KR20100025933A - Ladle cover structure - Google Patents

Ladle cover structure Download PDF

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Publication number
KR20100025933A
KR20100025933A KR1020080084689A KR20080084689A KR20100025933A KR 20100025933 A KR20100025933 A KR 20100025933A KR 1020080084689 A KR1020080084689 A KR 1020080084689A KR 20080084689 A KR20080084689 A KR 20080084689A KR 20100025933 A KR20100025933 A KR 20100025933A
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South Korea
Prior art keywords
ladle
cover
ladle cover
cover frame
frame
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KR1020080084689A
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Korean (ko)
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KR100989782B1 (en
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이만식
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현대제철 주식회사
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/08—Shaking, vibrating, or turning of moulds
    • 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
    • B22D41/28—Plates therefor
    • B22D41/34—Supporting, fixing or centering means therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

PURPOSE: A cover structure of a ladle is provided to absorb external impact and to maintain the internal temperature of a ladle by detachably attaching the cover structure to a cover frame. CONSTITUTION: A cover structure of a ladle comprises a pillar(20), a cover frame(22), and a buffering member. The pillar is positioned close to a ladle(10) and stands upright on the ground. The cover frame is arranged on top of the pillar to rotate. The lower part of the detachable cover frame is attached to a cover with a connector. The buffering member is arranged between the cover frame and the cover.

Description

레들 커버 구조체{LADLE COVER STRUCTURE}Ladle cover structure {LADLE COVER STRUCTURE}

본 발명은 레들 커버 구조체에 관한 것으로서, 특히 레들의 상부에 안착되어 레들 내의 용강온도를 보온할 수 있도록 함과 아울러 열 변형을 최소화하도록 그 구조가 개선된 레들 커버 구조체에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle cover structure, and more particularly, to a ladle cover structure having an improved structure to be mounted on top of the ladle to keep the molten steel temperature in the ladle and to minimize thermal deformation.

일반적으로 제강공장에서는 고철이나 혹은 선철을 제강로에 용해한 후 필요한 합금원소를 첨가하는 취련작업을 거쳐 강을 제조하게 된다.In general, steel mills manufacture steel by melting scrap iron or pig iron in a steelmaking furnace, and then adding necessary alloying elements.

그리고, 뒤이어 제강로에서 취련이 완료된 용강은 2차정련 작업 또는 주조작업을 위하여 레들(ladle)에 옮겨지게 된다. 이와 같이 레들은 제강공정에 있어 후속작업을 하기 위한 필수 장비이다.Subsequently, the molten steel which is finished in the steelmaking furnace is transferred to a ladle for secondary refining or casting. As such, ladles are essential equipment for subsequent work in the steelmaking process.

이러한 레들은 통상적으로 철피로 둘러싸여 있는 본체 내측에 수강하는 고열의 용강을 견딜 수 있도록 내화연와를 축조하여 구성되어 있다.These ladles are typically constructed by constructing a fire-resistant lead to withstand the high-temperature molten steel that is enclosed by a steel shell.

그리고, 하부에 형성되어 있는 출강구에는 용강의 배출을 조정할 수 있도록 하는 슬라이딩 노즐장치와 2차 정련시 불활성가스를 주입하는 다공질의 포러스블럭 그리고 레들의 출강구를 통해 출강되는 용강 내의 슬래그를 검출할 수 있도록 하는 슬래그 검출장치 등으로 구성되어 있다.In addition, a sliding nozzle device for adjusting the discharge of the molten steel, a porous porous block for injecting inert gas during the second refining, and slag in the molten steel that is pulled out through the tap hole of the ladle are formed in the tap hole formed in the lower part. It is composed of a slag detection device for enabling.

또한, 레들의 상부에는 레들 내의 용강 온도가 외부로 누출되는 것을 방지하기 위해 덮개 형태의 레들 커버가 마련된다.In addition, the upper portion of the ladle is provided with a cover cover ladle to prevent leakage of the molten steel temperature in the ladle to the outside.

