EP4076778B1 - Verfahren zum wechsel einer walzenkonfiguration in einem walzgerüst sowie walzenanordnung - Google Patents
Verfahren zum wechsel einer walzenkonfiguration in einem walzgerüst sowie walzenanordnung Download PDFInfo
- Publication number
- EP4076778B1 EP4076778B1 EP20821155.7A EP20821155A EP4076778B1 EP 4076778 B1 EP4076778 B1 EP 4076778B1 EP 20821155 A EP20821155 A EP 20821155A EP 4076778 B1 EP4076778 B1 EP 4076778B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- work
- rolls
- additional
- work roll
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000005096 rolling process Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
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
- B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
-
- 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
- B21B13/001—Convertible or tiltable stands, e.g. from duo to universal stands, from horizontal to vertical stands
-
- 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
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B2013/025—Quarto, four-high stands
-
- 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
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B2013/028—Sixto, six-high stands
Definitions
- the invention relates to a method for changing a roll configuration in a roll stand.
- the invention also relates to a roller arrangement as a replacement set for carrying out the method.
- Roll stands are used for hot rolling slabs into hot strips and for cold rolling cold strips.
- Various roll stands are used, which differ in terms of dimensioning, the number and arrangement of rolls, as well as in terms of the equipment with technical adjustment systems and in terms of roll cooling and roll lubrication.
- Stand types are usually differentiated according to the number and arrangement of the rolls. Probably the most frequently used type of stand is the so-called four-high mill (Quarto, 4-high-mill), which has two work rolls and two back-up rolls. Six-high mills (6-high mill) are often chosen for the cold rolling of high-strength steels with particularly high quality requirements. These include additional intermediate rolls and any associated support devices. Also common are 18-roll stands and 20-roll stands (multi-roll stands, for example 18-high-mill), which have work rolls with relatively small diameters. These come into consideration for the cold rolling of high-strength steels.
- a roll stand normally comprises a pair of work rolls with associated work roll chocks, blocks for guiding the work roll chocks with work roll bending and shifting, a pair of back-up rolls with associated back-up roll chocks, a screwdown and adjustment system for setting/adjusting the roll gap, i.e. the gap between upper and lower work roll, force gauges for measuring the rolling force, roll stand, drive systems, work roll cooling and lubrication as well as equipment for guiding the rolling stock.
- Multi-roll stands have corresponding work rolls with small diameters, but these are limited with regard to the permissible entry thickness of the rolling stock. Since such flat products usually make up only a relatively small part of the usual production of a rolling train, often only four-roll stands or six-roll stands are used, which are converted as required. The conversion is expensive.
- a typical roll stand in the form of a multi-roll stand for rolling a metal strip is, for example, from WO 2004/052568 known.
- a 4-high/6-high/18-HS roll stand is known, with which different operating modes and roll diameters can be rolled in one roll stand while minimizing changeover times. It is envisaged that the work roll sets of the 4-high/6-high stand will be replaced by intermediate roll sets including lateral support rollers and the work rolls of the 18-HS stand in cassette design. Such a conversion from a 4-high or a 6-high configuration to a multi-roll mill is relatively expensive. Despite the cassette design, which basically minimizes the changeover times, it is necessary to change over the drive trains, the bending and shifting systems and the like. When changing the roll configuration, the intermediate roll sets must first be installed, then the new work rolls with a smaller diameter must be installed.
- a method and an apparatus according to the preamble of claim 1 are from JPS55027473 A1 known. Further prior art is from U.S. 2,039,959A known.
- the object of the invention is to provide a method and a device for changing the roll configuration, which make it possible to convert a roll stand from work rolls with a large diameter to work rolls with a smaller diameter with the least possible changeover effort.
- a method for changing a roll configuration in a roll stand is preferably provided in a roll stand, in which at least one work roll of the roll stand is replaced by a roll arrangement as a replacement set, the replacement set comprising at least three replacement rolls stored in a common cassette are whose outer geometry corresponds at least partially to that of the chocks of the work roll to be exchanged.
- a cassette within the meaning of the invention is to be understood as a structural unit for the simultaneous storage of a plurality of drums or rolls.
- the cassette according to the invention comprises two bearing housings for the rollers of the replacement set and any required support rollers and/or support bearings.
