| 摘要 |
PURPOSE:To achieve the improvement in slab yield and operating efficiency without requiring mold replacement and mold width replacement by compressing the slab after secondary cooling partially in divided segments of every fixed length through periodic pressing from both sides to a desired width thence cutting the same to a required length by a cutter. CONSTITUTION:The stroke of the horizontal arms 4, 4 of the housing 1 of a liquid- pressure press is set based on the width change amount of the slab 2 after secondary cooling and the operating period of the horizontal arms 4, 4 is determined based on the moving speed of the slab 2 and the parallel part length (l) of the pressing surfaces 13 of the pads 12 for pressing the slab. Next, when the apparatus is operated, the pads 12 press the slab 2 from both sides to compress the same to a desired width, during which time the housing 1 follows up the movement of the slab 2 and moves forward. Upon ending of the compression, the pads 12 open and at the same time, cylinders 14 actuate to reset the housing 1 to the original position. Even after the resetting, the movement of the slab 2 is continuing and during the time when the pressing part of the slab 2 ends passing between the pads 12, the next compression is started. This method eliminates the need for lowering the pouring speed at the width changing. |
