| 摘要 |
PURPOSE:To stop a casting mold and a solidified shell relatively and to obtain an ingot having a good surface by oscillating the casting mold which is so disposed as to be inserted into a vessel for molten steel in a horizontal direction and moving the mold in synchronization with the drawing speed while the oscillation is in the drawing direction of the ingot. CONSTITUTION:A casting mold 4 is disposed with a vessel 1 for molten steel in which molten steel 2 is stored, in such a way that the mold can be oscillated in the drawing direction A of an ingot and the opposite direction theeof. An ingot 5 is drawn in an arrow C direction by drawing rolls 6 and the mold 4 is oscillated by a driving device 7. Then, the mold 4 moves in the counter drawing direction upon arriving at the right dead point, and moves again in the right direction in synchronization with the drawing speed upon arriving at the left dead point. The relative speeds of the mold 4 and the solidified sheel are zero in this stage, then the solidified shell and the mold 4 stop relatively for >=1.5sec, thereby accelerating the formation of the solidified shell and permitting the continuous drawing of the ingot 5. |
