In a formed body manufacturing method, molten metal is led out from a molten metal surface of the molten metal held in a holding furnace and is passed through a shape defining member configured to define a sectional shape of the formed body, and the formed body manufacturing method includes: measuring a surface temperature of the formed body formed such that retained molten metal that has passed through the shape defining member solidifies; adjusting a height of a coating material spray nozzle based on a result of the measurement of the surface temperature of the formed body so that the surface temperature of the formed body to which the heat dissipation coating material is blown becomes a solidifying point of the molten metal or less; and spraying the heat dissipation coating material to a surface of the formed body from the coating material spray nozzle.

A hoisting type continuous casting device includes a keeping furnace, a first shape regulating member, an imaging section, an image analysis section, and a casting control section. The keeping furnace keeps a melt. The first shape regulating member is mounted in the vicinity of a molten surface of the melt kept in the keeping furnace and regulates a cross-sectional shape of a casting to be casted by the melt passing therethrough. The imaging section captures an image of the melt that has passed through the first shape regulating member. The image analysis section detects swinging motion in the melt from the image and determines a solidification interface based on presence or absence of the swinging motion. The casting control section changes a casting condition when the solidification interface determined by the image analysis section is not within a predetermined reference range.

An up-drawing continuous casting method casts a casting having a bent portion. When an angle () (where, 090) between an up-drawing direction of molten metal and an upper surface of a shape determining member is reduced to a first angle, drawing up the molten metal while maintaining the angle () at the first angle, and casting a first casting, and casting a connecting portion adjacent to the cast first casting; interrupting the drawing up of the molten metal, and dipping the connecting portion into the molten metal while passing the connecting portion through the shape determining member, and melting the connecting portion; and setting the angle () to a second angle that is larger than the first angle, restarting the drawing up of the molten metal and casting a second casting adjacent to the first casting.

The invention relates to a continuous casting nozzle assembly (10) for casting, in particular for upward vertical casting, of a metallic, in particular a non-ferrous, pipe, which is suitable for uninterrupted casting, which nozzle assembly comprises a nozzle (11), a mandrel (12) and a cooler (15). Surface roughness of at least part, in particular of the dwindling area (Z), of inner surface of the nozzle (11) of the nozzle assembly (10) is 1-8.0 Ra, advantageously 3-5 Ra.

A pulling-up-type continuous casting apparatus includes a holding furnace that holds molten metal, a shape defining member disposed above a surface of the molten metal held in the holding furnace, and configured to define a cross-sectional shape of a cast-metal article as the molten metal passes through it, an image pickup unit that takes an image of the molten metal that has passed through the shape defining member, an image analysis unit that detects a fluctuation on the molten metal from the image and determines a solidification interface based on presence/absence of the fluctuation, and a casting control unit that changes a casting condition only when the solidification interface determined by the image analysis unit is not within a predetermined reference range. The casting control unit uses a reference range which differs according to the pulling-up angle of the molten metal.

A pulling-up-type continuous casting apparatus according to an aspect of the present invention includes a holding furnace that holds molten metal, and a shape defining member disposed above 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 molten metal passes through an opening formed in the shape defining member. The opening is formed in such a manner that a size of the opening on a top surface of the shape defining member is larger than that on a bottom surface of the shape defining member. With this configuration, a cast-metal article having excellent surface quality can be produced even when molten metal is drawn up in an oblique direction.

There are provided a manufacturing method of a casting capable of easily manufacturing a casting having a complex form and of increasing the degree of freedom of form of the casting to be manufactured, a manufacturing device thereof and a casting. At the time of forming a casting by drawing out molten metal from a bath surface of a molten metal bath and solidifying the molten metal which has been drawn out, an outer contour unit configured from a plurality of outer contour defining members for defining the outer contour of a casting is arranged in a region between the bath surface of the molten meth bath and a solid region where the molten metal is solidified and the molten metal which has been drawn out from the bath surface is drawn out through a region determined by the outer contour unit, and the form of the casting is changed by moving at least one of the plurality of outer contour defining members according to the drawing out of the molten metal.

An up-drawing continuous casting apparatus according to one aspect of the present invention is an up-drawing continuous casting apparatus including a molten metal holding furnace (101) configured to hold molten metal (M1) therein, and a shape determining member (102) placed on a molten metal surface of the molten metal (M1) and configured to determine a sectional shape of a casting (M3) to be casted when retained molten metal (M2) led out from the molten metal surface passes through the shape determining member (102). The shape determining member (102) includes inner shape determining plates (1041, 1042) connectable to each other, and an inner shape determining plate (1043) serving as a connecting member configured to connect the inner shape determining plates (1041, 1042) to each other.

An up-drawing continuous casting method casts a casting having a bent portion. When an angle () (where, 090) between an up-drawing direction of molten metal and an upper surface of a shape determining member is reduced to a first angle, drawing up the molten metal while maintaining the angle () at the first angle, and casting a first casting, and casting a connecting portion adjacent to the cast first casting; interrupting the drawing up of the molten metal, and dipping the connecting portion into the molten metal while passing the connecting portion through the shape determining member, and melting the connecting portion; and setting the angle () to a second angle that is larger than the first angle, restarting the drawing up of the molten metal and casting a second casting adjacent to the first casting.