EP4076778A1 - Method for changing a roll configuration in a roll stand and roll arrangement - Google Patents
Method for changing a roll configuration in a roll stand and roll arrangementInfo
- Publication number
- EP4076778A1 EP4076778A1 EP20821155.7A EP20821155A EP4076778A1 EP 4076778 A1 EP4076778 A1 EP 4076778A1 EP 20821155 A EP20821155 A EP 20821155A EP 4076778 A1 EP4076778 A1 EP 4076778A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- work
- additional
- exchange
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 claims 1
- 238000005096 rolling process Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
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 an exchange set for carrying out the method.
- Roll stands are used for hot rolling slabs into hot strips and for cold rolling cold strips. Different roll stands are used, which differ in terms of dimensioning, number of rolls and roll arrangement as well as with regard to the equipment with technical control systems as well as with regard to roll cooling and roll lubrication.
- four-roll stands Quarto, 4-high-mill
- Six-high mill stands (Sexto, 6-high-mill) are often chosen for the cold rolling of high-strength steels with particularly high quality requirements. These include additional intermediate rollers and possibly associated support devices.
- 18-roll stands and 20-roll stands multi-roll stands, for example 18-high-mill), which have work rolls with relatively small diameters, are also common. These come into consideration for the cold rolling of high-strength steels.
- a roll stand usually 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, an adjustment and adjustment system for setting / adjusting the roll gap, ie the gap between the upper and lower work roll, force measuring devices for roll force measurement, roll stands, drive systems, work roll cooling and cooling Devices for guiding the rolling stock.
- Multi-roll stands have corresponding work rolls with small diameters, but these are limited with regard to the permissible input thickness of the rolled stock. Since such flat products usually only make up 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 if necessary. The conversion is complex.
- a 4-high / 6-high / 18-HS roll stand is known from EP 2451 592 B1, with which different operating modes and roll diameters can be rolled in one roll stand while minimizing the changeover times. It is provided that the work roll sets of the 4-high / 6-high stand are exchanged for 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 6-high configuration to a multi-roll stand is relatively expensive. Despite the cassette design, which basically minimizes the changeover times, it is necessary to convert the drive trains, the bending and displacement systems and the like. When changing the roller configuration, the intermediate roller sets must first be introduced then the new work rolls with a smaller diameter have to be introduced.
- rollers of an exchange set and additionally any necessary support rollers and / or support bearings are stored together in a single cassette.
- the configuration change is preferably carried out on a 4-high or on a 6-high roll stand.
- the exchange of the work roll can be carried out with an exchange kit which comprises a work roll, the diameter of which is smaller than the diameter of the respective work roll to be exchanged.
- the configuration change described above can also be carried out on a two-high stand (2-high) so that this can then be converted into a multi-roll stand.
- all work rolls are preferably exchanged, although within the scope of the invention it can also be provided that only one work roll is exchanged for a corresponding cassette.
- the exchange set expediently comprises at least a first and a second additional roll, the first additional roll preferably having a larger diameter than the work roll of the exchange set and preferably the second additional roll having a diameter corresponding to the work roll of the exchange set.
- the roller arrangement according to the invention expediently comprises a work roller and a first and a second additional roller, which are arranged in a common cassette.
- the additional rollers take on the function of vertical backup rollers.
- a three-way configuration within the meaning of the present invention comprises a work roll and two additional rolls, with any necessary support rollers and / or support bearings for the lateral guidance of the work rolls and / or the additional rolls not being taken into account.
- such a three-way 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 outer geometry that essentially corresponds to that of the work roll chocks of the roll stand.
- the work roll and the first and second additional roll are arranged vertically one above the other in the installed position of the cassette.
- the second additional roll and the work roll of the replacement set can have approximately the same diameter.
- the first additional roll has a larger diameter than the work roll of the exchange set.
- the first additional roller can be, for example, the driven roller of the replacement kit.
- the replacement set can include support rollers and / or support bearings which laterally support the work roll and / or the first and the second additional roll.
- the driven roller of the exchange kit is expediently provided with a drive pin adapter.
- the drive journal adapter expands the diameter of the roll hit of the additional roll in such a way that it fits into the hit of the existing drive spindle.
- the cassette is preferably designed symmetrically or rotationally symmetrically around the longitudinal axis of the driven additional 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 if necessary, so that, for example, the position of the second additional roller of the exchange set and the working roller of the exchange set or the position of the first and second additional roller can be swapped. This makes it possible to delay reworking due to wear.
- an upper and a lower cassette can also be exchanged in a frame.
- the roll arrangement according to the invention can be used advantageously both for single stands and for rolling plants with several stands, both in one-way and in reversing operation.
- Both the method and the roller arrangement according to the invention are not only suitable for equipping new plants in a special way, but also for retrofitting or upgrading existing rolling plants.
