Study on Non-Isothermal Crystallization Kinetic of Tundish Covering Fluxes

Abstract:

Basic tundish covering flux is widely used in continuous casting production of high quality steel because of good heat insulation function and the properties of absorbing inclusions. However, there is a serious problem of incrustation caused by basic tundish covering flux in process of pouring and it could be dramatically influenced by the crystallization behaviors of covering flux. In the paper, the crystallization time and ratio of basic tundish covering fluxes were investigated by high temperature electrical resistance furnace and single hot thermocouple apparatus. Based on the crystallization kinetic knowledge and experimental results, Avrami equation was modified, the non-isothermal crystallization equation that could quantitatively describe the crystallization behaviors of basic tundish covering fluxes was established.

• Periodical: Advanced Materials Research (Volume 266)
• Pages: 102-105
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.266.102
• Online since: June 2011
• Authors: Li Feng Sun, Hong Po Wang, Chun Lai Liu, Yong Zou, Mao Fa Jiang
• Keywords: Avrami Equation, Basic Tundish Covering Fluxes, Crystallization Kinetic Equation, Non-Isothermal

References

[1] L. Sun: Hebei Metallurgy Vol. (1992), p.5 (in Chinese).

[2] P.V. Ribound, M. Larrecq: Steelmaking Proceedings. Vol. 69(1979), p.78.

[3] C. Zhun, C. Liu and D. Wang: J. Northeastern Uni. (Natural Science) Vol. 25(2004), p.988 (in Chinese).

[4] L. Sun, Z. Song: Special Steel Vol. 28(2007), p.34 (in Chinese).

[5] Y. He, Y. Lnoue: Bio. Vol. 46(2003), p.1865.

[6] Z. Mo: Acta Polym. Sin. Vol. (2008), p.656 (in Chinese).

[7] L. Tan, J. Hou and W. Yang: Plastic Vol. 33 (2004), p.65 (in Chinese).

[8] M. Ma, W. Ni: J. Chin. Ceram. Soc. Vol. 37(2009), p.609 (in Chinese).