KR100285345B1 - Apparatus for preventing leakage of molten steel for twin roll strip casting - Google Patents

Apparatus for preventing leakage of molten steel for twin roll strip casting Download PDF

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Publication number
KR100285345B1
KR100285345B1 KR1019960069942A KR19960069942A KR100285345B1 KR 100285345 B1 KR100285345 B1 KR 100285345B1 KR 1019960069942 A KR1019960069942 A KR 1019960069942A KR 19960069942 A KR19960069942 A KR 19960069942A KR 100285345 B1 KR100285345 B1 KR 100285345B1
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South Korea
Prior art keywords
molten steel
casting
edge
edge dam
temperature
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KR1019960069942A
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Korean (ko)
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KR19980051078A (en
Inventor
송제명
추동균
박종학
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이구택
포항종합제철주식회사
신현준
재단법인포항산업과학연구원
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Priority to KR1019960069942A priority Critical patent/KR100285345B1/en
Publication of KR19980051078A publication Critical patent/KR19980051078A/en
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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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/066—Side dams
    • 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
    • B22D11/16—Controlling or regulating processes or operations

Abstract

PURPOSE: An apparatus for preventing leakage of molten steel for twin roll strip casting is provided which prevents molten steel from being leaked by measuring a temperature of the edge part of a strip and controlling a height of edge dams accordingly. CONSTITUTION: In a strip casting equipment in which a strip(50) is produced by connecting edge dams(40) to both sides of a pair of casting rolls(10) and rotating the casting rolls(10), the edge dams(40) store molten steel and are supported by cylinders(30), the apparatus for preventing leakage of molten steel for twin roll strip casting comprises a thermoscope(80) measuring a temperature of the edge part of the strip(50) adjacent to the bottom of the edge dams(40); a control part(90) converting the temperatures into data by receiving temperatures measured at the thermoscope(80); and an elevation control cylinder(70) which is installed at the upper part of the edge dams(40) so as to control an elevation of the edge dams(40) by signals of the control part(90).

Description

쌍롤형 박판주조용 용강누출 방지장치Double roll type sheet steel casting prevention device

본 발명은 쌍롤형 박판주조용 용강누출 방지장치에 관한 것으로서, 더욱 상세하게는 에지댐의 위치를 조정하여 용강의 누출로 인한 주편 에지(Edge)부 불량을 방지하는 쌍롤형 박판주조용 용강누출 방지장치에 관한 것이다.The present invention relates to a molten steel leakage preventing device for twin roll type sheet casting, and more particularly, to a molten steel leakage preventing apparatus for twin roll type sheet casting which prevents defects in the edge of the cast steel due to leakage of molten steel by adjusting the position of the edge dam. It is about.

일반적으로 쌍롤형 박판 주조장치는 노즐을 통해서 공급된 용강을 회전하는 한쌍의 주조롤로 냉각시킨 후, 상기 냉각롤 사이로 배출하여 주편으로 생산 하는데 상기 주조롤의 양측으로 용강이 누출되는 것을 방지 할 수 있는 장치가 절실히 요구되고 있는 실정이다.In general, a twin roll type sheet casting apparatus cools molten steel supplied through a nozzle to a pair of rotating casting rolls, and then discharges them between the cooling rolls to produce cast steel, which can prevent the molten steel from leaking to both sides of the casting roll. There is an urgent need for a device.

종래에는 도 1 및 도 2에 도시한 바와 같이 한쌍의 주조롤(10)상부에는 용강이 공급는 노즐(20)이 설치되어 있고, 상기 주조롤(10)의 양측에는 실린더(30)에 의해서 지지되어 있는 에지댐(40)이 접속되어 있으며, 상기 주조롤(10)에 의해서 생산되는 주편(50)의 에지부에는 주편(50)의 상태를 측정하기 위한 측정장치(60)가 설치되어 있다.1 and 2, a nozzle 20 for supplying molten steel is provided on a pair of casting rolls 10, and both sides of the casting rolls 10 are supported by a cylinder 30 as shown in FIGS. An edge dam 40 is connected, and a measuring device 60 for measuring the state of the cast steel 50 is provided at the edge portion of the cast steel 50 produced by the casting roll 10.

