Effect of mold width on level characteristics in continuous casting mold of slab
DENG Xiao-xuan1,2，JI Chen-xi1,2，AN Ze-qiu3，ZHU Guo-sen3，SUO Jin-liang4，HUANG Fu-xiang4
（1. Strip Technology Department， Shougang Research Institute of Technology， Beijing 100043，China 2. Beijing Key Laboratory of Green Recyclable Process for Iron and Steel Production Technology， Beijing 100043， China 3. Shougang Jingtang United Iron and Steel Co.， Ltd.， Tangshan 063200， Hebei， China 4. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083， China）
Abstract：In continuous casting，the mold width inevitably varied to meet the requirements of the different customers. However，the casting throughput was not easy to change due to the constraint of casting period. Therefore，it is meaningful to investigate the effect of mold with on level characteristics at the fixed casting rates and control the mold level according to the results. A full scale water modeling and industrial experiments was carried out to investigate the effects of mold widths on meniscus characteristics in the mold of slab at the fixed steel throughputs. The results of water modelling show that the location of jet impingement point on narrow faces decreases from 370 mm to 510 mm as the mold width increases from 1 050 mm to 1 900 mm. Furthermore，the average level fluctuation drops from 4.4 mm to 2.5 mm and the surface velocity decreases from 0.42 m/s to 0.15 m/s with the mold width rising up. The industrial experiments also show the similar trend as the results of water modeling. Accordingly，the mold level characteristic should be adjusted dynamically based on the slab width.
收稿日期: 2016-12-21
出版日期: 2017-07-28
引用本文:
邓小旋，季晨曦，安泽秋，朱国森，索金亮，黄福祥. 宽度对板坯连铸结晶器液面特征影响[J]. 钢铁, 2017, 52(8): 48-54.
DENG Xiao-xuan，，JI Chen-xi，，AN Ze-qiu，ZHU Guo-sen，SUO Jin-liang，HUANG Fu-xiang. Effect of mold width on level characteristics in continuous casting mold of slab. Iron and Steel, 2017, 52(8): 48-54.
苑鹏, 邓小旋, 姜敏, 等.低碳铝镇静钢铸坯皮下钩状坯壳[J].钢铁,2015, 50 (8): 24.(YUAN Peng, DENG Xiaoxuan, JIANG Min.et al. Investigation of subsurface hooks in continuous cast low carbon aluminum-killed steel slab [J]. Iron and Steel. 2015, 50(8): 24.)[ ]Mizukami H, Yamanaka A. Generation mechanism of unevenness of ultra-low carbon steel at initial stage of solidification[J]. Tetsu-To-Hagane, 2008, 94(11): 507.[ ]Zhang L, Thomas B G. State of the art in evaluation and control of steel cleanliness[J]. ISIJ Int, 2003, 43(3): 271.[ ]Zhang L, Yang S, Cai K, et al. Investigation of fluid flow and steel cleanliness in the continuous casting strand[J]. Metall Mater Trans B, 2007, 38(1): 63.[ ]Deng X, Li L, Wang X, et al. Subsurface macro-inclusions and solidified hook character in aluminum-killed deep-drawing steel slabs[J]. Int J Min Met Mater, 2014, 21(6): 531.[ ]包燕平, 祝三胜,田乃媛, 等.薄板坯连铸结晶器水模试验研究[J]. 特殊钢, 1998, 19(2): 7.(BAO Yan-ping，ZHU San-sheng，TIAN Nai-yuan，et al. Water-modelling study of fluid flow in thin-slab continuous casting mould[J]. Special Steel，1998,19(2) : 7.)[ ]马范军, 文光华, 李刚. 板坯连铸结晶器内钢液流动数值模拟[J]. 