改善大方坯内部质量的技术措施  

TECHNOLOGICAL MEASURES OF IMPROVING INNER QUALITY OF BLOOM

作　　者：冯士超[1] 王艳红[1] 丁瑞锋[1] 潘秀兰[1] 

机构地区：[1]鞍钢股份有限公司技术中心,辽宁鞍山114009

出　　处：《冶金丛刊》2014年第1期23-26,30,共5页Metallurgical Collections

摘　　要：介绍了近年来国内外大方坯连铸机的改造和新建情况,分析了大方坯生产中存在的内部质量问题和解决措施;阐述了液芯轻压下和电磁搅拌技术在改善铸坯内部质量方面的应用,重点介绍了新日铁和浦项的凸形辊压下技术、新日铁的旋转移动电磁搅拌和ABB公司的混合型电磁搅拌装置,概述了宝钢和邢钢对轻压下参数设定方法的最新研究,以及住友金属、攀钢和包钢等钢厂铸坯中心偏析和疏松的改善效果;指出了大方坯连铸技术的发展趋势。In this paper , the innovation and newly construction of continuous casters of bloom in China and oversea recently are summed up , the existing questions of inner quality and solutions in the produc-tion of bloom are analyzed;the application of soft reduction and electromagnetic stirring （EMS） in the im-provement of inner quality for bloom are expatiated respectively , reduction technology with convex roll surface profile in Nippon steel and Posco , and revolving movement EMS in Nippon steel and hybrid EMS in ABB Corp are emphasized , new research on the setting methods of soft reduction parameters in Baos-han steel and Xing steel , and the improvement effect of central segregation and porosity for bloom in Sum-itomo Metal, Pan steel and Baotou steel are summarized; the development trend of continuous casting technologies for bloom is pointed out .

关 键 词：大方坯 偏析 疏松 轻压下 电磁搅拌 

分 类 号：TF777.2[冶金工程—钢铁冶金]