따라서 종래에는 노즐(20)을 통해서 용강(100)이 공급되면 공급되는 용강 (100)을 주조용 주조롤(10)의 양끝단을 막고 있는 에지댐(40) 사이에 저장하여 용탕풀을 형성하게 되며, 주조용 주조롤(10)의 회전에 의해 주편(50)을 생산하게 된다. 또한 주조중에 에지댐(40)에는 용강(100)으로 주편(50)을 생산할 때 인장력이 작용하는데 이때 에지댐(40)이 뒤로 밀려나서 용강이 유출되지 않게 하기 위하여 실린더(30)로 에지댐(40)을 주조롤(10)측에 밀착시키게 된다.Therefore, in the related art, when the molten steel 100 is supplied through the nozzle 20, the molten steel 100 is stored between the edge dams 40 blocking both ends of the casting roll 10 for casting to form a molten pool. By the rotation of the casting roll 10 for casting is to produce the cast steel (50). In addition, during casting, the edge dam 40 has a tensile force when the slab 50 is produced by the molten steel 100. At this time, the edge dam 40 is pushed backward to prevent the molten steel from flowing out. 40) is in close contact with the casting roll 10 side.

상기 에지댐(40)의 밀착력은 주편상태 측정장치(60)로 주편(50)의 에지부를 계속해서 측정하여 주편(50) 에지의 상태가 나빠지면 좀 더 강한 힘으로 에지댐 (40)을 주조롤(10)에 밀착시켜 용강(100)의 유출 및 에지댐(40)의 마모를 최소화 하고 있다. 그런데 에지댐(40)을 밀어내는 힘은 에지댐(40)의 높이에 따라 달라 진다. 즉, 에지댐(40)을 밀어내는 힘은 용강이 응고되어 입하될 때의 인장력으로 대표되므로 이러한 힘을 에지댐(40)에 최소로 작용시키기 위하여 에지댐(40)의 저면을 응고셀이 만나는 곳보다 약간 낮은 곳에 위치시켜야 한다.The adhesion force of the edge dam 40 is continuously measured by the edge state of the slab 50 by the slab state measuring device 60, if the state of the edge of the slab 50 is worse, casting the edge dam 40 with a stronger force Close contact with the (10) to minimize the outflow of the molten steel 100 and the wear of the edge dam (40). By the way, the force to push the edge dam 40 depends on the height of the edge dam (40). That is, the force pushing the edge dam 40 is represented by the tensile force when molten steel is solidified and received, so that the solidification cell meets the bottom surface of the edge dam 40 to minimize the force to the edge dam 40. It should be located slightly lower than the place.

이러한 응고셀이 만나는 위치는 용강의 온도 분포 및 유동 양상에 따라 달라지므로 주조중에 계속 변화하게 된다. 따라서 에지댐(40)의 저면높이가 응고셀이 만나는 곳보다 높으면 미응고 용강이 유출될 수 있고, 에지댐(40)의 저면높이가 응고셀이 만나는 곳보다 낮으면 상당히 큰 힘으로 에지댐(40)을 밀착시켜야 하는데, 이때 에지댐(40)은 회전하는 주조롤(10)에 의해 마모가 빠른 속도로 진행되어 마모된 부위가 심해지면 이곳으로 용강이 유출되어 생산성을 떨어뜨리게 되는 문제점이 있다.The location where these solidification cells meet depends on the temperature distribution and flow pattern of the molten steel and therefore continues to change during casting. Therefore, if the bottom height of the edge dam 40 is higher than where the coagulation cell meets, uncoagulated molten steel can flow out. If the bottom height of the edge dam 40 is lower than the place where the coagulation cell meets, the edge dam (with a relatively large force) 40) should be in close contact with the edge dam 40, the wear of the edge of the rotating casting roll 10 proceeds at a high speed, if the worn portion is severe, there is a problem that the molten steel flows out here to reduce productivity. .