- Figure 1 A is a schematic representation of a 4-high or 6-high roller configuration to be converted according to the prior art
- Figure 1 B is a schematic representation of the roller configuration shown in Figure 1 A, in which the work rolls were replaced by an exchange set according to the invention
- Figure 2A is a schematic representation corresponding to Figure 1A, in which the drive of the work roll is shown schematically,
- FIG. 2 B a representation corresponding to FIG. 1 B, in which the drive of the exchange set or the cassette is shown schematically
- FIG. 3 A a schematic representation of a 4-high or 6-high roller configuration to be converted according to the prior art, in which the backup rollers or intermediate rollers are driven,
- FIG. 3 B shows a schematic representation of the roll configuration shown in FIG. 3 A, in which the work rolls of the arrangement according to FIG. 3 A have been replaced by an exchange set or a cassette according to the invention
- FIG. 4 shows a schematic representation of an upper exchange set or the cassette according to the invention, including optional support rollers,
- FIG. 5 shows a sectional view along the line VV in FIG. 4
- FIG. 6 shows a sectional view along the line VI-VI in FIG.
- FIGS. 1A and 1B A roll stand 1 is shown there in a 4-high or 6-high configuration.
- the vertical support rollers 2 'of the 6-high configuration are indicated with dashed lines.
- the following explanations with regard to the invention apply to both possible configurations of the roll stand 1.
- the roll stand 1 comprises two vertical backup rolls 2 and two work rolls 3 between them, each of which is mounted in work roll chocks 4.
- the work rolls 3 are each replaced by a cassette 5 comprising a work roll 3 'with a relatively smaller diameter, a first additional roll 6 and a second additional roll 7.
- the cassette 5 further comprises a first bearing housing 5A and a second bearing housing 5B which each receive the ends of the work roll 3 'and the additional rolls 6, 7.
- the geometry of the bearing housing essentially corresponds in each case to the geometry of the work roll chocks 4, so that the work roll 3 in question with the associated work roll chocks 4 can be exchanged without further conversion or conversion measures.
- Both work rolls 3 of the configuration according to FIG. 1A are each replaced by a cassette 5.
- a total of two cassettes 5 must be provided.
- the diameter of a work roll 3 in a 6-high configuration can be, for example, approximately 470 to 430 mm, whereas the diameter of the work roll 3 of the exchange 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 work roll 3 ‘of the replacement set.
- the support rollers 8 can, for example, have a diameter of approximately 120 mm.
- 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. To do this, this is like this 6 can be seen, provided at one end with a drive pin 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, not shown, of the drive spindle. This takes into account 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 exchange sets provided as a three-way configuration in the form of the cassettes 5.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019220327.2A DE102019220327A1 (en) | 2019-12-20 | 2019-12-20 | Method for changing a roll configuration in a roll stand and roll arrangement |
PCT/EP2020/084786 WO2021122074A1 (en) | 2019-12-20 | 2020-12-07 | Method for changing a roll configuration in a roll stand and roll arrangement |
Publications (3)
Publication Number | Publication Date |
---|---|
EP4076778A1 true EP4076778A1 (en) | 2022-10-26 |
EP4076778B1 EP4076778B1 (en) | 2023-08-23 |
EP4076778C0 EP4076778C0 (en) | 2023-08-23 |
Family
ID=73790072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20821155.7A Active EP4076778B1 (en) | 2019-12-20 | 2020-12-07 | Method for changing a roll configuration in a roll stand and roll arrangement |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4076778B1 (en) |
JP (1) | JP7295340B2 (en) |
CN (1) | CN114829030B (en) |
DE (1) | DE102019220327A1 (en) |
WO (1) | WO2021122074A1 (en) |
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 (en) * | 1964-07-09 | 1967-04-30 | Schuetz Udo Kg | Metal sheet for tanks |
DE1961110A1 (en) * | 1969-12-05 | 1971-06-24 | Demag Ag | Pre-stressed rolling mill allows rapid - roll changing |