- the outer geometry of the bearing housing largely or completely corresponds to that of the work roll chocks to be removed, so that the configuration change, such as a work roll change, can take place within a few minutes.
- a work roll chock is generally understood to be a bearing housing for a work roll that is compatible with a roll stand.
- the configuration change is preferably carried out on a 4-high or on a 6-high roll stand.
- the replacement of the work roll can be performed with a replacement kit that includes a work roll whose diameter is smaller than the diameter of the particular work roll to be replaced.
- the configuration change described above can also be carried out on a duo stand (2-high), so that this can then be converted into a multi-roll stand.
- all work rolls are preferably replaced, although it is also possible within the scope of the invention to replace only one work roll with a corresponding cassette.
- the sum of the roll diameters of all replacement rolls in a replacement set corresponds to the maximum or minimum diameter of the work roll to be replaced in each case.
- the replacement set expediently comprises at least one first and one second additional roll, the first additional roll preferably having a larger diameter than the working roll of the replacement set and preferably the second additional roll having a diameter corresponding to the working roll of the replacement set.
- the roll arrangement according to the invention expediently comprises a working roll and a first and a second additional roll which are arranged in a common cassette.
- the additional rolls take on the function of vertical backup rolls.
- a triple configuration within the meaning of the present invention comprises a work roll and two additional rolls, with any support rollers and/or support bearings that may be required for the lateral guidance of the work rolls and/or the additional rolls not being taken into account.
- such a triple configuration also includes lateral support rollers and/or support bearings.
- the cassette comprises two bearing housings for the work roll and the additional rolls, each of which has an external geometry that essentially corresponds to that of the work roll chocks of the roll stand.
- the work roll and the first and second additional rolls are arranged vertically one above the other in the installation position of the cassette.
- the second auxiliary roll and the work roll of the replacement set can have approximately the same diameter.
- the first backup roll has a larger diameter than the work roll of the replacement set.
- the first additional roll can be, for example, the driven roll of the replacement set.
- the replacement set may include support rolls and/or support bearings that laterally support the work roll and/or the first and second auxiliary rolls.
- the driven roller of the replacement kit is provided with a drive pin adapter.
- the drive trunnion adapter expands the diameter of the auger roll hit to fit into the existing drive spindle hit.
- the cassette is preferably embodied symmetrically or rotationally symmetrically about the longitudinal axis of the driven auxiliary roller with respect to a plane that is horizontal in the installed position. This makes it possible to install the cassette rotated 180° around the longitudinal axis, so that the position of the second additional roller of the replacement set and the working roller of the replacement set or the position of the first and second additional roller can be exchanged. This makes it possible to delay wear-related rework.
- an upper and a lower cassette can also be exchanged in a frame.
- the roll arrangement according to the invention can be used in an advantageous manner both for single stands and for rolling mills with multiple stands, both in one-way and in reversing operation. Both the method and the roll arrangement according to the invention are particularly suitable for retrofitting or upgrading existing rolling mills in addition to equipping new mills.
- a roll stand 1 is shown in a 4-high or 6-high configuration.
- the vertical backup rolls 2' of the 6-high configuration are indicated with dashed lines.
- the following explanations in relation to the invention apply to both possible configurations of the roll stand 1.
- the roll stand 1 comprises two vertical backup rolls 2 and between them two work rolls 3, which are each mounted in work roll chocks 4.
- the work rolls 3 are each replaced by a cassette 5 comprising a relatively smaller diameter work roll 3', a first auxiliary roll 6 and a second auxiliary roll 7.
- the Cassette 5 further comprises a first bearing housing 5A and a second bearing housing 5B which respectively accommodate the ends of the work roll 3' and the auxiliary rolls 6,7.
- the geometry of the bearing housing essentially corresponds to the geometry of the work roll chocks 4 in each case, so that the work roll 3 in question can be replaced with the associated work roll chocks 4 without further conversion or conversion measures.
- Both work rolls 3 according to the configuration Figure 1A are each replaced by a cassette 5. For the conversion of mill stand 1 from the configuration in Figure 1A into the configuration according to Figure 1B So the provision of a total of two cassettes 5 is required.
- the cassette 5 comprises a relatively small work roll 3', above which a driven first additional roll 6 arranged vertically in line with the work roll 3' and a second additional roll 7 arranged above in a line, the diameter of which is close to that of the work roll 3' corresponds.
