JP2002254146A - Continuous casting device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deflection of a molten metal to be fed from a tundish into a mold. SOLUTION: The objective device is composed so as to move a stopper 7 for adjusting the feed amount of a molten metal 2 alternately to an L face side and F face one when feeding the molten metal 2 from a tundish 1 into a mold 5. Thereby, the metal 2 from the tundish 1 is poured into a nozzle 3 from both sides of F face and L face and is flowed symmetrically on both sides within the nozzle 3 to uniformly feed the metal 2 into the mold 5. Therefore, a good quality cast piece can be formed regardless of the feed amount per unit time of the metal 2 to be fed into the mold.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a continuous casting apparatus and a continuous casting method.

[0002]

2. Description of the Related Art In a continuous casting apparatus, as shown in FIG. 6, a molten metal 2 stored in a preheating tank called a tundish 1 is supplied to a mold 5 through a nozzle 3;
The slab 6 was formed by cooling and solidifying the molten metal 2 supplied by the mold 5. The nozzle 3 has a discharge port 4 for discharging the molten metal 2 flowing through the nozzle 3.
The molten metal 2 injected from the tundish 1 was supplied to the mold 5 from the discharge port 4.

The tundish 1 is provided with a stopper 7 for adjusting the opening of an injection port for injecting the molten metal 2 into the nozzle 3, and the stopper control unit 9 constituted by a flow rate control unit 10 controls the stopper 7. By controlling the operation of a driving device 60 for driving the mold 5 through the nozzle 3.
The supply amount of the molten metal 2 to be supplied per unit time was adjusted. That is, the stopper 7 is moved according to the control from the flow rate control unit 10, and the opening degree of the injection port for injecting the molten metal 2 from the tundish 1 into the nozzle 3 is changed, so that the inside of the mold 5 is The supply amount of the molten metal 2 per unit time was adjusted so that the molten metal level 8 became a predetermined level.

[0004] Specifically, when the molten metal 2 is not supplied from the tundish 1 to the mold 5, the injection port is completely closed by the stopper 7 to make the opening degree zero. As the supply amount of the molten metal 2 supplied from the tundish 1 to the mold 5 per unit time increases, the stopper 7 is moved to the L surface side while being in contact with the inner wall of the tundish 1, and the The opening was increased. When the molten metal 2 is supplied from the tundish 1 to the mold 5 by maximizing the supply amount per unit time, the opening of the injection port is set to the maximum (full open) while making contact with the inner wall of the tundish 1. Thus, the stopper 7 is further moved to the L-plane side.

[0005] Here, as shown in FIG.
Non-fixation of the slab 6 formed in the mold 5 (Loos
e) plane. Further, the fixed (fixed) surface of the slab 6 formed in the mold 5 with respect to the L surface is referred to as an F surface.

[0006]

However, in the conventional continuous casting apparatus as shown in FIG.
Has been moved only in the direction of the L surface with respect to the position of the stopper 7 at which the opening degree becomes zero, while always in contact with the inner wall of the tundish 1 on the L surface.

Therefore, except when the opening of the injection port is set to zero or the maximum, as shown by arrows in FIG. 6, the molten metal 2 supplied from the tundish 1 to the mold 5 is always the same as the tundish 1. The liquid was injected into the nozzle 3 from the F surface side, and was concentrated and flowed on the L surface side in the nozzle 3. Then, L in the mold 5 is discharged from the discharge port 4 provided in the nozzle 3.
The molten metal 2 discharged intensively on the surface side and further discharged on the L surface side in the mold 5 was flowing to the F surface side.

When the molten metal 2 discharged to the L side in the mold 5 flows to the F side, bubbles are generated in the supplied molten metal 2 or the injected molten metal 2 is oxidized. (For example, if the molten metal 2 is aluminum, alumina is generated). As a result, there is a problem that surface flaws and the like are generated on the F surface of the slab 6 formed (manufactured) by the mold 5 and the quality of the formed slab 6 is deteriorated.

The present invention has been made to solve such a problem, and an object of the present invention is to prevent the molten metal supplied from a tundish to a mold from being biased.

