武钢板坯连铸凝固规律的研究  

Solidification regularity of slab continuous casting in Wuhan Iron and Steel Corporation

作　　者：陈光友[1] 倪红卫[1] 张华[1] 罗传清[1,2] 刘光明[2] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]武汉钢铁集团公司第二炼钢厂,湖北武汉430083

出　　处：《武汉科技大学学报》2008年第6期605-608,共4页Journal of Wuhan University of Science and Technology

基　　金：教育部博士点基金资助项目(20050488001);湖北省教育厅科研基金资助项目(2004Z001)

摘　　要：结合武汉钢铁（集团）公司第二炼钢厂板坯连铸机实际生产情况，采用射钉法测量了不同钢种在二冷区内的凝固坯壳厚度。结果表明，铸坯宽度方向液相穴形状呈W形，1／4处凝固坯壳最薄；综合凝固系数控制在22．38-25．43mm／min^1/2，铸坯液芯长度为20．88-22．35m，铸坯凝固末端位于二冷段八区；钢种、拉速和冷却制度等因素对板坯凝固过程有影响。In light of the production situation of slab continuous caster in No. 2 Steelmaking Plant of Wuhan Iron and Steel Corporation, the thickness of solidified slab shell of different steel grades in secondary cooling was measured by pin-shooting technique. The results show that the liquid core along the width of the slab looks like W in shape and the shell at the quarter of the width edge is the thinnest. By controlling comprehensive solidification coefficient in 22.38 - 25.43 mm/min^1/2, the liquid core length is between 20.88 m and 22.35 m and the final stage of solidification is in the eighth section of the secondary cooling. The steel grade, pulling speed, cooling system and other factors are found to have a certain influence on the process of solidification.

关 键 词：板坯 连铸 射钉法 坯壳厚度 凝固系数 

分 类 号：TF777.1[冶金工程—钢铁冶金]