| 摘要 |
The purpose of the present invention is to provide a thick steel plate manufacturing device and manufacturing method in which, by leveling, in a descaling step, scale occurring on the surface of the thick steel plate, cooling is evenly performed in a cooling step, achieving excellent steel plate shape. In this thick steel plate manufacturing device, a hot-rolling device, a shape correction device, a descaling device and an accelerated cooling device are arranged in that order from the upstream side of the conveyance direction, wherein the energy density E of the cooling water sprayed at the surface of the thick steel plate by the descaling device is 0.10J/mm2 or greater. |
