KR100711401B1 - Device for cooling the press roll in hot roll - Google Patents

Device for cooling the press roll in hot roll Download PDF

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Publication number
KR100711401B1
KR100711401B1 KR1020050129066A KR20050129066A KR100711401B1 KR 100711401 B1 KR100711401 B1 KR 100711401B1 KR 1020050129066 A KR1020050129066 A KR 1020050129066A KR 20050129066 A KR20050129066 A KR 20050129066A KR 100711401 B1 KR100711401 B1 KR 100711401B1
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KR
South Korea
Prior art keywords
rolling roll
header
main
auxiliary
injection nozzle
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Application number
KR1020050129066A
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Korean (ko)
Inventor
유종우
원천수
손승락
Original Assignee
주식회사 포스코
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Priority to KR1020050129066A priority Critical patent/KR100711401B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/07—Adaptation of roll neck bearings
    • B21B31/076—Cooling; Lubricating roller bearings
    • 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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • 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
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally

Abstract

본 발명은 강판을 소정의 두께로 압연할 때 상기 강판을 통하여 전달되는 고온에 의해서 가열되는 압연롤을 균일하게 냉각시킬 수 있는 열간 압연기용 압연롤 냉각장치에 관한 것으로서, 그 특징적인 구성은 소정의 두께와 폭을 갖는 강판(2)의 상/하부면에 접촉되는 압연롤(1)과, 상기 압연롤(1)의 표면에 냉각수를 분사시키는 복수개의 주 분사노즐(11)이 길이방향으로 설치된 주 헤더(10)와, 상기 압연롤(1)의 중앙부에 위치되게 주 헤더(10)의 일측에 설치되고 표면에는 복수개의 보조 분사노즐(21)이 길이방향으로 설치된 보조 헤더(20)와, 상기 주 헤더(10) 및 보조 헤더(20)에 연결관(40)을 매개로 연결된 냉각수 공급수단(50)을 포함하여서 된 것이다.The present invention relates to a rolling roll cooling apparatus for a hot rolling mill capable of uniformly cooling a rolling roll heated by a high temperature transmitted through the steel sheet when the steel sheet is rolled to a predetermined thickness. The rolling roll 1 which contacts the upper / lower surface of the steel plate 2 which has thickness and width, and the several main injection nozzle 11 which injects cooling water on the surface of the said rolling roll 1 are provided in the longitudinal direction. A main header 10 and an auxiliary header 20 installed at one side of the main header 10 so as to be positioned at the center of the rolling roll 1 and having a plurality of auxiliary injection nozzles 21 disposed on the surface thereof in a longitudinal direction; It comprises the cooling water supply means 50 is connected to the main header 10 and the auxiliary header 20 via a connecting pipe 40.

강판, 압연롤, 열 크라운, 노즐, 격벽 Steel plate, rolling roll, thermal crown, nozzle, bulkhead

Description

열간 압연기용 압연롤 냉각장치{Device for Cooling the Press Roll in Hot Roll}Roll roll cooling device for hot rolling mill {Device for Cooling the Press Roll in Hot Roll}

도1은 일반적인 압연설비를 나타낸 개략도.1 is a schematic view showing a typical rolling equipment.

도2는 본 발명에 따른 압연롤 냉각장치를 나타낸 사시도.Figure 2 is a perspective view showing a rolling roll cooling apparatus according to the present invention.

도3은 본 발명에 따른 압연롤 냉각장치의 작동상태를 그래프.Figure 3 is a graph of the operating state of the rolling roll cooling apparatus according to the present invention.

??도면의 주요부분에 대한 부호의 설명??Description of symbols for the main parts of the drawing

1 : 압연롤 2 : 강판1 rolling roll 2 steel sheet

10 : 주 헤더 11 : 주 분사노즐10: main header 11: main injection nozzle

20 : 보조 헤더 21 : 보조 분사노즐20: auxiliary header 21: auxiliary injection nozzle

30 : 격벽 40 : 연결관30: bulkhead 40: connector

41 : 밸브 50 : 냉각수 공급수단41: valve 50: cooling water supply means

본 발명은 열간 압연기용 압연롤 냉각장치에 관한 것으로서, 더욱 상세하게는 강판을 소정의 두께로 압연할 때 상기 강판을 통하여 전달되는 고온에 의해서 가열되는 압연롤을 균일하게 냉각시킬 수 있는 열간 압연기용 압연롤 냉각장치에 관한 것이다.The present invention relates to a rolling roll cooling apparatus for a hot rolling mill, and more particularly, for a hot rolling mill capable of uniformly cooling a rolling roll heated by a high temperature transmitted through the steel sheet when rolling a steel sheet to a predetermined thickness. It relates to a rolling roll cooling device.

