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Tools for continuous improvement of the plate quenching process*

  • A. Fall (a1), M. C. Regnier (a1), P.-S. Manga (a1), C. Ramassamy (a1), E. Tonnon (a1), C. Romberger (a2) and J. Xiao Yuefa (a2)...

Abstract

Over the past few years several technical efforts have been focused on continuous improvement of quench and tempered product at ArcelorMittal Burns Harbor plate mill facility with particular attention being given to optimization of the flatness of quenched product. Incremental improvement in quench line equipment and practices is being aided by computer-based modelling tools and specialized instrumentation. The paper describes the development of different tools used to control flatness after quench and tempering units. The detailed description of a 3D model designed to predict distortion such as edge waves, center buckles, longbows and crossbows during quenching is presented. The model developed with Abaqus is able to predict the evolution of plate temperature, thermal stresses, strains, and distortions during cooling. The water cooling system is represented by top and bottom movable surfaces where a heat flux depending on width, length and temperature is applied. The effect of phase transformation is approximated by a variation of the plate thermal expansion coefficient.

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[1] F. Abdou, R.M. Christine, M. Pierre-Stephane, L. Thibault, R. Charles, A 3D thermo-mechanical model developed to study plate distortion during water cooling No. 27 The 10th International Conference on Steel Rolling September 15-17, 2010
[2] D.P. DeWitt, Fundamentals of Heat and Mass Transfer, 5th Edition, pp. 620-690
[3] Fujibayashi Akio, Omata Kazuo, JFE Steel’s Advanced Manufacturing Technologies for High Performance Steel Plates, Jfe Technical Report No.5
[4]Colas, R., Leduc, L.A, Neri, M.A., Iron making and Steelmaking 310 (2004) 94
[5] J.-L. Borean, C. Romberger, P.-S. Manga, T. Petesch, A. Daubign, Thermal modeling of the quench at Burns Harbor utilizing on-line characterization of cooling, International Symposium on the Recent Developments in Plate Steels 19-22 Jun 2011 Winter Park Mountain Lodge, Winter Park, Colorado
[6]Shi-Chin Wang, Fon-Jen Chiu, Tsan-Ying Ho (China Steel Corporation, Kao-hsiung, Taiwan), Characteristics and prevention of the thermo mechanical controlled process plate deflection resulting from uneven cooling, the Institute of Materials, 1996

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Tools for continuous improvement of the plate quenching process*

  • A. Fall (a1), M. C. Regnier (a1), P.-S. Manga (a1), C. Ramassamy (a1), E. Tonnon (a1), C. Romberger (a2) and J. Xiao Yuefa (a2)...

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