WO2009153415A1 - Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu - Google Patents
Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu Download PDFInfo
- Publication number
- WO2009153415A1 WO2009153415A1 PCT/FR2008/000857 FR2008000857W WO2009153415A1 WO 2009153415 A1 WO2009153415 A1 WO 2009153415A1 FR 2008000857 W FR2008000857 W FR 2008000857W WO 2009153415 A1 WO2009153415 A1 WO 2009153415A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cage
- rolling
- cylinder
- dedicated
- change
- Prior art date
Links
Classifications
-
- 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
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-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
- B21B1/22—Metal-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
- B21B1/24—Metal-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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B2013/003—Inactive rolling stands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/14—Reduction rate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2271/00—Mill stand parameters
- B21B2271/02—Roll gap, screw-down position, draft position
-
- 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
- B21B37/58—Roll-force control; Roll-gap control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
- Y10T29/49721—Repairing with disassembling
- Y10T29/4973—Replacing of defective part
Definitions
- the present invention relates to a method of changing a roll in a rolling mill for a continuously moving steel strip according to the preamble of claim 1.
- the invention relates to the technical field of cold rolling steel strips on a continuous tandem type rolling mill, requiring changes of the rolling rolls.
- tandem-type cold rolling mills There are several types of tandem-type cold rolling mills: conventional rolling mills that are reel-to-reel and capable of producing 700,000 to 1,500,000 tonnes of rolled steel per year, have a high investment cost and exhibit the disadvantage of requiring the engagement of the head of each coil throughout the installation.
- Other tandem rolling mills are organized in order to operate continuously, the tail of a coil emerging from the unwinding member being welded to the head of a new coil unwound by a second unwinding member.
- Such continuous rolling mills reach productions of 1,000,000 to 3,000,000 t / year.
- the drop in productivity due to cylinder changes is particularly important for rolling mill stands equipped with very small cylinders whose work hardening and surface wear are very fast, for example multicylinder cages used for rolling stainless steels.
- a suitable method for a tandem rolling mill with 6 stands is for example described in JP 62-275515.
- This method of changing rolls of a rolling stand is adapted to support at least one working roll for a continuously running steel strip mill, said stand being part of a plurality of rolling stands placed successively along rolling mill in a direction of continuous scrolling.
- a cylinder change is envisaged on any cage (according to an example described in FIG. 2 of said document)
- its stop is prepared by distributing its reduction ratio (percentage reduction in thickness of the rolled product) on the upstream cages. and downstream in a following time sequence:
- the rolling scheme that is to say for a given product and a target output thickness (involving the reduction rate in each cage, the rotational speed of the cylinders in each cage, the traction between each cage ) must be modified for six cages twelve times throughout the change procedure in order to distribute on each of the cages upstream and downstream of the change site a portion of the unrealized thickness reduction in the cage being changed.
- An object of the present invention is to propose a method of changing a cylinder (s) of a rolling stand adapted to support at least one working roll for a continuous strip steel strip rolling mill, said method for solving the aforementioned problems.
- a solution is proposed by a method through claim 1.
- a rolling waiting function under a free cylinder clamping position (s) (that is to say free of pressure on the band) is assigned to at least one dedicated cage on the plurality of cages,
- the rolling mill comprises a number of cages one of which is permanently in free tightening function (said dedicated cage).
- said dedicated cage according to the invention is substituted for the cage for which at least one cylinder must be changed.
- the time sequence of increasing and then decreasing the cage clamps according to the transferred / redistributed setpoint values can therefore be greatly simplified and reduced, which makes the strip thickness at the outlet of the rolling mill better controllable within the required tolerances, as well as guarantees an excellent upgrade.
- the invention allows a change of cylinders free of any break tape.
- the productivity of the mill remains at a maximum, as in the non-change cylinder phase.
- a set of subclaims also has advantages of the invention according to different aspects or embodiments.
- Figures 2a, 2b change method according to a variant of the first embodiment of the invention
- Figures 3a, 3b, 3c change method according to a second embodiment of the invention.
- a rolling waiting function under a free clamping position of a cylinder (s) is assigned to at least one dedicated cage CA on the plurality N of the cages,
- the strip B is constantly rolled by passing through roll stands on a total number of rolls of the mill, any of the stands of the rolling mill being in the course of being changed (and thus designated by the stand C ) is in the waiting position of a new change operation (and thus designated by the cage CA or C).
- the method under a first embodiment has two variants, respectively represented by the figures la, Ib and 2a, 2b.
