Erik Parteder, Alexander Kainz, Gerald Hein, Klaus Zeman,
"3D Modelling Concepts in Hot Strip Rolling"
, in H. Clemens, W. Krieger, H. Wagner: Berg- und Hüttenmännische Monatshefte (BHM), in BHM Berg- und Hüttenmännische Monatshefte, Vol. 152, Nummer 11, Springer Wien, Seite(n) 367-371, 11-2007, ISBN: 0005-8912, ISSN: 0005-8912
3D Modelling Concepts in Hot Strip Rolling
Sprache des Titels:
Berg- und Hüttenmännische Monatshefte (BHM)
The hot rolling process can be considered as a key step within the production chain of high quality steel strip and sheet material. To attain a better insight into the phenomena during the rolling process, the application of customized on- and off-line modelling tools is of utmost importance. In this paper different approaches to 3D off-line modelling of the hot strip rolling process will be presented. For the prediction of 3D effects during the roughing process of thick slabs, such as the lateral material flow and the influence of an edger, adequate 3D models are essential. They also enable the systematic study of, e.g., asymmetric temperature distributions, camber, wedge and friction inhomogeneities of the rolls in lateral direction and their influence on strip geometry. The presented model for the roughing process is set up by utilizing a commercial finite element code and by decoupling the material flow simulation for the slab from the response of the elastic roll stack. For the prediction of the material flow behaviour in the finishing mill more sophisticated procedures are essential, which couple the deformation of the strip and the elastic response of the rolls iteratively. A customized FEM code for the effective simulation of the elastoplastic material flow inside the roll gap is utilized. Coupling of the strip models with the routines for the elastic roll stack deflection is a precondition to get reliable results concerning profile transfer and residual stress distributions inside the strip, which allows the evaluation of strip flatness.