KR20120074431A - Twin roll casting process for improving shape of strip top part - Google Patents

Twin roll casting process for improving shape of strip top part Download PDF

Info

Publication number
KR20120074431A
KR20120074431A KR1020100136260A KR20100136260A KR20120074431A KR 20120074431 A KR20120074431 A KR 20120074431A KR 1020100136260 A KR1020100136260 A KR 1020100136260A KR 20100136260 A KR20100136260 A KR 20100136260A KR 20120074431 A KR20120074431 A KR 20120074431A
Authority
KR
South Korea
Prior art keywords
thin plate
tension
roll
shape
rolling mill
Prior art date
Application number
KR1020100136260A
Other languages
Korean (ko)
Inventor
하만진
황석균
이대성
Original Assignee
주식회사 포스코
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 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020100136260A priority Critical patent/KR20120074431A/en
Publication of KR20120074431A publication Critical patent/KR20120074431A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • 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

Landscapes

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

Abstract

PURPOSE: A twin roll casting process for improving a shape of a strip top part is provided to improve the yielding percentage by forming tension when shearing thin plates. CONSTITUTION: A twin roll-type casting method for improving a shape of a strip top part is as follows. 5~20% lead rate is applied to a pinch roll of a shearing machine so that tension is applied in between the pinch roll and a rolling mill when shearing thin plates. The shape of the strip top part is formed. The strip top part is the leading end of the thing plate from the shearing machine when shearing the thin plate. The tension is 50~100% of the tension applied between the rolling mill and a coiler.

Description

박판 초부의 형상을 양호하게 하는 쌍롤식 박판 주조 방법{TWIN ROLL CASTING PROCESS FOR IMPROVING SHAPE OF STRIP TOP PART}Twin roll type sheet casting method which improves shape of thin plate begining {TWIN ROLL CASTING PROCESS FOR IMPROVING SHAPE OF STRIP TOP PART}

본 발명은 쌍롤식 박판 주조 방법에 관한 것으로, 보다 상세하게는 반대 방향으로 회전하는 두 개의 주조롤 사이에 용강이 주입되어 박판을 형성하고, 상기 박판을 압연기로 압연한 후에 코일러로 권취하는 과정에서 쉬어기로 박판 전단시 박판에 일정한 장력을 부여함으로써 박판 초부의 형상을 양호하게 제어하는 쌍롤식 박판 주조 방법에 관한 것이다.The present invention relates to a twin-roll thin plate casting method, and more particularly, a molten steel is injected between two casting rolls rotating in opposite directions to form a thin plate, and the thin plate is rolled by a rolling mill and then wound by a coiler. The present invention relates to a twin-roll thin sheet casting method of controlling the shape of the thin sheet metal sheet by giving a constant tension to the thin plate during shearing of the thin plate.

일반적으로 쌍롤식 박판 주조 방법은 회전하는 한쌍의 주조롤 사이로 용강을 공급하여 그 용강으로부터 직접 수mm 두께의 박판 제품을 연속적으로 제조하는 공정이다. In general, a twin roll sheet metal casting method is a process of continuously supplying a molten steel between a pair of rotating casting rolls and continuously manufacturing a sheet product having a thickness of several mm directly from the molten steel.

도 1에 도시된 바와 같이, 반대방향으로 회전하면서 냉각되는 주조롤(1) 사이에 용융금속이 주입되고 응고되어 응고쉘이 형성되며, 롤닢에서 압하되어 박판(2)이 생성된다. 이렇게 인출된 박판(2)은 루트피트를 거쳐 엔트리 핀치롤(3)에 의해 안내된 후 압연기(3)에서 압연되어 쉬어기 핀치롤(6)과 코일러 핀치롤(7)을 거쳐 코일러(8)에 권취된다.As shown in Fig. 1, molten metal is injected and solidified between the casting rolls 1 to be cooled while rotating in the opposite direction to form a solidification shell, which is pressed down on a roll to produce a thin plate 2. The thin plate 2 thus drawn out is guided by the entry pinch rolls 3 through the root pits, and then rolled in the rolling mill 3 to pass the coil pinch rolls 6 and the coiler pinch rolls 7 to the coiler ( 8) is wound up.

