WIDTH CHANGING METHOD DURING CONTINUOUS CASTING

摘要

PURPOSE:To change the width of an ingot without exerting undue deformation to a solidified shell and without generating air gaps between the shell and mold short sides by adjusting automatically a taper in such a manner that the solidified shell under continuous casting contacts uniformly with the mold short sides. CONSTITUTION:Moving bars consisting of independently driven screw bars, etc. are connected to the top and bottom ends of the short side back plates of the respective mold short sides 1. The ordinary taper prior to the change of the width is changed to the taper necessary for changing the width in the 1st stage and the short sides are parallel moved at the specified taper after the change in the 2nd stage. The taper after the change is returned to the original taper in the 3rd stage and is adjusted to the reference taper suitable for the mold width after the width change in the 4th stage. The taper is adjusted toward arrow P and Q directions in this invention and therefore the solidified shell 1 contacts always uniformly with the short sides 1 without the undue deformation to curve the shell 11 and without the generation of the air gaps.