Stahlbandkaltwalzverfahren, Verfahren zur Herstellung eines Kaltgewalzten Stahlbands und Vorrichtung zur Herstellung eines Kaltgewalzten Stahlbands

Details

Veröffentlichungs-Nr.

EP4813535

Anmeldetag

5. August 2024

Veröffentlichung

19. Juni 2025

Rechtsraum

EP

IPC

B21B37/46

Abstract

The present invention provides a steel sheet cold rolling method, a cold-rolled steel sheet manufacturing method, and a cold-rolled steel sheet manufacturing facility that can, based on a coefficient-of-friction prediction method that can predict the coefficient of friction between work rolls and a steel sheet with a high accuracy and predicted coefficient of friction, reduce fluctuations in the sheet thickness along the entire coil length including rolling acceleration and deceleration regions and thereby meet required stringent sheet thickness accuracy. In this steel sheet cold rolling method, a roll peripheral speed of a cold rolling mill is controlled by using a prediction model that predicts the coefficient of friction between work rolls of the cold rolling mill and the steel sheet. The prediction model has been created using actual rolling performance data as explanatory variables and an estimated value of the coefficient of friction as an objective variable. The actual rolling performance data includes the deformation resistance of a steel sheet and a work roll diameter. This steel sheet cold rolling method includes a step of inputting rolling conditions of the steel sheet into the prediction model to predict the coefficient of friction between the work rolls of the cold rolling mill and the steel sheet, and controlling the roll peripheral speed of the cold rolling mill based on variations in the sheet thickness on the cold rolling mill exit side.

Anmelder

Firma

JFE Steel Corporation

Land

🇯🇵 Japan

Fachgebiete