- the working roll 3' and the second additional roll 7 preferably have the same diameter.
- Cassette 5 shown is rotationally symmetrical with respect to the longitudinal center axis of the driven first additional roller 6 .
- Each of the rollers arranged vertically in a line is supported laterally by support rollers 8, respectively.
- the diameter of a work roll 3 in a 6-high configuration can be, for example, about 470 to 430 mm, whereas the diameter of the work roll 3' of the replacement set can have a diameter of 140 to 120 mm, for example.
- the first additional roll 6 can, for example, have a diameter of 190 to 180 mm, whereas the diameter of the second additional roll 7 preferably corresponds to the diameter of the working roll 3' of the replacement set.
- the support rollers 8 can have a diameter of about 120 mm, for example.
- the rolling speed that can be achieved with the roller arrangement according to the invention can be in the range between about 100 to 2500 m/min, preferably between about 1000 to 1500 m/min.
- the first additional roller 6 is designed as a driven roller.
- a drive journal adapter 9 which expands the diameter of the roll hit 10 of the first additional roll 6 so that it fits into the roll-side hit of the drive spindle, not shown. This takes account of the fact that the drive journal of the work roll to be exchanged usually has a diameter which is matched to the drive torques to be transmitted.
- the intermediate rollers 2 are each driven.
- the work rolls 3 of the roll configuration to be converted are not driven. Consequently, it is not necessary to drive the replacement sets provided in the form of the cassettes 5 in a three-pack configuration.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Metal Rolling (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019220327.2A DE102019220327A1 (de) | 2019-12-20 | 2019-12-20 | Verfahren zum Wechsel einer Walzenkonfiguration in einem Walzgerüst sowie Walzenanordnung |
PCT/EP2020/084786 WO2021122074A1 (de) | 2019-12-20 | 2020-12-07 | Verfahren zum wechsel einer walzenkonfiguration in einem walzgerüst sowie walzenanordnung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP4076778A1 EP4076778A1 (de) | 2022-10-26 |
EP4076778C0 EP4076778C0 (de) | 2023-08-23 |
EP4076778B1 true EP4076778B1 (de) | 2023-08-23 |
Family
ID=73790072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20821155.7A Active EP4076778B1 (de) | 2019-12-20 | 2020-12-07 | Verfahren zum wechsel einer walzenkonfiguration in einem walzgerüst sowie walzenanordnung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4076778B1 (ja) |
JP (1) | JP7295340B2 (ja) |
CN (1) | CN114829030B (ja) |
DE (1) | DE102019220327A1 (ja) |
WO (1) | WO2021122074A1 (ja) |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2039959A (en) * | 1933-12-28 | 1936-05-05 | Mesta Machine Co | Rolling mill |
CH434688A (de) * | 1964-07-09 | 1967-04-30 | Schuetz Udo Kg | Blechtafel für Tanks |
DE1961110A1 (de) * | 1969-12-05 | 1971-06-24 | Demag Ag | Walzwerk mit einem mehrteiligen Walzenstaender |
US3718016A (en) * | 1971-10-26 | 1973-02-27 | Moog Inc | Screwdown control system for rolling mills |
JPS5228504B2 (ja) | 1974-03-14 | 1977-07-27 | ||
