高钛钢板坯连铸凝固传热与压下量数值计算研究  

Numerical investigation on the solidification process and the theoretical reduction amount of high titanium steel continuous casting slab

作　　者：吴晨辉 谢鑫 李阳 张敏[1] 吴国荣[1] 曾建华[1] 何为[1] Wu Chenhui;Xie Xin;Li Yang;Zhang Min;Wu Guorong;Zeng Jianhua;He Wei(Pangang Group Panzhihua Research Institute of Iron and Steel Co.,Ltd.,Panzhihua 617000,Sichuan,China)

机构地区：[1]攀钢集团攀枝花钢铁研究院有限公司,四川攀枝花617000

出　　处：《钢铁钒钛》2021年第6期199-205,共7页Iron Steel Vanadium Titanium

摘　　要：高钛钢具有较高的耐磨性、韧性、强度及晶间抗腐蚀性,已得到较普遍应用。针对高钛钢板坯连铸过程凝固传热与理论压下量开展了数值计算研究,结果表明:拉速1.0 m/min时,高钛钢在结晶器出口位置坯壳厚度约15 mm,凝固终点距弯月面约20.4 m,两相区长度约10.8 m,拉速每增加0.1 m/min,结晶器出口坯壳厚度减小约0.2 mm,凝固终点向后移动1.7 m,两相区长度增加约0.9 m,不同拉速时,补缩两相区凝固收缩所需理论压下量基本相同,约为2.2 mm。High titanium steel has high wear resistance,toughness,strength and intergranular corrosion resistance,and has been widely applied to many fields.In present work,the solidification process and the theoretical reduction amount of the high titanium steel continuous casting slab were numerically investigated.The results indicate that the shell thickness at the exit of crystallizer is 15 mm,and the solidification end is located at 20.4 m from the meniscus with the mushy region length of 10.8 m,at the casting speed of 1.0 m/min.With the casting speed increased by 0.1 m/min,the shell thickness at the exit of crystallizer decreases by 0.2 mm,and the solidification end moves backwards by about 1.7 m,with the mushy region length increased by 0.9 m.The required theoretical reduction amount for compensating the solidification shrinkage of the mushy region keeps at about 2.2 mm under different casting speeds.

关 键 词：高钛钢 连铸 板坯 凝固传热 轻压下 

分 类 号：TF823[冶金工程—有色金属冶金] TF777