Abstract
A theoretical model based on slab method is proposed to analyze asymmetrical rolling of bonded two-layer sheets where the ingoing sheet is forced to horizontally enter the roll gap. Separate equilibrium equations as well as yield relations are derived for each layer by considering different stress fields for the two layers of any slab within the roll gap. A large angle of bite is considered in the governing equations as the experimental data used for verifying the results belong to the rolling conditions where small bite angle assumption is not reasonable. The curvature of the sheet at exit from the roll gap is estimated by studying variations of the normal and the shear strains within the whole roll gap. A very good agreement is shown to exist between the rolling force as well as the outgoing curvature predicted by the present model and the available analytical and experimental results reported by other investigators. By studying the outgoing curvature at different conditions, some practical suggestions to minimize the strip curvature at exit from the roll gap are proposed.
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References
Hamauzu S (1987) The FEM analysis of hot clad sheet rolling and avoidance of curvature. Iron Steel A 59:59–62 (in Japanese)
Shiyouya S (1989) The analysis of clad sheet rolling by FEM. Proceeding for the 40th Joint Conference of JSTP 81-84 (in Japanese)
Manesh HD, Taheri AK (2005) An investigation of deformation behavior and bonding strength of bimetal strip during rolling. Mech Mater 37(5):531–542
Lee SH, Lee DN (1991) Slab analysis of roll bonding of silver clad phosphor bronze sheets. Master Sci Technol 7(11):1042–1050
Tzou GY, Lee KL, Jian HR, Lion JC, Huang MN (2000) Analysis of the cold and hot bond rolling of clad sheet. Proceeding of 8th Int Conf on Metal Forming, Krakow, Poland 116–120
Hwang YM, Manabu K (1992) Analysis of asymmetrical complex rolling of multi-layer sheets by upper bound method. J Chin Soc Mech Eng 13:33–45
Hwang YM, Chen TH, Hsu HH (1996) Analysis of asymmetrical clad sheet rolling by stream function method. Int J Mech Sci 38(4):443–460
Yong J, Dashu P, Dong L, Luoxing L (2000) Analysis of clad sheet bonding by cold rolling. J Mater Process Technol 105(1):32–37
Reyds D, Dyja H, Berski S (2003) The prediction of curvature of bimetallic plate Al-Cu during asymmetrical cold rolling. METABK 42:261
Hwang YM, Tzou GY (1996) An analytical approach to asymmetrical cold- and hot-rolling of clad sheet using the slab method. J Mater Process Technol 62:249–259
Pan SC, Huang MN, Tzou GY, Syu SW (2006) Analysis of asymmetrical rolling of unbounded clad sheet under constant shear friction. J Mater Process Technol 177:114–120
Salimi M, Sassani F (2002) Modified slab analysis of asymmetrical plate rolling. Int J Mech Sci 44:1999–2023
Salimi M, Kadkhodaei M (2004) Slab analysis of asymmetrical sheet rolling. J Mater Process Technol 150:215–222
Ghobrial MI (1989) A photo elastic investigation on the contact stresses developed in rolls during asymmetrical rolling. Int J Mech Sci 34:757–764
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Qwamizadeh, M., Kadkhodaei, M. & Salimi, M. Asymmetrical rolling analysis of bonded two-layer sheets and evaluation of outgoing curvature. Int J Adv Manuf Technol 73, 521–533 (2014). https://doi.org/10.1007/s00170-014-5825-4
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DOI: https://doi.org/10.1007/s00170-014-5825-4