이러한, 연속 주조 과정에서 제조되는 박판을 일정한 분량씩 쉬어기(6)로 전단하여 코일을 생성하는 바, 상기 쉬어기(6)로 박판 전단시에 박판의 선단부에 해당하는 박판 초부의 경우에는 아직 압연기(4)와 권취기(8) 사이에 장력이 걸려 있지 않은 상태이므로, 도 2에 나타난 바와 같이, 상기 박판 초부가 코일러(8)에 일정량 권취되어 장력이 발생하기전 까지는 박판에 웨이브가 발생하여 박판의 형상이 불량하게 되어 실수율이 저하되는 문제가 있다.The thin plate manufactured in the continuous casting process is sheared by a predetermined amount with a breaker 6 to generate a coil. In the case of a thin plate element corresponding to the front end of the thin plate at the shearing of the thin plate with the sheer 6, Since the tension is not applied between the rolling mill 4 and the winding machine 8, as shown in FIG. 2, the thin plate edge is wound up to the coiler 8 by a certain amount until a wave is generated in the thin plate. There arises a problem that the shape of the thin plate is poor, and the error rate is lowered.

본 발명은 상술한 문제점들을 해결하기 위해 안출된 것으로, 쉬어기의 박판 전단시 쉬어기 핀치롤에 속도 리드율을 주어 일정한 장력을 부여함으로써 박판 초부의 형상을 양호하게 제어하여 실수율을 향상시킬 수 있는 박판 초부의 형상을 양호하게 하는 쌍롤식 박판 주조 방법의 제공을 그 목적으로 한다.The present invention has been made to solve the above-described problems, by providing a constant tension by giving a speed lead rate to the shear pinch roll during shearing of the thin sheet, it is possible to improve the error rate by controlling the shape of the thin sheet portion well It is an object of the present invention to provide a twin roll thin plate casting method for improving the shape of a thin plate initial portion.

상기 목적을 달성하기 위해 본 발명은 반대 방향으로 회전하는 두 개의 주조롤 사이에 용강이 주입되어 박판을 형성하고, 상기 박판을 압연기로 압연하여 쉬어기 전방에 설치된 쉬어기 핀치롤을 거쳐 코일러에 권취하는 쌍롤식 박판 주조 방법에 있어서, 상기 쉬어기의 박판 전단시 상기 쉬어기 핀치롤에 속도 리드율을 5~20% 주어, 상기 압연기와 상기 쉬어기 핀치롤 사이에 장력을 부여함으로써 박판 초부의 형상을 양호하게 하는 쌍롤식 박판 주조 방법을 제공한다.In order to achieve the above object, the present invention forms a thin plate by injecting molten steel between two casting rolls rotating in opposite directions, and rolling the thin plate by a rolling mill to the coiler via a break pinch roll installed in front of the breaker. In the twin-roll thin sheet casting method of winding up, the shear pinch roll is given a speed lead rate of 5 to 20% during shearing of the thin sheet, and the tension between the rolling mill and the shear pinch roll is applied to provide Provided is a twin roll thin plate casting method of improving the shape.

이때, 상기 박판 초부는 쉬어기의 박판 전단시, 쉬어기부터 후방 50m까지의 박판 선단부인 것에도 그 특징이 있다. At this time, the thin plate sheath is characterized in that the thin plate front end portion from the break to the rear 50m at the time of shearing the thin plate.

나아가, 상기 장력은 상기 압연기와 코일러 사이에 걸리는 장력 대비 50~100%인 것에도 그 특징이 있다.Further, the tension is characterized in that 50 to 100% of the tension between the rolling mill and the coiler.

본 발명에 의하면, 쌍롤식 박판 주조기에의해 인출된 박판이 코일러로 권취되면서 쉬어기에의해 일정 단위로 전단될 때, 압연기와 코일러 사이에는 장력이 걸려있지 않게 됨으로써, 박판의 선단부에 해당하는 박판 초부에 웨이브가 발생해 평탄도가 불량하게 되는 바, 이때 쉬어기의 박판 전단시 쉬어기 핀치롤에 속도 리드율을 주어 일정한 장력을 부여함으로써 박판 초부의 형상을 양호하게 제어하여 실수율을 향상시킬 수 있다.According to the present invention, when the thin plate drawn out by the twin-roll type sheet casting machine is wound by a coiler while being sheared in a predetermined unit by a breaker, tension is not applied between the rolling mill and the coiler, whereby the thin plate corresponding to the tip of the thin plate The flatness is poor due to the wave at the beginning. At this time, the shear pinch roll gives a rate lead rate to the shear pinch roll to give a constant tension, so that the shape of the sheet can be well controlled to improve the error rate. have.