레들 커버는 두께가 대략 100mm정도의 두께를 갖는 원형 구조물로 구성되며, 레들 커버의 지지구조체는 레들 주위에 근접되고 지면에 대해 수직으로 배치되는 지주와, 그 지주의 상부에 회전 가능하도록 배치되고 하부가 레들 커버와 일체로 고정되는 커버 프레임으로 구성된다. The ladle cover is composed of a circular structure having a thickness of about 100 mm, and the support structure of the ladle cover is a support which is close to the ladle and is disposed perpendicular to the ground, and is rotatably disposed on the upper part of the support and the lower part of the ladle cover. Is composed of a cover frame fixed integrally with the ladle cover.

그런데, 레들의 상부 테두리 부위에 지금 등의 이물질이 고착될 경우, 레들 커버의 레들의 상부면에 들뜨는 틈새부위가 발생하게 되며, 그 틈새를 통해 레들 내부의 온도가 외부로 누출되어 열 손실되는 문제점이 있을 뿐만 아니라, 레들 커버의 하측면 접촉부위가 충격에 의해 파손될 우려가 있다.However, when foreign matters such as now adhere to the upper edge portion of the ladle, a floating portion is generated on the upper surface of the ladle of the ladle cover, and the temperature inside the ladle leaks to the outside through the gap, causing heat loss. In addition to this, there is a fear that the lower side contact portion of the ladle cover is damaged by the impact.

본 발명은 상기한 제반문제점을 감안하여 이를 해결하고자 제안된 것으로, 그 목적은 레들 커버의 상부면에 레들과의 접촉시 발생되는 충격을 완충하도록 함과 아울러, 레들 커버와 레들 상부 테두리간의 틈새 부위가 발생되는 것을 최소화할 수 있도록 그 구조가 개선된 레들 커버 구조체를 제공하는 데 있다. The present invention has been proposed to solve the above problems in view of the above problems, the object of which is to cushion the impact generated when the contact with the ladle on the upper surface of the ladle cover, and the gap between the ladle cover and the upper edge of the ladle cover It is to provide a ladle cover structure whose structure is improved to minimize the occurrence of a.

상기한 목적을 달성하기 위한 본 발명은 레들 주위에 근접되고 지면에 대해 수직으로 배치되는 지주와, The present invention for achieving the above object is a strut close to the ladle and disposed perpendicular to the ground,

상기 지주의 상부에 회전 가능하도록 배치되고 하부가 레들 커버와 결합수단을 매개로 착탈 가능하게 결합되는 커버 프레임과,A cover frame rotatably disposed on an upper portion of the support and a lower portion detachably coupled to the ladle cover via a coupling means;

상기 커버 프레임과 레들 커버 사이에 배치되고 상기 레들과의 접촉시 발생되는 충격을 완충시키는 완충수단을 구비한 것을 특징으로 한다.It is characterized in that it is provided between the cover frame and the ladle cover and a cushioning means for cushioning the impact generated when the contact with the ladle.

상기 결합수단은 상기 레들 커버의 상부면에 복수개 서로 이격되도록 배치되고 체결부재를 매개로 고정되는 승강구와,The coupling means is provided with a plurality of lifting holes which are arranged to be spaced apart from each other on the upper surface of the ladle cover and fixed via a fastening member;

상기 승강구의 단부가 수용되며 커버 프레임의 하부면에 결합부재를 매개로 고정되는 고정구를 구비한 것이다.An end of the hatch is accommodated and has a fixture fixed to the lower surface of the cover frame by a coupling member.

바람직하게는, 상기 고정구들의 외주면을 일체로 연결하는 연결부재를 더 구비한 것이다.Preferably, it further comprises a connection member for integrally connecting the outer peripheral surface of the fasteners.

상기 완충수단은 상기 커버 프레임과 레들 커버 사이의 복수개소에 각각 일방향 탄성력을 부여하는 스프링부재가 배치된 것이다.The buffer means is a spring member for imparting a one-way elastic force to a plurality of places between the cover frame and the ladle cover is disposed.

