Abstract
A new quasi-steady state hot plate method has been proposed to measure heat flux across a sheet sample such as mould flux film, finally to determine its apparent thermal conductivity via Fourier’s equation. The heat flux across the sheet sample is derived from the volume change caused by melting of ice utilizing a modified Bunsen Ice Calorimeter. This measurement method was applied to Ni-base super alloy (Inconel 600), alumina and PTFE (Teflon) with known thermal conductivity values to confirm the reliability of this new method. The experimental thermal conductivity values obtained were in good agreement with the respective reported values. Measurements were also conducted on sheet silica glasses which sized 20 × 20 × 0.5 mm3 and 20 × 20 × 1.0 mm3, and produced a value of 1.34 ± 0.03 Wm -1K-1 at 293 K − 303 K under a temperature gradient of 20 Kmm-1, which value is reasonable compared with the reported one. In addition, a process simulation has been applied to confirm the applicability of the present method to mould flux used in continuous casting under a steep temperature gradient at high temperature.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
K. Nakai, T. Sakasita, M. Hashio, M. Kawasaki, K. Nakajima and Y. Sugitani,“Effect of Mild Cooling in Mould upon Solidified Sheel Formation of Continuously Cast Slab,” Tetsu-to-Hagane, 73 (1987), 498.
K. Kinoshita, H. Kitaoka and T. Emi,“Influence of Casting Conditions on the Solidificaion of Steel Melt in Continuous Casting Mold,” Tetsu-to-Hagane, 67 (1981), 93.
H. Nakada, M. Susa, Y Seko, M. Hayashi and K. Nagata,“Mechanism of Heat Transfer Reduction by Crystallization of Mold Flux for Continuous Casting,” ISIJ Int., 48 (2008), 446.
A. Yamauchi, K. Sorimachi, T. Sakuraya and T. Fujii,“Heat Transfer between Mold and Strand through Mold Flux Film in Continuous Casting of Steel,” ISIJInt., 33 (1993), 140.
S. Ozawa, M. Susa, T. Goto, R. Endo and K. C. Mills,“Lattice and Radiation Conductivities for Mould Fluxes From the Perspective of Degree of Crystallinity,” ISIJInt., 46 (2006), 413.
R. Bunsen,“Calorimetric Researches,” Phil. Mag., 41 (1871), 161.
R. S. Jessup,“A New Bunsen-Type Calorimeter,” J.Res. Nat. Bur. Stand., 55 (1955), 317.
M. Li, R. Endo, L. Wang, L. Li and M. Susa,“A New Method for Apparent Thermal Conductivity Determination for Sheet Samples Utilizing Principle of Bunsen Ice Calorimeter,” ISIJ Int., 56 (2016), 366.
Japan Society of Thermophysical Properties: Thermophysical Properties Handbook (Tokyo, NY: Yokendo, 2008), 210.
COMSOL AB: COMSOL Multiphysics Modelling Guide Version 3.5a (Stockholm, NY: COMSOL AB, 2007).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 TMS (The Minerals, Metals & Materials Society)
About this paper
Cite this paper
Li, M., Endo, R., Wang, L.J., Susa, M. (2016). A New Method for Apparent Thermal Conductivity Measurement of Mould Flux. In: Reddy, R.G., Chaubal, P., Pistorius, P.C., Pal, U. (eds) Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-48769-4_50
Download citation
DOI: https://doi.org/10.1007/978-3-319-48769-4_50
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48625-3
Online ISBN: 978-3-319-48769-4
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)