도 1은 일반적인 쌍롤식 박판 주조 공정의 모식도.
도 2(a)는 양호한 형상을 가진 박판 사진, 도 2(b)는 불량한 형상을 가진 박판 사진.
도 3(a)는 종래의 박판 절단시 쉬어기 핀치롤 속도 목표치 및 장력 변화를 나타낸 도면, 도 3(b)는 본 발명의 박판 절단시 쉬어기 핀치롤 속도 목표치 및 장력 변화를 나타낸 도면.
도 4(a)는 종래의 박판 절단시 박판 초부의 형상을 나타낸 도면, 도 4(b)는 본 발명의 박판 절단시 박판 초부의 형상을 나타낸 도면.1 is a schematic view of a typical twin roll sheet metal casting process.
Figure 2 (a) is a thin plate photo with a good shape, Figure 2 (b) is a thin plate photo with a bad shape.
Figure 3 (a) is a view showing a break pinch roll speed target value and tension change in the conventional thin plate cutting, Figure 3 (b) is a view showing a break pinch roll speed target value and tension change in the thin plate cutting of the present invention.
Figure 4 (a) is a view showing the shape of the thin plate sheath during the conventional thin plate cutting, Figure 4 (b) is a view showing the shape of the thin plate sheath during the thin plate cutting of the present invention.

이하, 본 발명의 구성에 관하여 도면을 참조하여 상세히 설명한다.Hereinafter, the configuration of the present invention will be described in detail with reference to the drawings.

도 4(a)에 도시된 바와 같이, 쌍롤식 박판 주조기에서 인출된 박판(2)이 코일러(8)로 권취되면서 쉬어기(6)에 의해 일정 단위로 절단될 때, 압연기(4)와 코일러(8) 사이에는 장력이 걸려있지 않게 된다. 이로 인하여 박판 선단부에 해당하는 박판 초부는 코일러(8)까지 무장력 상태로 이송되기 때문에 웨이브가 발생되어 평탄도가 불량하게 되는 문제가 있는 바, 따라서 박판 초부의 형상을 양호하게 하기 위해서는 쉬어기의 박판 전단시 압연기(4)와 쉬어기 핀치롤(5) 사이의 장력을 쌍롤식 박판 주조 공정의 압연기와 코일러 사이에 걸리는 장력과 동일한 정도의 장력을 유지하도록 할 필요가 있다.As shown in Fig. 4 (a), when the thin plate (2) withdrawn from the twin roll type sheet casting machine is cut into a predetermined unit by the rest (6) while being wound by the coiler (8), the rolling mill (4) and No tension is applied between the coilers 8. As a result, since the thin plate edge corresponding to the thin plate edge is transferred to the coiler 8 in a tensionless state, there is a problem that waves are generated and the flatness becomes poor. Therefore, in order to improve the shape of the thin plate edge, It is necessary to maintain the tension between the rolling mill 4 and the shear pinch roll 5 at the same time as the tension applied between the rolling mill and the coiler of the twin roll sheet metal casting process at the time of thin sheet shearing.

즉, 도 3(a)에 나타난 바와 같이, 종래의 쉬어기 핀치롤(5)은 디스차지 라인(discharge line)의 라인 속도와 동기화되거나 대략 1% 정도의 속도 목표치를 주어 약간의 장력을 부여하여 운영하고 있다. 그러나, 쉬어기(6)의 박판 전단시에는 압연기(4)와 쉬어기 핀치롤(5) 사이의 장력이 거의 제로로 떨어지게 되면서 박판 초부에 형상 불량이 발생하게 된다.That is, as shown in Figure 3 (a), the conventional break pinch roll 5 is synchronized with the line speed of the discharge line (discharge line) or given a speed target value of approximately 1% to give a slight tension Operate. However, at the time of shearing the thin plate of the shearer 6, the tension between the rolling mill 4 and the shear pinch roll 5 drops to almost zero, resulting in poor shape at the beginning of the thin plate.

따라서, 본 발명은 도 3(b)에 나타난 바와 같이, 쉬어기(6)의 박판 전단시에 상기 쉬어기 핀치롤(5)에 속도 리드율(lead rate), 즉, 라인 속도와 쉬어기 핀치롤(5)의 속도 목표치의 차이를 5~20% 주어, 압연기(4)와 쉬어기 핀치롤(5) 사이에 소정의 장력을 부여함으로써 도 4(b)에 나타난 바와 같이 박판 초부의 형상을 양호하게 할 수 있다.Accordingly, the present invention provides a speed lead rate, i.e., a line speed and a break pinch, to the shear pinch roll 5 at the front end of the thin plate of the shear 6, as shown in FIG. 3 (b). By giving a difference of the speed target value of the roll 5 by 5 to 20%, and applying a predetermined tension between the rolling mill 4 and the shear pinch roll 5, the shape of the thin plate initial portion as shown in FIG. It can be made favorable.

