| 摘要 |
PURPOSE:To give the effect corresponding to negative strip to the bloom without damaging nozzle applying the quantity of compression to the bloom between pinch rolls from the casting mold inlet side at the bloom stop time. CONSTITUTION:During the stop time when a bloom S is intermittently drawn, a tundish 1 and casting mold 3 are pushed in the drawing direction by a push mechanism 6 and are returned during drawing time. The returning stroke length is made about 1 to 10mm. Of this stroke length, about 1mm becomes the correction quantity for the shrinkage quantity of the bloom S and the stroke length above this is effectively utilized as the compression quantity of the bloom S. This eliminates the possibility for production of cracks and shrinkage owing to shrinkage after freezing and promotes regular systematization of the bloom S. |
