JP2014057980A - Pull up type continuous casting device and pull up type continuous casting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pull up type continuous casting device and pull up type continuous casting method which realizes higher casting speed and has excellent productivity.SOLUTION: The pull up type continuous casting device regarding an embodiment of the invention comprises: a holding furnace 101 for holding molten metal; shape defining members 102b which are arranged at a position close to the molten metal surface of molten metal M1 which is held in the holding furnace 101 and defines the cross-sectional shape of a casting product by allowing passage of molten metal M2; cooling parts 106 which cools and solidify the molten metal M2 which has passed the shape defining member 102b; a molten metal cooling part 107 by which the temperature of the molten metal M1 held in the inner section of the holding furnace 101 is decreased.

Description

  The present invention relates to an up-drawing continuous casting apparatus and an up-drawing continuous casting method.

  In Patent Document 1, the inventors have proposed a free casting method as an innovative pulling-up-type continuous casting method that does not require a mold. As shown in Patent Document 1, after the starter is immersed in the surface of the molten metal (molten metal) (that is, the molten metal surface), when the starter is pulled up, the molten metal follows the starter by the surface film or surface tension of the molten metal. Derived. Here, a casting having a desired cross-sectional shape can be continuously cast by deriving and cooling the molten metal through a shape determining member installed in the vicinity of the molten metal surface.

In a normal continuous casting method, the shape in the longitudinal direction is defined along with the cross-sectional shape by the mold. In particular, in the continuous casting method, since the solidified metal (that is, the casting) needs to pass through the mold, the cast casting has a shape extending linearly in the longitudinal direction.
On the other hand, the shape defining member in the free casting method defines only the cross-sectional shape of the casting, and does not define the shape in the longitudinal direction. And since a shape prescription | regulation member can move to the direction (namely, horizontal direction) parallel to a molten metal surface, the casting in which the shape of a longitudinal direction is various is obtained. For example, Patent Document 1 discloses a hollow casting (that is, a pipe) that is formed in a zigzag shape or a spiral shape instead of being linear in the longitudinal direction.

JP 2012-61518 A

The inventor has found the following problems.
In the free casting method described in Patent Document 1, since the molten metal led out through the shape defining member is cooled only by the cooling gas, there is a problem in terms of productivity because the casting speed is slow.

  This invention is made | formed in view of the above, Comprising: It aims at providing the pulling-up-type continuous casting apparatus and pull-up-type continuous casting method which are faster in casting speed and excellent in productivity.

The up-drawing continuous casting apparatus according to one aspect of the present invention is as follows.
A holding furnace for holding molten metal;
A shape determining member that is installed in the vicinity of the molten metal surface of the molten metal held in the holding furnace and that defines the cross-sectional shape of a casting to be cast by passing the molten metal,
A cooling unit for cooling and solidifying the molten metal that has passed through the shape determining member;
A molten metal cooling section that lowers the temperature of the molten metal held in the holding furnace. With such a configuration, the casting speed can be increased and the productivity can be improved.

It is preferable that the molten metal cooling part is provided directly below the shape defining member. Thereby, the temperature of the molten metal located directly under the shape defining member can be lowered in a short time, and the casting speed can be increased.
Moreover, it is preferable to further include an actuator for moving the molten metal cooling section in the vertical direction inside the holding furnace.
Furthermore, it is preferable that the cooling gas passes through the molten metal cooling section. Moreover, it is preferable that the said molten metal cooling part consists of ceramics.

  On the other hand, it is preferable to further include a partition wall that surrounds the molten metal, and an atmosphere temperature adjustment unit that adjusts the temperature of the atmosphere surrounded by the partition wall. Thereby, the quality of a casting can be stabilized.

The up-drawing continuous casting method according to one aspect of the present invention is as follows.
Installing a shape defining member that defines a cross-sectional shape of a casting to be cast in the vicinity of a molten metal surface of a molten metal held in a holding furnace;
Lowering the temperature of the molten metal held in the holding furnace by the molten metal cooling section provided in the holding furnace;
Passing the shape-defining member through the molten metal whose temperature has been lowered;
Cooling the molten metal that has been pulled up after passing through the shape determining member. With such a configuration, the casting speed can be increased and the productivity can be improved.

