Abstract
Microstructure evolution, dynamic recrystalization, high temperature oxidation and hot ductility of 1.4% Si non-oriented electrical steel sheets were investigated to reduce edge cracking. The causes of cracking were found to be coarse as-cast microstructure, grain boundary oxidation in reheating furnace, lack of dynamic recrystalization during hot rolling and increase of temperature, resulting in reduced hot ductility in strip edge region. Countermeasures against the edge crack are proposed accordingly. Lowering reheating temperature and reducing holding time reduced oxidation and decarburization. Hot charging temperature was increased to decrease reheating temperature. And using an edger can refine microstructure in strip edge region. Finaly, edge heater can be added to increase edge region formability by inducing dynamic recrystalization and ductility by increasing temperature.
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B. Hwang, H. S. Lee, Y. G. Kim, S. Lee, Mater. Sci. Eng. A 402 (2005) 177-187.
F. Czerwinski, A. Brodtka, J. Y. Cho, A. ZielinskaLipiec, J. H. Sunwoo, J. A. Szpunar, Scripta Mater. 37 (1997) 1231-1235.
D. F. Zhang, Q. W. Dai, L. Fang, X. X. Xu, Trans. Nonferrous Met. Soc. China 21 (2011) 1112-1117.
P. F. Thomson, N. M. Burman, Mater. Sci. Eng. 45 (1980) 95-107.
M. H. Han, S. Lee, N. J. Kim, K. J. Lee, T. Chung, G. Byun, Mater. Sci. Eng. A 264 (1999) 47-59.
M. Shiozaku, M. Okamoto, K. Tanaka, T. Shimazu, Method for Preventing the Edge Crack in a Grain Oriented Silicon Steel Sheet Produced from a Continuous Cast Steel Slab, US, 4204891, 1980-5-27.
A. Gitins, J. Aust. Inst Met. 20 (1975) 184–200.
J. A. Schey, J. Inst. Met. 94 (1966) 193–200.
M. F. Litmann, Metal. Mater Trans. A6 (1975) 1041–1048
H. C. Fiedler, J. Appl. Phys. 53 (1982) 8302–8304.
S. Inoguchi, S. Ikeda, Production of Grain-oriented Silicon Steel Sheet Having Excelent Surface Characteristic and Magnetic Characteristic, Japan, 59–219412, 1984-12-10.
J. D. Verhoeven, Fundamentals of Physical Metalurgy, Wiley, New York, 1975.
Y. D. Xiao, M. Li, W. Wang, J. Zhou, G. L. Wu, Y. M. Peng, J. Cent. South Univ. Tech. 16 (2009) 25–31.
P. Brissonneau, J. Magn. Magn. Mater. 41 (1984) 38–46.
R. Bürger, G. Lehmann, W. Lindner, J. Weieting, Non-oriented Electrical Strip and Process for Its Production, US, 5258080, 1993-11-02.
M. T. Kim, J. S. Jung, Surf. Coat. Technol. 161 (2002) 218–223.
T. Ishitsuka, Y. Inoue, H. Ogawa, Oxid. Met. 61 (2004) 125–142.
H. R. Jiang, Z. L. Wang, W. S. Ma, X. R. Feng, Z. Q. Dong, L. Zhang, Y. Liu, Trans. Nonferrous Met. Soc. China 18 (2008) 512–517.
E. O. Garcia-Sanchez, E. A. Trevino-Luna, A. Salinas-Rodriguez, L. A. Leduc-Lezama, Recista de Metalurgia 43 (2007) 266–271.
T. L. Baum, R. J. Fruehan, S. Sridhar, Metal. Mater. Trans B 38 (2007) 287–297.
Y. J. Jang, S. W. Kim, International Journal of Control, Automation, and Systems 5 (2007) 43–50.
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Chen, Ah., GUO, Hr., Li, Hl. et al. Formation of Edge Crack in 1.4%Si Non-oriented Electrical Steel during Hot Rolling. J. Iron Steel Res. Int. 21, 269–274 (2014). https://doi.org/10.1016/S1006-706X(14)60041-8
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DOI: https://doi.org/10.1016/S1006-706X(14)60041-8