[0010]

SUMMARY OF THE INVENTION A continuous casting apparatus according to the present invention is a continuous casting apparatus for supplying molten metal from a preheating tank to a mold via a nozzle to form a slab. A supply amount adjusting means for adjusting an amount of molten metal supplied per unit time, a driving means for driving the supply amount adjusting means, and a control means for controlling the operation of the driving means; When supplying the molten metal to the mold from above, the supply amount adjusting means is vibrated.

According to another feature of the continuous casting apparatus of the present invention, the control means controls the opening degree of the supply amount control means to a predetermined opening degree in accordance with the supply amount of the molten metal per unit time. And a vibration control means for controlling the operation of the driving means so as to vibrate the supply amount adjusting means.

Another feature of the continuous casting apparatus of the present invention is that the supply amount adjusting means vibrates perpendicularly to a flowing direction of the molten metal in the nozzle. Another feature of the continuous casting apparatus of the present invention is that the supply amount adjusting means vibrates in parallel with the direction from the F plane to the L plane of the slab to be formed.

Another feature of the continuous casting apparatus of the present invention is that the supply amount adjusting means is a stopper for controlling the amount of molten metal injected from the preheating tank to the nozzle. . Another feature of the continuous casting apparatus of the present invention is that the supply amount adjusting means is a movable plate of the nozzle.

Another feature of the continuous casting apparatus of the present invention is a continuous casting apparatus for supplying molten metal from a preheating tank to a mold through a nozzle to form a slab. A first movable plate and a second movable plate for adjusting an amount of molten metal supplied to the mold per unit time;
Movable plate, driving means for driving the first and second movable plates, and control means for controlling the driving operation of the driving means to control the positions of the first and second movable plates. Wherein the first and second movable plates are symmetrically movable with respect to a center axis of the nozzle.

Further, the continuous casting method of the present invention is a continuous casting method in which molten metal is supplied from a preheating tank to a mold through a nozzle to form a cast piece, and the molten metal is supplied from the preheating tank to the mold. When supplying, while adjusting the supply amount of the molten metal per unit time by the supply amount adjusting means,
It is characterized in that the supply amount adjusting means is vibrated.

Another feature of the continuous casting method of the present invention is that the supply amount adjusting means is vibrated perpendicularly to the flowing direction of the molten metal in the nozzle. Another feature of the continuous casting method of the present invention is that the supply amount adjusting means vibrates in parallel with the direction from the F plane to the L plane of the slab to be formed.

Another feature of the continuous casting method of the present invention is a continuous casting method in which molten metal is supplied from a preheating tank to a mold via a nozzle to form a cast piece, and A first movable plate and a second movable plate for adjusting an amount of molten metal supplied to a mold per unit time are provided on the nozzle, and the first and second movable plates are symmetrically arranged with respect to a center axis of the nozzle. The movable plate is controlled to be movable.

According to the present invention configured as described above, when the molten metal is supplied from the preheating tank to the mold via the nozzle, the supply amount of the molten metal from the preheating tank to the mold per unit time is adjusted. Because the supply amount adjusting means is vibrated, regardless of the supply amount of the molten metal per unit time, the flow of the molten metal in the nozzle is not biased and is symmetric with respect to the vibration direction. Thus, the molten metal can be uniformly supplied into the mold.

According to another feature of the present invention, the nozzle is provided with a first movable plate and a second movable plate for adjusting the supply amount of molten metal supplied from the preheating tank to the mold per unit time. Since the first and second movable plates are movably controlled symmetrically with respect to the center axis of the nozzle, the molten metal passes through the center of the nozzle regardless of the supply amount of the molten metal per unit time. The molten metal can be made to flow, and the molten metal can be uniformly supplied into the mold.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a continuous casting apparatus and a continuous casting method according to the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a diagram showing a configuration example of a continuous casting apparatus according to a first embodiment. In FIG. 1, reference numeral 1 denotes a preheating tank called a “dandesh”.
A molten metal 2 supplied from a molten steel pot (not shown) is stored therein.

Reference numeral 3 denotes a hollow nozzle for supplying the molten metal 2 stored in the dish 1 to the mold 5. The nozzle 3 is provided with a discharge port 4 for supplying the molten metal 2 to the mold 5, and the molten metal 2 supplied from the tundish 1 flows through the nozzle 3 and enters the mold 5 from the discharge port 4. Supplied.