일반적으로 철 또는 그 합금을 소정의 두께와 폭을 갖는 판 형상의 강판으로 생산할 때에는 압연설비를 사용하고 있다.In general, a rolling facility is used to produce iron or alloys thereof into plate-shaped steel sheets having a predetermined thickness and width.

상기 압연설비는 도1에 나타낸 바와 같이 한 쌍의 압연롤(1) 사이에 강판(2)을 통과시키는 것으로서, 상기 강판(2)은 고온으로 가열된 상태에서 압연롤(1)의 사이를 통과하게 되므로 강판(2)을 압연하는 압연롤(1)은 강판(2)으로부터 전달되는 고온에 의해서 가열되게 된다.As shown in Fig. 1, the rolling equipment passes the steel sheet 2 between the pair of rolling rolls 1, and the steel sheet 2 passes between the rolling rolls 1 while being heated to a high temperature. Since the rolling roll 1 for rolling the steel sheet 2 is to be heated by the high temperature transmitted from the steel sheet (2).

이와 같이 가열되는 압연롤(1)을 냉각시키기 위해서 그 압연롤(1)의 일측에 설치된 분사노즐을 통하여 냉각수를 분사시키고 있다.In order to cool the rolling roll 1 heated in this way, cooling water is sprayed through the injection nozzle provided in one side of the rolling roll 1.

그러나 종래에는 압연롤(1)의 표면에 냉각수가 균일하게 분사되므로 압연롤(1)의 중앙부와 양측 단부의 온도 편차로 인하여 압연롤(1)이 변형되는 열 크라운이 발생하게 된다.However, in the related art, since the cooling water is uniformly sprayed on the surface of the rolling roll 1, a heat crown is generated in which the rolling roll 1 is deformed due to the temperature deviation between the center portion and both ends of the rolling roll 1.

이러한 열 크라운이 발생된 압연롤(1)의 사이를 통과하면서 생산되는 강판(2)은 폭방향 두께 및 형상이 불균일하게 되는 등의 문제점이 있었다.The steel sheet 2 produced while passing between the rolling rolls 1 in which such a heat crown was generated had problems such as uneven thickness and shape in the width direction.

특히 두께가 얇은 강판(박판)(2)을 생산할 때에는 열 크라운에 의하여 두께 및 형상의 변화가 심하게 발생하게 되어 강판(2)의 품질을 떨어뜨리는 문제점이 있었다.In particular, when producing a thin steel sheet (thin plate) (2) there is a problem that the change in thickness and shape is severely generated by the heat crown, which degrades the quality of the steel sheet (2).

또한 열 크라운이 발생된 압연롤(1)을 연속적으로 사용할 경우에는 연속적으로 이동하는 강판(2)이 파손되어 설비의 가동효율을 감소시키게 되는 문제점이 있었다.In addition, in the case of continuously using the rolling roll (1) in which the heat crown is generated, there is a problem that the steel sheet (2) moving continuously to reduce the operating efficiency of the equipment.

본 발명은 상기한 문제점을 해결하기 위하여 발명한 것으로서, 그 목적은 소정의 두께와 폭을 갖도록 강판을 압연하는 압연롤을 균일하게 냉각시켜 강판의 형상변형 및 파손을 미연에 방지할 수 있는 열간 압연기용 압연롤 냉각장치를 제공함에 있다.The present invention has been invented to solve the above problems, the object of the hot rolling mill that can prevent the deformation and breakage of the steel sheet in advance by uniformly cooling the rolling roll for rolling the steel sheet to have a predetermined thickness and width It is to provide a rolling roll cooling device for.

상기 목적을 달성하기 위한 본 발명의 특징적인 구성을 설명하면 다음과 같다.Referring to the characteristic configuration of the present invention for achieving the above object is as follows.

