Analysis on Initial Defects Based on Mechanical State of Meniscus Shell

Xiangning MENG,Rengan LIN,Jie YANG,Xiaojing ZUO,Miaoyong ZHU

Journal of Iron and Steel Research International ›› 2015, Vol. 22 ›› Issue (12) : 1085-1090.

PDF(785 KB)
Welcome to visit Journal of Iron and Steel Research International, July 30, 2025
PDF(785 KB)
Journal of Iron and Steel Research International ›› 2015, Vol. 22 ›› Issue (12) : 1085-1090.
Metallurgy and Metal Working

Analysis on Initial Defects Based on Mechanical State of Meniscus Shell

Author information +
History +

Abstract

The meniscus shell plays an important role in slab quality and process operation for continuously cast steel. One decisive reason is initial solidifying shell and growing dendrite under the mechanical stress caused by mold oscillation and liquid steel flow to generate disturbance of casting. The mechanical state of meniscus shell was analyzed using mathematical models in combination with thermophysical properties and flow rate of steel to shed light on the formation of initial defects. The results show that the mold oscillation is a critical factor on the initial crack formation because the periodic stress makes the shell bending. The formed crack may also expand and propagate due to the following secondary cooling and straightening behavior. The primary dendrite has high possibility to be broken by fluid flow in the solidification front to lead to the nonuniform thickness of solidifying shell. The interdendrite bridging is also likely to be formed to produce other internal defects, such as air hole and solute enrichment in the residual molten steel located in the bridging area.

Key words

continuous casting, mold oscillation, meniscus shell, initial defects, mathematical model

Cite this article

Download Citations
LIN Ren-Gan, YANG Jie, ZUO Xiao-Jing, et al. Analysis on Initial Defects Based on Mechanical State of Meniscus Shell[J]. Journal of Iron and Steel Research International, 2015, 22(12): 1085-1090

References

[1]J.Konishi,M.Militzer,J. K. Brimacombe,I. V. Samarasekera.[J].Metall. Mater. Trans. B, 2002, 33(3):413-423
[2]J.K. Brimacombe,K.Sorimachi.[J].Metall. Trans. B, 1977, 8(2):489-505
[3]M.Suzuki,H.Mizukami,T. Kitagawa,K. Kawakami,S. Uchida,Y. Komatsu.[J].ISIJ Int., 1991, 31(3):254-261
[4]W.Yan,W.Q. Chen,C. Lippold,H. C. Xu.[J].Metall. Mater. Trans. B, 2013, 44(6):1466-1477
[5]M.O. El-Bealy[J].Metall. Mater. Trans. B, 2014, 45(3):988-1017
[6]S.Harada,S.Tanaka,H. Misumi,S. Mizoguchi,H. Horiguchi.[J].ISIJ Int., 1990, 30(4):310-316
[7]S.D. Chen,Z.F. Hu,Y. Y. Yuan,Y. Z. Luo.[J].J. Iron Steel Res. Int., 2011, 18(Suppl. 2):383-388
[8]N.B. Ma,Z.S. Lei,X. L. Jin,G. H. Cao,Y. B. Zhong,Z. M. Ren.[J].Acta Metall. Sin., 2008, 44(8):1019-1024
[9]B.Zhang,Z.L. Xue,Z. Liao,S. D. Wang,H. W. Zheng,J. F. Zhou.[J].J. Iron Steel Res. Int., 2014, 21(Suppl. 1):108-112
[10]X.Z. Na,X.G. Wang,X. Z. Zhang,Y. Gan.[J].J. Iron Steel Res., 2005, 17(5):31-34
[11]X.N. Meng,M.Y. Zhu.[J].Can. Metall. Q., 2011, 50(1):45-53
[12]J.Yang,X.N. Meng,M. Y. Zhu.[J].Steel Res. Int., 2014, 85(4):710-717
[13]J.Pilling,A.Hellawell.[J].Metall. Mater. Trans. A, 1996, 27(1):229-232
[14]M.Y. Zhu.Modern Metallurgical Technology[M].Metallurgical Industry Press, 2011, :-
[15]J.J. Bikerman.Physical Surface[M].Academic Press, 1970, :-
[16]X.N. Meng,M.Y. Zhu,N. L. Chen.[J].Acta Metall. Sin., 2007, 43(8):839-846
[17]X.N. Meng,M.Y. Zhu.[J].J. Iron Steel Res. Int., 2008, 15(Suppl. 1):510-516
[18]T.W. Clyne,M.Wolf,W. Kurz.[J].Metall. Mater. Trans. B, 1982, 13(2):259-266
[19]G.J. Davies, Y. K. Shin.Solidification Technology in the Foundry and Cast House[M].The Metal Society, 1979, :-
[20]T.Matsumiya,T.Saeki,J. Tanaka,T. Ariyoshi.[J].Tetsu-to-Hagan, 1982, 68(1982):108-117
[21]M.Suzuki,M.Suzuki,C. Yu,T. Emi.[J].ISIJ Int., 1997, 37(4):375-382
[22]E.D. Nijs, G. Coombes, T. Kuroda.InSteelCon 2011 Proceedings[A].Steel Institute VDEh Press, 2011, :-
[23]F.J. Ma,G.H. Wen,G. Li.[J].Res. Iron Steel, 2000, 1(2000):11-14
[24]B.Mao, G. F. Zhang, A. W. Li.Theories and Techniques of Electromagnetic Stirring in Continuous Steel Casting[M].Metallurgical Industry Press, 2012, :-
[25]H.Mizukami,A.Yamanaka.[J].ISIJ Int., 2010, 50(3):435-444

Funding

National Natural Science Foundation of China;Fundamental Research Funds for the Central Universities of China;National Outstanding Young Scientist Foundation of China
PDF(785 KB)

8

Accesses

0

Citation

Detail

Sections
Recommended

/