The method of determining the strip crown prediction model

摘要

PROBLEM TO BE SOLVED: To provide a determination method of a plate crown prediction model for determining the plate crown prediction model, without receiving influence of uneven heat of a rolling material and a metal flow in a width direction.SOLUTION: A determination method of a plate crown prediction model according to the present invention is a determination method of the plate crown prediction model for determining the plate crown prediction model by using [a restraining degree parameter] of indicating a restraining degree of a backup roll 5 to a housing of rolling machines 2 and 3 when determining the plate crown prediction model of the rolling material X rolled by the rolling machines 2 and 3 having a rolling roll constituted of a pair of upper-lower work rolls 4 and the backup roll 5 for supporting the work rolls 4, and determines [the restraining degree parameter] of the backup roll 5 based on the measured deformation quantity of the backup roll 5, by putting the pair of upper-lower work rolls 4 in a kiss state in a state before introducing the tolling material X.