连铸坯凝固末端电磁搅拌位置及连铸工艺优化

doi:10.13228/j.boyuan.issn1005-4006.20220010

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Abstract In order to predict the position of the solidified end of 180 mm×220 mm bearing steel billet, the nail shooting test was carried out on a billet caster in China, and the research on the position of solidified end of continuous casting process parameters (superheat, cooling strength, drawing speed) was studied based on Thercast simulation. The results show that the end point of solidification of 180 mm×220 mm bearing steel billet is 11.39 m away from menscus, and the end electromagnetic stirring position is 11.40 m at the superheat temperature of 20 ℃ and drawing speed of 0.85 m/min, which cannot give full play to the role of end electromagnetic stirring. According to the nail test, Thercast simulation results, equipment conditions, production rhythm and other factors, the continuous casting process was optimized. The mold water and foot roller water is appropriately reduced, other parameters remain unchanged. The low quality of continuous casting billet shows that there are loose shrinkage holes in the center of the billet before the process optimization, and the central porosity is grade 1 and the central segregation is grade 0 after the process optimization, which meet the quality requirements. In addition, the carbon range of the billet after the process optimization is tested by the nine-point method, and the value is no more than 0.12%, which meets the quality requirements.

Key words： billet continuous casting end electromagnetic stirring Thercast simulation bearing steel

Received: 10 January 2022

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	Articles by authors
	PAN Peng
	HOU Dong
	GE Wen-ying
	LIU Bing
	QU Tian-peng
	WANG De-yong

Cite this article:

PAN Peng,HOU Dong,GE Wen-ying等. Position of electromagnetic stirring at solidification end of continuous casting billet and optimization of continuous casting process[J]. CONTINUOUS CASTING, 2022, 41(2): 66-76.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220010 OR http://www.chinamet.cn/Jweb_lz/EN/Y2022/V41/I2/66

[1]	刘筠,刘顺.高碳钢射钉试验钢钉材料的研究[J].连铸,2017(1):51.
[2]	倪满森.连铸坯的中心偏析问题[J].连铸,2001(6):24.
[3]	陈亮,宋波,陈天明,等.45钢连铸大方坯中心疏松与缩孔控制[J].钢铁,2018,53(8):49.
[4]	杨素波,陈永,李桂军.大方坯连铸动态轻压下技术应用研究[J].钢铁,2005,40(6):24.
[5]	朱苗勇,祭程,罗森.连铸坯偏析检验及其控制[M].北京:冶金工业出版社,2015.
[6]	王波,陈列,张旭,等.特殊钢连铸大方坯末端电磁搅拌位置研究与应用[J].连铸,2016(5):17.
[7]	张炯明,张立,杨会涛,等.板坯结晶器钢水凝固的数值模拟[J].北京科技大学学报,2004(2):130.
[8]	ZHANG L, SHEN H. Numerical simulation on solidification and thermal stress of continuous casting billet in mold based on meshless methods[J]. Materials Science and Engineering: A, 2007, 46(6):71.
[9]	田汉蒲,左著,吕士忠,等.水平连铸电磁搅拌技术开发及应用[J].钢铁,2010,45(8):25.
[10]	叶玉奎,姚骋,刘宇,等.大方坯轴承钢GCr15凝固传热数值模拟[J].连铸,2020(6):15.
[11]	LI Shao-xiang, WANG Pu, LAN Peng, et al. Melt flow and heat transfer at the crater end of round billet continuous casting using final electromagnetic stirring[J]. Chinese Journal of Engineering, 2019, 41(6): 748.
[12]	赵杨.中高碳钢连铸板坯中心偏析的控制[J].河北冶金,2021(8):47.
[13]	王超,穆敬飞.末端电磁搅拌对轴承钢连铸坯内部质量的影响[J].连铸,2012(6):40.
[14]	葛亮,曾亚南,汪成义,等.大方坯末端电磁搅拌工艺参数优化[J].炼钢,2015,31(1):61.
[15]	刘坚锋,董富军,葛启录,等.轧制工艺对14Cr1MoR钢板组织与性能的影响[J].金属热处理,2020,45(4):115.
[16]	靳同红,孙红英,张瑞军,等.GCr15轴承钢连铸坯宏观碳偏析的基本规律[J].中国冶金,2008,18(7):19.
[17]	栗伟,朱国森,王万军,等.连铸坯液相穴长度的测定研究[J].北京科技大学学报,2003(4):315.
[18]	FENG L H, ZHU M Y, LIU K.Study on the position of final solidifying end of continuous casting slab[J].Iron Steel,2009,44(5):23.
[19]	CHEN M L, CHEN D F., ZHANG L F, et al. Testing and simulating study on the solid shell shape of slab continuous casting[J]. The Chinese Journal of Process Engineering, 2009, 9(s1):390
[20]	王彪,谢植,汪灿荣,等.基于射钉法的小方坯凝固过程数值模拟[J].铸造技术,2007(3):435.
[21]	Kawawa T, Sato H. Determination of solidifying shell thickness of continuous cast slab by rivet pin shooting[J]. Testsu-to-Hagane,1974,(60):206.
[22]	赵敏森,夏文勇,彭世恒. 连铸板坯液芯测定[C]//连铸二次冷却技术交流会论文汇编.北京,中国金属学会,2005:99.
[23]	毛斌,张桂芳,李爱武.连续铸钢用电磁搅拌的理论与技术[M].北京:冶金工业出版社,2012.
[24]	YANG H, ZHANG X, DENG K, et al. Mathematical simulation on coupled flow, heat, and solute transport in slab continuous casting process[J]. Metallurgical and Materials Transactions B, 1998, 29(6):1345.
[25]	Swaminathan C R, Voller V R. A general enthalpy method for modeling solidification processes[J]. Metallurgical and Materials Transactions B, 1992, 23(5):651.