PURPOSE: To provide a method for obtaining the aimed thickness of a cast slab while following the change of casting speed at the tip part and also, at the rear end part of the cast slab, in a positively executing method of the rolling reduction to the unsolidified part of the cast slab after the outlet side of a mold in order to produce the cast slab having thinner than the thickness at the outlet side of the mold in the continuous caster.
CONSTITUTION: In the casting method with the rolling reduction to the unsolidified part, at the same time of passing a dummy bar head, the constant pressing force is applied to roll group at the time of starting the continuous casting. In the other hand, at the time of completing the continuous casting, the casting speed is lowered and also, the rolling reduction zone is shifted to the mold 3 side in order, and a seal cap 24 is inserted into the cast slab 5 in the interval when the rear end part of the cast slab is in the mold, or dummy shell 44 is inserted in the mold 3 to execute the rolling reduction together with the dummy shell 44 at the bottom part.
| JPS58119437 | STIRRING METHOD OF MOLTEN METAL |
KANAZAWA TAKASHI
MURAKAMI TOSHIHIKO
HIRASHIRO TADASHI
KUMAKURA SEIJI
