| 摘要 |
PURPOSE: To provide a method for manufacturing hot rolled strip, the method for preventing strip deflection of the header part of the hot rolled strip in the hot finish rolling process by properly controlling bender force for controlling strip crown during threading of a header part of the strip in a process of finish rolling a hot rolled strip. CONSTITUTION: In a method for manufacturing hot rolled strip comprising a process of rough rolling a steel slab in a roughing mill, a process of finish rolling the strip by applying bender force to a rough rolled strip in a finishing mill equipped with a bender, and a process of coiling the finish rolled strip in a down coiler, the method is characterized in that when a header part of the rough rolled strip passes through a finish rolling zone, the finish rolling zone is divided into a first half zone and a second half zone, and bender force in the second half zone is not greater than bender force of the first half zone so that the header part of the hot rolled strip is not deflected in a non-tension section between the finish rolling section and the down coiler.
|
