Finite element modelling of temper rolling with particular emphasis on roughness transfer
Sprache des Titels:
Abaqus Austria Users' Conference 2005 (Proceedings on CD)
In the skin-pass rolling process the stamping effect of transferring the roll surface structure onto the steel sheet is used to adjust a well defined sheet-surface structure, which is essential for further processing steps. Within the frame of this simulation project study, the transfer behaviour of deterministic roll-surface structures, as generated by the electron beam texturing technique (EBT), was simulated in detail by utilizing the commercial FE-package Abaqus Explicit. The EBT-transfer characteristics for both wet and dry skin-pass rolling of hot-dip galvanized steel strips was investigated and analysed. Special emphasis was put on the accurate and reliable modelling of the liquid enclosed in lubrication pockets (between the work roll surface structure elements and the strip). The results of such FE-simulations clearly point out the basic transfer mechanisms of the 3D elasto-plastic forming processes, namely a combination of penetration processes and reverse extrusion phenomena. Moreover, these simulation data yield valuable insight into the dynamics of the roughness transfer process and its dependence on the material properties and rolling conditions.