It is preferable that the molten metal cooling part is provided directly below the shape defining member. Thereby, the temperature of the molten metal located directly under the shape defining member can be lowered in a short time, and the casting speed can be increased.
Moreover, it is preferable to move the molten metal cooling part in the vertical direction inside the holding furnace.
Furthermore, it is preferable to introduce a cooling gas into the molten metal cooling section. Moreover, it is preferable that the molten metal cooling part is made of ceramics.

  On the other hand, it is preferable to surround the molten metal with a partition wall and adjust the temperature of the atmosphere surrounded by the partition wall. Thereby, the quality of a casting can be stabilized.

The up-drawing continuous casting apparatus according to one aspect of the present invention is as follows.
A holding furnace for holding molten metal;
A shape determining member that is installed in the vicinity of the molten metal surface of the molten metal held in the holding furnace and that defines the cross-sectional shape of a casting to be cast by passing the molten metal,
A cooling unit that cools and solidifies the molten metal that has passed through the shape determining member by a starter,
The starter includes a cooling mechanism integrated with the starter. With such a configuration, the casting speed can be increased and the productivity can be improved.

  It is preferable that the cooling mechanism includes a pipe that is attached to the starter and into which a refrigerant is introduced. Or it is preferable that the said cooling mechanism is the said starter itself which consists of a pipe into which a refrigerant | coolant is introduce | transduced.

The up-drawing continuous casting method according to one aspect of the present invention is as follows.
Installing a shape defining member that defines a cross-sectional shape of a casting to be cast in the vicinity of a molten metal surface of a molten metal held in a holding furnace;
Passing the shape determining member with a starter and pulling up the molten metal;
Cooling and solidifying the molten metal that has been pulled up through the shape determining member,
The starter is cooled by a cooling mechanism integrated with the starter. With such a configuration, the casting speed can be increased and the productivity can be improved.

  Preferably, the cooling mechanism is configured by attaching a pipe to the starter and introducing a refrigerant into the pipe. Or it is preferable to comprise the said cooling mechanism by introduce | transducing a refrigerant | coolant inside the said starter itself which consists of pipes.

  According to the present invention, it is possible to provide a pulling-up-type continuous casting apparatus and a pulling-up-type continuous casting method that are faster in casting speed and excellent in productivity.

1 is a cross-sectional view of a free casting apparatus according to Embodiment 1. FIG. It is a top view of the internal shape defining member 102a and the external shape defining member 102b. It is a top view which shows the specific structural example of the molten metal cooler 107. FIG. It is a top view which shows the other specific structural example of the molten metal cooler. It is sectional drawing of the free casting apparatus which concerns on Embodiment 2. FIG. It is sectional drawing of the free casting apparatus which concerns on Embodiment 3. It is sectional drawing of the free casting apparatus which concerns on Embodiment 4.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiment. In addition, for clarity of explanation, the following description and drawings are simplified as appropriate.

(Embodiment 1)
First, with reference to FIG. 1, the free casting apparatus (pull-up type continuous casting apparatus) according to Embodiment 1 will be described. 1 is a cross-sectional view of a free casting apparatus according to Embodiment 1. FIG. As shown in FIG. 1, a free casting apparatus according to Embodiment 1 includes a molten metal holding furnace 101, an internal shape defining member 102a, an external shape defining member 102b, support rods 103 and 104, an actuator 105, a cooling gas nozzle 106, and a molten metal cooler. 107, a refrigerant pipe 108, and an actuator 109 are provided.

  The molten metal holding furnace 101 accommodates a molten metal M1 such as aluminum or an alloy thereof and holds it at a predetermined temperature. In the example of FIG. 1, since the molten metal is not replenished to the molten metal holding furnace 101 during casting, the surface of the molten metal M1 (that is, the molten metal surface) decreases as the casting progresses. On the other hand, the molten metal may be replenished to the molten metal holding furnace 101 at any time during casting to keep the molten metal surface constant. As a matter of course, the molten metal M1 may be another metal or alloy other than aluminum.

