KR960033577A - Hot rolling method and apparatus - Google Patents

Hot rolling method and apparatus Download PDF

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Publication number
KR960033577A
KR960033577A KR1019960005545A KR19960005545A KR960033577A KR 960033577 A KR960033577 A KR 960033577A KR 1019960005545 A KR1019960005545 A KR 1019960005545A KR 19960005545 A KR19960005545 A KR 19960005545A KR 960033577 A KR960033577 A KR 960033577A
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South Korea
Prior art keywords
rolled material
rolling
mill
rolling mill
rolled
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KR1019960005545A
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Korean (ko)
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KR100216641B1 (en
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꾸니오 세끼구찌
요시하루 안베
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사또 후미오
가부시끼가이샤 도시바
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Publication of KR100216641B1 publication Critical patent/KR100216641B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24Automatic variation of thickness according to a predetermined programme
    • B21B37/26Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

본 발명은 에너지 절약과 고생산성의 쌍방으로 만족시킴과 동시에 얇은 판판두의 제조를 용이하게 하는 열간압연 방법 및 장치를 제공한다.The present invention provides a method and apparatus for hot rolling that satisfies both energy saving and high productivity while facilitating the production of a thin plate.

적어도 연속주조설비(7), 터널로(14), 압연기(10), 스트립절단기(11) 및 다운코일러(6)를 순차적으로 배치하고, 연속주조설비로 제조된 단일의 슬랩을 터널로로 보열 또는 가열하고, 터널로를 나온 슬랩을 압연기로 목표 판두께로 압연하여 다운코일러로 감고, 감겨진 압연재가 소정의 길이가 되도록 스트립절단기로 압연재를 주행간에 절단하는 열간압연장치에 있어서, 압연기의 인출측의 목표판두께를 주행간에 변경하는 주행간 판두께 변경을 실행하여 동일한 슬랩으로부터 상이한 판두께의 코일을 제조한다. 또 조압연기(12), 마무리 압연기(13)를 갖는 압연장치에서는 조압연기 및 마무리 압연기를 근접 배치하여, 터널로로 보열 또는 가열된 슬랩을 조압연기로 목표 판두께의 바로 압연하고, 이 바를 마무리 압연기로 연속적으로 목표 판두께로 압연하는 열간 압연장치에 있어서, 조압연기에서의 주행간 바 두께 변경 및/또는 마무리 압연기에서의 주행간 판두두 변경을 실행하여, 동일한 슬랩으로부터 상이한 판두께의 코일을 제조한다.At least a continuous casting facility 7, a tunnel furnace 14, a rolling mill 10, a strip cutter 11 and a down coiler 6 are sequentially arranged and a single slab made of a continuous casting facility is introduced into a tunnel A hot rolling apparatus for heating or heating a slab, a slab coming out of a tunnel through a rolling mill to a target thickness, winding the slab in a down coiler, and cutting the rolled material between runs by a strip cutter so that the rolled material has a predetermined length, A plate thickness change between runs for changing the target plate thickness on the drawing side of the rolling machine between runs is made to produce coils of different plate thickness from the same slab. In the rolling apparatus having the rough rolling mill 12 and the finishing rolling mill 13, the rough rolling mill and the finishing rolling mill are disposed close to each other, and the slab heated or heated by the tunnel is immediately rolled to the target sheet thickness with the rough rolling mill, In a hot rolling apparatus for continuously rolling to a target plate thickness with a rolling machine, a change in bar thickness between runs in a roughing mill and / or a change in running plate width in a finish rolling mill is carried out to obtain coils of different plate thickness .