US3718016A (en) * | 1971-10-26 | 1973-02-27 | Moog Inc | Screwdown control system for rolling mills |
JPS5228504B2 (en) | 1974-03-14 | 1977-07-27 | ||
JPS5527473A (en) * | 1978-08-18 | 1980-02-27 | Ishikawajima Harima Heavy Ind Co Ltd | Multipurpose rolling mill |
JPS61222606A (en) * | 1985-03-27 | 1986-10-03 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for rolling |
JPH0763736B2 (en) * | 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 | Rolling machine with a plurality of rolls with curved rolling cylinders |
CN87206186U (en) * | 1987-04-05 | 1988-05-04 | 贵州省建筑材料科研设计院 | Gear-roll machine with changable gear band and scraper |
JPH01154803A (en) * | 1987-12-10 | 1989-06-16 | Ishikawajima Harima Heavy Ind Co Ltd | Multiroll mill |
JP3416251B2 (en) * | 1994-03-18 | 2003-06-16 | 株式会社神戸製鋼所 | Method of changing rolls of multi-high rolling mill, roll changing apparatus used for the same, and multi-high rolling mill |
JP3275986B2 (en) * | 1994-10-07 | 2002-04-22 | 石川島播磨重工業株式会社 | Rolling mill |
JPH10175002A (en) * | 1996-12-18 | 1998-06-30 | Ishikawajima Harima Heavy Ind Co Ltd | Roll change multi roll mill |
DE19855652C1 (en) * | 1998-12-03 | 2000-03-23 | Sket Walzwerkstechnik Gmbh | Changing of rolls in roll stands of different sizes involves pivoting roll mounting into a horizontal position, changing the rolls, and transporting the roll mounting in vertical orientation back to roll stand |
EP1541251B1 (en) | 2002-08-27 | 2012-12-05 | JFE Steel Corporation | Process for producing hot-rolled steel strip and apparatus therefor |
JP4052916B2 (en) * | 2002-09-27 | 2008-02-27 | 新日本製鐵株式会社 | Universal rolling mill |
JP2004136328A (en) | 2002-10-17 | 2004-05-13 | Kobe Steel Ltd | Multiple rolling mill |
IL160491A0 (en) | 2002-10-31 | 2004-07-25 | Mattel Inc | Toy vehicle |
FR2846579B1 (en) * | 2002-11-05 | 2006-05-05 | Vai Clecim | METHOD FOR EXTENDING THE RANGE OF PRODUCTION OF A PLANT ROLLING PLANT FOR METAL PRODUCTS AND INSTALLATION FOR CARRYING OUT THE METHOD |
DE10257971A1 (en) | 2002-12-12 | 2004-06-24 | Sms Demag Ag | Sheet metal strip cold rolling mill has contact rollers which may be displaced left or right in accordance with the metal strip running direction |
FR2851942B1 (en) * | 2003-03-05 | 2006-04-28 | METHOD FOR CHANGING THE CONFIGURATION OF A ROLLING MILL AND IMPROVED ROLLING MILL FOR IMPLEMENTING THE METHOD | |
CN2818000Y (en) * | 2005-07-14 | 2006-09-20 | 朱惠兴 | Six-roller rolling mill with roller movable axially |
CN201244583Y (en) * | 2008-08-13 | 2009-05-27 | 中国第一重型机械集团公司 | Roll-changing transmission mechanism |
CN101676042B (en) * | 2008-09-16 | 2011-08-10 | 王宇 | 12-roll and 20-roll rolling mills comprising replaceable roll systems and replacing method thereof |
DE102009060642A1 (en) | 2009-07-07 | 2011-01-13 | Sms Siemag Ag | 4-roll - / - rolls / 18HS roll rolling mill in cassette construction |
CN101733287B (en) * | 2009-12-17 | 2012-04-25 | 北京京诚之星科技开发有限公司 | Device for adjusting and positioning horizontal offset for working rollers of rolling mill |
CN102247996B (en) * | 2011-06-10 | 2013-11-13 | 上海东新冶金技术工程有限公司 | Rapid assembly structure for scraper device |
CN204051768U (en) * | 2014-09-05 | 2014-12-31 | 长兴华强电子有限公司 | A kind of batch turning lifting device of three roller grinding mills |
CN105964691B (en) * | 2016-03-31 | 2017-12-15 | 中国重型机械研究院股份公司 | A kind of new ten roll steel plates cold-rolling mill structure |
CN106734221B (en) * | 2016-11-24 | 2018-05-22 | 中国重型机械研究院股份公司 | A kind of eighteen-high mill interchangeable for the working roll roller system of cold continuous rolling |
-
2019
- 2019-12-20 DE DE102019220327.2A patent/DE102019220327A1/en active Pending
-
2020
- 2020-12-07 CN CN202080088535.2A patent/CN114829030B/en active Active
- 2020-12-07 JP JP2022537476A patent/JP7295340B2/en active Active
- 2020-12-07 WO PCT/EP2020/084786 patent/WO2021122074A1/en active Search and Examination
- 2020-12-07 EP EP20821155.7A patent/EP4076778B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102019220327A1 (en) | 2021-06-24 |
EP4076778B1 (en) | 2023-08-23 |
JP2023508899A (en) | 2023-03-06 |
CN114829030B (en) | 2024-01-30 |
EP4076778C0 (en) | 2023-08-23 |
CN114829030A (en) | 2022-07-29 |
JP7295340B2 (en) | 2023-06-20 |
WO2021122074A1 (en) | 2021-06-24 |
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