动态轻压下技术在SWRH82B大方坯连铸中的应用  

Application of dynamic soft reduction technology on SWRH82B bloom in continuous casting

作　　者：田新中[1,2] 朱荣[1] 祭程[3] 朱苗勇[3] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]邢台钢铁有限责任公司,河北邢台054027 [3]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《计算机与应用化学》2010年第12期1707-1710,共4页Computers and Applied Chemistry

摘　　要：针对邢钢SWRH82B大方坯连铸生产过程中存在的铸坯中心偏析、中心疏松和中心缩孔等内部质量问题,文章系统地研究了动态轻压下工艺技术,并成功制定了适合于邢钢5号连铸机的轻压下工艺制度及工艺参数。生产实践表明,采用动态轻压下技术能够很好地改善SWRH82B的铸坯内部质量,铸坯中心疏松评级≤1.5级的比例由52.78%增至90.91%;中心缩孔评级≤1.5级的比例由66.67%增至96.36%;铸坯中心碳偏析指数最大值由1.309降至1.086。Dynamic soft reduction technology was introduced to eliminate the central segregation,porosity and pipe in the SWRH82B continuous casting bloom in Xingtai Steel.The key parameters of dynamic soft reduction was systematically analyzed and determined for SWRH82B continuous casting bloom.The production results showed that the ratio of central porosity class and central pipe class ≤1.5 increased from 52.78%,66.67% to 90.91%,96.36% respectively,and centerline segregation index of carbon decreased from 1.309 to 1.086.

关 键 词：大方坯 动态轻压下 内部质量 SWRH82B 

分 类 号：TG246[金属学及工艺—铸造]