| 摘要 |
A method capable of effectively preventing the edge drop of a hot rolled strip by further developing a shift control method using a taper roll, thereby calculating a shift amount of the taper roll according to abrasion of a roll more accurately and controlling the shift amount of the taper roll is provided. In an ordinary hot rolling method comprising a reheating furnace, rough rolling and finish rolling, in which both ends of a working roll used in the finish rolling are tapered, and the taper roll is shifted in an axial direction of a rolling mill, a method for reducing the edge drop of a hot rolled strip using a taper roll comprises: (a) obtaining a shit amount of the taper roll according to a relational expression of a wear amount of a roll according to the rolling process, a taper amount of the roll, and a width of a hot rolled strip that is being rolled as an operation amount for reducing the edge drop of the hot rolled strip; and (b) shifting the taper roll in the axial direction of the rolling mill according to the obtained shift amount.
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