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 ›› 2009, Vol. 30 ›› Issue (5): 34-36.

• 工艺技术 • 上一篇    下一篇

结晶器电磁搅拌对60钢铸坯质量的影响

陈伟1,2,苏鹤洲2,蒋泰旭2,施哲1   

  1. 1. 昆明理工大学,昆明 650093;
    2. 武钢集团昆明钢铁股份公司技术中心,昆明 650302;
  • 收稿日期:2009-03-16 出版日期:2009-10-01 发布日期:2022-11-19
  • 作者简介:陈伟(1973-),男,博士研究生,高级工程师,1996年哈尔滨工业大学毕业,炼钢工艺技术研究与新产品研发。

Effect of Mold Electromagnetic Stirring on Quality of 0.60C Steel Casting Billets

Chen Wei1,2 , Su Hezhou2 , Jiang Taixu2 , Shi Zhe1   

  1. 1. Kunming University of Science and Technology,Kunming 650093;
    2. Technology Center,Kunming Iron and Steel Co.Ltd.,Wusteel Group,Kunming 650302;
  • Received:2009-03-16 Published:2009-10-01 Online:2022-11-19

摘要: 对60钢(0.57%~0.62%C)采用结晶器电磁搅拌工艺前后的150 mm×150 mm铸坯质量进行了系统研究,并优化了电磁搅拌工艺。结果表明,采用较强结晶器电磁搅拌强度(250 A)、低过热度(≤250℃)浇铸工艺能显著改善铸坯质量,60钢铸坯中心等轴晶面积比率由平均27.65%增加到52.58%,中心碳偏析指数由1.07降至1.01,铸坯夹杂物含量和尺寸明显减少,钢水中的氧化物夹杂得到有效去除。

关键词: 60钢, 结晶器电磁搅拌, 等轴晶区, 中心碳偏析, 夹杂物

Abstract: The quality of 150 mm ×150 mm casting billet of 0.60C steel(0.57%~0.62%C) with and without M-EMS (mold electromagnetic stirring) has been systematically studied,and the M-EMS process was optimized. Results showed that with stronger M-EMS current intensity (250 A) and lower superheating extant of liquid steel(≤25 ℃)for casting process,the quality of billet was obviously improved,i.e.the average ratio of equiaxed zone at billet centre of 0.60C steel increased to 52.58% from 27.65%,the central carbon segregation index decreased from 1.07 to 1.01,the content and size of inclusions in billet decreased markedly as the oxide inclusions in liquid steel were efficiently removed.

Key words: 0.60C Steel, M-EMS, Equiaxed Zone, Central Carbon Segregation, Inclusions