Description

열간압연방법 및 장치Hot rolling method and apparatus

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명에 관한 열간압연방법을 실시하는 열간압연장치와 제1의 실시예의 라인 구성을 나타낸 도면,FIG. 1 is a diagram showing the line configuration of the hot rolling apparatus for carrying out the hot rolling method according to the present invention and the first embodiment,

제2도는 제1도에 나타낸 실시예의 동작을 설명하기 위해, 압력속도와 시간간의 관계를 나타낸 도면,2 is a diagram showing the relationship between the pressure rate and time in order to explain the operation of the embodiment shown in FIG. 1,

제3도는 제1도에 나타낸 실시예의 동작을 설명하기 위해, 슬랩길이와 주행간 판두께 변경점간의 관계를 나타낸 도면,3 is a diagram showing the relationship between the slab length and the plate thickness change point between runs for explaining the operation of the embodiment shown in FIG. 1;

제4도는 본 발명에 관한 열간압연 방법을 실시하는 열간압연장치의 제2의 실시에의 라인 구성을 나타낸 도면,FIG. 4 is a diagram showing a line configuration in a second embodiment of the hot rolling apparatus for carrying out the hot rolling method according to the present invention,

제5도는 본 발명에 관한 열간압연방법을 실시하는 열간압연장치의 제3의 실시예의 라인구성을 나타낸 도면.FIG. 5 is a view showing a line configuration of a third embodiment of the hot rolling apparatus for carrying out the hot rolling method according to the present invention. FIG.

Claims (5)