JPS5527473A (en) * | 1978-08-18 | 1980-02-27 | Ishikawajima Harima Heavy Ind Co Ltd | Multipurpose rolling mill |
JPS61222606A (ja) * | 1985-03-27 | 1986-10-03 | Ishikawajima Harima Heavy Ind Co Ltd | 圧延方法及びその装置 |
JPH0763736B2 (ja) * | 1985-07-18 | 1995-07-12 | エスエムエス シユレ−マン・ジ−マグ アクチエン ゲゼルシヤフト | ロ−ル胴が湾曲している複数個のロ−ルを備えた圧延機 |
CN87206186U (zh) * | 1987-04-05 | 1988-05-04 | 贵州省建筑材料科研设计院 | 可换齿带刮板齿辊机 |
JPH01154803A (ja) * | 1987-12-10 | 1989-06-16 | Ishikawajima Harima Heavy Ind Co Ltd | 多段圧延機 |
JP3416251B2 (ja) * | 1994-03-18 | 2003-06-16 | 株式会社神戸製鋼所 | 多段圧延機のロール組替方法及びこれに用いるロール組替装置並びに多段圧延機 |
JP3275986B2 (ja) * | 1994-10-07 | 2002-04-22 | 石川島播磨重工業株式会社 | 圧延機 |
JPH10175002A (ja) * | 1996-12-18 | 1998-06-30 | Ishikawajima Harima Heavy Ind Co Ltd | 段数切替え多段圧延機 |
DE19855652C1 (de) * | 1998-12-03 | 2000-03-23 | Sket Walzwerkstechnik Gmbh | Verfahren und Einrichtung zum Auswechseln der Walzen von Walzgerüsten unterschiedlicher Baugröße |
US7448244B2 (en) | 2002-08-27 | 2008-11-11 | Jfe Steel Corporation | Process for producing hot-rolled steel strip and apparatus therefor |
JP4052916B2 (ja) * | 2002-09-27 | 2008-02-27 | 新日本製鐵株式会社 | ユニバーサル圧延機 |
JP2004136328A (ja) | 2002-10-17 | 2004-05-13 | Kobe Steel Ltd | 多段圧延機 |
ES1061641Y (es) | 2002-10-31 | 2006-07-01 | Mattel Inc | Vehiculo de juguete. |
FR2846579B1 (fr) | 2002-11-05 | 2006-05-05 | Vai Clecim | Procede pour elargir la gamme de production d'une installation de laminage de produits metalliques et installation pour la mise en oeuvre du procede |
DE10257971A1 (de) | 2002-12-12 | 2004-06-24 | Sms Demag Ag | Mehrwalzengerüst zum Walzen eines Metallbandes |
FR2851942B1 (fr) * | 2003-03-05 | 2006-04-28 | Procede de changement de configuration d'un laminoir et laminoir perfectionne pour la mise en oeuvre du procede | |
CN2818000Y (zh) * | 2005-07-14 | 2006-09-20 | 朱惠兴 | 可轴向移动轧辊的六辊式轧机 |
CN201244583Y (zh) * | 2008-08-13 | 2009-05-27 | 中国第一重型机械集团公司 | 换辊传动装置 |
CN101676042B (zh) * | 2008-09-16 | 2011-08-10 | 王宇 | 12/20辊辊系互换式轧钢机及其互换方法 |
DE102009060640A1 (de) * | 2009-07-07 | 2011-01-13 | Sms Siemag Ag | Clusterarmanordnung für die Zwischenwalzensätze von 18 HS Walzgerüsten |
CN101733287B (zh) * | 2009-12-17 | 2012-04-25 | 北京京诚之星科技开发有限公司 | 轧机工作辊水平偏移量调节定位装置 |
CN102247996B (zh) * | 2011-06-10 | 2013-11-13 | 上海东新冶金技术工程有限公司 | 一种用于刮刀装置的快装结构 |
CN204051768U (zh) * | 2014-09-05 | 2014-12-31 | 长兴华强电子有限公司 | 一种三辊碾磨机的倒料提升装置 |
CN105964691B (zh) * | 2016-03-31 | 2017-12-15 | 中国重型机械研究院股份公司 | 一种新型十辊钢板冷轧机结构 |
CN106734221B (zh) * | 2016-11-24 | 2018-05-22 | 中国重型机械研究院股份公司 | 一种用于冷连轧的工作辊辊系可换的十八辊轧机 |
-
2019
- 2019-12-20 DE DE102019220327.2A patent/DE102019220327A1/de active Pending
-
2020
- 2020-12-07 CN CN202080088535.2A patent/CN114829030B/zh active Active
- 2020-12-07 EP EP20821155.7A patent/EP4076778B1/de active Active
- 2020-12-07 JP JP2022537476A patent/JP7295340B2/ja active Active
- 2020-12-07 WO PCT/EP2020/084786 patent/WO2021122074A1/de active Search and Examination
Also Published As
Publication number | Publication date |
---|---|
CN114829030B (zh) | 2024-01-30 |
EP4076778C0 (de) | 2023-08-23 |
CN114829030A (zh) | 2022-07-29 |
WO2021122074A1 (de) | 2021-06-24 |
JP7295340B2 (ja) | 2023-06-20 |
JP2023508899A (ja) | 2023-03-06 |
EP4076778A1 (de) | 2022-10-26 |
DE102019220327A1 (de) | 2021-06-24 |
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