본 발명의 열간 압연기용 압연롤 냉각장치는 소정의 두께와 폭을 갖는 강판의 상/하부면에 접촉되는 압연롤과, 상기 압연롤의 표면에 냉각수를 분사시키는 복수개의 주 분사노즐이 길이방향으로 설치된 주 헤더와, 상기 압연롤의 중앙부에 위치되게 주 헤더의 일측에 설치되고 표면에는 복수개의 보조 분사노즐이 길이방향으로 설치된 보조 헤더와, 상기 주 헤더 및 보조 헤더에 연결관을 매개로 연결된 냉각수 공급수단을 포함하여서 된 것이다.The rolling roll cooling apparatus for a hot rolling mill of the present invention has a rolling roll in contact with the upper and lower surfaces of a steel plate having a predetermined thickness and width, and a plurality of main injection nozzles for spraying cooling water on the surface of the rolling roll in the longitudinal direction. A main header installed, a sub header installed on one side of the main header so as to be positioned at the center of the rolling roll, and a plurality of sub spray nozzles are provided on a surface thereof in a longitudinal direction, and cooling water connected to the main header and the sub header through a connecting pipe Including supply means.

이와 같은 특징을 갖는 본 발명을 상세하게 설명하면 다음과 같다.Referring to the present invention having such characteristics in detail as follows.

도2는 본 발명에 따른 압연롤 냉각장치를 나타낸 사시도이고, 도3은 본 발명에 따른 압연롤 냉각장치의 작동상태를 그래프이다.Figure 2 is a perspective view showing a rolling roll cooling apparatus according to the present invention, Figure 3 is a graph showing the operating state of the rolling roll cooling apparatus according to the present invention.

여기에서 참조되는 바와 같이 본 발명은 소정의 두께와 폭을 갖는 강판(2)을 생산하는 압연롤(1)의 일측에는 주 헤더(10)가 설치되어 있고, 그 주 헤더(10)의 표면에는 압연롤(1)의 표면에 냉각수를 분사시키는 복수개의 주 분사노즐(11)이 등 간격으로 설치되어 있다.As referred to herein, in the present invention, a main header 10 is provided on one side of the rolling roll 1 for producing a steel sheet 2 having a predetermined thickness and width, and the surface of the main header 10 A plurality of main injection nozzles 11 for spraying cooling water on the surface of the rolling roll 1 are provided at equal intervals.

한편, 상기 주 헤더(10)의 일측에는 보조 헤더(20)가 설치되어 있되, 그 보조 헤더(20)는 압연롤(1)의 중앙부에 위치되게 설치되어 있으며, 상기 보조 헤더(20)의 표면에는 복수개의 보조 분사노즐(21)이 등 간격으로 설치되어 있다.On the other hand, one side of the main header 10 is provided with an auxiliary header 20, the auxiliary header 20 is installed to be located in the center of the rolling roll 1, the surface of the auxiliary header 20 The plurality of auxiliary injection nozzles 21 are provided at equal intervals.

또한, 상기 주 헤더(10)와 보조 헤더(20)에는 주 분사노즐(11)과 보조 분사노즐(21)을 분할하는 격벽(30)이 설치되어 있되, 상기 격벽(30)은 주 분사노즐(11) 및 보조 분사 노즐(21)을 통하여 분사되는 냉각수가 소정의 구역으로 구분될 수 있도록 주 헤더(10) 및 보조 헤더(20)의 내부에 내장되어 있다.In addition, the main header 10 and the auxiliary header 20 is provided with a partition wall 30 for dividing the main injection nozzle 11 and the auxiliary injection nozzle 21, the partition 30 is the main injection nozzle ( 11) and the cooling water injected through the auxiliary injection nozzle 21 are embedded in the main header 10 and the auxiliary header 20 so as to be divided into predetermined regions.

상기 주 헤더(10) 및 보조 헤더(20)에는 연결관(40)이 설치되어 있되, 상기 연결관(40)은 격벽(30)에 의해서 분할된 주 분사노즐(11)과 보조 분사노즐(21)에 각각 연결되어 있으며, 각 연결관(40)에는 냉각수의 공급량을 조절하는 밸브(41)가 설치되어 있다.The main header 10 and the auxiliary header 20 is provided with a connecting pipe 40, the connecting pipe 40 is the main injection nozzle 11 and the auxiliary injection nozzle 21 divided by the partition wall (30). Are respectively connected to each other, and each of the connecting pipes 40 is provided with a valve 41 for adjusting a supply amount of cooling water.

