1 School of Minerals Processing and Bioengineering, Central South University, Changsha 410083; 2 College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004
Abstract: Amathematical model for solidification heat transfer of HRB500E continuous casting billet with nitrogen alloying was established, and differen-tial equation of heat transfer was solved by finite difference method. The numerical simulation and calculation upon solidification heat transfer of the billet were conducted by Matlab software. In addition, the irrationality of the original cooling system was analyzed, and the optimization was carried out based on the relevant metallurgical criteria. By applying regression analysis, the dynamic relation for the water distribution among each cooling zone after optimization was determined. The research showed that the original water distribution scheme involves excessive cooling intensity, which makes the billets prone to cracking and porosity. And the optimized water distribution scheme have a cooling water flow for crystallizer lowered by 15%—20%, a cooling water flow for 0 and 1 sections lowered by 4%—15%, and a cooling water flow for 2 and 3 sections lowered by 30%—55%, compared to the original scheme. The practical casting guided by the optimized cooling scheme was carried out, and the considerably improved quality of the resultant billet validated the effectiveness of the model and the reliability of the optimization method: no crack was observed at the corner, the edge and the center of the billets, and the segregation and porosity were within 1.5 grades. The dynamic water distribution formula agreed well with the cooling water meter, which is instructive to the continuous casting of nitrogen-alloyed HRB500E.
吴光亮, 武尚文, 张永集, 孟征兵. 氮合金化HRB500E钢筋连铸传热过程模拟及配水工艺优化[J]. 材料导报, 2019, 33(5): 731-738.
WU Guangliang, WU Shangwen, ZHANG Yongji, MENG Zhengbing. Simulation of Heat Transfer Process and Optimization of Water Distribution Process in Continuous Casting of Nitrogen-alloyed HRB500E Steel. Materials Reports, 2019, 33(5): 731-738.
1 Hwang B, Shim J H, Lee M G, et al. Journal of the Korean Institute of Metals and Materials,2016,54(12),862. 2 Jiang H, Li Q, Jiang W, et al. Steel & Composite Structures,2016,21(2),343. 3 Yang Yuqing, Wang Qingjuan, Du Zhongze, et al. Materials Review A: Review Papers,2015,29(10),101(in Chinese). 杨雨晴,王庆娟,杜忠泽,等.材料导报:综述篇,2015,29(10),101. 4 Bai Ligeng, Liu Weiya. Building Structure,2016(12),49(in Chinese). 白力更,刘维亚.建筑结构,2016(12),49. 5 Lin Xiqiang, Huo Liang, Zhang Tao, et al. Building Science,2015,31(7),103(in Chinese). 蔺喜强,霍亮,张涛,等.建筑科学,2015,31(7),103. 6 Paul S K, Rana P K, Das D, et al. Construction & Building Materials,2015,54(11),170. 7 Chen W, Shi Z, Zhao Y. Hot Working Technology,2010,39(4),35. 8 Su Candong, Chen Wei, Chen Bisheng. Iron Steel Vanadium Titanium,2012,33(1),70(in Chinese). 苏灿东,陈伟,陈必胜.钢铁钒钛,2012,33(1),70. 9 Zhong Zhonghua, Cao Jianchun, Zhou Xiaolong, et al. Transactions of Materials and Heat Treatment,2015,36(2),108(in Chinese). 钟仲华,曹建春,周晓龙,等.材料热处理学报,2015,36(2),108. 10 Chen Dengfu, Yan Guangting, Liu Renda. Journal of Chongqing University(Natural Science Edition),1994,17(1),112(in Chinese). 陈登福,颜广庭,刘人达.重庆大学学报:自然科学版,1994,17(1),112. 11 Heidt V, Jeschar R. Steel Research,1993,64(3),157. 12 Li C, Thomas B G. Metallurgical & Materials Transactions B,2004,35(6),1151. 13 Heidt V, Jeschar R. Steel Research,1993,64(3):157. 14 Zhu Liguang, Zhou Jianhong, Wang Shuoming, et al. Steelmaking,2006,22(2),34(in Chinese). 朱立光,周建宏,王硕明,等.炼钢,2006,22(2),34. 15 Schrewe H F. Continuous casting of steel : fundamental principles and practice,Stahleisen,1989. 16 Mintz B, Yue S, Jonas J J.International Materials Reviews,1991,55(3),168.
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2019, Vol. 33 
