EP4117834B1 - Walzgerüst zum walzen von metallband - Google Patents

Walzgerüst zum walzen von metallband Download PDF

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Publication number
EP4117834B1
EP4117834B1 EP21702984.2A EP21702984A EP4117834B1 EP 4117834 B1 EP4117834 B1 EP 4117834B1 EP 21702984 A EP21702984 A EP 21702984A EP 4117834 B1 EP4117834 B1 EP 4117834B1
Authority
EP
European Patent Office
Prior art keywords
roll
stand
work roll
additional
backing
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
Application number
EP21702984.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4117834A1 (de
Inventor
Hartmut Pawelski
Thorsten Bode
Markus SCHELLMANN
Matthias VOGD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP4117834A1 publication Critical patent/EP4117834A1/de
Application granted granted Critical
Publication of EP4117834B1 publication Critical patent/EP4117834B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/145—Lateral support devices for rolls acting mainly in a direction parallel to the movement of the product
    • 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
    • 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
    • B21B13/04—Three-high arrangement
    • 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
    • B21B2013/026—Quinto, five high-stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/02—Roll dimensions
    • B21B2267/06—Roll diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/02—Roll dimensions
    • B21B2267/06—Roll diameter
    • B21B2267/065—Top and bottom roll have different diameters; Asymmetrical rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/06—Drives for metal-rolling mills, e.g. hydraulic drives for non-continuously-operating mills or for single stands

