Functional failure analysis of the graphite crystallizer used in horizontal continuous casting process of copper tube

doi:10.1016/j.engfailanal.2024.108989

IMR OpenIR

	Functional failure analysis of the graphite crystallizer used in horizontal continuous casting process of copper tube
	Li, Hai-Hong 1; Chen, Da-Yong 2; Li, De-Shan 1; Song, Hong-Wu 2; Liu, Jin-Song 3; Liu, Hong-Kou 4; Chen, Yun-Yue 4
通讯作者	Song, Hong-Wu(hwsong@imr.ac.cn)
	2025
发表期刊	ENGINEERING FAILURE ANALYSIS
ISSN	1350-6307
卷号	167 页码:17
摘要	The presence of a particular type of white powder has emerged as a significant challenge in the horizontal continuous casting process of copper. This white powder leads to the blockage of the graphite crystallizer, resulting in a functional failure that adversely affects the mold's lifespan, increases production costs, and reduces overall efficiency. The issue has posed significant challenges for engineers due to its complex and unclear formation mechanism. This investigation employed various experimental characterization methods to analyze the composition, element distribution, phase properties, and other relevant factors of the white powder. Meanwhile, a high- temperature experiment was also designed to examine the potential reactions between copper oxide (Cu2O) and the furnace lining (3Al2O3 & sdot;2SiO2). It is found that the main component of the white powder blocking the inlet hole of the graphite mold is SiO2, which is traced back to the furnace lining. Under high temperatures, oxygen reacts with liquid copper to form Cu2O. Subsequently, this Cu2O reacts with Al2O3 in the furnace lining to produce CuAlO2. Meanwhile, SiO2 becomes isolated as Al2O3 is deprived. The resultant SiO2 accumulates at the inlet hole of the graphite mold due to rapid cooling. The accumulated SiO2 in the form of white powder blocks the inlet hole of the graphite mold, leading to functional failure of the graphite mold. To address this issue, several improvement measures are proposed including drying the raw and protective material, enhancing the sealing of the furnace, and reducing the holding time.
关键词	Horizontal continuous casting Graphite mold Copper tubular billet White powder Functional failure
资助者	Science and Technology Plan Project of Chang Zhou ; Basic Scientific Project of Liaoning Provincial Department of Education ; Changzhou Enreach Copper co., LTD.
DOI	10.1016/j.engfailanal.2024.108989
收录类别	SCI
语种	英语
资助项目	Science and Technology Plan Project of Chang Zhou[CQ20220057] ; Basic Scientific Project of Liaoning Provincial Department of Education[LJKMZ20220591] ; Changzhou Enreach Copper co., LTD.
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Characterization & Testing
WOS记录号	WOS:001344002700001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190952
专题	中国科学院金属研究所
通讯作者	Song, Hong-Wu
作者单位	1.Yantai Univ, Coll Nucl Equipment & Nucl Engn, Yantai 264005, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Liaoning, Peoples R China 4.ChangZhou Enreach Copper CO LTD, Prod & Proc Dept, Changzhou 213149, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Li, Hai-Hong,Chen, Da-Yong,Li, De-Shan,et al. Functional failure analysis of the graphite crystallizer used in horizontal continuous casting process of copper tube[J]. ENGINEERING FAILURE ANALYSIS,2025,167:17.
APA	Li, Hai-Hong.,Chen, Da-Yong.,Li, De-Shan.,Song, Hong-Wu.,Liu, Jin-Song.,...&Chen, Yun-Yue.(2025).Functional failure analysis of the graphite crystallizer used in horizontal continuous casting process of copper tube.ENGINEERING FAILURE ANALYSIS,167,17.
MLA	Li, Hai-Hong,et al."Functional failure analysis of the graphite crystallizer used in horizontal continuous casting process of copper tube".ENGINEERING FAILURE ANALYSIS 167(2025):17.