高拉速薄板坯连铸结晶器钢渣界面波动分析

doi:10.13228/j.boyuan.issn1005-4006.20200076

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Abstract In order to deal with the instability behavior of molten steel in the thin slab mold with increasing casting speed, taking the 1 520 mm×90 mm thin slab mold as the research object, the liquid level tracking technology VOF method was used to model and calculate the steel slag interface in the thin slab continuous casting mold. The fluid flow and the behavior of steel/slag interface in thin slab continuous casting mould were simulated. Combined with the actual production process, the effects of casting speed, immersion depth and mold flux viscosity on mold flow field and slag interface were analyzed by 1∶1 physical model and numerical simulation. The results show that when the liquid steel flow rate is 0.20-0.25 m/s and the interface is stable, the mold flux viscosity higher than 0.237 Pa·s can be applied. When the liquid steel flow rate is 0.25-0.30 m/s and the viscosity of mold flux is 0.382 Pa·s, the slag entrapment rate of low carbon steel is less than 0.5%, showing good slag entrapment ability.

Key words： high casting speed thin slab wave analysis 1∶1 water simulation steel slag interface numerical simulation

Received: 01 July 2020 Published: 23 February 2021

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	Articles by authors
	LI Kang-kang
	ZHANG Cai-jun
	XIAO Peng-cheng
	YUAN Zhi-peng
	HOU Ming-shan
	ZHENG Ying-hui

Cite this article:

LI Kang-kang,ZHANG Cai-jun,XIAO Peng-cheng等. Analysis on interface fluctuation of steel slag in mold of high casting speed thin slab continuous casting[J]. CONTINUOUS CASTING, 2021, 40(1): 9-14.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20200076 OR http://www.chinamet.cn/Jweb_lz/EN/Y2021/V40/I1/9

[1]	Thomas B G, Mika L J, Najjar F M. Simulation of fluid flow inside a continuous slab-casting machine[J]. Metallurgical and Materials Transactions:B, 1990, 21(2):387.
[2]	Zhang L, Aoki J, Thomas B G. Inclusion removal by bubble flotation in a continuous casting mold[J]. Metallurgical and Materials Transactions:B, 2006, 37(3):361
[3]	朱苗勇. 高效连铸结晶器冶金过程控制关键技术探讨[J]. 连铸,2011(增刊1):1.
[4]	陈芝会, 王恩刚, 张兴武,等. 静磁场控制板坯连铸结晶器液面波动[J]. 钢铁研究学报, 2008,18(2):25.
[5]	李壮, 徐宇, 王恩刚. 板坯电磁连铸结晶器内钢/渣界面波动及流动行为的数值模拟[J]. 连铸, 2016 (2):1.
[6]	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.
[7]	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.
[8]	薛瑞, 张燕超, 张彩军,等. 160 mm×160 mm小方坯连铸结晶器内流场数值模拟[J]. 中国冶金, 2020, 30(1):51.
[9]	吴振刚,陈永范,王爱东,等. 薄板坯高拉速浸入式水口研究与优化[J]. 连铸,2020(1):29.
[10]	马浩冉,李双江,刘洪波,等. 水口结瘤对板坯连铸结晶器钢水行为影响的数值模拟[J]. 连铸,2020(3):14.
[11]	王永胜,王新华,王万军. 高拉速板坯连铸结晶器液面波动影响因素研究[J].中国冶金,2009,19(9):24.
[12]	庄迎, 李吉东. 不锈钢方坯连铸结晶器内钢渣界面行为的数值模拟研究[J]. 连铸, 2016 (5):26.
[13]	张建伟, 苏旺, 崔衡,等. PIV测速技术分析异型坯连铸结晶器流场[J]. 连铸, 2019 (1):54.
[14]	Akira Matsushita, Katsuyuki Isogami, Masami Temma,et al. Direct observation of molten steel meniscus in CC mold during casting[J]. Transactions of the Iron and Steel Institute of Japan, 2006, 28(7):531.
[15]	周士凯, 徐学华, 王宝峰,等. 连铸智能化物理模拟创新平台的建设与实践[J]. 连铸, 2018 (2):20.