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Analytical and Numerical Investigation of Horizontal Force and Stable Position of Work Roll in Backup-Roll-Drive 4-High Cold-Rolling Mill

보강롤 구동 4 단 냉간압연기에서 작업롤의 수평하중 거동분석과 안정위치 결정을 위한 해석적 및 수치적 고찰

  • Received : 2010.12.10
  • Accepted : 2011.07.01
  • Published : 2011.09.01

Abstract

The horizontal force acting on a work roll was examined. This force results from the contact force between the work roll and backup roll in a backup-roll-drive 4-high cold-rolling mill. This horizontal force bends the work roll horizontally and therefore exerts reciprocal action on the roll-gap contour. An analytical model for predicting the horizontal force acting on a work roll, which generates a mean value in the steady state, was presented. The material used for the analysis was high-silicon steel (about 3% Si). A three-dimensional finite element (FE) model was also employed to investigate the non-steady-state behavior of the horizontal force. Results showed that the horizontal force varied with the off-center distance between the work roll and backup roll. In addition, the optimal off-center distance was determined to minimize the horizontal force.

Keywords

Horizontal Force of Work Roll;Backup-Roll-Drive;Cold Rolling;Analytic Model;Finite Element Model

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