内置式结晶器电磁搅拌对60钢小方坯夹杂物的影响  

Effect of Interior Mould Electromagnetic Stirring on Inclusions of 60 Steel Billet

作　　者：钟凌鹏[1] 张桂芳[1] 施哲[1] 蒋泰旭[2] 

机构地区：[1]昆明理工大学材料与冶金工程学院,云南昆明650093 [2]武钢集团昆明钢铁股份有限公司,云南昆明650302

出　　处：《铸造技术》2010年第1期31-35,共5页Foundry Technology

基　　金：云南省中青年学术技术带头人后备人才基金(2006PY01-05)

摘　　要：为了60钢小方坯中夹杂物,采用电磁搅拌电流为0、150 A、250 A,频率为3 Hz工艺参数,进行非金属夹杂物出现频率对比和夹杂物的能谱分析比较。结果表明,采用内置式结晶器电磁搅拌后,60钢夹杂物得到了控制。随着搅拌强度增加,60钢中的夹杂物≥1.0级的基本消除,夹杂物≥0.5级的由原来的33.33%下降到8.47%。在浇注过程中随钢流带入的非金属夹杂物,如脱氧产物、耐火材料的冲刷、水口结瘤的冲刷等,经电磁搅拌后大部分可以被排出,证明电磁搅拌消失夹杂物效果明显。The effect of difference electromagnetic stirring intensity on inclusions of 60 steel billet was analyzed. Stirring technical parameters, with the current of 0 A, 150 A and 250 A, and the frequency of 3 Hz, were adopted in the experiment. And the occurrence frequency of non-metallic inclusions and the energy spectrum of the inclusion were investigated. The results showed that the inclusions of 60 steel billet can be improved by interior M-EMS, and, with increasing the current intensity of M-EMS, the inclusions of 60 steel billet was reduced. The grade of the non-metallic inclusions, larger or equal to 1.0, was removed, and the grade of the non-metallic inclusions ≥0.5 decreased from 33.33% to 8.47%. The non-metallic inclusions brought into molten steel, i.e., deoxidization product, the inclusions washed by the refractories,the inclusions brought by the wash of nozzle clogging, could be almost removed by M-EMS.

关 键 词：内置式结晶器 电磁搅拌 夹杂物 60钢小方坯 

分 类 号：TF777[冶金工程—钢铁冶金]