金属学报, 2000, 36(4): 399. (MA Fan-jun, WEN Guang-hua, LI Gang. Numerical simulation of fluid flow in the mould for slab continuous casting[J]. Acta Metall Sin,2000.36(4):399.)[ ]王军, 金百刚, 殷浩. 板坯连铸结晶器内流场的水模型实验研究[J]. 炼钢, 2010, (3): 55.(WANG Jun, JIN Bai-gang, YIN Hao. Water model investigation of fluid field in the mold of slab continuous caster in Ansteel[J]. Iron and Steel,2010, (3): 55.)[ ]徐绵广, 刘和平, 陈远清. 漏斗形结晶器宽度对流动, 传热凝固行为影响的数值模拟[J]. 钢铁钒钛, 2012, 33(6): 63.(XU Mian-guang, LIU He-ping, CHEN Yuan-qing. Numerical simulation of fluid flow and thermal characteristics in the funnel-type mold with different width [J],Iron Steel Vanadium Titanium, 2012, 33(6): 63.)[ ]唐德池, 冯捷, 李永林, 等. 宽度变化对板坯连铸结晶器流场影响的数值模拟[J]. 钢铁, 2011, 46(12): 37.(TANG De-chi，FENG Jie，LI Yong-lin，et al. Numerical simulation for effect of width on flow field of slab continuous casting mould [J] Iron and Steel，2011,46(12) : 37. )[ ]陈永范, 陈德杰,李权. 大板坯连铸结晶器内流场实验研究[J]. 炼钢, 1998, 14(2): 25.(CHEN Yongfan, FAN De-jie,LI Quan. Experimental study on turbulance flow zone in slab continuous casting mould[J]. Steelmaking, 1998, 14(2):25.)[ ]王叶婷, 赵洪强, 国兴龙, 等. 不锈钢板坯宽度对结晶器内钢水流动和温度状态影响[J]. 连铸, 2011, S1: 110.(WANG Ye-ting, ZHAO Hong-qiang, GUO Xing-long, et al. Flow and temperature field of molten stainless steel in the slab casting mould for different widths [J]. Continuous Casting, 2011, S1: 110.)[ ]邓小旋, 黄琦, 王新华, 等. 凝固坯壳对高拉速板坯连铸结晶器液面特征的影响[J]. 北京科技大学学报, 2014, 36(9): 1247.(DENG Xiao-xuan, HUANG Qi, WANG Xin-hua, et al. Effect of solidified shell on level characteristics in continuous casting slab molds for high speed casting[J]. 2014, 36(9): 1247.)[ ] 邓小旋, 王强强, 钱龙, 等. 适合漏斗型薄板坯连铸结晶器三孔水口的水模型优化[J].钢铁,2012, 47 (7): 26.(DENG Xiao-xuan, WANG Qiang-qiang, QIAN Long, et al. Water model optimization of three-port submerged entry nozzle feeding a funnel-shaped thin slab mold[J].Iron Steel,2012,47(7):26.)[ ] 任磊, 张立峰, 王强强. 插钉法研究板坯连铸结晶器液面特征[J].钢铁,2016, 51 (2): 49.(REN Lei, ZHANG Li-feng, WANG Qiang-qiang. Nail board experiments to investigate level characteristic in slab continuous casting mold [J]. Iron and Steel,2016,51(2):49.)[ ] Herbertson J, He Q L, Flint P J, et al. Modeling of metal delivery to continuous casting moulds[C] // 1991 Steelmaking Conference. 1991:171.[ ] Kubota J, Okimoto K, Shirayama A, et al. Meniscus flow control in the mold by traveling magnetic field for high speed slab caster[C] // Steelmaking Conference. Washington, D.C.; USA, 1991: 233.[ ] 王现辉, 王新华, 张炯明, 景财良. CSP结晶器内钢液面动态失稳现象的水模型实验[J]. 北京科技大学学报, 2009, 31(2): 234.(WANG Xian-hui, WANG Xin-hua, ZHANG Jiong-ming, et al. Water modeling study on the meniscus dynamic distortion of molten steel level in a CSP thin slab casting mould[J]. J Univ Sci Technol Beijing, 2009, 31(2): 234.)[ ] Chaudhary R, Lee G-G, Thomas B G, et al. Transient mold fluid flow with well- and mountain-bottom nozzles in continuous casting of steel[J]. Metall Mater Trans B, 2008, 39(6): 870.[ ] Deng X, Ji C, Cui Y, et al. Flow pattern control in continuous slab casting moulds: physical modelling and plant trials [J]. Ironmaking Steelmaking, 2016: DOI:10.1080/03019233.2016.1215666.
