Heat Transfer Model of Roller Quench in Strip Continuous Heat Treatment Process

Abstract:

Roller quench is a rapid cooling technique used in strip continuous heat-treatment process, which is one of the most important processes in producing cold-rolled strip steel. Heat transports by contact heat transfer in roller quench, for the complex characteristics of contact heat transfer, roller quench is very difficulty to simulate. In this paper a roller quench heat transfer model is build based on Fourier-Kirchhoff differential equations. A new correlation function of contact conductance is developed from statistical mechanics model results by least square method. This correlation function solves the heat transfer boundary condition in contact region between strip and roller. In this model the contact radiation is also considered. The roller quench model predicts the heat transfer characteristics of roller quench. The model is useful for the designing and controlling of the roller quench system.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 536-543
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.536
• Online since: November 2010
• Authors: Rui Feng Dou, Zhi Wen, Xun Liang Liu, Guo Feng Lou
• Keywords: Contact Heat Transfer, Modeling, Roller Quench, Strip Continuous Heat Treatment Process

References

[1] Zhengdong Liu. Experiments and mathematical modelling of controlled runout table cooling in a hot rolling mill. Ph.D. thesis, The University of British Columbia, 2001. 4.

[2] Liu An, Li Jun. Development of continuous annealing technology in cold rolling sheet. Steel Rolling, 1997, (4): 64-69.

[3] Shuzo Fukuda, Naotake Yoshihara, Yutaka Ohkubo, et al. Heat transfer analysis of roller quench system in continuous annealing line. Transactions ISIJ, 1984, 24: 734-741.

DOI: 10.2355/isijinternational1966.24.734

[4] M. Leung, C. K. Hsieh, D. Y. Goswami. Prediction of thermal contact conductance in vacuum by statistical mechanics[J]. Journal of Heat Transfer, 1998, 120(2): 51～57.

DOI: 10.1115/1.2830064

[5] Dou Rui-feng, Wen Zhi, Su Fu-yong. Mathematical model and analysis of contact heat transfer with radiation. Journal of University of Science and Technology Beijing, 2009, 31(10): 1328-1333.

[6] C.V. Madhusudana. Thermal contact conductance[M]. Mechanical engineering series, New York Berlin Heidelberg, Springer-Verlag, (1996).

[7] M. Rosochowska, K. Chodnikiewicz, R. Balendra. A new method of measuring thermal contact conductance[J]. Journal of Materials Processing Technology. 2004, 145: 207-214.

DOI: 10.1016/s0924-0136(03)00671-x

[8] M. Rosochowska, R. Balendra, K. Chodnikiewicz. Measurements of thermal contact conductance[J]. Journal of Materials Processing Technology, 2003, 135: 204-210.

DOI: 10.1016/s0924-0136(02)00897-x

[9] C. Fieberg, R. Kneer. Determination of thermal contact resistance from transient temperature measurements[J]. International Journal of Heat and Mass Transfer, 2008, 51: 1017-1023.

DOI: 10.1016/j.ijheatmasstransfer.2007.05.004

[10] Zhu Decai. Experiment research on solid interface thermal contact conductance coefficient[D]. Dalian University of Technology, (2007).

[11] Greenwood J A, Williamson J B P. Contact of nominally flat surfaces[J]. Proc Roy Soc Lond, 1966, A295: 300～319.

[12] Majumdar A, Bhushan B. Fractal model of elastic-plastic contact between rough surfaces[J]. ASME Journal of Tribology, 1991, 11: 1～11.

DOI: 10.1115/1.2920588

[13] A. Majumdar, C. L. Tien. Fractal network model for contact conductance[J]. Journal of Heat Transfer, 1991, 113(8): 516-525.

DOI: 10.1115/1.2910594

[14] Zhong Ming, Cheng Shu-xia, Sun Cheng-wei, et al. Monte-carlo simulation for thermal resistance of contact surfaces[J]. Chinese Journal of High Pressure Physics, 2002, 16(4): 305-308.

[15] S. Sunil Kumar, K. Ramamurthi. Prediction of thermal contact conductance in vacuum using Monte Carlo simulation[J]. Journal of Thermo Physics and Heat Transfer, 2001, 15(1): 27-33.

DOI: 10.2514/2.6592

[16] Hegazy, A.A. Thermal joint conductances of conforming rough surfaces: Effects of surface microhardness variation. Ph.D. thesis, Department of Mechanical Engineering, University of Waterloo, Ontario.