- the last set value R5 on the fifth cylinder C5 allows the strip to have a thickness E at the output of the rolling mill.
- the method can therefore be applied without temporal limitation, if desired, by simply reallocating the waiting function (rolling free) of the dedicated cage on one of the cages where is involved. a change of cylinder, thus waiting for a next cage change.
- the last set value R5 on the sixth cylinder C6 allows the strip to have a thickness E at the output of the rolling mill.
- the first and second cage C1, C2 retain their clamping position below their respective set values R1, R2.
- the method can therefore be applied without time limit, if desired, simply by reassigning the waiting function (rolling free) of the dedicated cage to one of the cages where a change of cylinder has taken place, thus waiting for a next cage change.
- the cage CA is dedicated to allow a change of cylinders of all other cages located upstream. It is only put into service when any roll stand is in the process of changing rolls and only for the duration of this change. Except for cylinder change operations, this dedicated cage is in the waiting position (free of rolling function).
- this dedicated cage CA is placed downstream of the last active rolling stand which is the one whose cylinders are most often changed.
- Figure 3c is a classic return to Figure 3a.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0822799-3A BRPI0822799A2 (pt) | 2008-06-19 | 2008-06-19 | Método de mudança de cilindro em um laminador para uma cinta em aço em passagem contínua |
CN200880129890.9A CN102066015B (zh) | 2008-06-19 | 2008-06-19 | 更换连续行进钢带所用轧机中的辊的方法 |
JP2011514080A JP5474059B2 (ja) | 2008-06-19 | 2008-06-19 | 連続的に走行する鋼ストリップのための圧延機においてロールを交換するための方法 |
EP08874694.6A EP2303482B1 (fr) | 2008-06-19 | 2008-06-19 | Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu |
US13/000,062 US8479366B2 (en) | 2008-06-19 | 2008-06-19 | Method for changing a roller in a roll mill for a continuously running steel strip |
KR1020107028492A KR101460841B1 (ko) | 2008-06-19 | 2008-06-19 | 연속 진행 강철 스트립을 위한 압연기의 롤러를 교체하는 방법 |
PCT/FR2008/000857 WO2009153415A1 (fr) | 2008-06-19 | 2008-06-19 | Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu |
RU2011101722/02A RU2472597C2 (ru) | 2008-06-19 | 2008-06-19 | Способ замены валка в прокатном стане для непрерывно движущейся стальной полосы |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR2008/000857 WO2009153415A1 (fr) | 2008-06-19 | 2008-06-19 | Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009153415A1 true WO2009153415A1 (fr) | 2009-12-23 |
Family
ID=40263396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2008/000857 WO2009153415A1 (fr) | 2008-06-19 | 2008-06-19 | Méthode de changement de cylindre dans un laminoir pour une bande d'acier en défilement continu |
Country Status (8)
Country | Link |
---|---|
US (1) | US8479366B2 (fr) |
EP (1) | EP2303482B1 (fr) |
JP (1) | JP5474059B2 (fr) |
KR (1) | KR101460841B1 (fr) |
CN (1) | CN102066015B (fr) |
BR (1) | BRPI0822799A2 (fr) |
RU (1) | RU2472597C2 (fr) |
WO (1) | WO2009153415A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2777832A1 (fr) | 2013-03-13 | 2014-09-17 | Siemens VAI Metals Technologies GmbH | Dispositif de mise en rotation de cylindres de travail d'un laminoir et méthode de changement des dits cylindres |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015218360A1 (de) * | 2015-09-24 | 2017-03-30 | Sms Group Gmbh | Walzgerüst und Verfahren zum Wechseln von Arbeitswalzen |
EP3208673B1 (fr) | 2016-02-22 | 2019-06-05 | Primetals Technologies Austria GmbH | Étalonnage en ligne d'une emprise de laminage d'une cage de laminoir |
