Abstract: Provided is a method for producing a heat sink that can easily and effectively form a heat radiating film on the surface of a substrate without requiring enormous heat energy for increasing the temperature of the substrate. The method is a method for producing a heat sink having a substrate and a heat radiating film formed on the surface of the substrate, including a first step of casting a substrate by injecting molten metal into a cavity of molding dies; and a second step of applying a heat radiating coating to the substrate through spraying or dropping in the period from when the molding dies are opened after the casting until when the temperature of the substrate that has been cast becomes lower than the deposition temperature that is a temperature necessary to deposit the heat radiating coating on the substrate.

Abstract: An up-thawing continuous casting method includes drawing up molten metal (M1) held in a holding furnace (101), through a shape determining member (102) that determines a sectional shape of a cast casting (M3). The sectional shape determined by the shape determining member (102) includes a round-cornered portion, and a value (Rf) of a curvature radius of the round-cornered portion that is determined by the shape determining member (102) is smaller than a design value (Rt) of a curvature radius of a round-cornered portion of the casting (M3).

Abstract: A mold capable of inhibiting supercooling is provided. The mold includes a cooling channel formed therein and has a recess formed in a cavity surface, and a heat-insulating barrier formed between the cooling channel and a bottom surface of the recess formed in the cavity surface. The heat-insulating barrier includes a space formed between the cooling channel and the bottom surface of the recess formed in the cavity surface. The space is filled with a medium (for example, air) having a thermal conductivity lower than that of other portions of the mold.

Abstract: 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.

Abstract: An up-drawing continuous casting method casts a casting having a bent portion. When an angle (?) (where, 0°???90°) 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.

Abstract: Provided is a method for producing a heat sink that can easily and effectively form a heat radiating film on the surface of a substrate without requiring enormous heat energy for increasing the temperature of the substrate. The method is a method for producing a heat sink having a substrate and a heat radiating film formed on the surface of the substrate, including a first step of casting a substrate by injecting molten metal into a cavity of molding dies; and a second step of applying a heat radiating coating to the substrate through spraying or dropping in the period from when the molding dies are opened after the casting until when the temperature of the substrate that has been cast becomes lower than the deposition temperature that is a temperature necessary to deposit the heat radiating coating on the substrate.

Abstract: 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.

Abstract: 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.

Abstract: An up-drawing continuous casting method casts a casting having a bent portion. When an angle (?) (where, 0°???90°) 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.

Abstract: 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.

Abstract: A pulling-up-type continuous casting method according to an aspect of the present invention includes disposing a shape defining member (102) above a molten-metal surface of molten metal (M1) held in a holding furnace (101), the shape defining member (102) being configured to define a cross-sectional shape of a cast-metal article (M3) to be cast, submerging a starter (ST) into the molten metal (M1) while making the starter (ST) pass through the shape defining member (102), and pulling up the molten metal (M1) by pulling up the starter (ST) while making the molten metal (M1) pass through the shape defining member (102) after a temperature of the shape defining member (102) reaches a predetermined reference temperature. The reference temperature is equal to or higher than a solidification completion temperature of the molten metal (M1).

Abstract: 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 disposed in a vicinity of a molten-metal surface in the molten-metal holding furnace, the shape defining member being configured to define a cross-sectional shape of a cast-metal article to be cast as the held molten metal passes through the shape defining member, and an actuator that applies a pressure to the molten metal held in the molten-metal holding furnace and thereby makes the held molten metal pass through the shape defining member.

Abstract: 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.

Abstract: 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.

Abstract: An up-drawing continuous casting apparatus according to one aspect of the invention includes a molten metal holding furnace that holds molten metal; a shape determining member that is arranged near a molten metal surface of the molten metal held in the molten metal holding furnace, and that determines a sectional shape of a cast casting by the molten metal passing through the shape determining member, the shape determining member including a pattern provided on an upper surface of the shape determining member; an imaging portion configured to capture an image of the pattern that is reflected onto both retained molten metal that has passed through the shape determining member, and the casting formed by the retained molten metal solidifying; an image analyzing portion configured to determine a solidification interface from the image; and a casting controlling portion configured to change a casting condition.

Abstract: A pulling-up-type continuous casting apparatus according to the present invention includes a molten-metal holding furnace (101) that holds molten metal (M1), a starter (ST) that draws the molten metal (M1) held in the molten-metal holding furnace (101) from a molten-metal surface of the molten metal (M1), and a shape defining member (102) that defines a cross-sectional shape of a cast-metal article (M3) to be cast by applying an external force to the held molten metal (M2) drawn by the starter (ST), in which the starter (ST) includes a body part (107) and a tip part (108), the tip part (108) including a tip (109) having a horizontal cross section smaller than that of the body part (107).

Abstract: A pulling-up-type continuous casting method according to an aspect of the present disclosure is a pulling-up-type continuous casing method for pulling up molten metal held in a holding furnace by using a starter. When the starter is accelerated to a predetermined pulling-up speed at a start of casting, the pulling-up-type continuous casting method includes a first acceleration section in which the starter is accelerated from a standstill state to a first speed at a first acceleration, a second acceleration section in which the starter is accelerated from the first speed to a second speed at a second acceleration, and a constant speed section in which the starter is pulled up at the first speed, the constant speed section being positioned between the first and second acceleration sections.

Abstract: A pulling-up-type continuous casting apparatus according to an aspect of the present invention includes a holding furnace that holds molten metal, a shape defining member configured to define a cross-sectional shape of a cast-metal article to be cast by a molten-metal passage section through which the molten metal passes, 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 molten-metal passage section. The shape defining member includes 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. 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.

Abstract: An upward continuous casting apparatus includes a molten metal retaining furnace that retains a molten metal, a draw-out part that draws out the molten metal from a melt surface of the molten metal that is retained in the molten metal retaining furnace, a shape-defining member that is located in the vicinity of the melt surface and defines a cross-sectional shape of a casting to be cast by applying an external force to a retained molten metal that has been drawn out by the draw-out part, and a solid heat transfer member that is placed to contact a surface of the casting that is formed through the shape-defining member.

Abstract: A pulling-up-type continuous casting apparatus according to an aspect of the present invention includes 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, a first 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, and a second nozzle that blows a gas toward the cast-metal article in an obliquely upward direction from below a place on the cast-metal article on which the cooling gas is blown from the first nozzle.