  The internal shape defining member 102a and the external shape defining member 102b are made of, for example, ceramics or stainless steel, and are disposed in the vicinity of the molten metal surface. In the example of FIG. 1, the inner shape defining member 102a and the outer shape defining member 102b are arranged so as to contact the molten metal surface. However, the inner shape defining member 102a and the outer shape defining member 102b may be installed such that their main surfaces on the lower side (the hot water surface side) do not contact the hot water surface. Specifically, a predetermined gap (for example, about 0.5 mm) may be provided between the main surface on the lower side of the inner shape defining member 102a and the outer shape defining member 102b and the molten metal surface.

  The internal shape defining member 102a defines the internal shape of the casting M3 to be cast, and the external shape defining member 102b defines the external shape of the cast M3 to be cast. The casting M3 shown in FIG. 1 is a hollow casting (that is, a pipe) having a horizontal cross section (hereinafter referred to as a transverse section) having a tubular shape. Specifically, the inner shape defining member 102a defines the inner diameter of the cross section of the casting M3, and the outer shape defining member 102b defines the outer diameter of the cross section of the casting M3.

  FIG. 2 is a plan view of the inner shape defining member 102a and the outer shape defining member 102b. Here, the cross-sectional views of the internal shape determining member 102a and the external shape determining member 102b in FIG. 1 correspond to the II cross-sectional view in FIG. As shown in FIG. 2, the external shape defining member 102b has, for example, a rectangular planar shape, and has a circular opening at the center. The internal shape defining member 102a has a circular planar shape and is disposed at the center of the opening of the external shape defining member 102b. A gap between the inner shape determining member 102a and the outer shape determining member 102b becomes a molten metal passage portion 102c through which the molten metal passes. As described above, the shape defining member 102 includes the inner shape defining member 102a, the external shape defining member 102b, and the molten metal passage portion 102c.

  As shown in FIG. 1, the molten metal M1 is pulled up following the casting M3 by its surface film and surface tension, and passes through the molten metal passage portion 102c. Here, the molten metal pulled up from the molten metal surface following the casting M3 by the surface film or surface tension of the molten metal is referred to as a retained molten metal M2. Further, the interface between the casting M3 and the retained molten metal M2 is a solidification interface.

  The support rod 103 supports the internal shape defining member 102a, and the support rod 104 supports the external shape defining member 102b. The support rods 103 and 104 can maintain the positional relationship between the internal shape defining member 102a and the external shape defining member 102b. Here, if the support rod 103 has a pipe structure, a cooling gas is allowed to flow therethrough, and a blow hole is provided in the internal shape defining member 102a, the casting M3 can be cooled also from the inside.

  Both support rods 103 and 104 are connected to the actuator 105. By the actuator 105, the support rods 103 and 104 can move in the vertical direction (vertical direction) and the horizontal direction while maintaining the positional relationship between the internal shape defining member 102a and the external shape defining member 102b. With such a configuration, the inner shape defining member 102a and the outer shape defining member 102b can be moved downward as the molten metal surface is lowered due to the progress of casting. Further, since the inner shape defining member 102a and the outer shape defining member 102b can be moved in the horizontal direction, the shape of the casting M3 in the longitudinal direction can be freely changed.

  The cooling gas nozzle (cooling unit) 106 is for blowing a cooling gas (air, nitrogen, argon, etc.) on the casting M3 to cool it. While the casting M3 is pulled up by a pulling machine (not shown) connected to the starter ST and the casting M3 is cooled by the cooling gas, the retained molten metal M2 near the solidification interface is sequentially solidified to form the casting M3. . Here, in order to increase the heat removal from the casting M3 and increase the casting speed, it is preferable to lower the temperature of the cooling gas as much as possible. For example, a cryogenic gas such as a cooling gas obtained by vaporizing a liquefied gas (for example, liquid nitrogen or liquid argon) or a cooling gas cooled by the liquefied gas can be used.