본 발명은 상기한 실정을 감안하여 종래 박판 주조장치가 갖는 각종 문제점들을 해결하고자 발명한 것으로서, 주편 에지부의 온도를 측정하고 이에 따라 에지댐의 높이를 조절하여 용강이 누출되는 것을 방지하는 쌍롤형 박판주조용 용강누출 방지장치를 제공함에 그 목적이 있다.The present invention has been invented to solve various problems that the conventional sheet casting apparatus has in view of the above situation, a twin-roll thin plate column to prevent the leakage of molten steel by measuring the temperature of the slab edge portion and adjust the height of the edge dam accordingly The purpose is to provide a quiet molten steel leakage preventing device.

제1도는 종래 쌍롤형 박판 주조장치의 정면도,1 is a front view of a conventional twin roll type sheet casting apparatus,

제2도는 제1도의 A - A선 단면도,2 is a cross-sectional view taken along the line A-A of FIG.

제3도는 본 발명 용강누출 방지장치가 채용된 쌍롤형 박판 주조장치의 정면도,3 is a front view of a twin roll thin plate casting apparatus employing the molten steel leakage preventing device of the present invention,

제4도는 제3도의 B - B선 단면도이다.4 is a cross-sectional view taken along the line B-B in FIG.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

10 : 주조롤 30 : 실린더10: casting roll 30: cylinder

40 : 에지댐 50 : 주편40: edge dam 50: cast

70 : 높이 조절실린더 80 : 온도측정기70: height adjustment cylinder 80: temperature measuring instrument

90 : 제어부90: control unit

상기한 목적을 달성하기 위한 본 발명 쌍롤형 박판주조용 용강누출 방지장치는 한쌍의 주조롤(10) 양측에 용강(100)을 보관하며 실린더(30)에 의해서 지지되는 에지댐(40)을 접속시켜 상기 주조롤(10)의 회전에 의해서 주편(50)을 생산하는 주편 주조장치에 있어서, 상기 에지댐(40)의 저면에 근접된 주편(50) 에지부의 온도를 측정하는 온도 측정기(80)와, 상기 온도 측정기(80)에서 측정된 온도를 전달받아 데이터로 변환하는 제어부(90) 및, 상기 제어부(90)의 신호에 의해서 에지댐 (40)의 높이를 조절하기 위하여 에지댐(40)의 상측에 설치된 높이 조절 실린더(70)를 구비하여서 구성된 것을 특징으로 한다.In order to achieve the above object, the present invention has a molten steel leakage preventing device for twin roll type sheet keeping the molten steel 100 on both sides of a pair of casting rolls 10 to connect the edge dam 40 supported by the cylinder 30. In the cast steel casting device for producing the cast steel 50 by the rotation of the casting roll 10, the temperature measuring device 80 for measuring the temperature of the edge portion of the cast steel 50 close to the bottom surface of the edge dam 40 and The control unit 90 receives the temperature measured by the temperature measuring device 80 and converts the data into data, and adjusts the height of the edge dam 40 by the signal of the control unit 90. It is characterized by comprising a height adjustment cylinder 70 installed on the upper side.

이하, 첨부도면을 참조하여 본 발명 쌍롤형 박판주조용 용강누출 방지장치의 작용을 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the molten steel leakage preventing device for twin roll type sheet casting.

도 3은 본 발명 용강누출 방지장치가 채용된 쌍롤형 박판 주조장치의 정면도이고, 도 4는 도 3의 B - B선 단면도로서 이를 참조하면, 한쌍의 주조롤(10) 양측에는 실린더(30)에 의해서 이동되는 에지댐(40)이 접속되어 있고, 상기 에지댐(40)의 상부에는 높이 조절 실린더(70)가 설치되어 있다.3 is a front view of a twin roll type sheet casting apparatus employing the molten steel leakage preventing device of the present invention, Figure 4 is a cross-sectional view taken along the line B-B of Figure 3, a pair of casting rolls 10 on both sides of the cylinder 30 The edge dam 40 moved by the edge is connected, and the height adjustment cylinder 70 is provided in the upper part of the said edge dam 40. As shown in FIG.

