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A Study on the Improvement of Prediction Accuracy for Rolling Force in Continuous Cold Rolling Mill

연속냉각압연에서의 압연하중 예측정도 향상에 대한 연구

  • 송길호 (포항제철(주) 기술연구소) ;
  • 박해두 (포항제철(주) 기술연구소) ;
  • 김신일 (포항제철(주) 기술연구소)
  • Published : 1996.07.01

Abstract

In the cold rolling mill, it is very important that a constrained static flow stress of rolled strip and rolling force calculation model be exactly considered to improve an prediction accuracy for rolling forces. Therefore, in this study, the values of the constrained static flow stress are used by deriving the regression equation which is a function of rolling conditions(FDT, CT) and chemical compositions(C, Si, Mn), previously applied by making the tables of yield strength for hot coils with size. And with the consideration that an elastic deformation part of an rolled strip appears at the entry and delivery side of the contacting area between the work roll and rolled strip is calculated. By applying these methods, the more accurate prediction for rolling force is obtained. As a results, the deviation of thickness is significantly reduced in the rolling direction.

Keywords

Setup Model;Elastic-Plastic Rolling Force;Constrained Static Flow Stress;Automatic Gauge Control;Rolled Strip;Finishing Delivery Temperature;Coiling Temperature