The mold 5 is for cooling the molten metal 2 supplied through the nozzle 3 to form a slab 6. Here, the supply amount of the molten metal 2 supplied from the tundish 1 to the mold 5 per unit time is adjusted so that the molten metal level 8 in the mold 5 becomes a predetermined level.
Is adjusted by

The stopper control unit 9 ′ includes a flow control unit 10
And the vibration control unit 11 for controlling the operation of the driving device 70 of the stopper 7. The driving device 70
Is constituted by an opening / closing drive unit 71 and a vibration drive unit 72. The flow controller 10 controls the supply amount of the molten metal 2 supplied from the tundish 1 to the mold 5 per unit time. That is, the flow controller 10 in the stopper controller 9 ′ controls the opening of the injection port for injecting the molten metal 2 from the tundish 1 into the nozzle 3, and controls the opening / closing drive 71 to adjust the opening of the stopper 7. The level of the molten metal 8 of the mold 5 is adjusted to a predetermined level.

Further, the vibration control unit 11 includes the tundish 1
When the molten metal 2 is supplied to the mold 5 from
The stopper 7 is connected to the inner wall on the L surface side of the tundish 1 by F
The stopper 7 is vibrated by controlling the vibration drive unit 72 so as to alternately contact the inner wall on the surface side (in the FL direction). That is, first, the stopper 7 is set in the tundish 1
The molten metal 2 is injected into the nozzle 3 from the F surface side, and then the stopper 7 is driven so as to be in contact with the F surface side of the tundish 1 to drive the L surface side. , The molten metal 2 is injected into the nozzle 3. By repeating the above operation, the stopper 7 is vibrated, and the molten metal 2 is alternately injected into the nozzle 3 from the L surface side and the F surface side of the nozzle 3.

Here, as shown in FIG. 1, the F surface side is used to fix a slab 6 formed in the mold 5 (Fixe).
d) The surface side, and the L surface side is the non-fixed (Loose) surface side of the slab 6 formed in the mold 5.

Next, the operation of the continuous casting apparatus shown in FIG. 1 will be described. (When the opening of the injection port is zero) When the molten metal 2 is not supplied from the tundish 1 to the mold 5, that is, when the opening of the injection port for injecting the molten metal 2 from the tundish 1 to the nozzle 3 is set to zero. In the meantime, the flow control unit 10 controls the opening / closing drive unit 71 so that the stopper 7 completely closes the injection port. Further, the vibration controller 11 controls the vibration driver 72 so as not to vibrate the stopper 7.

(When the opening degree of the injection port is larger than zero and less than the maximum value) When the molten metal 2 is supplied from the tundish 1 to the mold 5 with a supply amount smaller than the maximum supply amount, The molten metal 2 is cast into a mold 5
In this case, the flow controller 10 controls the opening / closing drive unit 71 so that the supply amount of the molten metal 2 supplied to the mold 5 per unit time becomes a predetermined supply amount. To adjust. Further, the vibration control unit 11 controls the stopper 7 so that the opening of the inlet becomes the instructed opening when the stopper 7 is moved to the F surface side and the L surface side in the tundish 1, respectively. The stopper 7 is alternately driven to the F-plane side and the L-plane side by controlling the vibration driving unit 72 so as to vibrate symmetrically in the FL direction.

With the above operation, when the stopper 7 is driven to the L side, the molten metal 2 injected into the nozzle 3 from the tundish 1 is injected from the F side of the tundish 1 and the L side of the nozzle 3 Try to concentrate and flow.
On the other hand, the stopper 7 is thereafter driven to the F side, whereby the molten metal 2 is injected into the nozzle 3 from the L side of the tundish 1. As a result, the molten metal 2 injected from the tundish 1 into the nozzle 3 is injected from not only one of the F surface side and the L surface side, but also from both the F surface side and the L surface side. Further, by vibrating the stopper 7 by the vibration driving unit 72, the molten metal 2 is injected into the nozzle 3 alternately from the F surface side and the L surface side. And flows symmetrically on the L plane side.