또한, 상기 에지댐(40)의 하부에는 주편(50)의 온도를 측정하기 위한 온도 측정기(80)가 설치되어 있고, 상기 온도측정기(80)에서 측정된 주편(50)의 온도를 변환하여 그 신호에 따라 높이 조절 실린더(70)를 작동시키는 제어부(90)로 구성되어 있다.In addition, a temperature measuring device 80 for measuring the temperature of the slab 50 is installed in the lower portion of the edge dam 40, and converts the temperature of the slab 50 measured by the temperature measuring device 80 Consists of a control unit 90 for operating the height adjustment cylinder 70 in accordance with the signal.

상기와 같이 구성된 본 발명은 노즐(20)을 통해서 공급된 용강(100)이 주조롤(10)을 통과하며 생산된 주편(50)으로 생산되면 온도측정기(80)로 에지댐(40)하부의 온도를 측정하며 상기 측정된 주편(50) 온도가 기준 온도보다 높으면 미응고 용강이 흘러 니풀이 생성되는 것이므로 에지댐(40)의 높이가 부적절하게 높고 주편(50) 에지의 온도가 기준 온도보다 낮으면 주편(50)이 응고 된 후, 시간의 경과가 있었던 것이므로 에지댐(40)의 높이가 부적절하게 낮은 것으로 판단할 수 있다. 따라서 에지댐(40) 저면과 인접한 주편(50)의 온도를 온도측정장치(80)를 사용하여 측정하고, 측정된 온도를 제어부(90)에서 인식하고 기준온도와 비교함으로써 적정한 높이를 판단하여 에지댐 높이 조절용 실린더(70)로 에지댐(40)의 높이를 제어함으로써 주조중에 계속해서 에지댐(40)은 적절한 높이에 위치하게 된다.According to the present invention configured as described above, the molten steel 100 supplied through the nozzle 20 passes through the casting roll 10 and is produced as the produced cast steel 50. When the measured temperature of the cast steel 50 is higher than the reference temperature, the non-solidified molten steel flows to form nibbles, so that the height of the edge dam 40 is inappropriately high and the temperature of the edge of the cast 50 is lower than the reference temperature. If the slab 50 is solidified, it is determined that the height of the edge dam 40 is inappropriately low because time has elapsed. Therefore, the temperature of the slab 50 adjacent to the bottom surface of the edge dam 40 is measured by using the temperature measuring device 80, the controller 90 recognizes the measured temperature and compares it with the reference temperature to determine the proper height and edge. By controlling the height of the edge dam 40 with the dam height adjustment cylinder 70, the edge dam 40 is continuously positioned at an appropriate height during casting.

상기한 바와 같이 작용하는 본 발명 쌍롤형 박판주조용 용강누출 방지 장치는 용강 내부의 온도 분포나 용강의 유동 양상에 의해 변화될 수 있는 응고셀이 만나는 곳의 위치 변화가 용강이 유출되지 않고 에지댐(40)을 롤과 밀착시키는 데 필요한 힘을 변화시킬 수 있다는 것에 착안하여 에지댐(40) 바닥과 인접한 부위에서의 온도변화로 주편(50) 에지의 상태를 판단하고 이에 의해 에지댐 높이 조절용 실린더(70)로 에지댐(40)을 적절한 높이로 제어함으로써 오랜 시간동안 용강이 유출되지 않고 주조가 지속될 수 있도록 하여 생산성을 높일 수 있게 되는 매우 유용한 발명이다.In the present invention, the double roll type sheet casting molten steel leakage preventing device that acts as described above is the edge dam without the molten steel flows out of the position change where the coagulation cell, which can be changed by the temperature distribution or the flow of molten steel inside the molten steel meets the edge dam ( In view of the fact that the force required to bring the 40 into close contact with the roll can be changed, the state of the edge of the slab 50 can be determined by the temperature change in the area adjacent to the bottom of the edge dam 40, thereby determining the edge dam height adjusting cylinder ( 70) by controlling the edge dam 40 to an appropriate height it is a very useful invention that can increase the productivity by allowing the casting to continue without flowing out for a long time.

