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| Influence of nozzle immersion depth on liquid steel flow in CSP mould |
| PEI Ying-hao1, ZHU Tao1, WANG Ru-yu2, XIAO Chao3, WANG Hai-jun3 |
1. Technology Center, Ma′anshan Iron and Steel Co., Ltd.,Ma′anshan 243000, Anhui, China;
2. Cold Rolling Plant,Ma′anshan Iron and Steel Co., Ltd.,Ma′anshan 243000, Anhui, China;
3. School of Metallurgical Engineering, Anhui University Of Technology, Ma′anshan 243032, Anhui, China |
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Abstract In order to solve the problem of CSP slab surface quality under high-speed production conditions, the liquid steel flow and level fluctuation of the CSP mould has been studied by numerical calculation method with FLUENT for the CSP continuous caster of a factory. The research results show that the flow field in the mould is basically the same when different nozzle immersion depths. Increasing the nozzle immersion depth has no obvious effect on the mould flow field. The immersion depth of the nozzle directly determines the position where the stream flowing from the nozzle hits the narrow surface of the mould. Furthermore, when the immersion depth of the nozzle increases from 300, 340 to 380 mm, the maximum flow velocity at the liquid level is 0.180, 0.160 and 0.127 m/s respectively. When the nozzle is immersed in depth, the disturbance of the mold backflow on the mould level fluctuation will be weakened, and the corresponding number of slag coiling will be reduced.
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Received: 21 March 2021
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| [1] |
LIU He-ping,YANG Chun-zheng, ZHANG Hui, et al. Numerical simulation of fluid flow and thermal characteristics of thin slab in the funnel-type molds of two casters[J].ISIJ International, 2011, 51 (3):392.
|
| [2] |
牛永青,张志克,张学武,等. 邯钢CSP连铸机浸入式水口的优化及改进[J].连铸, 2011(增刊1):496.
|
| [3] |
王学东,谯德高,张荣堂. CSP连铸中间包流场数学模拟优化与实践[J].铸造技术, 2015, 36 (12):2934.
|
| [4] |
李杰. CSP薄板坯连铸结晶器内钢液非对称流场的研究[D]. 秦皇岛:燕山大学, 2019.
|
| [5] |
隋亚飞,邓之勋,赵如,等.CSP产线下汽车结构用热轧酸洗板中的夹杂物[J].钢铁,2021,56(4):44.
|
| [6] |
伍旋,王明林,张延玲,等.高拉速板坯结晶器流场影响因素的模拟研究[J].炼钢, 2020, 36 (1):27.
|
| [7] |
张胤,贺友多,白学军,等. 水口插入深度对连铸机结晶器内钢液流动的影响[J].炼钢, 2001, 17(2):52.
|
| [8] |
张静,马靓,吴会平. 水口结构对连铸中低碳钢流场和温度场的影响[J]. 钢铁, 2019, 54(8): 116.
|
| [9] |
张开天,刘建华,崔衡,等. 浸入式水口对结晶器钢水流动与液面波动的影响[J].工程科学学报, 2018, 40 (6):697.
|
| [10] |
朱志强,曾建立,王占武,等. 武钢CSP连铸结晶器液面波动控制实践[C]// 2014年全国炼钢—连铸生产技术会,唐山:中国金属学会, 2014.
|
| [11] |
刘中秋,李宝宽. 连铸结晶器内偏流及漩涡卷渣的实验研究[J].东北大学学报(自然科学版), 2017, 38 (5): 666.
|
| [12] |
吴建春,方园,陈先锋. 薄带连铸低碳钢表面夹渣的形成机制[J]. 连铸, 2019 (4):26.
|
| [13] |
孔超,田鹏,林大帅,等. 板坯连铸结晶器液面异常波动原因分析[J]. 连铸, 2019 (5):31.
|
| [14] |
杨燕. 薄板坯连铸结晶器内钢液流动行为的数学物理模拟[D]. 沈阳:东北大学,2008.
|
| [15] |
LIU Xu-feng,ZHANG Jie-yu, DU Wei-dong, et al, Numerical simulation of coupled molten steel flow and temperature fields in compact strip production casting[J]. Journal of Iron and Steel Research International, 2007,14 (3):20.
|
| [16] |
杨昌霖, 高琦, 姚成功, 等. 板坯连铸结晶器铜板水槽的优化设计[J]. 中国冶金, 2021, 31(3): 101.
|
| [17] |
胡群, 张硕, 王璞, 等. 大方坯结晶器内液面波动与卷渣行为[J]. 中国冶金, 2020, 30(6): 63.
|
| [18] |
王伟, 朱立光, 张彩军, 等. 180 mm×610 mm板坯连铸结晶器内流场水模型及数值模拟[J]. 中国冶金, 2020, 30(2): 46.
|
| [19] |
刘增勋, 张朝阳, 肖鹏程, 等. 冷却工艺对高速连铸结晶器传热的影响[J]. 钢铁, 2021, 56(5): 41.
|
| [20] |
牛亮, 赵俊学, 仇圣桃, 等. 偏心M-EMS作用下连铸圆坯流动-传热模拟[J]. 钢铁, 2020, 55(9): 49.
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2021, Vol. 40 
