Identification method and rolling method of deformation characteristics of plate rolling mill

摘要

PROBLEM TO BE SOLVED: To provide a method for identifying deformation characteristics of a plate mill and a rolling method, by which a rolling operation is performed so that right and left elongation percentages of a rolled stock are equal to each other in the rolling of a metallic plate. SOLUTION: In the method for identifying the deformation characteristics of a multistage plate mill having =4 stages, a kiss roll screw down is performed by manipulating a screw-down device and data sampling by kiss roll screw down for simutaneously sampling the output of load cells for measuring rolling load which are arranged on the work side and the drive side of at least either of the upper and lower rolls of the plate mill, measured values of the screw down locations on the work side and the drive side and the measured values of the thrust reaction force in the direction of the roll axis of work rolls, and preferably all of both the upper and lower rolls between the work rolls and intermediate rolls are respectively performed for every roll rotation stopping state and roll rotating state to a plurality of the conditions of the screw-down location. From these data of the kiss roll screw down, the deformation properties of housings and screw-down systems of the rolling mill on the work side and the drive side and the deformation characteristics of back-up roll bearings on the work side and the drive side are identified.