Prediction of Work-Piece Constitutive Equation in Hot Rolling of Strip

Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

مقاله 8، دوره 1، شماره 4، آذر 2008، صفحه 77-84   

نوع مقاله: Persian

نویسندگان

Sahar Salimi¹؛ Samira Salimi²؛ Amir H. Adibi-Sedeh^{* 3}

¹M.Sc. Student, Chemical and Materials Engineering Department, University of Alberta, Edmonton, Canada.

²M.Sc. Student, Mechanical Engineering Department, University of Calgary, Calgary, Canada.

³Assistant Professor, Dept. of Industrial and Manufacturing Engineering, Wichita State University, Wichita, Kansas, USA

چکیده

Dimensional control of the work-piece in steel industry is of important interest. The main aspects in overcoming the thickness control are variations in material strength due to variations in chemical composition, work-piece temperature, reduction and the strain rate applied to the work-piece. In this paper based on the main parameters affecting the rolling force an attempt been made to give a more accurate prediction for the flow stress in a steel rolling finishing mill. Predicted values of the model are compared with those of the experimental values which are shown to be in good agreements

کلیدواژه‌ها

Flow stress؛ Hot rolling؛ Least square fitting؛ Constitutive equation

مراجع

[1] Anderson J.G., Evans R.W., Modeling flow stress evolution during elevated temperature deformation of two low carbon steels, Iron making and Steelmaking, Vol. 23(2) 1996, pp. 130-135.

[2]   Avrami M., Kinetics of phase change: I. General theory, J. Chemical Physics, Vol.7, 1939, pp. 1103-1112.

[3] Roberts W.L., Hot rolling of steel, Marcel Dekker Inc., New York, 1983.

[4]  Mohamed F.A., Langdon T.G., The transition from dislocation climb to viscous glide in creep of solid solution alloys, Acta Metallurgic, Vol. 22 (6), 1974, pp. 779-788.

[5]     Frost H.J., Ashby M.F., Deformation Mechanism Maps, Pergamon Press, Oxford, 1982.

[6]    Park J. , Prediction of the flow stress and grain size of steel during thick-plate rolling, J. Materials Processing Technology, Vol. 113
(1-3), 2001, pp. 581-586.

[7]  Xu G., Wan L., Zhang X., Xue Z., Study on flow stress model of a micro alloyed high strength steel in CSP hot rolling, Materials Science Forum, PART 1, 2008, pp. 267-272 

[8]  Zener C., Hollomon H., Effect of strain rate upon plastic flow of steel, J .Applied Physics, Vol. 15 ,1944, pp.22-28.

[9]   Sellars C.M., Basics of modeling for control of microstructure in thermo- mechanical controlled processing, Iron making and steelmaking, Vol. 22 (6), 1995, pp. 459-464.

[10]   Wang S.R., Tseng A.A., Macro and Micro Modeling of Hot Rolling of Steel Coupled by a Micro Constitutive Relationship, Iron and Steelmaker, (I and SM) 23, 1996.

[11]                         Zheng C., Xiao N., Li D., Li Y., Microstructure   prediction of the austenite  recrystallization during multi-pass steel strip hot rolling: A cellular automaton modeling, Computational Materials Science, Vol. 44 (2), 2008, pp. 507-514.

[12] Inouye K., Studies on the hot working
strength of steels. Tetsu to Hagane,Vol. 41,  
1955, pp593-607.

[13]  Gunasekera J.S., Alexander J.M., Analysis of Rolling, CIRP Annals – Manufacturing Technology, Vol. 36 (1), 1987, pp. 203-206.

[14] Freshwater I.J., Simplified theories of flat rolling- I. The calculation of roll pressure, roll force and roll torque, Int. J. Mechanics. Science, Vol.38 (6), 1996, pp. 633-648.

[15]  Hitchcock H., Roll neck bearings, New York. App. I. ASME, 1935.

[16]  Kaplanov V. I. , PrisyazhnyiA. G., Simulation of contact friction in the hot rolling of steel sheet, Steel in Translation, Vol. 38(9), 2008, pp.714-718.