Patent ID: 6722174
Filing Date: 2004-04-20
Classification: B21B,B21J

Abstract:
An apparatus for manufacturing a hot-rolled steel plate by plate thickness pressing comprising: a rough processing facility for applying a thickness reduction process to a hot slab cast by a continuously casting facility to obtain a sheet bar; a finishing mill group for rolling said sheet bar obtained by said rough processing facility to obtain a hot-rolled steel plate having a predetermined plate thickness; and a coiler for winding said hot-rolled steel plate, said rough processing facility, said finishing mill group and said coiler being arranged therein in the mentioned order, wherein said rough processing facility includes forging means using a pair of dies each of which has an inclined portion on an input side and a flat portion on an output side as at least a part of thickness reduction processing means and said apparatus for manufacturing a hot-rolled steel plate further comprises width reducing means provided on the upstream side of said thickness reduction forging means and said thickness reduction forging means comprises a caliber roll.