  The molten metal cooler (molten cooling section) 107 is for lowering the temperature of the molten metal M1 located immediately below the inner shape defining member 102a and the outer shape defining member 102b. Only when it is desired to lower the temperature of the molten metal M1, the refrigerant is circulated inside. The point provided with the molten metal cooler 107 is one characteristic of the free casting apparatus according to the present embodiment.

  The refrigerant pipe 108 introduces the refrigerant into the molten metal cooler 107 and leads out the refrigerant that has circulated through the molten metal cooler 107 and deprived of the heat of the molten metal M1. The refrigerant pipe 108 supports the molten metal cooler 107. The refrigerant is not particularly limited, but a cooling gas (air, nitrogen, argon, etc.) is preferable from the viewpoint of safety. In addition, as a refrigerant circulation method, a pressure absorption type is preferable to a pressure type from the viewpoint of safety.

  The materials of the molten metal cooler 107 and the refrigerant pipe 108 are not particularly limited, but may be ceramics or stainless steel, for example. Further, in the case of stainless steel, it is preferable to take measures against melting damage such as wrapping a heat-resistant tape around a portion that contacts the molten metal M1.

  FIG. 3 is a plan view illustrating a specific configuration example of the molten metal cooler 107. In FIG. 3, the internal shape defining member 102a and the support rod 103 are also shown by dotted lines so that the planar positional relationship can be understood. The molten metal cooler 107 shown in FIG. 3 is composed of a single pipe formed in a spiral shape. That is, the molten metal cooler 107 and the refrigerant pipe 108 are integrally formed. As shown in FIG. 3, a circular opening is provided at the center of the molten metal cooler 107 so that the support rod 103 can pass through the opening. With such a configuration, interference between the support rod 103 and the molten metal cooler 107 is prevented.

FIG. 4 is a plan view showing another specific configuration example of the molten metal cooler 107. Also in FIG. 4, the internal shape defining member 102 a and the support rod 103 are also indicated by dotted lines so that the planar positional relationship can be understood. The molten metal cooler 107 shown in FIG. 4 includes a single pipe meandering as a whole in which straight portions 107a and U-shaped portions 107b are alternately repeated. That is, the molten metal cooler 107 and the refrigerant pipe 108 are integrally formed. As shown in FIG. 4, in the center part of the molten metal cooler 107, the space | interval of two adjacent linear parts 107a is large, and the support rod 103 can pass through here. With such a configuration, interference between the support rod 103 and the molten metal cooler 107 is prevented.
The configuration of the molten metal cooler 107 shown in FIGS. 3 and 4 is merely an example, and various other configuration examples are conceivable.

  A refrigerant pipe 108 is connected to the actuator 109. As shown in FIG. 1, the molten metal cooler 107 can be moved up and down by the actuator 109 inside the molten metal M1. Further, it can be moved in the horizontal direction in synchronization with the internal shape defining member 102a and the external shape defining member 102b.

  When lowering the temperature of the molten metal M1 located immediately below the internal shape defining member 102a and the external shape defining member 102b, the coolant is circulated in the molten metal cooler 107 to raise the molten metal cooler 107, and the internal shape defining member 102a and the outside What is necessary is just to approach the shape definition member 102b. On the other hand, in other cases, the circulation of the refrigerant in the molten metal cooler 107 may be stopped, the molten metal cooler 107 may be lowered, and kept away from the internal shape defining member 102a and the external shape defining member 102b.

The effect of the molten metal cooler 107 will be described in more detail.
The temperature of the molten metal M1 is always maintained at a predetermined appropriate temperature by the molten metal holding furnace 101. Here, the appropriate temperature is a temperature for maintaining the solidification interface at an appropriate height. The height of the solidification interface is maintained by the balance between the heat removal from the casting M3 and the pulling speed. For example, when the thickness of the casting M3 is increased during casting, the heat capacity of the retained molten metal M2 increases, so that the above balance is lost, the position of the solidification interface increases, and a desired shape is difficult to obtain. That is, moldability deteriorates.