여기서, 박판 초부는 쉬어기의 박판 전단시, 쉬어기부터 후방 50m까지의 박판 선단부를 의미하는 것이다.Here, the thin plate edge portion means the thin plate tip portion from the break to the rear 50m at the time of shearing the thin plate.

이때, 상기 쉬어기 핀치롤(5)의 속도 리드율이 5% 미만이면 압연기(4)와 쉬어기 핀치롤(5) 사이에 부여되는 장력이 미미하여 박판 웨이브의 발생을 방지하기 어렵고, 상기 쉬어기 핀치롤(5)의 속도 리드율이 20%를 초과하면 박판 초부에 적정 장력 이상의 장력이 걸리게 되어 박판의 폭이 국부적으로 줄어드는 넥킹 현상이 발생하거나 박판 내에서의 폭 편차를 유발하며, 코일러에 권취된 내권부의 감김상태가 불량하게 될 수 있는 문제가 있다.At this time, when the speed lead ratio of the shear pinch roll 5 is less than 5%, the tension applied between the rolling mill 4 and the shear pinch roll 5 is insignificant, and it is difficult to prevent the occurrence of thin wave. If the speed lead ratio of the pinch roll 5 exceeds 20%, a tension greater than an appropriate tension is applied at the beginning of the thin plate, so that a necking phenomenon occurs in which the width of the thin plate is locally reduced or a variation in width in the thin plate is caused. There is a problem that the wound state of the wound inner portion may be poor.

또한, 본 발명에서 쉬어기 핀치롤(5)에 속도 리드율을 주어 압연기(4)와 쉬어기 핀치롤(5) 사이에 부여되는 장력은 정상 조건 하에서 압연기(4)와 코일러(8) 사이에 걸리는 장력 대비 50~100%인 것이 바람직한 바, 가장 바람직하게는 정상 조건 하에서 압연기(4)와 코일러(8) 사이에 걸리는 장력과 동일한 장력을 유지하는 것이겠으나, 실험 결과 쉬어기(6)로 박판 절단후 50% 이상의 장력만 부여하더라도 양호한 평탄도를 갖는 박판을 제조할 수 있었다.In addition, in the present invention, the tension applied between the mill 4 and the shear pinch roll 5 by giving a speed lead rate to the shear pinch roll 5 is equal to that between the mill 4 and the coiler 8 under normal conditions. It is preferable that the tension is 50 to 100% of the tension applied, and most preferably, the same tension as that applied between the rolling mill 4 and the coiler 8 is maintained under normal conditions. Even if only 50% or more of tension was applied after cutting the thin plate, a thin plate having good flatness could be manufactured.

[실시예][Example]

100톤을 목표로 연속 주조를 개시하여 반대 방향으로 회전하는 두 개의 주조롤 사이에 용강을 주입하여 STS304 강종의 박판을 형성한 후 압연기로 압연하였고, 쉬어기로 전단하여 코일러로 권취함으로써 20톤의 코일을 생성하였다.Continuous casting was started for 100 tons and molten steel was injected between two casting rolls rotating in opposite directions to form a thin plate of STS304 steel, which was rolled with a rolling mill, sheared with a sheer, and wound by a coiler. The coil was created.

이 과정에서, 압연기와 코일러 사이의 장력은 20N/mm2이었고, 쉬어기 전단시 아래의 표 1에 나타난 바와 같이 쉬어기 핀치롤의 속도 리드율를 변화시켜 가며 압연기와 쉬어기 사이에 부여된 장력을 측정하고, 박판 초부의 박판 웨이브 형성 여부 등을 관찰하여 그 결과를 다시 표 1에 나타내었다.In this process, the tension between the rolling mill and the coiler was 20 N / mm 2, and the tension applied between the rolling mill and the resting by changing the speed lead rate of the resting pinch roll as shown in Table 1 below during shearing. Was measured, and whether or not the thin wave was formed at the beginning of the thin plate was shown in Table 1 again.

