ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2008, Vol. 29 ›› Issue (1): 51-53.

• 工艺技术 • 上一篇    下一篇

280 mm×380 mm连铸坯结晶器电磁搅拌技术的应用

陈永1,2, 朱苗勇1   

  1. 1 东北大学材料与冶金学院,沈阳110004;
    2攀枝花钢铁研究院材料研究所,攀枝花617000
  • 收稿日期:2007-07-23 出版日期:2008-02-01 发布日期:2022-12-15
  • 作者简介:陈 永(1969-),男,教授级高级工程师,博士生,1990年东北大学毕业,连铸工艺和铸坯质量控制。

Application of Mold Electromagnetic Stirring Technology for 280 mm×380 mm Concasting Bloom

Chen  Yong1,2, Zhu  Miaoyong1   

  1. 1 School of Materials and Metallurgy,Northeastem University,Shenyang 110004;
    2 Dept of Materials Rescarch,Panzhihua lron and Steel Research Institute,Panzhihua 617000
  • Received:2007-07-23 Published:2008-02-01 Online:2022-12-15

摘要: 试验研究了电磁搅拌的电流(150~500 A)对重轨钢U75V等钢种(mm)280×380、280×325连铸坯冶金质量的影响。结果表明,当电流由250A提高至500A时,重轨钢U75V铸坯中心区等轴晶率由18.8%增至36.2%,夹杂总量由8.53mg/10kg降至4.68mg/10kg,中心疏松、偏析、缩孔、中心裂纹和中间裂纹等缺陷≤1.0级别的比例达98%。中碳钢连铸电磁搅拌电流为350~400A,低碳钢连铸电磁搅拌电流为250A时,铸坯内部缺陷≤1.0级的比例分别为93%和90%。

关键词: 方坯, 连铸,  , 电磁搅拌,  , 冶金质量

Abstract: The effect of current(150~500 A)of mold electromagnetic stiring(M-EMS)technology on metallurgy quality of 280 mm×380 mm,280 mm×325 nm concasting bloom of heavy rail steel U75V etc grade has been tested and studied. Results showed that with the current increasing from 250 A to 500 A,the percentage of equiaxed zone increased from 18.8% to36.2%,the total inclusion amount decreased from8.53 mg/10kg to4.68 mg/10kg and the percentage of ratting units ≤1.0 of defects centre porosity,segregation,shrinkage cavity,centre cracks and midway cracks was up to 98%.As concasting stiring current was 350~400 A for medium carbon steels and concasting stiring current was 250 A for low carbon steels,the percentage of ratting units ≤1.0 of casting bloom intemal defects was respectively up to93% and 90%.