JPS5542188A - Initial rolling setting method of six-highroll rolling mill - Google Patents

Abstract

PURPOSE: To roll strips of excellent shape from the start of rolling, by correcting and storing the initial set points of the intermediate roll positions and roll bending pressures according to the experienced values.

CONSTITUTION: The elongation of strip shape is measured by a shape detector 7, and symmetric component shape parameter and asymmetric component parameter are determined from this elongation in a shape parameter converting device 8. The shape effect coefficients of intermediate roll position and roll bending pressure while rolling an advance rolling material are calculated in a calculating unit 9. In other calculating unit 10, a correction amount is computed so that the shape parameter of the advance rolling material may approach from the experienced value towards the value of a target value indicating device 11, and the optimum set points of the roll bending pressure and intermediate roll of the advance rolling material are determined. Inputting these values into a write-read device 12 of the memory unit, the values are applied to a roll bending device 13 and an intermediate roll position shift device 14. Thus, the quality of rolled products may be increased.

COPYRIGHT: (C)1980,JPO&Japio