[표 1][Table 1]

Figure pat00001
Figure pat00001

표 1에 나타난 바와 같이, 쉬어기로 박판 전단시 쉬어기 핀치롤의 속도 리드율이 본 발명의 범위에 해당하는 발명예1 내지 3은 압연기와 쉬어기 사이에 부여된 장력이 정상 조건에서의 압연기와 코일러 사이의 장력의 50~100%의 범위였으며, 그 결과 박판 초부에 웨이브가 거의 형성되지 않아 평탄도가 양호한 박판을 제조할 수 있음을 확인할 수 있다.As shown in Table 1, Inventive Examples 1 to 3 in which the rate lead rate of the break pinch rolls during shearing of thin sheets with the shear sheet falls within the scope of the present invention, In the range of 50 to 100% of the tension between the coilers, as a result it can be seen that the wave is hardly formed at the beginning of the thin plate can produce a thin plate with good flatness.

반면에, 비교예1 내지 3은 쉬어기로 박판 전단시 쉬어기 핀치롤의 속도 리드율이 5% 미만에 불과하여 부족한 장력으로 인하여 코일러에 권취될 때까지 박판 초부에 웨이브가 다수 형성되었으며, 평탄도가 불량함으로 인하여 형상 개선이 이루어지지 않았음을 확인할 수 있다.On the other hand, in Comparative Examples 1 to 3, the wave lead rate of the shear pinch roll was less than 5% during shearing of the thin plate, and a large number of waves were formed at the beginning of the thin plate until the coil was wound on the coiler due to insufficient tension. It can be seen that the shape is not improved due to the poor degree.

따라서, 본 발명은 이때 쉬어기의 박판 전단시 쉬어기 핀치롤에 속도 리드율을 5~20% 주어 압연기와 쉬어기 핀치롤 사이에 정상 조건의 50~100%의 장력을 부여함으로써 박판 초부의 형상을 양호하게 제어하여 실수율을 향상시킬 수 있는 것이다.Therefore, the present invention at this time give the shear lead pinch roll 5 ~ 20% of the shear thin plate shear of the shear sheet by giving the tension of 50-100% of the normal condition between the rolling mill and the shear pinch roll shape By controlling well, it is possible to improve the error rate.

본 발명은 지금까지 특정한 실시예와 관련하여 도시하고 설명하였지만, 이하의 특허청구범위에 의해 마련되는 본 발명의 정신이나 분야를 벗어나지 않는 한도 내에서 본 발명이 다양하게 변화될 수 있다는 것을 당업계에서 통상의 지식을 가진자는 용이하게 알 수 있을 것이다.While the invention has been shown and described in connection with specific embodiments so far, it will be appreciated that the invention can be varied in various ways without departing from the spirit or scope of the invention as set forth in the claims below. Those skilled in the art will readily know.

1. 주조롤 2. 박판
3. 엔트리 핀치롤 4. 압연기
5. 쉬어기 핀치롤 6. 쉬어기
7. 코일러 핀치롤 8. 코일러1. Casting roll 2. Lamination
3. Entry Pinch Roll 4. Rolling Mill
5. Resting Pinch Roll 6. Resting
7. Coiler Pinch Roll 8. Coiler

Claims (3)

반대 방향으로 회전하는 두 개의 주조롤 사이에 용강이 주입되어 박판을 형성하고, 상기 박판을 압연기로 압연하여 쉬어기 전방에 설치된 쉬어기 핀치롤을 거쳐 코일러에 권취하는 쌍롤식 박판 주조 방법에 있어서,
상기 쉬어기의 박판 전단시에 상기 쉬어기 핀치롤에 속도 리드율을 5~20% 주어, 상기 압연기와 상기 쉬어기 핀치롤 사이에 장력을 부여함으로써 박판 초부의 형상을 양호하게 하는 쌍롤식 박판 주조 방법.In a twin-roll thin sheet casting method in which molten steel is injected between two casting rolls rotating in opposite directions to form a thin plate, and the thin plate is rolled by a rolling mill and wound on a coiler through a thin pinch roll installed in front of the shear. ,
Twin roll type sheet casting which improves the shape of the sheet metal part by giving a tension lead ratio of 5 to 20% to the shear pinch roll at the shearing of the thin sheet of the shear sheet, thereby providing tension between the rolling mill and the shear pinch roll. Way. 제1항에 있어서,
상기 박판 초부는 쉬어기의 박판 전단시, 쉬어기부터 후방 50m까지의 박판 선단부인 것을 특징으로 하는 박판 초부의 형상을 양호하게 하는 쌍롤식 박판 주조 방법.The method of claim 1,
The thin plate sheath is a twin roll thin plate casting method of improving the shape of the thin plate sheath, characterized in that the thin plate front end portion from the rest to the rear 50m at the time of shearing the thin plate. 제1항에 있어서,
상기 장력은 상기 압연기와 코일러 사이에 걸리는 장력 대비 50~100%인 것을 특징으로 하는 박판 초부의 형상을 양호하게 하는 쌍롤식 박판 주조 방법.The method of claim 1,
The tension is a twin-roll thin plate casting method for improving the shape of the thin plate initial portion, characterized in that 50 to 100% of the tension between the rolling mill and the coiler.
KR1020100136260A 2010-12-28 2010-12-28 Twin roll casting process for improving shape of strip top part KR20120074431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100136260A KR20120074431A (en) 2010-12-28 2010-12-28 Twin roll casting process for improving shape of strip top part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100136260A KR20120074431A (en) 2010-12-28 2010-12-28 Twin roll casting process for improving shape of strip top part