  At this time, in order to return the position of the solidification interface to the original appropriate height, it is necessary to slow down the casting speed or lower the temperature of the molten metal M1 unless the heat removal from the casting M3 can be increased. In order to lower the temperature of the molten metal M1, it is sufficient to lower the set temperature of the molten metal holding furnace 101. However, it takes time for the entire molten metal M1 to actually decrease to the set temperature. In the conventional free casting apparatus, it is necessary to slow down the casting speed until the temperature of the entire molten metal M1 falls to the set temperature.

  On the other hand, since the free casting apparatus according to the present embodiment includes the molten metal cooler 107, the temperature of the molten metal M1 can be lowered in a short time. In particular, since the molten metal cooler 107 is located immediately below the inner shape defining member 102a and the outer shape defining member 102b, the vicinity of the inner shape defining member 102a and the outer shape defining member 102b (more specifically, the inner shape defining member 102a and The temperature of only the molten metal M1 (just below the external shape defining member 102b) can be lowered in a short time. Therefore, it is not necessary to reduce the casting speed, and the casting speed can be increased as compared with the conventional free casting apparatus. As a result, casting time is shortened and productivity is improved.

Next, the free casting method according to Embodiment 1 will be described with reference to FIG.
First, the starter ST is lowered, and the tip of the starter ST is immersed in the molten metal M1 through the molten metal passage portion 102c between the internal shape defining member 102a and the external shape defining member 102b.

  Next, the starter ST is started to be pulled up at a predetermined speed. Here, even if the starter ST is separated from the molten metal surface, the retained molten metal M2 pulled up from the molten metal surface following the starter ST is formed by the surface film or surface tension. As shown in FIG. 1, the retained molten metal M2 is formed in the molten metal passage portion 102c between the inner shape defining member 102a and the outer shape defining member 102b. That is, the shape is imparted to the retained molten metal M2 by the inner shape defining member 102a and the outer shape defining member 102b.

  Next, since the starter ST is cooled by the cooling gas blown from the cooling gas nozzle 106, the retained molten metal M2 is solidified in order from the upper side to the lower side, and the casting M3 grows. In this way, the casting M3 can be continuously cast.

(Embodiment 2)
Next, a free casting apparatus according to Embodiment 2 will be described with reference to FIG. FIG. 5 is a cross-sectional view of the free casting apparatus according to the second embodiment. As shown in FIG. 5, the free casting apparatus according to Embodiment 2 includes a molten metal holding furnace 101, an internal shape defining member 102a, an external shape defining member 102b, support rods 103 and 104, an actuator 105, a cooling gas nozzle 106, and a molten metal cooler. 107, a refrigerant pipe 108, an actuator 109, a partition wall 110, and an ambient temperature adjusting unit 111. That is, in addition to the free casting apparatus according to the first embodiment shown in FIG. 1, a partition wall 110 and an atmospheric temperature adjustment unit 111 are provided.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  As shown in FIG. 5, in the free casting apparatus according to the second embodiment, the molten metal M <b> 1 and the casting M <b> 3 to be cast are stored in a space partitioned by a partition wall 110. An ambient temperature adjusting unit 111 is provided on the ceiling of the partition wall 110.

  With such a configuration, the temperature in the space partitioned by the partition wall 110 is held at a predetermined temperature (for example, 25 ° C.) by the ambient temperature adjusting unit 111. Since the temperature of the atmosphere of the molten metal M1 and the casting M3 to be cast is kept constant, the quality of the casting M3 can be stabilized more than the automatic casting apparatus according to the first embodiment. Further, if the temperature of the atmosphere is maintained at 25 ° C., for example, the temperature of the atmosphere is lowered as compared with the case where the temperature of the atmosphere is not controlled, so that the casting speed can be increased as compared with the automatic casting apparatus according to the first embodiment. In addition, the installation place of the atmospheric temperature adjustment part 111 is not specifically limited. Further, as shown in FIG. 5, a vent 110a may be provided in the upper part of the partition wall 110 to release the hot air trapped in the partitioned space.

