镀锌锌锅电磁驱渣法(CGL-EMD:electromagnetic driving dross for continuous hot dip galvanizing line)。通过电磁场和流场顺序耦合模拟,研究了EMD不同布局及电磁特性参数对锌液流场的影响。结果表明:EMD可有效促进锌锅表层锌液沿壁面的切向流动,最大切向流速可达0.8 m/s以上;锌液切向流速随加载磁场力的增大而增大,而受加载时间的影响较小,且给出了EMD对深度方向的锌液流动影响规律。最后,讨论了EMD与捞渣机器人耦合清渣路径和驱-扒-捞清渣工艺,并介绍了EMD系统在中国宝武集团的应用实践和生产实效。
