动态轻压下工艺在重轨钢生产中的应用效果分析  

Analysis on Effect of Dynamic Soft Reduction Technique Applied in Production of Heavy Rail Steel

作　　者：史凤武[1] 李峰[1] 樊精彪[2] 

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司炼钢厂,内蒙古包头014010

出　　处：《包钢科技》2009年第S2期41-43,共3页Science & Technology of Baotou Steel

摘　　要：5~#铸机是国产的较先进连铸机,主要用于生产包括高速轨在内的重轨钢。第一台国产动态轻压下设备在包钢2006年底投产的5~#铸机上成功安装。文章对重轨钢等典型钢种进行了轻压下试验研究,经过一年多的试验,结果表明:该轻压下设备在合理的工艺条件下可以显著改善重轨钢的质量,横断面中心碳偏析指数不大于1.04,铸坯纵向中心线的碳偏析指数波动明显减小,中心裂纹不大于1级,中间裂纹为不大于1级,钢轨的轨腰中心条纹明显减轻。No.5 caster is comparatively advanced domestic continuous caster,which is mainly used to produce heavy rail steel including steel for high speed rails.The first domestic dynamic soft-reduction equipment was installed successfully on No.5 caster of Baotou Steel,which was put into operation at the end of 2006.In this paper,it is introduced the experimental study of typical steel like heavy rail steel with soft reduction.By the over-one-year experiment,the result shows that the soft-reduction equipment may improve quality of heavy rail steel obviously with reasonable technology,i.e.index of segregation for carbon in the center of transverse section is not more than 1.04,index of segregation for carbon at longitudinal center line of casting blank fluctuates obviously less,center burst and middle crack are not more than grade one,as well as stripes in centre of rail web lighten obviously.

关 键 词：大方坯连铸 重轨钢 动态轻压下 

分 类 号：TF777.2[冶金工程—钢铁冶金]