Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 125, Issue -, Pages 638-644Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0924-0136(02)00371-0
Keywords
friction variation; lubrication; hot rolling; finite element analysis
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In both rolling theory and practice, two important factors must be considered: friction and deformation resistance strength. A major handicap to producing accurate and reliable models for hot strip rolling is the lack of well-defined friction boundary conditions. In order to improve the accuracy of the computer on-line control model, in this paper, the authors developed a 3D rigid-visco-plastic finite element method (FEM) model to simulate the hot rolling of strip, considering dry and lubricated conditions. The simulation was based on the experimental conditions conducted on a Hille 100 experimental mill. Rolling pressure was measured by a sensor roll that includes a radial pin and an oblique pin. A comparison of the simulation results and experimental values, such as roll separating force and torque, taking into account the friction variation in the roll bite shows a good agreement. The application of lubrication in hot strip rolling can reduce the roll separating force, and the rolling speed also has a significant influence on the roll separating force. (C) 2002 Elsevier Science B.V. All rights reserved.
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