그리고, 상기 연결관(40)에는 냉각수를 공급하는 냉각수 공급수단(50)이 연결되어 있다.In addition, the connection pipe 40 is connected to the cooling water supply means 50 for supplying the cooling water.

이와 같이 구성된 본 발명을 상세히 설명하면 다음과 같다.Referring to the present invention configured as described in detail as follows.

압연롤(1)을 회전시키면서 강판(2)을 생산할 때 상기 강판(2)에 의해서 고온으로 가열되는 압연롤(1)을 냉각시킬 때에는 냉각수 공급수단(50)을 작동시키면, 냉각수는 연결관(40)을 통하여 주 헤더(10)에 설치된 주 분사노즐(11) 및 보조 헤더(20)에 설치된 보조 분사노즐(21)을 통하여 분사되므로 압연롤(1)을 냉각시키게 되는 것이다.When cooling the rolling roll 1 heated to a high temperature by the steel sheet 2 while producing the steel sheet 2 while rotating the rolling roll 1, when the cooling water supply means 50 is operated, the cooling water is connected to the connecting pipe ( 40 is injected through the main injection nozzle 11 installed on the main header 10 and the auxiliary injection nozzle 21 installed on the auxiliary header 20 to cool the rolling roll 1.

이때, 상기 압연롤(1)에 의해서 소정의 두께와 폭으로 생산되는 강판(2)의 두께 및 폭에 따라서 압연롤(1)의 가열량 및 온도 분포가 변경되는 것이다.At this time, the heating amount and the temperature distribution of the rolling roll 1 is changed according to the thickness and width of the steel sheet 2 produced in the predetermined thickness and width by the rolling roll (1).

이와 같은 압연롤(1)의 가열량 및 온도 분포에 따라서, 연결관(40)에 설치된 밸브(41)의 개폐량을 조절하면 주 분사노즐(11) 및 보조 분사노즐(21)을 통하여 분사되는 냉각수의 분사량이 제어되는 것으로서, 압연롤(1)을 균일하게 냉각시키게 되는 것이다.According to the heating amount and the temperature distribution of the rolling roll 1, the opening and closing amount of the valve 41 provided in the connecting pipe 40 is adjusted to be injected through the main injection nozzle 11 and the auxiliary injection nozzle 21. As the injection amount of the cooling water is controlled, the rolling roll 1 is cooled uniformly.

즉, 도3에 나타낸 바와 같이 격벽(30)에 의해서 주 헤더(10) 및 보조 헤더(20)의 내부가 분할되어 있으므로, 주 헤더(10)에 설치된 주 분사노즐(11) 및 보조 헤더(20)에 설치된 보조 분사노즐(21)을 통하여 분사되는 냉각수는 소정의 구역으로 분할된 상태로 분사되는 것이며, 이때 각 구역을 통하여 분사되는 냉각수의 분사량은 밸브(41)에 의해서 제어하는 것으로서, 강판의 두께 및 폭이 변경되어도 압연롤(1)을 균일하게 냉각시킬 수 있는 것이다.That is, since the inside of the main header 10 and the auxiliary header 20 are divided by the partition 30 as shown in FIG. 3, the main injection nozzle 11 and the auxiliary header 20 provided in the main header 10 are divided. Coolant injected through the auxiliary injection nozzle 21 installed in the) is to be sprayed in a divided state into a predetermined zone, wherein the injection amount of the coolant injected through each zone is controlled by the valve 41, Even if the thickness and width are changed, the rolling roll 1 can be cooled uniformly.

이와 같이 본 발명은 압연롤의 일측에 주 분사노즐 및 보조 분사노즐을 설치하는 한편, 상기 주 분사노즐 및 보조 분사노즐을 격벽을 중심으로 분할하여 압연롤에 분사되는 냉각수의 공급량을 조절하게 되므로 상기 압연롤의 온도 편차를 최소화 할 수 있는 것이다.Thus, in the present invention, the main injection nozzle and the auxiliary injection nozzle are installed on one side of the rolling roll, and the main injection nozzle and the auxiliary injection nozzle are divided around the partition wall so that the amount of cooling water injected to the rolling roll is adjusted. The temperature variation of the rolling roll can be minimized.