본 발명은 레들 커버와 커버 프레임의 연결구조를 착탈 가능한 분리식 구조로 구성하여 충격에 대한 완충성을 갖도록 함과 아울러 레들 커버와 레들간의 틈새를 최소화할 수 있도록 한 것인 바, 이에 따르면 본 발명은 레들 커버가 레들의 상부에 안착될 때 발생되는 충격에 대해 완충성을 부여하여 파손율을 줄일 수 있을 뿐만 아니라, 레들 커버와 레들간의 틈새를 최소화하여 보온성을 향상시킬 수 있는 유용한 효과를 갖는다.The present invention is to configure the connection structure of the ladle cover and the cover frame in a removable removable structure to minimize the gap between the ladle cover and the ladle as well as to cushion the impact, according to the present The present invention provides a useful effect of improving the thermal insulation by minimizing the gap between the ladle cover and the ladle by providing cushioning against shock generated when the ladle cover is seated on the upper part of the ladle. Have

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 레들 커버 구조체는, 도 1 내지 도 4를 참조하여 설명하면, 레들(10) 주위에 근접되고 지면에 대해 수직으로 배치되는 지주(20)와, 지주(20)의 상부에 회전 가능하도록 배치되고 하부가 결합수단을 매개로 레들 커버(100)와 착탈 가능하게 결합되는 커버 프레임(22)과, 커버 프레임(22)과 레들 커버(100) 사이에 배치되고 레들(10)과의 접촉시 발생되는 충격을 완충시키는 완충수단으로 구성된 것이다.1 to 4, the ladle cover structure according to the present invention is rotatable around the ladle 10 and disposed vertically with respect to the ground and the top of the support 20. A cover frame 22 disposed in such a manner as to be detachably coupled to the ladle cover 100 via a coupling means, and disposed between the cover frame 22 and the ladle cover 100 and in contact with the ladle 10. It is composed of a buffer means for cushioning the shock generated during.

더 상세히 설명하면, 레들 커버(100)는 레들(10)의 상부면에 안착되도록 원반 형태로 구성되고, 상부면에 복수개의 승강구(110)가 서로 이격되게 배치되어 볼트등의 체결부재(115)를 매개로 고정된 구조로 되어 있다.In more detail, the ladle cover 100 is configured in a disk shape to be seated on the upper surface of the ladle 10, a plurality of hatch 110 is disposed on the upper surface spaced apart from each other fastening member 115, such as bolts It has a fixed structure via.

지주(20)와 커버 프레임(22)은 공지의 것과 동일하므로, 여기서 자세하게 설명하지 않기로 한다.Since the strut 20 and the cover frame 22 are the same as those of the known one, they will not be described in detail here.

결합수단은 레들 커버(100)에 고정된 승강구(110)의 상단부가 승강 가능하게 내부에 수용되며 커버 프레임(22)의 하부면에 볼트등의 결합부재(40)를 매개로 고정되는 복수개의 고정구(25)로 구성된다.Coupling means is a plurality of fasteners are accommodated therein the upper end of the lifting hole 110 fixed to the ladle cover 100 is fixed to the lower surface of the cover frame 22 via a coupling member 40, such as bolts. It consists of 25.

각 고정구(25)의 외주면에는 사각 프레임 형태로 연결하여 일체로 고정하기 위한 연결부재(32,34)가 상,하로 배치된다.On the outer circumferential surface of each fastener 25, connecting members 32 and 34 for connecting in a rectangular frame shape and fixed integrally are disposed up and down.

또한, 상,하로 배치된 연결부재(32,35)를 보강하기 위해 연결된 보강부재(35)를 구비하는 것이 바람직하다.In addition, it is preferable to have a reinforcing member 35 connected to reinforce the connecting members 32 and 35 arranged up and down.

완충수단은 고정구(25)의 내부에 수용되도록 배치되고 승강구(110)와 접촉되어 일방향 탄성력을 부여하는 스프링부재(50)를 구비한 것이다.The shock absorbing means is provided with a spring member 50 which is disposed to be accommodated in the fixture 25 and contacts the lifting hole 110 to impart a one-way elastic force.

즉, 레들 커버(100)의 상측면에는 복수개의 승강구(110)가 서로 이격된 위치에 고정되도록 배치되고, 커버 프레임(22)의 하부면에는 승강구(110)에 대응되는 위치에 각각 고정구(25)가 배치된 구조를 갖는다.That is, the plurality of lifting holes 110 are disposed on the upper side of the ladle cover 100 so as to be fixed at positions spaced apart from each other, and the fixing holes 25 are respectively located at positions corresponding to the lifting holes 110 on the lower surface of the cover frame 22. ) Has a structure arranged.

