PULLING-UP-TYPE CONTINUOUS CASTING APPARATUS AND PULLING-UP-TYPE CONTINUOUS CASTING METHOD

摘要

A pulling-up-type continuous casting apparatus according to an aspect of the present invention includes a molten-metal holding furnace that holds molten metal, a shape defining member configured to define a cross-sectional shape of a hollowed cast-metal article to be casted as held molten metal drawn from the molten-metal surface passes through the shape defining member, a cooling unit that cools the held molten metal by blowing a cooling gas on an inner peripheral surface of the hollowed cast-metal article near an solidification interface, the drawn molten metal continuously extending to the cast-metal article through the solidification interface, and a blower unit that blows air to a negative pressure area formed in a space between a flow path through which the cooling gas blown from the cooling unit flows and a top surface of the shape defining member.

主权项

1. A pulling-up-type continuous casting apparatus comprising:
a holding furnace that holds molten metal; a shape defining member disposed above a molten-metal surface of the molten metal, the shape defining member being configured to define a cross-sectional shape of a hollow cast-metal article to be casted as the molten metal drawn from the molten-metal surface passes through the shape defining member; and a cooling unit that cools the molten metal drawn from the molten-metal surface by blowing a cooling gas on an inner peripheral surface of the hollow cast-metal article near an solidification interface, the drawn molten metal continuously extending to the hollow cast-metal article through the solidification interface, wherein the pulling-up-type continuous casting apparatus further comprises a blower unit that blows air to a negative pressure area formed in a space between a flow path through which the cooling gas blown from the cooling unit flows and a top surface of the shape defining member.