Publications (1)

Publication Number Publication Date
KR20120074431A true KR20120074431A (en) 2012-07-06

Family

ID=46708548

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100136260A KR20120074431A (en) 2010-12-28 2010-12-28 Twin roll casting process for improving shape of strip top part

Country Status (1)

Country Link
KR (1) KR20120074431A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104308023A (en) * 2014-10-09 2015-01-28 广东韶钢松山股份有限公司 Bilateral scissors pinch roll step length control method
CN104841697A (en) * 2015-05-15 2015-08-19 南京钢铁股份有限公司 Control method for automatically preventing steel plate from deflection in shearing process of bilateral scissors
CN106271828A (en) * 2016-08-19 2017-01-04 南京钢铁股份有限公司 Circle shear shear history is automatically prevented from the control method of Plate transferring deviation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104308023A (en) * 2014-10-09 2015-01-28 广东韶钢松山股份有限公司 Bilateral scissors pinch roll step length control method
CN104841697A (en) * 2015-05-15 2015-08-19 南京钢铁股份有限公司 Control method for automatically preventing steel plate from deflection in shearing process of bilateral scissors
CN106271828A (en) * 2016-08-19 2017-01-04 南京钢铁股份有限公司 Circle shear shear history is automatically prevented from the control method of Plate transferring deviation

Similar Documents

Publication Publication Date Title
CN103180061B (en) The milling method of flat product and relevant rolling line
KR101067758B1 (en) System and method for endless hot rolling
CA2569841A1 (en) Process and system for manufacturing metal strips and sheets without solution of continuity between continuous casting and rolling
US9186711B2 (en) Rolling line and relative method
CN103191929B (en) Technological method for reducing belt breaking times in rolling mill starting
US9821369B2 (en) Rolling method for strip and corresponding rolling line
CN105080967A (en) Secondary rolling method of broken belt roll of single-rack reversible cold rolling mill
KR20120074431A (en) Twin roll casting process for improving shape of strip top part
US9433983B2 (en) Rolling method for strip and corresponding rolling line
CN103878174B (en) A kind of milling method expanding coiling machine ability and eliminating coiled material head impression
JP5738089B2 (en) Short material rolling apparatus and short material rolling method
CN106064179A (en) A kind of method that the UCM of prevention milling train final pass opens car broken belt
CN110369515A (en) A kind of change specification threading control method of aluminium hot rolling tandem mill unit sheet band
TW202039111A (en) Control system, control method, control device, and program
CN114345980B (en) Method for controlling pinch roll pressure of continuous thin slab casting and rolling coiling machine in sections
CN114345933B (en) Rolling method, device, medium and equipment for ultrathin strip steel
JPH01224102A (en) Facility for continuous casting and rolling of thin sheet
JP3705226B2 (en) Cold rolled steel sheet manufacturing method
KR102089194B1 (en) Hot rolled steel sheet and its manufacturing method
KR101243248B1 (en) Strip Caster Leader Wire Equipment
KR100352605B1 (en) Manufacturing method of ultra-thin hot rolled sheet material
KR101286206B1 (en) Pinch roll of twin roll strip caster
CN204685654U (en) A kind of metallurgical smelting wire squeezes device
CN115971251A (en) Aluminum foil rolling bottoming leveling control process
CN117415168A (en) Strip breakage control method and system for chilled strip steel and chilled strip steel

Legal Events

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