(Embodiment 3)
Next, a free casting apparatus according to Embodiment 3 will be described with reference to FIG. FIG. 6 is a cross-sectional view of the free casting apparatus according to the third embodiment. As shown in FIG. 6, the free casting apparatus according to Embodiment 3 includes a molten metal holding furnace 101, an internal shape defining member 102a, an external shape defining member 102b, support rods 103 and 104, an actuator 105, a cooling gas nozzle 106, and a refrigerant pipe. 112 is provided. That is, the refrigerant pipe 112 is provided instead of the molten metal cooler 107, the refrigerant pipe 108, and the actuator 109 in the free casting apparatus according to the first embodiment shown in FIG.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  As shown in FIG. 6, the free casting apparatus according to the third embodiment includes a refrigerant pipe (cooling mechanism) 112 that is spirally wound around the starter ST. That is, a cooling mechanism integrated with the starter ST is provided. With such a configuration, the starter ST is cooled. The refrigerant is not particularly limited, and for example, a cooling gas (air, nitrogen, argon, etc.) or cooling water can be used. By cooling the starter ST, heat removal from the casting M3 is increased, and the casting speed can be increased while maintaining good formability.

As a matter of course, the casting speed can be increased by combining the first embodiment and the third embodiment or the second embodiment and the third embodiment.
Yes.

(Embodiment 4)
Next, a free casting apparatus according to Embodiment 4 will be described with reference to FIG. FIG. 7 is a cross-sectional view of the free casting apparatus according to the fourth embodiment. As shown in FIG. 7, the free casting apparatus according to Embodiment 4 includes a molten metal holding furnace 101, an external shape defining member 102 b, a support rod 104, an actuator 105, and a cooling gas nozzle 106. That is, the internal shape defining member 102a, the support rod 104, and the refrigerant pipe 112 in the free casting apparatus according to the third embodiment shown in FIG. 6 are not provided. On the other hand, the starter ST itself is a refrigerant pipe (cooling mechanism). That is, the free casting apparatus according to the fourth embodiment also includes a cooling mechanism integrated with the starter ST.
Since other configurations are the same as those of the third embodiment, description thereof is omitted.

  As shown in FIG. 7, the casting M3 cast by the free casting apparatus according to Embodiment 4 is not a hollow structure (pipe) but a solid structure (rod). Therefore, only the external shape defining member 102b according to the above embodiment is used without using the internal shape defining member 102a. In this case, the opening provided in the external shape defining member 102b becomes the molten metal passage 102c as it is.

  In the free casting apparatus according to Embodiment 4, the starter ST is cooled because the starter ST itself is a refrigerant pipe. Although a refrigerant | coolant is not specifically limited, For example, cooling gas (air, nitrogen, argon, etc.) can be used. Further, the flow rate of the refrigerant may be controlled at the start of casting and during casting. Specifically, the flow rate of the refrigerant is reduced at the start of casting than during casting. Furthermore, cooling water can be used during casting (after casting has progressed to some extent). Further, cooling gas may be used at the start of casting, and cooling water may be used during casting.

In the free casting apparatus according to the fourth embodiment, by cooling the starter ST, similarly to the third embodiment, the heat removal from the casting M3 is increased, and the casting speed can be increased.
Further, since the starter ST is cooled, even a material having a melting point lower than the molten metal temperature can be used as the starter ST.
Furthermore, the refrigerant temperature on the inlet side and the refrigerant temperature on the outlet side can be monitored and fed back to the casting control.
After casting, heat treatment for structure control can be performed by circulating heat treatment oil in the starter ST instead of the refrigerant.

  In addition, while a normal starter ST is cut off after casting, the starter ST according to Embodiment 4 can be used as a product as it is. For example, a pipe for a heat exchanger can be used as a normal starter ST. Further, a more complicated cooling circuit can be used as the starter ST. Further, by casting the starter ST into the molten metal, it is possible to form a casting having a pipe inside.

As a matter of course, the casting speed can be increased by combining the first embodiment and the fourth embodiment or the second embodiment and the fourth embodiment.
Yes.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.

