Advanced shape control method for edge part of cold strip using Sendzimir mill with the first intermediate roll

摘要

An object of the present invention is to provide a shape control method of both ends of the width of the steel sheet using a multi-stage rolling mill to stabilize and automatically control the shape control of both ends of the width of the steel sheet during cold rolling of the steel sheet using a multi-stage rolling machine.;According to the present invention, in the method for controlling the shape of both ends of the width of the steel sheet by using the multi-stage rolling mill (1) having a pair of primary intermediate rolls (3, 4) in the upper and lower portions of the steel sheet (9), Obtaining a shape error in consideration of the reference value of the shape by receiving the shape of the steel sheet 9 from the shape measuring device 10 located in front and rear of the multi-stage rolling mill (1), and the recognized shape and the thickness of the entry and exit side of the steel sheet (9) From the rolling speed, the position measurement value of the primary intermediate roll, the steel grade, and the width of the plate, the control amount of the primary intermediate rolls 3 and 4 for driving the primary intermediate rolls 3 and 4 is determined by fuzzy logic. Step S4 and moving the primary intermediate rolls 3 and 4 according to the control amount of the primary intermediate rolls 3 and 4 obtained by the fuzzy logic. A shape control method of both ends of the width of the steel sheet is provided.