METHOD FOR MANUFACTURING A METAL INGOT COMPRISING A BORE, AND ASSOCIATED INGOT AND MOLDING DEVICE

摘要

A method for producing a metal ingot using a mold which includes a mold cavity defined by an ingot mold, a core and a bottom arranged inside a vacuum-cast enclosure including a portion for introducing molten metal at the upper portion thereof. A portion for receiving and distributing molten metal, which is suitable for receiving the molten steel introduced into the vacuum-cast enclosure and for redistributing the molten metal in the mold cavity, is arranged at the upper portion of the mold cavity. The molten metal is introduced into the enclosure to form a first jet of molten steel under a vacuum, to pour the molten metal over the portion and to form at least one second jet of molten steel under a vacuum, which originates with the portion and terminates in the mold cavity to fill the mold cavity with molten metal.