KR20120011476A - Providing method and nozzle of steel melt for continuous casting - Google Patents

Providing method and nozzle of steel melt for continuous casting Download PDF

Info

Publication number
KR20120011476A
KR20120011476A KR1020100073282A KR20100073282A KR20120011476A KR 20120011476 A KR20120011476 A KR 20120011476A KR 1020100073282 A KR1020100073282 A KR 1020100073282A KR 20100073282 A KR20100073282 A KR 20100073282A KR 20120011476 A KR20120011476 A KR 20120011476A
Authority
KR
South Korea
Prior art keywords
molten steel
aperture
nozzle
continuous casting
supply nozzle
Prior art date
Application number
KR1020100073282A
Other languages
Korean (ko)
Inventor
김경수
김용희
소경호
Original Assignee
현대제철 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대제철 주식회사 filed Critical 현대제철 주식회사
Priority to KR1020100073282A priority Critical patent/KR20120011476A/en
Publication of KR20120011476A publication Critical patent/KR20120011476A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

The present invention relates to a method for supplying molten steel and a supply nozzle for molten steel for preventing the partial surface of the nozzle due to the flow of molten steel during continuous casting, a plurality of aperture pieces and the plurality of aperture pieces A moving end formed on an upper surface of the field; It is coupled to include a top rotating plate for opening and closing the aperture piece by moving the moving end to a predetermined trajectory.

Description

PROVIDING METHOD AND NOZZLE OF STEEL MELT FOR CONTINUOUS CASTING}

The present invention relates to a method of supplying molten steel for preventing intensive melting of some surfaces of the nozzle due to the flow of molten steel during continuous casting, and a supply nozzle of molten steel for the same.

In a continuous casting process, a shroud nozzle made of a refractory is used when the molten steel of the liquid is moved to a tundish through a ladle. When mounting the shroud nozzle to the ladle, the vertical alignment must be exact.

One embodiment according to the present invention improves the conventional sliding gate opening (open) method to provide a sliding gate opening method for opening from the center of the discharge port when opening, and thereby the configuration of the nozzle.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the particular embodiments that are described. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, There will be.

Continuous casting molten steel supply nozzle related to an embodiment of the present invention for achieving the above object, a plurality of aperture pieces; A moving end formed on an upper surface of the plurality of aperture pieces; A fixed end formed on a lower surface of the plurality of aperture pieces; A lower fixing plate coupled to the fixing end of the aperture piece to fix the combined fixing end to be axially rotated; And an upper rotating plate coupled to the moving end of the aperture piece to move the moving end to a predetermined trajectory to open and close the aperture piece.

Specifically, the plurality of aperture pieces are characterized in that at least six or more, the upper rotary plate is characterized in that the gear groove is formed along the circumferential surface to open or close the aperture piece through the gear.

The molten steel supply method for continuous casting according to another embodiment of the present invention for achieving the above object, by expanding the opening of the molten steel supply nozzle located between the ladle and the tundish from the center of the molten steel supply nozzle to the outside The molten steel is moved while expanding the diameter of the molten steel passage of the molten steel supply nozzle.

Molten steel supply method for continuous casting according to another embodiment of the present invention for achieving the above object, the step of supplying molten steel in a ladle in a ladle; Expanding the molten steel supply nozzle composed of a plurality of aperture pieces from the center to the outside to open a passage of the molten steel; And supplying the molten steel moved through the molten steel supply nozzle to the tundish.

As described above, the present invention improves the conventional sliding gate opening method, and since the molten steel is introduced into the shroud nozzle center from the initial ladle opening, the effect of preventing the asymmetric melting of the shroud nozzle distribution can be expected. In addition, due to the six layers constituting the aperture gate (nozzle), the flow in the form of screws rather than the flow of molten steel directly descending inside the shroud nozzle occurs. This makes it possible to evenly control the spreadability of molten steel fed into the tundish through the shroud nozzle. Therefore, it is possible to reduce the flow of the injected molten steel to the hot water to reduce the mixing of the tundish flux thereby.

1 is a connection diagram illustrating the interconnection of a general ladle, a sliding gate, a shroud nozzle and a tundish.
2 is a block diagram of an aperture nozzle according to an embodiment of the present invention.
3A is a view showing a fully closed diaphragm nozzle of the present invention.
3B is a view showing a state in which the diaphragm nozzle of the present invention is completely open.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. Like elements in the figures are denoted by the same reference numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a connection diagram illustrating the interconnection of a general ladle, a sliding gate, a shroud nozzle and a tundish.

In general, the continuous casting machine receives molten steel produced in the steelmaking furnace and transferred to the ladle 1 through the shroud nozzle 2 to the tundish 4 and then supplied to the mold for the continuous casting machine to produce slabs of a constant size. Device.