적어도 연속주조설비, 압연재 가열장치, 압연기, 스트립절단기 및 다운 코일러를 순차적으로 배치하고, 상기 연속주조설비로 제조된 압연재를 상기 압연재 가열장치로 보열 또는 가열하여 상기 압연기로 목표 판두께로 압연하고, 상기 다운 코일러로 감아서, 감겨진 압연재가 소정의 길이가 되도록 상기 스트립 절단기로 압연재를 절단하는 열간압연장치에 있어서, 상기 압연재 가열장치로부터 나온 압연재의 선단으로부터 길이를 측정하여, 이 압연재에 미리 정해진 판두께 변경점이 상기 압연기에 도달한 것을 검출하여 타이밍 신호를 출력하는 압연재 길이 측정장치와, 상기 압연기의 압하위치 설정치와 롤 속도 설정치를 연산하는 설정치 계산부 및 상기 설정치 계산부로 결정된 압하위치 설정치 및 롤 속도 설정치를 사용하여 상기 타이밍 신호에 따라 압하위치 및 롤속도 설정치를 주행간에 변경하는 압연기 제어부를 갖는 주행간 판두께 변경, 제어장치와, 상기 압연기의 인출측에서의 판두께 변경점의 위치를 검출하는 판두께 변경점 트래킹장치와, 상기 판두께 변경점 트래킹 장치의 출력에 따라 상기 스트립 절단기로 압연재를 절단하는 스트립 절단기 제어장치를 갖추어, 동일한 압연재로부터 상이한 판두께의 코일을 연속적으로 제조하는 것을 특징으로 하는 열간압연장치.A continuous casting facility, a rolled material heating apparatus, a rolling mill, a strip cutter and a down coiler are sequentially arranged, and the rolled material produced by the continuous casting facility is pumped or heated by the rolled material heating apparatus, , And the rolled material is rolled with the down coiler to cut the rolled material with the strip cutter so that the rolled rolled material has a predetermined length, the hot rolled material having a length from the front end of the rolled material coming from the rolled material heating device A rolled material length measuring device for measuring a rolled material to determine that a predetermined sheet thickness change point has reached the rolling mill and outputting a timing signal; a set value calculating section for calculating a roll down set value and a roll speed set value of the rolling mill; And a roll speed setting value determined by the set value calculation section, A plate thickness changing point tracking device for detecting a position of a plate thickness changing point on a drawing side of the rolling mill; a plate thickness changing point detecting device for detecting a plate thickness changing point, And a strip cutter control device for cutting the rolled material with the strip cutter in accordance with the output of the tracking device to continuously produce coils of different sheet thickness from the same rolled material. 적어도 연속주조설비, 압연재 가열장치, 조압연기, 마무리압연기, 스트립절단기 및 다운코일러를 순차적으로 배치함과 동시에, 상기 조압연기와 상기 마무리 압연기를 근접 배치하여, 상기 연속주조설비로 제조된 압연재를 상기 안연재 가열장치로 보열 또는 가열하고 상기 조압연기로 목표로 하는 두께의 바로 압연하고, 다시 상기 마무리 압연기로 연속적으로 목표 판두께로 압연한 후, 상기 다운 코일러로 감아서 감겨진 압연재가 소정의 길이가 되도록 상기 스트립 절단기로 압연재를 절단하는 열간압연장치에 있어서, 상기 압연재 가열장치로부터 나온 압연재의 선단으로부터의 길이를 측정하여, 이 압연재에 미리 정해진 판두께 변경점이 상기 조압연기에 도달한 것을 검출하여 타이밍 신호를 출력하는 압연재 길이 측정장치와, 상기 조압연기의 압하위치 설정치와 롤 속도 설정치를 연산함과 동시에, 상기 마무리 압연기의 압하위치설정치 및 롤 속도 설정치를 연산하는 설정치 계산부 및 상기 설정치 계산부로 결정한 압하위치 설정치 및 롤 속도 설정치를 사용하여 상기 타이밍 신호에 따라 상기 조압연기 및 상기 마무리 압연기의 압하위치 및 롤 속도 설정치 주행간에 변경하는 압연기 제어부를 갖는 주행간 판두께 변경 제어장치와, 상기 압연기의 인출측에서의 판두께 변경점의 위치를 검출하는 판두께 변경점 트래킹장치와, 상기 판두께 변경점 트래킹 장치의 출력에 따라 상기 스트립 절단기로 압연재를 절단하는 스트립 절단기 제어장치를 갖추어, 동일한 압연재로부터 상이한 판두께의 코일을 연속적으로 제조하는 것을 특징으로 하는 것을 특징으로 하는 열간압연장치.Wherein at least a continuous casting facility, a rolled material heating apparatus, a roughing mill, a finishing mill, a strip cutter and a down coiler are sequentially arranged and the roughing mill and the finishing mill are disposed close to each other, The strip is pumped or heated by the above-mentioned longitudinal steel heating device, immediately rolled to a desired thickness by the rough rolling mill, and then continuously rolled to the target plate thickness by the finish rolling mill, and then rolled with the down coiler, A method for cutting a rolled material with a strip cutter so as to have a predetermined length, the method comprising the steps of: measuring a length of the rolled material from a front end of the rolled material heated by the rolled material heating device; A rolled material length measuring device for detecting the arrival at the roughing mill and outputting a timing signal; A set value calculation section for calculating a set position value and a roll speed set value and calculating a set value and a set value for roll speed of the finishing mill; and a set value calculation section for calculating a set value and a roll speed set value, And a rolling control unit for changing between a rolling position and a roll speed set value travel of the rough rolling mill and the finishing rolling mill in accordance with the sheet thickness change point of the rolling mill, And a strip cutter control device for cutting the rolled material with the strip cutter in accordance with the output of the plate thickness change point tracking device to continuously produce coils of different sheet thickness from the same rolled material Hot rolling equipment. 