|
|
A review of research on central crack in continuous casting strand |
Yong-kun Yang1, Jia-yu Zhu1, Wei-an Wang1, Yang Wang1, Jian-li Wang1, Guan-jie Wang1, Xiao-ming Li1 |
1 School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, Shaanxi, China |
|
|
Abstract Central crack is a common quality defect in continuous casting strand, which is difficult to fully weld in the rolling and forging processes, and has become a key technical problem that restricts the stable production of high-end alloy rod/forging/pipe. In recent years, the central crack control has been one of the main focuses in high quality steel research. In order to fully understand the central crack, the research status of central crack characteristics, formation mechanism, influencing factors, and control methods in the world was reviewed. The deficiencies in the research of the central crack and the key research directions in the future were pointed out, which will provide references for other scholars in this field of research. It is found that alloying elements segregation during solidification and inclusions precipitated at grain boundaries are the main reasons for the central crack formation, while the unreasonable application of production processes can also induce the initiation of central crack. The optimization of alloying element composition and production process is helpful to reduce the initiation of central cracks. In addition, the quantitative characterization mechanism based on steel grades, temperature, stress, and other factors induced central crack should be established in the further study, forming a systematic quantitative determination criterion and control strategy for coupling the composition, process and thermal/ mechanical characteristic.
|
|
|
|
|
Cite this article: |
Yong-kun Yang,Jia-yu Zhu,Wei-an Wang, et al. A review of research on central crack in continuous casting strand[J]. Journal of Iron and Steel Research International, 2023, 30(6): 1073-1089.
|
|
|
|
[1] |
Tao Peng, Bin Yang, Gang Yang, Lu Wang, Zhi-hua Gong. Microstructural change and stress rupture property of Nimonic 105 superalloy for advanced ultra-supercritical power plants[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2021, 28(7): 842-852. |
[2] |
Jia‑long Qiao, Fei‑hu Guo, Sheng‑tao Qiu, Xing‑zhong Zhang, Hai‑jun Wang. Formation mechanism of surface oxide layer of grain-oriented silicon steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2021, 28(03): 327-334. |
[3] |
J. Chen, Y. Zhang, J.J. Wang, C.M. Liu, S.X. Zhao. Multistage serrated flow behavior of a medium-manganese high-carbon steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(9): 1064-1072. |
[4] |
Gui-quan Wang, Xiang Chen, Yan-xiang Li, Yuan Liu, Hua-wei Zhang, Zhong-li Liu. Effects of alloying elements on thermal conductivity of pearlitic gray cast iron[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2019, 26(9): 1022-1030. |
[5] |
Hai-chen Wu, Xiao-fang Bi. Characterization of thermal-induced distorted face-centered cubic structure in pure titanium[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2019, 26(6): 653-658. |
[6] |
Hai-yan Tang*,Yong Wang,Guang-hui Wu,Peng Lan,Jia-quan Zhang. Inclusion evolution in 50CrVA spring steel by optimization of refining slag[J]. Chinese Journal of Iron and Steel, 2017, 24(9): 879-887. |
|
|
|
|