Pulling-up-type continuous casting apparatus and pulling-up-type continuous casting method

A pulling-up-type continuous casting apparatus comprising:

• a holding furnace that holds molten metal;
• a shape defining member disposed near a molten-metal surface of the molten metal held in the holding furnace, the shape defining member being configured to define a cross-sectional shape of a cast-metal article to be cast as the molten metal passes through the shape defining member;
• and
• a nozzle that blows a cooling gas on the cast-metal article, the cast-metal article being formed as the molten metal that has passed through the shape defining member solidifies, wherein
• the shape defining member comprises:
• a lower-part shape defining member in contact with the molten metal held in the holding furnace;
• and
• an upper-part shape defining member disposed above the lower-part shape defining member, the upper-part shape defining member comprising cooling means for cooling the molten metal that passes through the upper-part shape defining member.

A pulling-up-type continuous casting method comprising:

• a step of pulling up molten metal held in a holding furnace while making the molten metal pass through a molten-metal passage section of a shape defining member, the shape defining member being configured to define a cross-sectional shape of a cast-metal article to be cast;
• and
• a step of blowing a cooling gas on the cast-metal article, the cast-metal article being formed from the molten metal that has passed through the molten-metal passage section, wherein
• the shape defining member comprises:
• cooling means for cooling the molten metal on an outlet side of the molten-metal passage section;
• and
• temperature-maintaining means for maintaining a temperature of the molten metal on an inlet side of the molten-metal passage section, and
• an end face shape of the molten-metal passage section is curved to conform to a surface shape of the molten metal pulled up from the molten-metal surface.

A pulling-up-type continuous casting method comprising:

• a step of pulling up molten metal held in a holding furnace while making the molten metal pass through a shape defining member, the shape defining member being configured to define a cross-sectional shape of a cast-metal article to be cast;
• and
• a step of blowing a cooling gas on the cast-metal article, the cast-metal article being formed from the molten metal that has passed through the shape defining member, wherein
• the shape defining member comprises:
• a lower-part shape defining member in contact with the molten metal held in the holding furnace;
• and
• an upper-part shape defining member disposed above the lower-part shape defining member, and
• the upper-part shape defining member comprises cooling means for cooling the molten metal that passes through the upper-part shape defining member.