또한, 승강구(110)는 상단부가 고정구(25)의 내부에 수용된 상태에서 하부로 이탈이 방지되도록 고정구(25)의 하단부와 걸림턱 구조로 결합되어 있다.In addition, the hatch 110 is coupled to the lower end of the fastener 25 and the locking step structure so that the upper end is prevented from falling downward in the state accommodated in the interior of the fastener 25.

이러한 구성을 갖는 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention having such a configuration as follows.

본 발명에 의한 레들 커버 구조체는, 레들 커버(100)가 커버 프레임(22)에 승강구(110)와 고정구(25)를 매개로 각 부위별 유동이 가능한 구조로 지지되어 있으므로, 레들 커버(100)가 레들(10)의 상부 테두리에 안착되는 과정에서, 승강구(110)가 레들 커버(100)로부터 전달되는 충격을 스프링부재(50)측으로 전달하여 충격을 완충시킬 수 있다.In the ladle cover structure according to the present invention, since the ladle cover 100 is supported by the cover frame 22 in a structure capable of flowing for each part via the hatch 110 and the fixture 25, the ladle cover 100 is provided. In the process of being seated on the upper edge of the ladle 10, the hatch 110 may transmit the shock transmitted from the ladle cover 100 to the spring member 50 side to cushion the impact.

이때, 승강구(110)는 레들 커버(100)로부터 충격력이 전달되면, 고정구(25)의 내부에서 상승되어 스프링부재(50)를 수축시키게 되고, 이어서 복원되는 스프링부재(50)의 완충작용에 의해 충격력을 감쇠시킬 수 있다.At this time, when the impact force is transmitted from the ladle cover 100, the lifting hole 110 is raised inside the fixture 25 to contract the spring member 50, and then by the buffering action of the spring member 50 to be restored. Impact force can be attenuated.

또한, 스프링부재(50)는 레들 커버(100)의 상측에서 승강구(110)를 매개로 레들 커버(100)를 하측으로 누르는 가압력을 부여하게 되므로, 레들 커버(100)와 레들(10) 간의 밀착성을 향상시켜 틈새 부위를 최소화하는 기능을 갖는다.In addition, the spring member 50 imparts a pressing force for pressing the ladle cover 100 downward through the hatch 110 from the upper side of the ladle cover 100, the adhesion between the ladle cover 100 and the ladle 10 It has the function of minimizing the gap area by improving.

특히, 레들(10)의 상부 테두리에 지금 등의 이물질이 고착되어 다른 부위와 높낮이가 차이를 보일 경우에는, 스프링부재(50)에 지지되는 승강구(110)들 간의 높이가 다르게 적용되므로, 레들 커버(100)가 수평으로 레들(10)에 안착되는 것이 아니라 기울기를 갖도록 안착되어 틈새를 줄일 수 있다.In particular, when foreign matters such as now stuck to the upper rim of the ladle 10 and the height is different from the other parts, the height between the lifting holes 110 supported by the spring member 50 is applied differently, ladle cover Rather than being horizontally seated on the ladle 10, the 100 may be seated to have an inclination to reduce the gap.

즉, 본 발명은 레들 커버(100)의 하중과 스프링부재(50)의 탄성력에 의해 레들 커버(100)가 레들(10)의 상부 테두리에 밀착되게 안착되므로, 레들 커버(100)와 레들(10)간의 틈새를 줄일 수 있게 되어 보온성을 향상시킬 수 있다.That is, according to the present invention, since the ladle cover 100 is seated to be in close contact with the upper edge of the ladle 10 by the load of the ladle cover 100 and the elastic force of the spring member 50, the ladle cover 100 and the ladle 10 It is possible to reduce the gap between the shells and improve the insulation.

본 발명은 상기한 실시예에 한정되는 것이 아니라, 본 발명의 요지에 벗어나지 않는 범위에서 다양하게 변경하여 실시할 수 있다.The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

도 1은 본 발명에 따른 레들 커버 구조체를 개략적으로 나타낸 구성도.1 is a schematic view showing a ladle cover structure according to the present invention.

도 2는 본 발명의 요부 단면도.2 is a cross-sectional view of main parts of the present invention.

도 3은 본 발명 레들 커버의 연결구조를 나타낸 저면도.Figure 3 is a bottom view showing the connection structure of the ladle cover of the present invention.