The continuous casting machine is a ladle (1) for storing molten steel, a continuous casting machine mold to form a casting having a predetermined shape by cooling the tundish (4) and the molten steel from the tundish (4) for the first time, and It includes a plurality of pinch rollers connected to the mold to move the casting formed in the mold.

The shroud nozzle 2 is positioned between the ladle 1 and the tundish 4 and serves as a passage for moving the molten steel from the ladle 1 to the tundish 4. .

The discharge start, discharge amount and discharge stop of the molten steel M supplied from the ladle 1 to the tundish 4 are determined by the control of the flow regulating member 3 installed in the shroud nozzle 2. The flow control member 3 is configured in a stopper manner vertically moved along the same line as the shroud nozzle 2 to open and close the inlet of the shroud nozzle 2 or as shown in FIG. The sliding door may be configured in a sliding gate method of opening and closing the shroud nozzle 2 while slidingly moving in the horizontal direction within the shroud nozzle 2.

2 is a block diagram of an aperture type nozzle that is a molten metal supply nozzle according to an embodiment of the present invention.

The nozzle of the present invention is composed of a plurality of aperture pieces 100. The plurality of aperture pieces 100 are configured similar to the shape of the aperture of a conventional camera. Like the aperture of a camera, the operation of the aperture nozzle starts opening at the center of the nozzle when opening. One moving end 400 is formed on the upper surface of each of the plurality of aperture pieces 100, and one fixed end 500 is formed on each lower surface of the plurality of aperture pieces 100. The fixed end 500 is coupled to the lower fixing plate 201 to fix the fixed end axially rotated.

In order to open and close the aperture nozzle, the aperture piece 100 needs to be moved. For this movement, the upper rotating plate 200 is positioned above the aperture pieces 100 to move the moving end 400. The upper rotating plate is coupled to the moving end of the aperture piece to move the moving end to a predetermined trajectory to open and close the aperture piece. The moving end 400 is located in engagement with the hole of the upper rotary plate 200. The moving end 400 is capable of opening and closing the aperture piece 100 through the rotation of the upper rotating plate 200. There is also an advantage that the amount of the molten metal passing through the nozzle can be more precisely controlled by driving the supply nozzle of the melt, which is the aperture type nozzle of the present invention. Through the nozzle of the present invention, since the degree of opening and closing can be quantitatively controlled, the desired amount of molten metal can be passed for a desired time.

The upper rotary plate 200 is driven through the gear groove 301 and the corresponding gear 300 along the circumferential surface. The aperture piece 100 is opened or closed through the gear 300. That is, the upper rotary plate 200 is rotated through the rotational force of the gear 300 transmitted from the outside through the gear groove formed on the side of the upper rotary plate 200.

One fixed end 500 is formed on each lower surface of the plurality of aperture pieces 100, and when the aperture pieces 100 rotate, the fixed end 500 constrains each of the aperture pieces 100. It acts as a center point (the hinge point) and rotates.

The number of the plurality of aperture pieces 100 may be formed at least three or more. Here, the larger the number of aperture pieces, the better the flow of molten steel is possible in the circular shape of the molten steel passage at the time of opening, but when the number of aperture pieces is about 6 or more, it is more efficient in terms of control and design structure of the molten steel.

3A is a view showing a fully closed diaphragm nozzle of the present invention. By moving the upper rotating plate 200 of the diaphragm piece 100 located at the upper end of the diaphragm piece 100, all of the diaphragm pieces 100 are closed.

3B is a view showing a state in which the diaphragm nozzle of the present invention is completely open. The aperture piece 100 is opened by moving the upper rotary plate 200 of the aperture piece 100 positioned at the upper end of the aperture piece 100 in a direction opposite to the rotation direction of the closure.

When the molten steel is moved from the ladle 1 to the tundish 4 during the continuous casting process through the molten steel supply nozzle of the present invention, the aperture type of the present invention located between the ladle 1 and the tundish 4 The molten steel can be moved while expanding the opening of the molten steel supply nozzle, which is a nozzle, from the center to the outer side, thereby increasing the diameter of the molten steel passage of the supply nozzle.

The present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be. Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

1: ladle 2: shroud nozzle
3: flow control member 4: tundish
100: aperture piece 200: upper turn plate
201: lower fixing plate 300: gear
301: gear groove 400: moving end
500: fixed end

Claims (5)