[ ]
苑鹏, 邓小旋, 姜敏, 等.低碳铝镇静钢铸坯皮下钩状坯壳[J].钢铁,2015, 50 (8): 24.(YUAN Peng, DENG Xiaoxuan, JIANG Min.et al. Investigation of subsurface hooks in continuous cast low carbon aluminum-killed steel slab [J]. Iron and Steel. 2015, 50(8): 24.)[ ]Mizukami H, Yamanaka A. Generation mechanism of unevenness of ultra-low carbon steel at initial stage of solidification[J]. Tetsu-To-Hagane, 2008, 94(11): 507.[ ]Zhang L, Thomas B G. State of the art in evaluation and control of steel cleanliness[J]. ISIJ Int, 2003, 43(3): 271.[ ]Zhang L, Yang S, Cai K, et al. Investigation of fluid flow and steel cleanliness in the continuous casting strand[J]. Metall Mater Trans B, 2007, 38(1): 63.[ ]Deng X, Li L, Wang X, et al. Subsurface macro-inclusions and solidified hook character in aluminum-killed deep-drawing steel slabs[J]. Int J Min Met Mater, 2014, 21(6): 531.[ ]包燕平, 祝三胜,田乃媛, 等.薄板坯连铸结晶器水模试验研究[J]. 特殊钢, 1998, 19(2): 7.(BAO Yan-ping，ZHU San-sheng，TIAN Nai-yuan，et al. Water-modelling study of fluid flow in thin-slab continuous casting mould[J]. Special Steel，1998,19(2) : 7.)[ ]马范军, 文光华, 李刚. 板坯连铸结晶器内钢液流动数值模拟[J]. 金属学报, 2000, 36(4): 399. (MA Fan-jun, WEN Guang-hua, LI Gang. Numerical simulation of fluid flow in the mould for slab continuous casting[J]. Acta Metall Sin,2000.36(4):399.)[ ]王军, 金百刚, 殷浩. 板坯连铸结晶器内流场的水模型实验研究[J]. 炼钢, 2010, (3): 55.(WANG Jun, JIN Bai-gang, YIN Hao. Water model investigation of fluid field in the mold of slab continuous caster in Ansteel[J]. Iron and Steel,2010, (3): 55.)[ ]徐绵广, 刘和平, 陈远清. 漏斗形结晶器宽度对流动, 传热凝固行为影响的数值模拟[J]. 钢铁钒钛, 2012, 33(6): 63.(XU Mian-guang, LIU He-ping, CHEN Yuan-qing. Numerical simulation of fluid flow and thermal characteristics in the funnel-type mold with different width [J],Iron Steel Vanadium Titanium, 2012, 33(6): 63.)[ ]唐德池, 冯捷, 李永林, 等. 宽度变化对板坯连铸结晶器流场影响的数值模拟[J]. 钢铁, 2011, 46(12): 37.(TANG De-chi，FENG Jie，LI Yong-lin，et al. Numerical simulation for effect of width on flow field of slab continuous casting mould [J] Iron and Steel，2011,46(12) : 37. )[ ]陈永范, 陈德杰,李权. 大板坯连铸结晶器内流场实验研究[J]. 炼钢, 1998, 14(2): 25.(CHEN Yongfan, FAN De-jie,LI Quan. Experimental study on turbulance flow zone in slab continuous casting mould[J]. Steelmaking, 1998, 14(2):25.)[ ]王叶婷, 赵洪强, 国兴龙, 等. 不锈钢板坯宽度对结晶器内钢水流动和温度状态影响[J]. 连铸, 2011, S1: 110.(WANG Ye-ting, ZHAO Hong-qiang, GUO Xing-long, et al. Flow and temperature field of molten stainless steel in the slab casting mould for different widths [J]. Continuous Casting, 2011, S1: 110.)[ ]邓小旋, 黄琦, 王新华, 等. 凝固坯壳对高拉速板坯连铸结晶器液面特征的影响[J]. 北京科技大学学报, 2014, 36(9): 1247.(DENG Xiao-xuan, HUANG Qi, WANG Xin-hua, et al. Effect of solidified shell on level characteristics in continuous casting slab molds for high speed casting[J]. 2014, 36(9): 1247.)[ ] 邓小旋, 王强强, 钱龙, 等. 适合漏斗型薄板坯连铸结晶器三孔水口的水模型优化[J].钢铁,2012, 47 (7): 26.(DENG Xiao-xuan, WANG Qiang-qiang, QIAN Long, et al. Water model optimization of three-port submerged entry nozzle feeding a funnel-shaped thin slab mold[J].Iron Steel,2012,47(7):26.)[ ] 任磊, 张立峰, 王强强. 插钉法研究板坯连铸结晶器液面特征[J].钢铁,2016, 51 (2): 49.(REN Lei, ZHANG Li-feng, WANG Qiang-qiang. Nail board experiments to investigate level characteristic in slab continuous casting mold [J]. Iron and Steel,2016,51(2):49.)[ ] Herbertson J, He Q L, Flint P J, et al. Modeling of metal delivery to continuous casting moulds[C] // 1991 Steelmaking Conference. 1991:171.[ ] Kubota J, Okimoto K, Shirayama A, et al. Meniscus flow control in the mold by traveling magnetic field for high speed slab caster[C] // Steelmaking Conference. Washington, D.C.; USA, 1991: 233.[ ] 王现辉, 王新华, 张炯明, 景财良. CSP结晶器内钢液面动态失稳现象的水模型实验[J]. 北京科技大学学报, 2009, 31(2): 234.(WANG Xian-hui, WANG Xin-hua, ZHANG Jiong-ming, et al. Water modeling study on the meniscus dynamic distortion of molten steel level in a CSP thin slab casting mould[J]. J Univ Sci Technol Beijing, 2009, 31(2): 234.)[ ] Chaudhary R, Lee G-G, Thomas B G, et al. Transient mold fluid flow with well- and mountain-bottom nozzles in continuous casting of steel[J]. Metall Mater Trans B, 2008, 39(6): 870.[ ] Deng X, Ji C, Cui Y, et al. Flow pattern control in continuous slab casting moulds: physical modelling and plant trials [J]. Ironmaking Steelmaking, 2016: DOI:10.1080/03019233.2016.1215666.
2017, Vol. 52 
