电磁搅拌智能控制系统在连铸中的应用与实践

doi:10.13228/j.boyuan.issn1005-4006.20210069

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (5656 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Electromagnetic stirring is an effective way to improve the internal quality of slab and expand the production variety. In order to solve the quality problems that the ratio of C-grade products was only 45.48% and the proportion of central porosity was 14.72% before electromagnetic stirring in the secondary cooling zone of No.3 slab caster, the intelligent control system of electromagnetic stirring was implemented. When the technological conditions such as drawing speed, tundish temperature and steel grade changed, the oscillating magnetic field was formed by the current fluctuation in real time. At the same time, the process is optimized comprehensively by means of molten steel purity, roll gap precision, narrow temperature and narrow composition control.The results show that the ratio of C-grade increases from 45.48% to 100%, the proportion of center porosity decreases from 14.72% to 0, and the pass rate of steel plate flaw detection increases from 95% to more than 99.80%, reaching the quality control level of billet equipped with soft reduction casting machine.

Key words： continuous casting central porosity electromagnetic stirring intelligent control oscillating magnetic field process optimization

Received: 12 June 2021

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20210069 OR http://www.chinamet.cn/Jweb_lz/EN/Y2021/V40/I4/59

[1]	JI C, WU C H, ZHU M Y. Thermo-mechanical behavior of the continuous casting bloom in the heavy reduction process[J]. JOM, 2016, 68(12): 3107.
[2]	周滨新, 张康晖, 马建超, 等. 70钢小方坯芯部质量优化[J]. 中国冶金, 2021, 31(1): 42.
[3]	潘贻芳,祭程,张晓博,等. 宽厚板坯连铸二冷工艺开发与应用[J]. 中国冶金, 2012, 22(9): 42.
[4]	赵军普,刘浏,饶金元. 凝固压下对大方坯中心致密性的影响[J].钢铁, 2018, 53(9): 30.
[5]	余伟, 张烨铭, 何春雨, 等. 轧制复合生产特厚板工艺[J]. 北京科技大学学报, 2011, 33(11): 1391.
[6]	刘慧斌. 核电站压力容器用特厚钢板的生产技术[J]. 世界钢铁, 2010, 10(1): 42.
[7]	袁少威, 刘庆波, 庞百鸣, 等. 抗层状撕裂高层建筑用100 mm厚Q420GJC-Z35钢板的开发[J]. 轧钢, 2013, 30(2): 25.
[8]	陈洪智,常运合,张家泉,等. 不锈钢板坯连铸自由线收缩与辊缝研究[J]. 中国冶金, 2012, 22(2): 25.
[9]	张继永,李爱民,李红俊,等.汽车大梁钢板形缺陷产生的原因及对策[J].河北冶金,2021(5):65.
[10]	YUE Q, ZHANG C B, PEI X H. Magnetohydrodynamic flows and heat transfer in a twin-channel induction heating tundish[J]. Ironmaking and Steelmaking, 2017, 44(3): 227.
[11]	李永超,卢彩玲,左健成,等.轴承钢中间包首炉大型夹杂物分析及控制[J].连铸,2021(3):35.
[12]	肖红,徐辉,何浩,等.基于数值模拟的五流感应加热中间包流场优化[J].中国冶金,2021,31(1):14.
[13]	李维彪, 王芳, 齐凤升, 等. 结晶器喂钢带连铸坯凝固过程的数学模拟[J]. 金属学报, 2007, 43(11): 1191.
[14]	郭银涛.包晶钢结晶器液面波动的原因及控制[J].河北冶金,2021(3):51.
[15]	JIANG D B, ZHU M Y. Solidification structure and macrosegregation of billet continuous casting process with dual electromagnetic stirrings in mold and final stage of solidification: a numerical study[J]. Metallurgical and Materials Transactions B, 2016, 47(6): 3446.
[16]	郑英辉,赵建平,唐广鹏.电磁制动技术在FTSC薄板坯连铸中的应用[J].河北冶金,2021(3):74.
[17]	GUAN R, JI C, WU C H, et al. Numerical modelling of fluid flow and macrosegregation in a continuous casting slab with asymmetrical bulging and mechanical reduction[J]. International Journal of Heat and Mass Transfer, 2019, 141: 503.
[18]	杨恩蛟,姜敏,侯泽旺,等.连铸板坯凝固末端大压下改善铸坯内部质量[J].中国冶金,2020,30(5):23.
[19]	朱苗勇.新一代高效连铸技术发展思考[J].钢铁,2019,54(8):21.
[20]	GUAN R, JI C, ZHU M Y. Modeling the effect of combined electromagnetic stirring modes on macrosegregation in continuous casting blooms[J]. Metallurgical and Materials Transactions B, 2020, 51(3): 1137.
[21]	赫冀成. 电磁场对改善钢材质量的作用[J]. 钢铁, 2005, 40(1): 24.
[22]	肖红,易兵,龙萌,等.连铸结晶器电磁搅拌技术的新发展[J].连铸,2017(4):1.
[23]	陈国威, 李具中, 刘光明, 等.板坯连铸机辊式电磁搅拌的应用实践[J].武钢技术, 2007, 46(1): 33.
[24]	刘春, 金百刚. 板坯电磁搅拌参数的优化研究[J].冶金丛刊, 2012 (1): 11.
[25]	张永杰, 赫冀成. 材料电磁过程研究在宝钢[C]//中国钢铁年会论文集, 北京:中国金属学会,2007, 24(3): 352.