(When the opening degree of the injection port is the maximum value) When the molten metal 2 is supplied from the tundish 1 to the mold 5 at the maximum supply amount, that is, a note for injecting the molten metal 2 from the tundish 1 to the nozzle 3. When the opening degree of the inlet is maximized, the flow control unit 10 controls the opening / closing drive unit 71 so as to completely open the inlet. At this time, the vibration control unit 1
1 may control the vibration driving section 72 so as to vibrate the stopper 7 or control so as to stop at the fully open position without vibrating as in the case where the opening of the injection port is zero. You may do it.

As described in detail above, according to the first embodiment, when the molten metal 2 is supplied from the tundish 1 to the mold 5, the supply amount of the molten metal 2 supplied from the tundish 1 to the mold 5 is adjusted. The vibrating stopper 7 is alternately vibrated to the L side and the F side, that is, vibrated in the FL direction, so that not only the tundish 1 to the F side but also the molten metal is applied to the nozzle 3 from the L side. 2 can be injected.

Thus, the problem that the molten metal 2 supplied from the tundish 1 to the casting mold 5 flows on the L side or the F side in the nozzle 3 in a concentrated manner can be solved. And the molten metal 2 can be caused to flow symmetrically on the L surface side. As a result, the molten metal 2
Can be uniformly supplied, and a high quality cast piece can be formed regardless of the supply amount of the molten metal 2 supplied to the mold 5 per unit time.

(Second Embodiment) Next, a continuous casting apparatus according to a second embodiment will be described. FIG. 2 is a diagram illustrating a configuration example of a continuous casting apparatus according to a second embodiment.
In FIG. 2, the same parts as those shown in FIG. 1 are denoted by the same reference numerals, and overlapping description will be omitted.

In FIG. 2, reference numerals 12 and 13 denote plates fixed to the nozzle 3, respectively, and reference numeral 14 denotes a movable plate provided between the plates 12 and 13.
The plates 12, 13 and the movable plate 14 include
A hole for supplying the molten metal 2 from the tundish 1 to the mold 5 is provided. The plates 12, 13
The size of each hole provided in the movable plate 14 is a size included in the region of the hollow portion in the cross section of the nozzle 3 perpendicular to the flow direction of the molten metal 2.

Reference numeral 15 denotes a plate control unit, which includes a flow control unit 16 and a vibration control unit 17 and controls the operation of a driving device 80 for driving the movable plate 14.
The flow controller 16 controls the supply amount of the molten metal 2 supplied from the tundish 1 to the mold 5 per unit time. That is, the flow control unit 16 in the plate control unit 15 controls the cross-sectional area of the path for supplying the molten metal 2 from the tundish 1 to the mold 5 by controlling the operation of the opening / closing drive unit 81 that drives the movable plate 14. Adjust with. As a result, the supply amount of the molten metal 2 supplied from the tundish 1 to the mold 5 per unit time is adjusted to a predetermined amount, and the molten metal level 8 is maintained at a predetermined level.

The vibration control section 17 controls the operation of the vibration drive section 82 so that when the molten metal 2 is supplied from the tundish 1 to the casting mold 5, the F side of the slab 6 and the L
The movable plate 1 in a direction (FL direction) connecting the
4 is driven to vibrate the movable plate 14 in the FL direction. That is, first, the movable plate 14 is
And the molten metal 2 is supplied to the L surface side in the nozzle 3. Next, the movable plate 14 is driven in the direction of the F surface of the slab 6 to supply the molten metal 2 to the F surface of the nozzle. By repeating the above operation, the movable plate 14 is vibrated in the FL direction, and the molten metal 2 is cast from both sides of the nozzle 3 on the L side and the F side.
To supply.

Next, the operation of the continuous casting apparatus shown in FIG. 2 will be described. (When the opening degree is zero) When the molten metal 2 is not supplied from the tundish 1 to the mold 5, that is, when the path for supplying the molten metal 2 from the tundish 1 to the mold 5 is completely shut off, the flow control unit 16 is the movable plate 14
The opening / closing drive unit 81 is controlled so as to move either the F surface side or the L surface side. Further, the vibration control unit 17 controls the operation of the vibration driving unit 82 so as not to vibrate the movable plate 14.