FR3050128B1 (fr) | 2016-04-18 | 2018-09-07 | Fives Dms | Procede de changement des cylindres d'un laminoir |
CN105945071A (zh) * | 2016-06-24 | 2016-09-21 | 燕山大学 | 一种esp无头轧制中精轧机组在线换辊设备及方法 |
CN112380634B (zh) * | 2019-07-29 | 2024-03-01 | 上海梅山钢铁股份有限公司 | 一种适应于热轧老轧机提高精轧工作辊有效工作层的方法 |
CN114985474B (zh) * | 2022-05-06 | 2023-04-18 | 燕山大学 | 一种ds轧机机组动态错位变规程在线换辊的工艺方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62101307A (ja) * | 1985-10-29 | 1987-05-11 | Ishikawajima Harima Heavy Ind Co Ltd | ロ−ル組替方法 |
JPS62101309A (ja) * | 1985-10-29 | 1987-05-11 | Ishikawajima Harima Heavy Ind Co Ltd | ロ−ルシフト方法 |
JPS62275515A (ja) * | 1986-05-22 | 1987-11-30 | Nippon Steel Corp | 連続圧延制御方法 |
DE4104001A1 (de) * | 1991-02-09 | 1992-08-13 | Schloemann Siemag Ag | Verfahren und anlage zum auswalzen von durch stranggiessen hergestellten vorbaendern bzw. duennbrammen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3913368A (en) * | 1974-09-04 | 1975-10-21 | Blaw Knox Foundry Mill Machine | Tandem rolling mill |
SU995944A1 (ru) * | 1981-07-14 | 1983-02-15 | Центральное Проектно-Конструкторское Бюро По Системам Автоматизации Производства "Союзпромавтоматика" Минприбора | Устройство дл автоматизированной замены клетей при бесконечной прокатке полосы |
JPS5933014A (ja) * | 1982-08-18 | 1984-02-22 | Kawasaki Steel Corp | 完全連続タンデムミルのロ−ル交換方法 |
RU2006304C1 (ru) * | 1992-04-20 | 1994-01-30 | Производственное Объединение "Электростальтяжмаш" | Способ перевалки рабочих валков клетей линейного прокатного стана и рабочая линия для его осуществления |
DE10138589A1 (de) * | 2001-08-06 | 2003-02-20 | Sms Demag Ag | Vorrichtung und Arbeitsverfahren zum automatischen Wechseln der Arbeits, Stütz- und Zwischenwalzen eines ein- oder mehrgerüstigen Bandwalzwerkes |
-
2008
- 2008-06-19 WO PCT/FR2008/000857 patent/WO2009153415A1/fr active Application Filing
- 2008-06-19 KR KR1020107028492A patent/KR101460841B1/ko not_active IP Right Cessation
- 2008-06-19 BR BRPI0822799-3A patent/BRPI0822799A2/pt not_active IP Right Cessation
- 2008-06-19 EP EP08874694.6A patent/EP2303482B1/fr not_active Revoked
- 2008-06-19 US US13/000,062 patent/US8479366B2/en not_active Expired - Fee Related
- 2008-06-19 CN CN200880129890.9A patent/CN102066015B/zh not_active Expired - Fee Related
- 2008-06-19 RU RU2011101722/02A patent/RU2472597C2/ru not_active IP Right Cessation
- 2008-06-19 JP JP2011514080A patent/JP5474059B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62101307A (ja) * | 1985-10-29 | 1987-05-11 | Ishikawajima Harima Heavy Ind Co Ltd | ロ−ル組替方法 |
JPS62101309A (ja) * | 1985-10-29 | 1987-05-11 | Ishikawajima Harima Heavy Ind Co Ltd | ロ−ルシフト方法 |
JPS62275515A (ja) * | 1986-05-22 | 1987-11-30 | Nippon Steel Corp | 連続圧延制御方法 |
DE4104001A1 (de) * | 1991-02-09 | 1992-08-13 | Schloemann Siemag Ag | Verfahren und anlage zum auswalzen von durch stranggiessen hergestellten vorbaendern bzw. duennbrammen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2777832A1 (fr) | 2013-03-13 | 2014-09-17 | Siemens VAI Metals Technologies GmbH | Dispositif de mise en rotation de cylindres de travail d'un laminoir et méthode de changement des dits cylindres |
Also Published As
Publication number | Publication date |
---|---|
JP5474059B2 (ja) | 2014-04-16 |
JP2011524810A (ja) | 2011-09-08 |
RU2472597C2 (ru) | 2013-01-20 |
BRPI0822799A2 (pt) | 2015-06-30 |
KR101460841B1 (ko) | 2014-11-11 |
CN102066015A (zh) | 2011-05-18 |
RU2011101722A (ru) | 2012-07-27 |
EP2303482A1 (fr) | 2011-04-06 |
US20110099783A1 (en) | 2011-05-05 |
US8479366B2 (en) | 2013-07-09 |
EP2303482B1 (fr) | 2014-08-06 |
KR20110025916A (ko) | 2011-03-14 |
CN102066015B (zh) | 2014-10-08 |
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