Method of hot rolling steel from concast material

摘要

A process is disclosed for manufacturing hot rolled steel strips from a continuously cast bloom in at least two shaping stages having each one or several mill stands. In the first shaping stage, the bloom is rolled at its output speed from the continuous casting plant and the thus produced bloom is coiled before entering the second shaping stage at its output speed from the first shaping stage. Once the desired coil weight is reached, the bloom is uncoiled and supplied for finishing to the second shaping stage at the initial pass speed, and is then wound into finished coils of the desired sizes. In the first shaping stage, at least 40 t of a casting sequence from the continuous casting plant are continuously rolled out into a bloom and wound into a semi-finished coil. After being finish-rolled in an almost continuous manner, the semi-finished strip in this semi-finished coil is cut after the second shaping stage into strips which correspond to the desired coil weights and wound as a finished strip.