또한, 상기 압연롤의 온도편차가 최소화 되므로 일정한 폭과 두께를 갖는 강판을 연속적으로 생산할 수 있는 특유의 효과가 있다.In addition, since the temperature deviation of the rolling roll is minimized, there is a unique effect of continuously producing a steel sheet having a constant width and thickness.

Claims (3)

소정의 두께와 폭을 갖는 강판(2)의 상/하부면에 접촉되는 압연롤(1)과, 상기 압연롤(1)의 표면에 냉각수를 분사시키는 복수개의 주 분사노즐(11)이 길이방향으로 설치된 주 헤더(10)와, 상기 압연롤(1)의 중앙부에 위치되게 주 헤더(10)의 일측에 설치되고 표면에는 복수개의 보조 분사노즐(21)이 길이방향으로 설치된 보조 헤더(20)와, 상기 주 분사노즐(11)과 보조 분사노즐(21)을 분할하기 위해 상기 주 헤더(10)와 보조 헤더(20)에 설치된 격벽(30)과, 상기 주 헤더(10) 및 보조 헤더(20)에 연결관(40)을 매개로 연결된 냉각수 공급수단(50)을 포함함을 특징으로 하는 열간 압연기용 압연롤 냉각장치.The rolling roll 1 which contacts the upper / lower surface of the steel plate 2 which has a predetermined thickness and width, and the several main injection nozzles 11 which inject coolant to the surface of the said rolling roll 1 in the longitudinal direction The main header 10 is installed in one side, and the auxiliary header 20 is installed on one side of the main header 10 to be located in the center portion of the rolling roll 1 and a plurality of auxiliary injection nozzles 21 are provided on the surface in the longitudinal direction. And partition walls 30 provided on the main header 10 and the sub header 20 to divide the main injection nozzle 11 and the sub injection nozzle 21, and the main header 10 and the sub header ( 20) a rolling roll cooling device for a hot rolling mill, characterized in that it comprises a cooling water supply means (50) connected via a connecting pipe (40). 삭제delete 제1항에 있어서, 상기 연결관(40)은 상기 격벽(30)에 의해서 분할된 주 분사노즐(11)과 보조 분사노즐(21)에 각각 연결되고, 각 연결관(40)에는 냉각수의 공급량을 조절하는 밸브(41)가 설치됨을 특징으로 하는 열간 압연기용 압연롤 냉각장치.According to claim 1, wherein the connecting pipe 40 is connected to the main injection nozzle 11 and the auxiliary injection nozzle 21 divided by the partition wall 30, respectively, the supply amount of cooling water to each connection pipe (40) Rolling roll cooling apparatus for a hot rolling mill, characterized in that the valve 41 for adjusting the installed.
KR1020050129066A 2005-12-23 2005-12-23 Device for cooling the press roll in hot roll KR100711401B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699044A (en) * 2012-06-15 2012-10-03 无锡西姆莱斯石油专用管制造有限公司 Rapid locating device of rolling frame water adapter
CN116140367A (en) * 2023-03-13 2023-05-23 南通瑞升运动休闲用品有限公司 Roller cooling device and method for rolling composite metal material

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JPH07290120A (en) * 1994-04-28 1995-11-07 Kawasaki Steel Corp Cooling device for roll
JPH115105A (en) 1997-06-12 1999-01-12 Kawasaki Steel Corp Injection of coolant liquid in strip rolling
KR20040056060A (en) * 2002-12-23 2004-06-30 주식회사 포스코 A hot work roll cooling apparatus and its control method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07290120A (en) * 1994-04-28 1995-11-07 Kawasaki Steel Corp Cooling device for roll
JPH115105A (en) 1997-06-12 1999-01-12 Kawasaki Steel Corp Injection of coolant liquid in strip rolling
KR20040056060A (en) * 2002-12-23 2004-06-30 주식회사 포스코 A hot work roll cooling apparatus and its control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699044A (en) * 2012-06-15 2012-10-03 无锡西姆莱斯石油专用管制造有限公司 Rapid locating device of rolling frame water adapter
CN116140367A (en) * 2023-03-13 2023-05-23 南通瑞升运动休闲用品有限公司 Roller cooling device and method for rolling composite metal material
CN116140367B (en) * 2023-03-13 2023-12-22 南通瑞升运动休闲用品有限公司 Roller cooling device and method for rolling composite metal material

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