METHOD OF CONTROLLING PLATE PROFILE OF HOT FINISHING TANDEM ROLLING MILL AND HOT FINISHING TANDEM ROLLING MILL

摘要

The present invention provides a method of controlling a sheet profile of a hot finishing tandem rolling mill and a hot finishing tandem rolling mill capable of controlling an edge profile in a predetermined value or less. A determination control device (60) of a control system (50) controls a line load of a final stand (100) in order for the edge profile to be in a tolerance range based on a relation of a sheet crown and the edge profile on an outlet of the final stand (100) about a line load and sheet shape control parameter calculated about the final stand (100) of the hot finishing tandem rolling mill (1). The sheet shape control parameter of the final stand (100) is controlled in order for a sheet shape of the outlet of the final stand (100) to be in a tolerance range and in order for the sheet crown to be in a predetermined value or less. As such, a predetermined pass schedule is determined; thus the edge profile being able to be controlled in a predetermined value or less, and the sheet crown is able to be controlled in a predetermined value or less within the tolerance range of the sheet shape.