(When the opening degree is larger than zero and smaller than the maximum value) When the molten metal 2 is supplied from the tundish 1 to the mold 5 with a supply amount smaller than the maximum supply amount,
When the path for supplying the molten metal 2 is not completely shut off, the flow rate control unit 16 controls the supply amount of the molten metal 2 to be supplied to the mold 5 to a predetermined supply amount per unit time. The movable plate 14 is moved by controlling the opening / closing drive unit 81. Further, the vibration control unit 17 causes the movable plate 14 to vibrate to the F surface side and the L surface side, respectively.
That is, the operation of the vibration drive unit 82 is controlled so as to symmetrically vibrate in the FL direction.

For example, when the molten metal 2 is supplied from the tundish 1 to the mold 5 with a small supply amount, FIG.
As shown in (1), the movable plate 14 is driven so as to alternately move to the F-plane side and the L-plane side with a large amplitude. When the molten metal 2 is supplied from the tundish 1 to the mold 5 with a large supply amount, as shown in FIG. 3B, the movable plate 14 is alternately moved to the F side and the L side with a small amplitude. Drive to make it. As a result, the molten metal 2 supplied from the tundish 1 to the mold 5 flows not only from one of the F surface and the L surface in the nozzle 3 but also from both sides of the F surface and the L surface. Further, the movable plate 14
Is vibrated, the molten metal 2 is alternately supplied to the F surface side and the L surface side in the nozzle 3, so that the molten metal 2 flows symmetrically on the F surface side and the L surface side in the nozzle 3. .

(When the opening degree is the maximum value) When the molten metal 2 is supplied from the tundish 1 to the mold 5 at the maximum supply amount,
That is, when the cross-sectional area of the path for supplying the molten metal 2 from the tundish 1 to the mold 5 is to be maximized, the flow control unit 16 is provided in the holes provided in the movable plate 14 and the plates 12 and 13. The operation of the opening and closing drive unit 81 is controlled so that the
Move 4. The vibration control unit 17 controls the operation of the vibration driving unit 82 so as not to vibrate the movable plate 14.

As described above, according to the second embodiment, the movable plate 14 for controlling the cross-sectional area of the path for supplying the molten metal 2 from the tundish 1 to the mold 5 is set to L
The drive is alternately performed on the surface side and the F surface side. That is, since the movable plate 14 is caused to vibrate in the FL direction, the molten metal 2 is alternately supplied to the F surface and the L surface in the nozzle 3. Thereby, the molten metal 2 supplied from the tundish 1 to the mold 5 flows symmetrically on the L surface side or the F surface side in the nozzle 3, and the molten metal 2 can be uniformly supplied to the mold 5. Thereby, regardless of the supply amount of the molten metal 2 supplied to the mold per unit time,
High quality slabs can be formed.

(Third Embodiment) Next, a continuous casting apparatus according to a third embodiment will be described. FIG. 4 is a diagram illustrating a configuration example of a continuous casting apparatus according to the third embodiment.
In FIG. 4, the same portions as those shown in FIGS. 1 and 2 are denoted by the same reference numerals, and duplicate description will be omitted. In addition, portions which are not the same as those shown in FIG.

In FIG. 4, reference numerals 18 and 19 denote plates 12
A movable plate provided between the movable plate 14 and the movable plate 13;
In the same manner as described above, a hole for supplying the molten metal 2 from the tundish 1 to the mold 5 is provided. The size of each hole provided in the movable plates 18 and 19 is a size included in a region of a hollow portion in a cross section perpendicular to the flow direction of the molten metal 2 of the nozzle 3.

Reference numeral 15 'denotes a plate control unit, which comprises a flow control unit 16 and a position control unit 20, and controls a driving operation of a driving device 90 for driving the movable plates 18 and 19. The flow control unit 16 controls the tundish 1
Of the molten metal 2 to be supplied to the casting mold 5 from the apparatus per unit time. That is, the flow rate control unit 16 in the plate control unit 15 ′ determines the cross-sectional area of the path for supplying the molten metal 2 from the tundish 1
By controlling the operation of the driving device 90 for driving the metal 8 and 19, the molten metal 2 to be supplied from the tundish 1 to the casting mold 5 is adjusted per unit time to adjust the molten metal level 8 to a predetermined level. To be retained.