Claims (1)

한쌍의 주조롤(10) 양측에 용강(100)을 보관하며 실린더(30)에 의해서 지지되는 에지댐(40)을 접속시켜 상기 주조롤(10)의 회전에 의해서 주편(50)을 생산하는 주편 주조장치에 있어서, 상기 에지댐(40)의 저면에 근접된 주편(50) 에지부의 온도를 측정하는 온도 측정기(80)와, 상기 온도 측정기(80)에서 측정된 온도를 전달받아 데이터로 변환하는 제어부(90) 및, 상기 제어부(90)의 신호에 의해서 에지댐(40)의 높이를 조절하기 위하여 에지댐(40)의 상측에 설치된 높이 조절 실린더(70)를 구비하여서 구성된 것을 특징으로 하는 쌍롤형 박판주조용 용강누출 방지장치.Cast steel to keep the molten steel 100 on both sides of the pair of casting rolls 10 and to connect the edge dam 40 supported by the cylinder 30 to produce the cast steel 50 by the rotation of the casting roll 10 In the casting apparatus, the temperature measuring device 80 for measuring the temperature of the edge portion of the slab 50 close to the bottom surface of the edge dam 40, and receives the temperature measured by the temperature measuring device 80 to convert the data The pair of the control unit 90 and the height adjustment cylinder 70 is provided on the upper side of the edge dam 40 in order to adjust the height of the edge dam 40 in response to the signal of the control unit 90 Molten steel leakage preventing device for roll type thin plate casting.
KR1019960069942A 1996-12-23 1996-12-23 Apparatus for preventing leakage of molten steel for twin roll strip casting KR100285345B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101051734B1 (en) * 2003-12-23 2011-07-25 주식회사 포스코 Edge dam driving device of twin roll sheet casting machine
KR101204467B1 (en) 2010-10-15 2012-11-23 주식회사 포스코 Jig for testing edge dam
KR101243204B1 (en) 2009-12-21 2013-03-13 주식회사 포스코 Apparatus and method measuring damage on surface of casting roll in twin roll strip caster
KR101359195B1 (en) 2011-12-15 2014-02-05 주식회사 포스코 Apparatus for controlling vertical position of edgedam and method using thereof
JP7233161B2 (en) 2016-11-07 2023-03-06 日本製鉄株式会社 Side seal device, twin roll type continuous casting device, and method for producing thin cast slab

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101243203B1 (en) * 2009-12-17 2013-03-13 주식회사 포스코 A Method of Adjusting Strip Thickness Variance caused by Eccentricity of Roll

Citations (1)

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Publication number Priority date Publication date Assignee Title
JPH0615414A (en) * 1991-11-19 1994-01-25 Nippon Steel Corp Method and device for twin roll continuous casting

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0615414A (en) * 1991-11-19 1994-01-25 Nippon Steel Corp Method and device for twin roll continuous casting

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101051734B1 (en) * 2003-12-23 2011-07-25 주식회사 포스코 Edge dam driving device of twin roll sheet casting machine
KR101243204B1 (en) 2009-12-21 2013-03-13 주식회사 포스코 Apparatus and method measuring damage on surface of casting roll in twin roll strip caster
KR101204467B1 (en) 2010-10-15 2012-11-23 주식회사 포스코 Jig for testing edge dam
KR101359195B1 (en) 2011-12-15 2014-02-05 주식회사 포스코 Apparatus for controlling vertical position of edgedam and method using thereof
JP7233161B2 (en) 2016-11-07 2023-03-06 日本製鉄株式会社 Side seal device, twin roll type continuous casting device, and method for producing thin cast slab

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