大圆坯连铸结晶器内电磁场分布特性的实验研究  

A Study on Distribution Characteristics of Electromagnetic Field in Concasting Mould for Round Bloom

作　　者：郭上型[1] 王建军[1] 周俐[1] 李卫国[1] 施晓芳[1] 孙维[2] 汪开忠[2] 

机构地区：[1]安徽工业大学冶金和资源学院,马鞍山243002 [2]马鞍山钢铁股份有限公司,马鞍山243000

出　　处：《特殊钢》2005年第6期5-7,共3页Special Steel

基　　金：国家高技术研究发展专项经费资助项目(2003AA4331160)

摘　　要：在马钢工业生产条件下,用高斯计空载测量Φ380 mm圆坯连铸结晶器内在电流参数400～510 A、2.0～2.5 Hz的范围内磁感应强度的分布特性.结果表明,结晶器中心垂直方向磁感应强度变化曲线呈波峰状,在离结晶器上口约530 mm的电磁搅拌器中心处有最大值;在结晶器水平截面上磁感应强度沿截面中心至边缘逐渐增大.钢液弯月面处的磁感应强度是结晶器中心最大值的10%左右.马钢在现有生产条件下采用400 A/2.5 Hz的电流参数,相应电磁搅拌强度明显偏低.In condition of commercial production at Maanshan Steel, with electric current parameter within limits 400 ～ 510 A and 2.0 ～2.5 Hz, the distribution characteristics of magnetic induction intensity in concasting mould with M-EMS for Φ380 mm round bloom has been measured by using Gauss-meter. The results showed that the curve of magnetic induction intensity along vemcal direction of mould center had a peak shape and the maximum value was at M-EMS stirrer center and a distance 530 mm from top of mould; and it increased gradually from center to edge at mould horizontal section. The magnetic induction intensity at meniscus was about 10% of that maximum value at mould middle section. The analysis shows that in the present production conditions at Maanshan Steel the stirring intensity with using electric current parameter 400A/2.5Hz is not enough.

关 键 词：圆坯 连铸 结晶器 电磁搅拌 磁感应强度 连铸结晶器 分布特性 电磁场 实验 生产条件 

分 类 号：TF777[冶金工程—钢铁冶金]