In this paper an integrated model has been developed that is capable of considering the effects of process parameters on the thermo-mechanical behaviour of the work-roll and the strip during hot rolling operations. The commercially finite element package ABAQUS is utilized to solve the governing equations, while an elasto-viscoplastic material behaviour is utilized in the model. The model may be employed in single-pass as well as multi-pass rolling layouts. Various aspects of the hot rolling process are predicted including temperature field and thermo-mechanical stresses within the work-roll as well as temperature, strain, and residual stresses distributions within the strip. To assess the accuracy of the model, predicted results have been compared with experimental data and good agreement has been observed.
LenardG.PietrzykM.CserL., Mathematical and physical simulation of the properties of hot rolled products (Oxford: Elsevier Science1999).
2.
TsengA.GunderiaS.SunP., ‘Cooling of roll and strip in steel rolling’Steel Res.62 (1991): 207–215.
3.
LinZ.ChenC., ‘Three-dimensional heat-transfer and thermal-expansion analysis of the work roll during rolling’J. Mater. Processing Technol.49 (1995): 125–147.
4.
ChenW. C.SamarasekaraI. V.KumarA.HawboltE. B., ‘Mathematical modeling of heat flow and deformation during rough rolling’Ironmaking and Steelmaking20 (1993): 113–125.
5.
KimS. H.LeeJ. H.KwakW. J.HwangS. M., ‘Dimensionless analysis of hot strip rolling for on-line prediction of thermomechanical behaviour of roll-strip system’ISIJ Int.45 (2005): 199–208.
6.
HwangS. M.SunC. G.RyooS. R.KwakW. J., ‘An integrated FE process model for precision analysis of thermo-mechanical behaviors of rolls and strip in hot strip rolling’Comput. Methods Appl. Mech. Engng191 (2002): 4015–4033.
7.
GratacosP.MontmitonnetP.FromholzC.ChenotJ. L., ‘A plane strain elastoplastic finite element model for cold rolling of thin strip’Int. J. Mech. Sci.34 (1992): 195–210.
8.
HacquinA.MontmitonnetP.GuilleraultJ. P., ‘A steady state thermo-elastoviscoplastic finite element model of rolling with coupled thermo-elastic roll deformation’J. Mater. Processing Technol.60 (1996): 109–116.
9.
KwakW. J.KimY. H.LeeJ. H.HwangS. M., ‘A precision on-line model for the prediction of roll force and roll power in hot strip rolling’Metall. Mater. Trans.33A (2002): 3255–3272.
10.
YamadaK.OgawaS.HamauzuS., ‘Two-dimensional thermo-mechanical analysis of flat rolling using rigid-plastic finite element method’ISIJ Int.31 (1991): 566–570.
11.
SunC. G.YunC. S.ChungJ. S.HwangS. M., Investigation of thermomechanical behavior of a work roll and of roll life in hot strip rollingMetall. Mater. Trans.A29 (1998): 2407–2424.
12.
HwangS. M.JounM. S.KangY. H., ‘Finite element analysis of temperatures, metal flow, and roll pressure in hot strip rolling’Trans. ASME Industry115 (1993): 290–298.
13.
ZhouS. X., ‘An integrated model for hot rolling of steel strips’J. Mater. Processing Technol.134 (2003): 338–351.
14.
HwuY.LenardJ. G., ‘A finite element study of flat rolling’Trans. ASME, J. Engng Mater. Technol.110 (1988): 22–27.
15.
YaritaI.MallettR. L.LeeE. H., ‘Stress and deformation analysis of plane strain rolling process’Steel Res.56 (1988): 231–255.
DunneF.PetrinicN., Introduction to computational plasticity (New York: Oxford University Press2006).
18.
HadlyC. O.BrimacombeJ. K.SamarasekaraI. V.HawboltE. B., Heat transfer in the hot rolling of metalsMetall. Mater. Trans.26B (1995): 1019–1027.
19.
KainzA.KrimpelstätterK.ZemanK., FE-simulation of thin strip and temper rolling processes (2003).
20.
StevensP. G.IvensK. P.HarperP., ‘Increasing work roll life by improved roll-cooling practice’J. Iron Steel Inst.209 (1971): 1–11.
21.
SerajzadehS., ‘Effects of rolling parameters on work-roll temperature distribution in the hot rolling of steels’Int. J. Advd Mfg Technol.35 (2006): 859–866.