Further, the position control unit 20 controls the tundish 1
When the molten metal 2 is supplied from the nozzle 3 to the mold 5, the driving device 90 is controlled so that the molten metal 2 flows through the center of the nozzle 3 and is supplied to the mold 5 from the discharge port 4.
The positions of the movable plates 18 and 19 with respect to the central axis of are controlled. For example, when reducing the area of the opening for supplying the molten metal 2 formed by the movable plates 18 and 19 to reduce the supply amount of the molten metal 2 supplied from the tundish 1 to the mold 5 per unit time , One of the movable plates 18 and 19 is moved in the direction of the L side of the slab 6, and the other movable plate is moved in the direction of the F side of the slab 6, and the opening is formed by the nozzle The positions of the movable plates 18 and 19 are controlled so as to be located at the center of the movable plate 3.

For example, as shown in FIG. 5A, the cross-sectional area of the path for supplying the molten metal 2 from the tundish 1 to the mold 5 is reduced, and Is supplied, one of the movable plates 18 and 19 is moved to the F side by a large amount,
The other of the movable plates 18 and 19 moved to the F surface side is moved to the L surface side so as to be symmetrical with respect to the central axis of the nozzle. Also, for example, by increasing the cross-sectional area of the path for supplying the molten metal 2 from the tundish 1 to the mold 5,
When a large amount of molten metal 2 is supplied from the tundish 1 to the mold 5, as shown in FIG.
One of 8 and 19 is moved to the F plane side and the other is moved to the L plane side so as to be symmetrical with respect to the center axis of the nozzle.

As described above, according to the third embodiment, when the molten metal 2 is supplied from the tundish 1 to the mold 5, the movable plates 18 and 19 are moved symmetrically with respect to the center axis of the nozzle 3. Since the molten metal 2 injected from the tundish 1 flows through the center of the nozzle 3, the molten metal 2 can be uniformly supplied to the mold 5. Thereby, a high quality cast piece can be formed regardless of the amount of the molten metal 2 supplied to the mold per unit time.

(Other Embodiments of the Present Invention) The present invention is directed to a computer connected to an apparatus or a system connected to the various devices so as to operate various devices so as to realize the functions of the above-described embodiments. The scope of the present invention also includes a case in which a program code of software for realizing the function of the above-described embodiment is supplied and the above-described various devices are operated according to a program stored in a computer of the apparatus or the system. It is.

In this case, the program code of the software implements the functions of the above-described embodiment, and the program itself and means for supplying the program code to the computer, for example, the program code The stored recording medium constitutes the present invention. As a recording medium for recording such a program code, for example, a floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, CD-R
An OM, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

When the computer executes the supplied program code, not only the functions of the above-described embodiment are realized, but also the OS (Operating System) or other operating system running on the computer. Needless to say, even when the functions of the above-described embodiments are realized in cooperation with application software or the like, such program codes are included in the embodiments of the present invention.

Further, after the supplied program code is stored in a memory provided in a function expansion board of a computer or a function expansion unit connected to the computer, the function expansion board or the function expansion board is stored based on the instruction of the program code. It is needless to say that the present invention also includes a case where a CPU or the like provided in the unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

[0051]

As described above, according to the present invention,
When supplying the molten metal from the preheating tank to the mold through the nozzle, the supply amount adjusting means adjusts the supply amount of the molten metal from the preheating tank to the mold per unit time, and vibrates the supply amount adjusting means. With this configuration, it is possible to cause the fluid to flow in the nozzle symmetrically with respect to the vibration direction, and it is possible to eliminate the bias of the flow of the molten metal in the nozzle. Thereby, the molten metal can be uniformly supplied into the mold, and a high quality cast piece can be formed regardless of the amount of the molten metal supplied to the mold per unit time.

According to another feature of the present invention, the nozzle is provided with a first movable plate and a second movable plate for adjusting the amount of molten metal supplied from the preheating tank to the mold per unit time. Therefore, the first and second movable plates are movably controlled symmetrically with respect to the center axis of the nozzle, so that the nozzle can be moved regardless of the supply amount of the molten metal per unit time. The center can allow the molten metal to flow. Thereby, the molten metal can be uniformly supplied into the mold, and a high quality cast piece can be formed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration example of a continuous casting apparatus according to a first embodiment.

