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金属液单电流电磁净化的理论分析

Theoretical analysis on electromagnetic separation of inclusions from molten metal only by current

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【作者】 张邦文任忠鸣钟云波邓康

【Author】 ZHANG Bang wen,REN Zhong ming,ZHONG Yun bo,DENG Kang (Shanghai Enhanced Laboratory of Metallurgy,Shanghai University,Shanghai 200072,China)

【机构】 上海大学上海市钢铁冶金重点实验室上海大学上海市钢铁冶金重点实验室 上海200072上海200072上海200072

【摘要】 系统地考察了直流、交流激励下 ,圆管、矩形管中金属液的磁场分布 ,针对磁场的不均匀性 ,提出了“等效电流密度”的概念 ,解析了电磁净化效率的理论公式 计算表明 ,一般情况下 ,3× 10 6A/m2 电流可以把钢液中 90 %的2 0 μm夹杂和 5 0 %的 10 μm夹杂去除

【Abstract】 The magnetic field induced by applied AC and DC current in round and rectangular pipe used for electromagnetic separation of inclusions from liquid steel was systematically investigated.Then a concept of "equivalent current density" is proposed for evaluating the inhomogeneous electromagnetic pinch force,and removal efficiencies of inclusions are formulized.It is founded that a removal efficiency of 50% for 10 μm inclusion or of 90% for 20 μm inclusion can be achieved under a 3×10 6 A/m 2 applied current density.Furthermore,it shows that there are advantages in using DC over AC and flat pipe over round pipe for the electromagnetic removal of inclusion.

【基金】 上海青年科技启明星计划资助项目 (0 1QE14 0 2 0 )
  • 【文献出处】 包头钢铁学院学报 ,Journal of Baotou University of Iron and Steel Technology , 编辑部邮箱 ,2002年03期
  • 【分类号】TF111
  • 【被引频次】8
  • 【下载频次】144
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