Abstract
Because of the effect of silicon on the formation of oxide scale, black strip defect is common on the surface of compact strip production (CSP) hot-rolled silicon steel, which leads to difficulty in pickling process compared with plain carbon steels. Although high-temperature oxidation of Fe-Si alloy has been discussed a lot, few studies have explained the mechanism of black strip defect generated on the surface of hot-rolled silicon steel and proposed means to prevent it effectively. Thermogravimetric analyzer (TGA) is used to simulate oxidation of Fe-2.2Si alloy for 30 min under air condition, and temperature range is from 1000 to 1150 °C. Effect of rolling deformation on scale morphology is also discussed. Electron probe microanalysis (EPMA) is used to analyze cross-sectional morphology and elemental distribution of the oxide scale. Schematic diagram of formation of black strip defect is obtained, which helps to provide theoretic basis for proposing of solutions for the problem. It is proposed that lowering furnace temperature and shortening time to stay at high temperature condition after rolling will be helpful to relieve the black strip problem.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Yang Yu-ling, Yang Cheng-hsien, Lin Szu-ning, et al. Efects of Si and Its Contenton the Scale Formation on HotRoled Steel Strips [J]. Materials Chemistry and Physics, 2008, 112(2): 566.
Yang Cheng-hsien, Lin Szu-ning, Chen Chih-hsiung, et al. Efects of Temperature and Straining on the Oxidation Behavior of Electrical Steels [J]. Oxid Met, 2009, 72(3/4): 145.
Kusabiraki Kiyoshi, Watanabe Ryoko, Ikehata Tomoharu, et al. High-Temperature Oxidation Behavior and Scale Morpholo gy of SiContaining Steels [J]. ISIJ International, 2007, 4G(9): 13G.
Suarez L, Schneider J, Houbaert Y van. High-Temperature Ox idation of Fe-Si Aloys in the Temperature Range 900–1250 Degrees C [C]// Department of Materials Science and Engineering. Difusion in Solids and Liquids I. Zurich: Trans Tech Publications, 2008, 273–276: 661.
Logani R, SMELTZER W W. Kinetics and WustiteFaylite Scale Formation on Iron-Silicon Aloys [J]. Oxid Met, 1969, 1(1): 3.
Lucía Suárez, Pablo Rodríguez-Calvilo, Yvan Houbaert, et al. Oxidation of Ultra Low Carbon and Silicon Bearing Steels [J]. Corrosion Science, 2010, 52(6): 2044.
Fukagawa Tomoki, Okada Hikaru, Maehara Yasuhiro. Mechanism of Red Scale Defect Formation in Si-Added Hot-Roled Steel Sheets [J]. ISIJ International, 1994, 4(11): 906.
Okada Hikaru, Fukagawa Tomoki, Ishihara Haruhiko. Prevention of Red Scale Formation During Hot Roling of Steels [J]. ISIJ International, 1995, 35(9): 886.
Chen R Y, Yuen W Y D. Examination ofOxide Scales of Hot Roled Steel Products [J]. ISIJ International, 2005, 45(1): 52.
Neil Berks, Gerale H Meier, Fred S Petit. Introduction to the High-Temperature Oxidation of Metals [M]. 2nd ed. UK: Cambridge University Press, 2006.
Chen R Y, Yuen W Y D. Review of the High-Temperature Oxidation of Iron and Carbon Steels in Air or Oxygen [J]. Oxid Met, 2003, 59(5/6): 433.
Author information
Authors and Affiliations
Corresponding author
Additional information
Foundation Item: Item Sponsored by National High-Tech Research and Development Program (863 Program) of China (2011BAE13B04); Fundamental Research Funds for Central Universities of China (N100307006)
Rights and permissions
About this article
Cite this article
Liu, Xj., Cao, Gm., Nie, Dm. et al. Mechanism of Black Strips Generated on Surface of CSP Hot-Rolled Silicon Steel. J. Iron Steel Res. Int. 20, 54–59 (2013). https://doi.org/10.1016/S1006-706X(13)60141-7
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1016/S1006-706X(13)60141-7