板坯连铸结晶器液面波动行为数值模拟
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摘要
以转炉厂一台板坯连铸机为研究对象,生产铸坯断面为230 mm×1 255 mm,运用ANSYS分析软件建立结晶器三维流动—传热耦合模型研究结晶器内钢渣界面波动,主要考虑了水口倾角、浸入深度和侧孔面积等工艺参数对界面波动的影响。结果表明,工况条件下液渣波动过大的原因是水口内径偏小造成结晶器内钢流速度过大;侧孔倾角的增大,液渣波动明显减弱,综合考虑倾角在20°～25°较适合;浸入深度在140～160 mm变化时,其对液渣波动影响较小;随侧孔面积的增大,液渣波动反而增大。
Taking a slab caster with slab section of 230 mm × 1 255 mm in Converter Plant as the research object, the three-dimensional flow-heat transfer coupling model was established by ANSYS analysis software to study the steel-slag interface fluctuation in the mould. The influence of process parameters such as nozzle inclination, immersion depth and side hole area on interface fluctuation were considered. The results showed that the excessive fluctuation of liquid steel and slag under working conditions was due to the excessive velocity of steel flow in the mould caused by the small inner diameter of nozzle. With the increase of the inclination of the side hole, the liquid steel-slag fluctuation was obviously reduced, and the inclination should be more suitable in20°～25°. When the immersion depth changes from 140 to 160 mm, it has little influence on the liquid steel-slag fluctuation. The liquid steel-slag fluctuation will increase with the increase of side hole area.
Taking a slab caster with slab section of 230 mm × 1 255 mm in Converter Plant as the research object, the three-dimensional flow-heat transfer coupling model was established by ANSYS analysis software to study the steel-slag interface fluctuation in the mould. The influence of process parameters such as nozzle inclination, immersion depth and side hole area on interface fluctuation were considered. The results showed that the excessive fluctuation of liquid steel and slag under working conditions was due to the excessive velocity of steel flow in the mould caused by the small inner diameter of nozzle. With the increase of the inclination of the side hole, the liquid steel-slag fluctuation was obviously reduced, and the inclination should be more suitable in20°～25°. When the immersion depth changes from 140 to 160 mm, it has little influence on the liquid steel-slag fluctuation. The liquid steel-slag fluctuation will increase with the increase of side hole area.
引文
1林晓川,李京社,杨树峰,等.板坯连铸结晶器内液面波动的水模型研究.炼钢,2011,27(2):56~60
2 陈登福,张大江,王翠娜,等.板坯连铸结晶器内液面波动数值模拟.过程工程学报,2010,10(z1):206~210
3 邓小旋,熊霄,王新华,等.水口底部形状对高拉速板坯连铸结晶器液面特征的影响.北京科技大学学报,2014,36(4):515~522
4 任磊,张立峰,王强强.插钉法研究板坯连铸结晶器液面特征.钢铁,2016,51(2):49~54
5 李少翔,杜辰伟,陈培莉,等.水口结构对超宽板坯连铸结晶器内流场和温度场的影响.连铸,2015,40(6):7~14
6 王永胜,侯泽旺,王新华,等.板坯连铸结晶器流场及液面波动的水模研究.钢铁钒钛,2009,30(1):55~59
7 刘国林,吴苏州,张炯明,等.宽板坯连铸结晶器内液面波动的数值模拟.北京科技大学学报,2009,31(2):229~233
8 岳强,翟张霞,裴晓航,等.薄板坯连铸结晶器内钢液流动与传热及凝固耦合的数值模拟.过程工程学报,2015,15(2):205~210
9 熊椰,成泽伟,陈伟庆,等.板坯连铸结晶器工艺参数优化的水模拟研究.钢铁钒钛,2014,35(3):78~82
10 卢海彪,程常桂,李阳,等.结晶器内氩气泡分布及钢渣界面波动行为.钢铁,2018,53(4):27~36
2 陈登福,张大江,王翠娜,等.板坯连铸结晶器内液面波动数值模拟.过程工程学报,2010,10(z1):206~210
3 邓小旋,熊霄,王新华,等.水口底部形状对高拉速板坯连铸结晶器液面特征的影响.北京科技大学学报,2014,36(4):515~522
4 任磊,张立峰,王强强.插钉法研究板坯连铸结晶器液面特征.钢铁,2016,51(2):49~54
5 李少翔,杜辰伟,陈培莉,等.水口结构对超宽板坯连铸结晶器内流场和温度场的影响.连铸,2015,40(6):7~14
6 王永胜,侯泽旺,王新华,等.板坯连铸结晶器流场及液面波动的水模研究.钢铁钒钛,2009,30(1):55~59
7 刘国林,吴苏州,张炯明,等.宽板坯连铸结晶器内液面波动的数值模拟.北京科技大学学报,2009,31(2):229~233
8 岳强,翟张霞,裴晓航,等.薄板坯连铸结晶器内钢液流动与传热及凝固耦合的数值模拟.过程工程学报,2015,15(2):205~210
9 熊椰,成泽伟,陈伟庆,等.板坯连铸结晶器工艺参数优化的水模拟研究.钢铁钒钛,2014,35(3):78~82
10 卢海彪,程常桂,李阳,等.结晶器内氩气泡分布及钢渣界面波动行为.钢铁,2018,53(4):27~36