82B小方坯凝固组织和偏析预测模型开发及应用

doi:10.13228/j.boyuan.issn1005-4006.20220130

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Abstract Based on a domestic factory 82B small billet continuous casting production process, the ProCAST software was used to build 82B small billet slab macrosegregation in cross-section model, the temperature field, shell thickness and solidification organization three aspects to verify the correctness of the model, through the model the continuous casting parameters (casting speed, cooling water flows and superheat) on the cross-section of slab macrosegregation. The simulation results show that the center segregation of 82B continuous casting billet increases with the increase of casting speed and superheat, but the cooling water flows amount has little effect on the center segregation. The key to reduce the carbon segregation in the center of the billet is to control the casting speed and superheat. Therefore, in order to ensure that the carbon segregation in the center of the billet is not more than 1.10, the casting speed should be controlled below 2.64 m/min and the superheat should not be more than 10 ℃.

Key words： high-carbon steel macrosegregation casting speed secondary cooling water flow superheat

Received: 29 July 2022

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	Articles by authors
	LIU Tian
	LI Yao-guang
	SUN Yan-hui
	LI Wen-shuang
	YU Fei

Cite this article:

LIU Tian,LI Yao-guang,SUN Yan-hui等. Development and application of prediction model for solidification structure and segregation of 82B billet[J]. CONTINUOUS CASTING, 2022, 41(6): 8-15.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220130 OR http://www.chinamet.cn/Jweb_lz/EN/Y2022/V41/I6/8

[1]	冯军, 陈伟庆. 国内外高级硬线钢实物质量对比[J]. 中国冶金, 2005, 15(10): 22.
[2]	李伟. 多丝大直径低松弛PC钢绞线[J]. 贵阳:贵州大学, 2006.
[3]	赵子荣, 郝晓帅, 白雪峰, 等. 电弧炉短流程冶炼石油套管钢中夹杂物的演变规律[J]. 中国冶金, 2022, 32(8): 49.
[4]	白雪松, 李曜光, 孙彦辉, 等. C72DA高碳钢小方坯凝固组织模拟[J]. 炼钢, 2020, 36(4): 60.
[5]	张彦辉, 王亚栋, 张立峰, 等. 过热度对高碳钢小方坯宏观偏析影响研究[J]. 钢铁研究学报, 2021, 33(8): 784.
[6]	Choudhary H S K, Ghosh A. Morphology and macrosegregation in continuously cast steel billets[J]. ISIJ International, 1994, 34(4): 21.
[7]	王璐, 孙彦辉, 焦帅, 等. 轴承钢大方坯二次枝晶臂间距数值模拟[J]. 钢铁, 2018, 53(7): 50.
[8]	邬浩天, 孙彦辉, 李曜光, 等. E36船板钢板坯凝固组织模拟研究和应用[J]. 特殊钢, 2021, 42(3): 7.
[9]	王晓连, 王新华, 李林平, 等. 高拉速下板坯连铸结晶器铜板传热行为研究[J]. 炼钢, 2014, 30(3): 54.
[10]	李曜光, 王宏斌, 白雪松, 等. 小方坯结晶器电磁搅拌模拟研究[J]. 钢铁钒钛, 2020, 41(4): 108.
[11]	李曜光. 连铸过程宏观传输现象及中心偏析的模拟研究[D].北京:北京科技大学, 2022.
[12]	Morales R D, López A G, Olivares I M. Heat transfer analysis during water spray cooling of steel rods[J]. ISIJ International, 1990, 30(1): 48.
[13]	李杰, 孙彦辉, 郑京辉, 等. 板坯动态二冷配水控制模型改进和应用[J]. 连铸, 2020 (2): 27.
[14]	WANG Q, ZHANG L. Influence of FC-mold on the full solidification of continuous casting slab[J]. JOM, 2016, 68(8): 2170.
[15]	Marrero J M, Galindo C V, Morales R D, et al. Macro-micro modeling of the dendritic microstructure of steel billets processed by continuous casting[J]. ISIJ International, 1998, 38(8): 812.
[16]	蔡开科. 铸坯质量(第六讲)——连铸坯偏析控制[J]. 连铸, 1994(6): 39.
[17]	汪成义, 孙彦辉, 葛亮, 等. 连铸小方坯综合凝固系数测定及优化实践[J]. 炼钢, 2014, 30(5): 43.
[18]	Pequet C, Rappaz M, Gremaud M. Modeling of microporosity, macroporosity, and pipe-shrinkage formation during the solidification of alloys using a mushy-zone refinement method: Applications to aluminum alloys[J]. Metallurgical and Materials Transactions A, 2002, 33(7): 2095.
[19]	Chen S, Guillemot G, Gandin C A. Three-dimensional cellular automaton-finite element modeling of solidification grain structures for arc-welding processes[J]. Acta Materialia, 2016, 115: 448.
[20]	CHEN H, LONG M, CHEN D, et al. Numerical study on the characteristics of solute distribution and the formation of centerline segregation in continuous casting (CC) slab[J]. International Journal of Heat and Mass Transfer, 2018, 126(A): 49.
[21]	Maidorn C, Blind D. Solidification and segregation in heavy forging ingots[J]. Nuclear Engineering and Design, 1985, 84(2): 285.
[22]	曾亚南, 孙彦辉, 蔡开科. 微合金钢凝固前沿脆性区溶质的偏析特性[J]. 钢铁, 2012, 47(12): 33.
[23]	孙彦辉, 李时伟, 刘凤军,等. 结晶器电磁搅拌对轴承钢大方坯碳偏析的影响[J]. 钢铁钒钛, 2013, 34(3): 72.
[24]	WANG Y, ZHANG L, ZHANG H, et al. Mechanism and control of sulfide inclusion accumulation in CET zone of 37Mn5 round billet[J]. Metallurgical and Materials Transactions, 2017, 48(2): 1004.
[25]	周伟基,沙玉峰,路辉,等. GCr15连铸大方坯凝固终点及末端的大压下区间[J]. 钢铁, 2018, 53(1): 41.
[26]	吴清明,许伟阳,颜慧成,等. 20CrMnTiH齿轮钢大方坯轧制圆钢宏观碳偏析控制[J]. 钢铁, 2012, 47(5): 23.
[27]	马建民. 80号钢连铸坯末端电磁搅拌优化与实践[J]. 中国冶金, 2021, 31(2): 72.
[28]	杨文, 张彦辉, 张立峰, 等. 硬线钢拉拔断裂机理及连铸工艺优化[J]. 钢铁, 2021, 56(9): 74.
[29]	陈希青, 肖红, 王璞, 等. 双通道感应加热中间包的三维磁流热耦合模型[J]. 钢铁, 2021, 56(6): 48.
[30]	马钰, 唐海燕, 张硕, 等. 通道式感应加热五流中间包流场的水力学模拟[J]. 钢铁, 2020, 55(11): 57.
[31]	张杰, 郑淑国, 朱苗勇. 加热功率对感应加热中间包影响的数值模拟[J]. 中国冶金, 2021, 31(10): 68.