Method and apparatus for vertical casting of ingots and ingot thus obtained

摘要

A molten steel of a special steel or the like including a high-alloy steel is poured in a mold 12 whose bottom portion is closed with a dummy head 48 of a lift table. As the lift table 50 is vertically moved down at a given casting speed, a casting 26 whose lower end is supported by the dummy head 48 is continuously pulled out from the bottom portion of the mold 12. As a pair of movable molds 30, 30 that constitute the mold are relatively moved away from each other in synchronism with the downward movement of the lift table, both widthwise side surfaces of the casting 26 are provided with required tapering.