水口结瘤对板坯连铸结晶器钢水行为影响的数值模拟

doi:10.13228/j.boyuan.issn1005-4006.20200001

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1247 KB) HTML (0 KB)
Export: BibTeX | EndNote (RIS)

Abstract Taking the mold of 230 mm×1 600 mm slab continuous casting machine as the research object, the VOF model was established by CFD numerical simulation method, and the influence of continuous casting nozzle nodule on steel slag interface fluctuation and molten steel flow behavior was studied. The results show that the flow field in the mold is a typical double circulation morphology when there is no nodule at the nozzle.When there is nodule at the nozzle, there will be serious asymmetric flow on both sides of the nozzle in the mould, with a small range of nodule side stream and a large range of non-nodule side stream. The increase of kinetic energy on the non-nodular side of the nozzle leads to the decrease of the vortex center under the mold, which will increase the impact depth of the molten steel. In addition, due to the high vortex center on the nodule side of nozzle, the fluctuation of meniscus surface and steel slag surface is disordered. In the case of nodules, the steel fluid fluctuates greatly, with the maximum fluctuation difference of 4.03 mm. Without nodules, the fluctuation of molten steel is relatively stable, with the maximum fluctuation difference of 1.4 mm.

Key words： mold nozzle clogging flow field steel slag morphology numerical simulation

Received: 05 January 2020

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	MA Hao-ran
	LI Shuang-jiang
	LIU Hong-bo
	LIU Chong
	YAO Liu-jie

Cite this article:

MA Hao-ran,LI Shuang-jiang,LIU Hong-bo等. Numerical simulation of the effect of nozzle nodule on the behavior of molten steel in slab continuous casting mold[J]. CONTINUOUS CASTING, 2020, 39(3): 14-17.

URL:

http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20200001 OR http://www.chinamet.cn/Jweb_lz/EN/Y2020/V39/I3/14

[1]	徐海伦,文光华,唐萍,等.板坯连铸结晶器内非对称流动现象的数值模拟[J].北京科技大学学报,2009,31(6):770.
[2]	黄国俊,仝太钦,张正林,等.大圆坯连铸机水口结瘤原因分析及对策[J].连铸,2019,44(6):5.
[3]	季莎,罗艳,张国锋,等.40Cr钢浸入式水口结瘤分层结构的形成机理[J].钢铁,2019,54(8):124.
[4]	Bai H, Thomas B G.Effects of clogging, argon injection, and continuous casting conditions on flow and air aspiration in submerged entry nozzles[J]. Metallurgical and Materials Transactions:B,2001,32(4) :707.
[5]	ZHANG L,WANG Y,ZUO X.Flow transport and inclusion motion in steel continuous-casting mold under submerged entry nozzle clogging condition[J]. Metallurgical and Materials Transactions:B,2008,39(4): 534.
[6]	LI B,Okane T,Umeda T.Modeling of biased flow phenomena associated with the effects of static magnetic-field application and argon gas injection in slab continuous casting of steel[J]. Metallurgical and Materials Transactions:B,2001,32(6):1053.
[7]	WU Su-zhou,ZHANG Jiong-ming,LI Zhi-zheng.Mathematic model of SEN clogging during continuous casting of steel[J]. Journal of Iron and Steel Research,International,2010,17(8):6.
[8]	YUAN F,WANG X,ZHANG J,et al.Numerical simulation of Al2O3 deposition at a nozzle during continuous casting[J]. Journal of University of Science and Technology Beijing,2008,15(3):227.
[9]	秦绪锋,程常桂,李阳,等.上水口环形吹氩对中间包内渣眼形成的影响[J].钢铁,2019,54(8):107.
[10]	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.
[11]	谢集祥,罗钢,刘浏,等. 1 850 mm×230 mm板坯连铸结晶器流场与温度场数值模拟[J].中国冶金,2020,30(2):54.
[12]	文艳梅,韩延申,刘青,等.大方坯结晶器内的多物理场模拟优化[J].钢铁,2018,53(6):53.
[13]	秦绪锋,程常桂,李阳,等.上水口环形吹氩对中间包内渣眼形成的影响[J].钢铁,2019,54(8):107.