A plurality of aperture pieces;
A moving end formed on an upper surface of the plurality of aperture pieces;
A fixed end formed on a lower surface of the plurality of aperture pieces;
A lower fixing plate coupled to the fixing end of the aperture piece to fix the combined fixing end to be axially rotated; And
And an upper rotary plate coupled to the moving end of the diaphragm piece to move the moving end to a predetermined trajectory to open and close the diaphragm piece.
The method of claim 1,
The plurality of aperture pieces are at least six or more, molten steel supply nozzle for continuous casting.
The method of claim 1,
The upper rotary plate is formed with a gear groove along the circumferential surface, characterized in that for opening or closing the aperture piece through the gear, molten steel supply nozzle for continuous casting.
Continuous casting is characterized in that the molten steel is moved while expanding the diameter of the molten steel passage of the molten steel supply nozzle by expanding the opening of the molten steel supply nozzle located between the ladle and the tundish from the center of the molten steel supply nozzle. Molten steel supply method.
Supplying molten steel from the ladle to the tundish;
Expanding the molten steel supply nozzle composed of a plurality of aperture pieces from the center to the outside to open a passage of the molten steel; And
Supplying the molten steel moved through the molten steel supply nozzle to the tundish, molten steel for continuous casting.
KR1020100073282A 2010-07-29 2010-07-29 Providing method and nozzle of steel melt for continuous casting KR20120011476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100073282A KR20120011476A (en) 2010-07-29 2010-07-29 Providing method and nozzle of steel melt for continuous casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100073282A KR20120011476A (en) 2010-07-29 2010-07-29 Providing method and nozzle of steel melt for continuous casting

Publications (1)

Publication Number Publication Date
KR20120011476A true KR20120011476A (en) 2012-02-08

Family

ID=45835684

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100073282A KR20120011476A (en) 2010-07-29 2010-07-29 Providing method and nozzle of steel melt for continuous casting

Country Status (1)

Country Link
KR (1) KR20120011476A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103993345A (en) * 2013-02-18 2014-08-20 格罗方德半导体公司 Adjustable current shield for electroplating processes
KR20190143523A (en) * 2018-06-08 2019-12-31 주식회사 휴로 Conical variable nozzle
KR20200041450A (en) * 2018-10-12 2020-04-22 에스케이실트론 주식회사 Supporting unit of silicon single crystal ingot and grinding device of silicon single crystal ingot including the same
CN114950768A (en) * 2022-07-08 2022-08-30 山东科川节能环保科技有限公司 Adjustable anti-countercurrent jet injection device
CN117839888A (en) * 2024-03-05 2024-04-09 山东大学 Ejector with adjustable throat opening

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103993345A (en) * 2013-02-18 2014-08-20 格罗方德半导体公司 Adjustable current shield for electroplating processes
KR20190143523A (en) * 2018-06-08 2019-12-31 주식회사 휴로 Conical variable nozzle
KR20200041450A (en) * 2018-10-12 2020-04-22 에스케이실트론 주식회사 Supporting unit of silicon single crystal ingot and grinding device of silicon single crystal ingot including the same
CN114950768A (en) * 2022-07-08 2022-08-30 山东科川节能环保科技有限公司 Adjustable anti-countercurrent jet injection device
CN117839888A (en) * 2024-03-05 2024-04-09 山东大学 Ejector with adjustable throat opening
CN117839888B (en) * 2024-03-05 2024-05-07 山东大学 Ejector with adjustable throat opening

Similar Documents

Publication Publication Date Title
KR20120011476A (en) Providing method and nozzle of steel melt for continuous casting
JP2012509767A (en) Method and apparatus for casting cast parts from metal melt
CN105344989B (en) A kind of liquid forging casting machine and pouring procedure
JPH0199773A (en) Rotary sliding closing device for metallurgical vessel and rotor or stator for such rotary sliding closing device
CN101314253A (en) Heat flow path apparatus for injection molding
KR101934495B1 (en) Continuous casting method and device with electromagnetic swirling nozzle
KR20110121470A (en) Device and method for casting high melting point metal
KR101916255B1 (en) Apparatus for keeping temperature of submerged nozzle
KR20120127002A (en) Device and method for casting high melting point metal
KR0169722B1 (en) Shut-off control element for a metallugical vessel
KR20130034167A (en) Apparatus for cooling mold of centrifugal casting
JP2003200249A5 (en)
KR102119506B1 (en) Friction stir unit and welding apparatus having thereof
KR20190136454A (en) Supply flow controller of casting process system
KR20110034467A (en) An agitator of submerged entry nozzle for continuous casting
KR20140106118A (en) Discharge apparatus for material and the method thereof
KR20140140819A (en) Shroud nozzle and apparatus for continuous casting having the same
KR101615021B1 (en) Anchor assembly for blast repairing
CN111230085A (en) Variable-gap type casting ladle system for aluminum alloy/magnesium alloy and preparation method
JP2012035301A (en) Pouring ladle and pouring method
WO2020232808A1 (en) Medium-frequency induction furnace capable of controlling steel pouring by means of side bottom casting
CN105081301A (en) Tundish having speed regulation function
JPH05164470A (en) Liningless inductive melting furnace
JP2020171944A (en) Pouring device for continuous casting
KR20190136455A (en) Middle flow controller of casting process system

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application