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 ›› 2011, Vol. 32 ›› Issue (6): 34-35.

• 工艺技术 • 上一篇    下一篇

二冷区程式电磁搅拌在包钢板坯连铸机的应用

董珍1, 刘平1, 贾生建2, 韩春鹏1, 姜海龙1   

  1. 包钢1技术中心;
    2薄板坯连铸连轧厂,包头014010
  • 收稿日期:2011-05-25 出版日期:2011-12-01 发布日期:2022-10-18
  • 作者简介:董珍( 1969-),女,硕士,高级工程师,1991年内蒙古科技大学毕业,炼钢工艺研究和新产品开发。 ​

Application of Roll-Type Electromagnetic Stirring in Secondary Cooling Zone of Slab Caster at Baotou Iron and Steel Corp

Dong Zhen1 , Liu Pin1 , Jia Shengjian2, Han Chunpeng1, Jiang Hailong1   

  1. 1 Technical Center;
    2 Thin Slab Continuous Casting and Rolling Plant, Baotou Iron and Steel Corp, Baotou 014010
  • Received:2011-05-25 Published:2011-12-01 Online:2022-10-18

摘要: 叙述辊式二冷区电磁搅拌(400 A,1~16 Hz)在包钢Q345B、Q550D、Q345E钢(200~× (1 200~2 300) mm板坯连铸机上的应用效果。生产实践表明,当连铸工艺相同时,采用电磁搅拌工艺后,板坯的内部质量得到了显著改善,中心等轴晶率由平均9.7%增加到30.3%,中心碳偏析指数由1.17降到1.01, A类中心偏析所占的比率由平均5.1%降到0.6%。

关键词: 二冷区, 辊式电磁搅拌, 板坯连铸, 铸坯内部质量

Abstract: Application effect of roll-type electromagnetic stirring (400 A, 1 ~ 16 Hz) in secondary cooling zone of (200 - 300) mm x (1 200 〜2 300) mm slab caster for steel Q345B, Q550D and Q345E at Baotou Steel is presented. Production practice results show that with same continuous casting process the internal quality of casting slab is improved obviously by using final electromagnetic stirring process, i. e. the average central equiaxial crystal ratio increases to 30. 3% from original 9. 7%, the central carbon segregation index reduces to 1. 01 from 1. 17 and the average A-type central segregation ratio decreases to 0. 6% from 5.1%.