结晶器电磁搅拌对60钢铸坯质量的影响  

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

作　　者：陈伟[1,2] 苏鹤洲[2] 蒋泰旭[2] 施哲[1] 

机构地区：[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

出　　处：《特殊钢》2009年第5期34-36,共3页Special Steel

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。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.

关 键 词：60钢 结晶器电磁搅拌 等轴晶区 中心碳偏析 夹杂物 

分 类 号：TF777[冶金工程—钢铁冶金] TS103.821[轻工技术与工程—纺织工程]