도 4는 본 발명의 사용상태도.Figure 4 is a state of use of the present invention.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 레들 20 : 지주10: ladle 20: prop

22 : 커버 프레임 25 : 고정구22: cover frame 25: fixture

32,34 : 연결부재32,34: connecting member

40 : 결합부재 50 : 스프링부재40: coupling member 50: spring member

100 : 레들 커버 110 : 승강구100: ladle cover 110: hatch

115 : 체결부재115: fastening member

Claims (4)

레들(10) 주위에 근접되고 지면에 대해 수직으로 배치되는 지주(20)와, A strut 20 proximate to the ladle 10 and disposed perpendicular to the ground, 상기 지주(20)의 상부에 회전 가능하도록 배치되고 하부가 레들 커버(100)와 결합수단을 매개로 착탈 가능하게 결합되는 커버 프레임(22)과,A cover frame 22 rotatably disposed on an upper portion of the support 20 and a lower portion of the support 20 is detachably coupled to the ladle cover 100 by a coupling means; 상기 커버 프레임(22)과 레들 커버(100) 사이에 배치되고 상기 레들(10)과의 접촉시 발생되는 충격을 완충시키는 완충수단을 구비한 것을 특징으로 하는 레들 커버 구조체.Ladle cover structure characterized in that it is provided between the cover frame and the ladle cover (100) and cushioning means for cushioning the shock generated when the contact with the ladle (10). 청구항 1에 있어서,The method according to claim 1, 상기 결합수단은 상기 레들 커버(100)의 상부면에 복수개 서로 이격되도록 배치되고 체결부재(115)를 매개로 고정되는 승강구(110)와,Wherein the coupling means is arranged on the upper surface of the ladle cover 100 a plurality of lifting holes 110 are fixed to each other via a fastening member 115 and, 상기 승강구(110)의 단부가 각각 수용되며 커버 프레임(22)의 하부면에 결합부재(40)를 매개로 고정되는 복수개의 고정구(25)를 구비한 것을 특징으로 하는 레들 커버 구조체.Ladle cover structure, characterized in that provided with a plurality of fasteners (25) are received at each end of the hatch (110) and fixed to the lower surface of the cover frame (22) via a coupling member (40). 청구항 2에 있어서,The method according to claim 2, 상기 고정구(25)들의 외주면을 일체로 연결하는 연결부재(32,34)를 더 구비한 것을 특징으로 하는 레들 커버 구조체.Ladle cover structure, characterized in that it further comprises a connecting member (32,34) to integrally connect the outer peripheral surface of the fasteners (25). 청구항 1 내지 청구항 3중 어느 한 항에 있어서,The method according to any one of claims 1 to 3, 상기 완충수단은 상기 커버 프레임(22)과 레들 커버(100) 사이의 복수개소에 각각 일방향 탄성력을 부여하는 스프링부재(50)가 배치된 것을 특징으로 하는 레들 커버 구조체.The cushioning means is a ladle cover structure, characterized in that the spring member (50) for imparting one-way elastic force to each of the plurality of places between the cover frame (22) and the ladle cover (100) is disposed.
KR1020080084689A 2008-08-28 2008-08-28 Ladle cover structure KR100989782B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109702178A (en) * 2019-03-06 2019-05-03 大连理工高邮研究院有限公司 A kind of modified covering/uncovering device and method for steel ladle full stroke covering
CN109746428A (en) * 2019-02-26 2019-05-14 第一拖拉机股份有限公司 A kind of tundish-cover nodulizing process device and processing method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51134333A (en) 1975-05-19 1976-11-20 Hitachi Ltd Pouring device with sliding cover
JPS5645262A (en) 1979-09-20 1981-04-24 Kobe Steel Ltd Heat insulating and heating device of ladle
JPS57170859U (en) 1981-04-21 1982-10-27
JPH02108438A (en) * 1988-10-19 1990-04-20 Daido Steel Co Ltd Top injection apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109746428A (en) * 2019-02-26 2019-05-14 第一拖拉机股份有限公司 A kind of tundish-cover nodulizing process device and processing method
CN109746428B (en) * 2019-02-26 2024-03-26 第一拖拉机股份有限公司 Cover pack spheroidizing device and processing method
CN109702178A (en) * 2019-03-06 2019-05-03 大连理工高邮研究院有限公司 A kind of modified covering/uncovering device and method for steel ladle full stroke covering

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