101 Molten metal holding furnace 102 Shape defining member 102a Internal shape defining member 102b External shape defining member 102c Melt passage portion 103, 104 Support rod 105, 109 Actuator 106 Cooling gas nozzle 107 Molten metal cooler 107a Linear portion 107b U-shaped portion 108, 112 Refrigerant piping 110 Partition wall 110a Ventilation hole 111 Atmosphere temperature adjusting part M1 Molten metal M2 Holding molten metal M3 Cast ST Starter

Claims (18)

A holding furnace for holding molten metal;
A shape determining member that is installed in the vicinity of the molten metal surface of the molten metal held in the holding furnace and that defines the cross-sectional shape of a casting to be cast by passing the molten metal,
A cooling unit for cooling and solidifying the molten metal that has passed through the shape determining member;
A pulling-up-type continuous casting apparatus, comprising: a molten metal cooling unit that lowers the temperature of the molten metal held in the holding furnace.   The up-drawing continuous casting apparatus according to claim 1, wherein the molten metal cooling section is provided directly below the shape defining member.   The pulling-up-type continuous casting apparatus according to claim 1 or 2, further comprising an actuator that moves the molten metal cooling section in the vertical direction inside the holding furnace.   The pulling-up-type continuous casting apparatus according to any one of claims 1 to 3, wherein a cooling gas passes through the inside of the molten metal cooling unit.   The pulling-up-type continuous casting apparatus according to any one of claims 1 to 4, wherein the molten metal cooling section is made of ceramics. A partition wall surrounding the molten metal;
The pulling-up-type continuous casting apparatus according to any one of claims 1 to 5, further comprising an atmosphere temperature adjusting unit that adjusts the temperature of the atmosphere surrounded by the partition wall. Installing a shape defining member that defines a cross-sectional shape of a casting to be cast in the vicinity of a molten metal surface of a molten metal held in a holding furnace;
Lowering the temperature of the molten metal held in the holding furnace by the molten metal cooling section provided in the holding furnace;
Passing the shape-defining member through the molten metal whose temperature has been lowered;
And a step of cooling the molten metal that has been pulled up after passing through the shape defining member.   The pulling-up-type continuous casting method according to claim 7, wherein the molten metal cooling part is provided directly below the shape defining member.   The pulling-up-type continuous casting method according to claim 7 or 8, wherein the molten metal cooling section is moved in the vertical direction inside the holding furnace.   The pulling-up-type continuous casting method according to any one of claims 7 to 9, wherein a cooling gas is introduced into the molten metal cooling section.   The pulling-up-type continuous casting method according to any one of claims 7 to 10, wherein the molten metal cooling section is made of ceramics.   The pulling-up-type continuous casting method according to any one of claims 7 to 11, wherein the molten metal is surrounded by a partition wall, and a temperature of an atmosphere surrounded by the partition wall is adjusted. A holding furnace for holding molten metal;
A shape determining member that is installed in the vicinity of the molten metal surface of the molten metal held in the holding furnace and that defines the cross-sectional shape of a casting to be cast by passing the molten metal,
A cooling unit that cools and solidifies the molten metal that has passed through the shape determining member by a starter,
An up-drawing continuous casting apparatus, wherein the starter includes a cooling mechanism integrated with the starter.   The pulling-up-type continuous casting apparatus according to claim 13, wherein the cooling mechanism includes a pipe attached to the starter and into which a refrigerant is introduced.   The up-drawing continuous casting apparatus according to claim 13, wherein the cooling mechanism is the starter itself including a pipe into which a refrigerant is introduced. Installing a shape defining member that defines a cross-sectional shape of a casting to be cast in the vicinity of a molten metal surface of a molten metal held in a holding furnace;
Passing the shape determining member with a starter and pulling up the molten metal;
Cooling and solidifying the molten metal that has been pulled up through the shape determining member,
A pulling-up-type continuous casting method in which the starter is cooled by a cooling mechanism integrated with the starter.   The pulling-up-type continuous casting method according to claim 16, wherein the cooling mechanism is configured by attaching a pipe to the starter and introducing a refrigerant into the pipe.   The pulling-up-type continuous casting method according to claim 16, wherein the cooling mechanism is configured by introducing a refrigerant into the starter itself made of a pipe.

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