低碳钢连铸轻压下工艺的技术研发和应用

doi:10.13228/j.boyuan.issn1005-4006.20220097

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (2231 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract By establishing two-dimensional transient heat transfer and solidification model for continuous casting of 160 mm×160 mm square billet QD08, the slab temperature and slab solidification rate at each roll position were calculated, and the effects of reduction and position on the macrostructure quality of billet longitudinal section were studied. The results indicated, compared with the central solid rate, low carbon steel is more suitable for characterizing the soft reduction position and adjusting the reduction process with solidification rate. The billet central quality was best reduced in 0.961-1.000 solidification range. Shrinkage cavity existed in the center of the billet reduced in 0.986-1.000 solidification range.Certer cracks existed when soft reduction was carried out in 0.931-0.961 solidification range. Cracks occuried more eassily at high casting speed under the same reduction proccess. Less reduction quantity significantly decreased the center cracks.

Key words： numerical simulation soft reduction QD08 shrinkage cavity solidification rate

Received: 31 May 2022

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LI Da-ming
	LIN Jun
	HE Jia-jia
	DENG Xiang-yang
	WU Wei
	PANG Zhuo-chun

Cite this article:

LI Da-ming,LIN Jun,HE Jia-jia等. Development practice of the soft reduction process in mild steel con-casting[J]. CONTINUOUS CASTING, 2023, 42(2): 52-56.

URL:

http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220097 OR http://www.chinamet.cn/Jweb_lz/EN/Y2023/V42/I2/52

[1]	吴晨辉, 李阳, 谢鑫, 等. 板坯连铸过程凝固传热数值计算与工艺优化[J]. 中国冶金, 2022, 32(3): 92.
[2]	祁猛, 李亮, 铁占鹏, 等. 轻压下对GCr15轴承钢大方坯内部质量的影响[J]. 中国冶金, 2020, 30(9): 67.
[3]	郭东伟, 侯自兵, 郭坤辉, 等. 连铸方坯中心线凝固行为波动现象及变化规律[J]. 钢铁, 2023, 58(1): 78.
[4]	彭治强, 曹江海, 侯自兵. 基于高通量试验原理82B连铸坯组织形貌特征[J]. 钢铁, 2021, 56(7): 86.
[5]	祭程, 朱苗勇, 陈永,等. 大方坯连铸动态轻压下控制模型的开发与应用[J]. 钢铁, 2009, 44(9):4.
[6]	周蕾, 魏刚武, 高延详,等. 30MnVS非调质钢的开发[J]. 钢铁, 2017, 52(3):6.
[7]	田新中, 朱荣. GCr15轴承钢大方坯连铸生产中动态轻压下工艺的应用[J]. 钢铁,2010,31(6):26.
[8]	赵乾, 朱伏先, 崔凤平,等. 轧制工艺对铸坯缩孔焊合行为的影响[J]. 塑性工程学报,2007,14(2):47.
[9]	王进建, 陈润农, 胡惠超, 等. 铝对4Cr1.5 Ni耐候钢组织和耐候性的影响[J]. 钢铁, 2023, 58(2): 126.
[10]	陈固军, 杨江, 李龙, 等. 超低碳钢RH混合喷吹Ar-CO2冶金反应特性[J]. 钢铁, 2022, 57(3): 55.
[11]	李志峰, 贺帅, 邢淑清, 等. 铬元素添加对热轧低碳钢高温氧化行为的影响[J]. 钢铁, 2021, 56(9): 110.
[12]	张剑君, 王子超, 刘青, 等. 水口结构对薄板坯初始凝固行为的影响[J]. 连铸, 2023(1): 82.
[13]	朱苗勇, 娄文涛, 王卫领. 炼钢与连铸过程数值模拟研究进展[J]. 金属学报,2018,54(2):131.
[14]	岳留振, 倪锋, 张永振. 热型连铸工艺参数的数值分析[J]. 铸造,2005,54(6):5.
[15]	SAVAGE B J,PRITCHARD W H. The problem of rupture of the billet in the contimuous casting of steel[J]. Iron and Steel Institute, 1954, 178:269.
[16]	SUZUKI K,TAKAHASHI K,NISHI T, et al. Mechanical properties of the slabbing mill roll materials at room and elevated temperatures[J]. Tetsu-to-Hagane, 2010, 61(3):371.
[17]	于勇. 现代连续铸钢实用手册[M]. 北京:冶金工业出版社, 2010.
[18]	李东辉, 邱以清, 刘相华. 模拟连铸过程的数学模型[J]. 钢铁研究, 2004, 32(5):5.
[19]	许志刚, 王新华, 周力,等. 轻压下参数对连铸板坯半宏观偏析的影响[J]. 钢铁, 2014, 49(3):7.
[20]	谢长川, 张炯明, 王新华,等. 动态轻压下技术的研发及运用, 2009, 44(12):5.
[21]	刘添, 李曜光, 孙彦辉, 等. 82B小方坯凝固组织和偏析预测模型开发及应用[J]. 连铸, 2022(6): 8.
[22]	韩志伟, 陈登福. 连铸坯坯壳厚度的射钉测试及凝固系数的修正[J]. 重庆大学学报, 2011, 34(5):47.
[23]	王社教. Q345E钢ø600 mm大圆坯生产工艺及质量控制研究[D]. 武汉:武汉科技大学, 2015.
[24]	饶金元, 张猛昀, 陈君,等. 轻压下改善42CrMo钢300 mm×400 mm大方坯内部质量的工艺实践[J]. 特殊钢,2022,43(1):39.
[25]	沈建国, 王迎春. 大方坯连铸内部缺陷与轻压下工艺研究[J]. 铸造技术, 2012, 33(3):4.
[26]	王博, 张炯明, 肖超,等. 连铸板坯轻压下过程中间裂纹产生机理[J]. 工程科学学报,2016,38(3):351.
[27]	储鸿文, 留津津, 金进文,等. 45钢连铸矩形坯中心疏松和缩孔的研究[J]. 炼钢, 2011, 27(3):60.