제2항에 있어서, 압연재의 폭방향의 압연을 하는 수직 압연기와 두께 방향의 압연을 하는 수평 압연기를 갖는 조압연기와, 압연재 가열장치로부터 나온 압연재의 선단으로부터의 압연재 길이를 측정하여, 미리 정해진 판두께 변경점 위치가 상기 수직 압연기에 도달한 것을 검출하는 압연재 길이 측정장치와, 상기 판두께 변경점에서 바 폭을 변경하기 위해 상기 수직 압연기의 롤 열림도 설정치를 계산하는 설정치 계산부 및 상기 설정치 계산부로 결정된 수직 압연기 롤 열림도 설정치를 사용하여 상기 타이밍 신호에 따라 상기 수직 압연기의 롤 열림도를 주행간에 변경하는 압연기 제어부를 갖는 주행간 바 폭 변경제어장치를 갖추어, 동일 압연재로부터 상이한 판두께 및/또는 판 폭의 복수의 코일을 연속적으로 제조하는 열간압연장치.The method of claim 2, further comprising: a roughing mill having a vertical mill for rolling in the width direction of the rolled material, a horizontal mill for rolling in the thickness direction, and a rolled material length from the front end of the rolled material from the rolled material heating device A set value calculation unit for calculating a roll opening degree set value of the vertical mill to change the bar width at the plate thickness changing point, And a rolling control section for changing the roll opening degree of the vertical rolling mill in accordance with the timing signal using the vertical roll rolling opening degree set value determined by the set value calculating section, A hot rolling apparatus for continuously producing a plurality of coils of plate thickness and / or plate width. 적어도 연속주조설비, 압연재 가열장치, 압연기, 스트립절단기 및 다운코일러를 순차적으로 배치하고, 상기 연속주조설비로 제조된 단일의 압연재를 압연재가열장치로 보열 또는 가열하고, 상기 압연가열장치를 나온 압연재를 상기 압연기로 목표 판두께로 압연하여 상기 다운 코일러로 감고, 감겨진 압연재가 소정의 길이가 되도록 상기 스트립 절단기로 압연재를 복수회에 걸쳐 주행간에 절단하고, 상기 압연재의 인출측의 목표 판두께를 주행간에 변경하는 주행간 판두께 변경을 실행하여 동일한 압연재로부터 상이한 판두께의 코일을 제조하는 것을 특징으로 하는 열간압연방법.Wherein at least a continuous casting facility, a rolled material heating apparatus, a rolling mill, a strip cutter and a down coiler are sequentially arranged, a single rolled material produced by the continuous casting facility is boiled or heated by a rolling reheating apparatus, Rolled material is rolled up to the target thickness by the rolling mill and wound with the down coiler and the rolled material is cut into a plurality of runs with the strip cutter so that the rolled rolled material has a predetermined length, Wherein a coil having a different sheet thickness is manufactured from the same rolled material by executing a plate thickness change between runs for changing the target plate thickness between runs. 적어도 연속주조설비, 압연재 가열장치, 압연기, 스트립절단기 및 다운코일러를 순차적으로 배치함과 동시에 조압연기 및 마무리 압연기를 근접 배치하고, 상기 연속 주조설비로 제조된 단일의 압연재를 상기 압연재 가열장치로 보열 또는 가열하고, 상기 압연재 가열장치를 나온 압연재를 상기 압연기로 목표 판두께의 바로 압연하고, 이 바를 상기 마무리 압연기로 연속적으로 목표 판두께로 압연하여 상기 다운 코일러로 감고, 감겨진 압연재가 소정의 길이가 되도록 상기 스트립 절단기로 압연재를 복수회에 걸쳐 주행간에 절단하고, 상기 조압연재에서 바두께를 주행간에 변경하는 주행간 판두께 변경 및/또는 마무리 압연기에서 목표 판두께를 주행간에 변경하는 주행간 판두께 변경을 실행하여 동일한 압연재로부터 상이한 판두께의 코일을 제조하는 것을 특징으로 하는 열간압연장치.Wherein at least a continuous casting facility, a rolled material heating apparatus, a rolling mill, a strip cutter and a down coiler are sequentially arranged, a rough rolling mill and a finishing rolling mill are disposed close to each other, and a single rolled material produced by the continuous casting plant is rolled Heating the rolled material out of the rolled material heating apparatus to a target thickness by means of the rolling mill, rolling the rolled material to a target thickness continuously with the finishing mill, winding the rolled material into the down coiler, A step of cutting the rolled material between a plurality of times with the strip cutter so that the rolled rolled material has a predetermined length and changing the thickness of the bar between runs in the controlled rolled material and / To change the running plate thickness between runs so as to manufacture coils of different plate thickness from the same rolled material Hot rolling device, characterized in that the. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960005545A 1995-03-03 1996-03-04 Method and device for hot-rolling KR100216641B1 (en)

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