FIG. 2 is a diagram illustrating a configuration example of a continuous casting apparatus according to a second embodiment.

FIG. 3 is a diagram for explaining a plate driving operation in a continuous casting apparatus according to a second embodiment.

FIG. 4 is a diagram showing a configuration example of a continuous casting apparatus according to a third embodiment.

FIG. 5 is a diagram for explaining a plate driving operation in a continuous casting apparatus according to a third embodiment.

FIG. 6 is a diagram showing a configuration of a conventional continuous casting apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tundish 2 Molten metal 3 Nozzle 4 Discharge port 5 Mold 6 Cast piece 7 Stopper 8 Hot surface 9, 9 'Stopper control unit 10 Flow control unit 11 Vibration control unit 70 Drive unit 71 Opening / closing drive unit 72 Vibration drive unit

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B22D 41/20 B22D 41/20 41/38 41/38 (72) Inventor Makoto Tanaka 20-1 Shintomi, Futtsu-shi Made in New Japan 4E004 MB02 MB09 MB10 4E014 GA00 MA05 MA11 MA13 MA25

Claims (11)

[Claims] 1. A continuous casting apparatus for supplying molten metal from a preheating tank to a mold via a nozzle to form a slab, wherein the amount of molten metal supplied from the preheating tank to the mold per unit time Supply amount adjusting means for adjusting the supply amount, a driving means for driving the supply amount adjusting means, and a control means for controlling the operation of the driving means, when supplying the molten metal from the preheating tank to the mold, A continuous casting apparatus characterized by vibrating the supply amount adjusting means. 2. The flow control device according to claim 1, wherein the control unit controls the operation of the driving unit such that the opening of the supply amount control unit becomes a predetermined opening degree in accordance with the supply amount of the molten metal per unit time. 2. The continuous casting apparatus according to claim 1, further comprising: a vibration control unit configured to control an operation of the driving unit so as to vibrate the supply amount adjusting unit. 3. 3. The continuous casting apparatus according to claim 1, wherein the supply amount adjusting means vibrates perpendicularly to a flowing direction of the molten metal in the nozzle. 4. The continuous casting apparatus according to claim 1, wherein the supply amount adjusting means vibrates in parallel with the direction from the F plane to the L plane of the slab to be formed. 5. The apparatus according to claim 1, wherein the supply amount adjusting means is a stopper for controlling an injection amount of the molten metal from the preheating tank to the nozzle. Continuous casting equipment. 6. The supply amount adjusting means is a movable plate of the nozzle.
The continuous casting apparatus according to any one of the above. 7. A continuous casting apparatus for supplying molten metal from a preheating tank to a mold via a nozzle to form a slab, wherein a supply amount of molten metal per unit time supplied from the preheating tank to the mold. A first movable plate and a second movable plate for adjusting the distance, a driving unit for driving the first and second movable plates, and a driving operation of the driving unit for controlling the first movable plate And a control means for controlling the position of the second movable plate, wherein the first and second movable plates move symmetrically with respect to the central axis of the nozzle. 8. A continuous casting method for supplying molten metal from a preheating tank to a mold via a nozzle to form a slab, wherein the molten metal is supplied from the preheating tank to the mold. Wherein the supply amount per unit time is adjusted by the supply amount adjusting means and the supply amount adjusting means is vibrated. 9. The continuous casting method according to claim 8, wherein the supply amount adjusting means is vibrated perpendicularly to a flowing direction of the molten metal in the nozzle. 10. The continuous casting method according to claim 8, wherein the supply amount adjusting means vibrates in parallel with the direction from the F plane to the L plane of the slab to be formed. 11. A continuous casting method for forming a slab by supplying molten metal from a preheating tank to a mold via a nozzle, wherein a supply amount of the molten metal supplied to the mold from the preheating tank per unit time. A first movable plate and a second movable plate for adjusting the first and second movable plates are provided on the nozzle;
Wherein the movable plate is controlled to be movable.