Definitions

  • the present invention relates to a roll stand for rolling metal strip and a rolling train with a plurality of roll stands according to the invention arranged one behind the other in the material flow direction.
  • a generic rolling stand is out JP S60 176801 U known.
  • the invention relates in particular to rolling stands with an odd number of rolls, more particularly with three, five or seven rolls.
  • the upper or lower conventional work roll is replaced by a small work roll and an additional roll, either on the top or on the underside of the metal strip to be rolled.
  • Such roll stands are basically known in the prior art.
  • JP 2010075985 a roll stand with five rolls, the upper work roll being particularly small, in particular smaller than the lower work roll.
  • Providing the work roll with a smaller diameter offers the advantage that high-strength steels with high forming resistance can be rolled more easily because the required rolling forces can be reduced due to the smaller work roll diameter.
  • Japanese patent application JP 61245904 A discloses a roll stand with five rolls arranged one above the other, the upper work roll having a smaller diameter than the lower work roll.
  • the Japanese patent application recommends this stand structure specifically for asymmetrical rolling of clad steel plates.
  • the clad steel plates have a different forming resistance on their top and bottom sides and it is therefore recommended to roll such steel plates with different circumferential speeds of the work rolls, as shown by the Work rolls with different diameters are realized at the same drive speed.
  • a second upper work roll has the same diameter as a conventional work roll, that is, the first and second work rolls taken together, when stacked one above the other, have a greater height than a single conventional work roll.
  • the work roll with the smaller diameter is used on the side of the clad material to be rolled which has a larger forming resistance; Conversely, the work roll with the larger diameter attaches to the side of the clad material, which has a lower forming resistance.
  • the smaller diameter work roll is pivotally mounted relative to the conventional larger diameter work roll; In particular, the smaller work roll can be pivoted away from the vertical line of force. This means that, depending on requirements, it can either be provided in the vertical power transmission direction or can be pivoted away; In the latter case, the roll stand can be operated as a normal four-high stand, in which the two opposite work rolls each have the same diameter. In this respect, this is what the Japanese patent application offers JP 61245904 A revealed rolling stand expanded rolling possibilities.
  • a change between the two roll constellations described not only requires the work roll with the smaller diameter to be swiveled in or away, but also a vertical movement of the two rolls arranged above the small work roll within the roll stand.
  • the invention is based on the object of developing a known roll stand with an odd number of rolls arranged one above the other in such a way that lateral bending of the small work roll is effectively prevented.
  • the roll stand according to the invention has a support device for the small work roll that acts at least on one side in the horizontal direction and an adjusting device for horizontally adjusting the support device against the small work roll.
  • the support device preferably supports the small work roll not only on one side, but on both sides.
  • the support device By providing the support device, lateral bending of the small work roll is effectively prevented and thus the overall rigidity of the roll stand with the odd number of rolls is increased. Due to the stability of the additional roll, which is arranged between the small work roll and the second support roll or the second intermediate roll, the required performance of the support device for stabilizing the entire roll stand is lower compared to the work roll stabilization in a conventional roll stand with four or six one above the other arranged rollers, in which the two work rollers each have the same diameter.
  • work roll means a roll that is in direct contact with the rolling stock and carries out the forming work.
  • the work roll referred to in the present application as a large work roll corresponds to a regular work roll typically used in practical use.
  • adjusting device means not only a preferably hydraulically operating device for variably adjusting the support device, in particular its support shells, against the small work roll, but also expressly a static, i.e. H. non-variable holding device for stationary positioning of the support device on the small work roll.
  • the size ratios mean that the small work roll has a smaller diameter than the additional roll and the additional roll has a smaller diameter than the large work roll.
  • the roll stand according to the invention can alternatively be designed with or without backup rolls and/or intermediate rolls.
  • a first support roll is provided for supporting the large work roll and a second support roll for supporting the additional roll, both support rolls having a larger diameter than the large work roll.
  • the two support rollers have an identical diameter.
  • a first intermediate roll arranged between the large work roll and the first support roll and a second intermediate roll arranged between the additional roll and the second support roll are provided, the first intermediate roll having a larger diameter than the large work roll and a smaller diameter than the first support roll and the second intermediate roller has a larger diameter than the additional roller and a smaller diameter than the second backup roller.
  • the two intermediate rollers have an identical diameter.
  • the roll stand has only one drive device for rotating the large work roll.
  • the drive device can also drive the additional roller. If the large work roll and the additional roll are driven simultaneously, it must be ensured that the drive device drives the two rolls with the same directions of rotation and, if necessary, with an adjusted speed.
  • the roll stand has a drive device for rotationally driving the first support roll and/or the second support roll. If the first and second support rollers are driven simultaneously, it must be ensured that the drive device drives the two rollers with the same directions of rotation.
  • the roll stand has a drive device for rotationally driving the first intermediate roller and/or the second intermediate roller. If the first and second intermediate rollers are driven simultaneously, it must be ensured that the drive device drives the two rollers with the same directions of rotation.
  • this has the advantage that with the odd number of rolls in the roll stand according to the invention, it is ensured that the two work rolls, which together span the roll gap, work together and not against each other.
  • the small work roll and the additional roll are arranged together and rotatably mounted in an exchange insert.
  • the support device has at least one support shell for pressing against the small work roll at least on one side, preferably on both sides.
  • a pump device is provided for pumping a fluid into an intermediate space between the at least one support shell and the small work roll.
  • the support device is advantageously located within the said replacement insert. This saves space and, in particular, makes sense because, according to the invention, the support device is only intended for the small work roll.
  • the fluid pumped into the gap which is preferably in the form of a cooling lubricant, serves as a hydrostatic cushion and also for effective cooling of the small work roll.
  • the size of the gap but also the stability of the horizontal support, can be changed by adjusting the pressure value of the fluid and/or its volume flow.
  • the setting and regulation of pressure and/or volume flow is intended to set optimal horizontal support.
  • the external geometric dimensions in particular the total height of the replacement insert with the small work roll and the additional roll, at least partially correspond to the external geometric dimensions, in particular the diameter of the opposite large work roll, or the diameter of a traditional duo, quarto, or sexto framework largely corresponds.
  • the invention can be implemented particularly easily in the context of modernizations. For new systems, deviations of up to 30%, preferably up to 20%, are permitted compared to the large work roll.
  • the present invention can also be used to expand the rolling options in single stands or tandem lines, in one-way or Reversing operation.
  • effects on the structure due to the asymmetrical roll gap conditions must be taken into account.
  • the effective effects on the structure of the metal strip to be rolled in the so-called drag drive result from the displacement of the flow blade position between the driven and non-driven work roll.
  • the adjustment of the horizontal offset of the small work roll via a displacement/movement of the support shells as well as the offset of the entire insert or other rolls is set or regulated using a process model and/or taking into account necessary parameters, in particular measured strip tensions, rolling forces and/or moments.
  • the rolling stands according to the invention enable a higher rolling speed than the conventional rolling stands, in particular also known multi-roll stands; For example, rolling speeds of more than 800 m/min are possible.
  • rolling speeds of more than 800 m/min are possible.
  • the rolling stands according to the invention are used in particular for cold rolling high-strength thin metal strips.
  • the horizontal offsets of the small work roll and the additional roll of the replacement insert are adjusted with the help of the pressing device so that the lateral forces on the support shells are set to a minimum or in a range that makes sense for the load.
  • the measured motor currents can be used to calculate the horizontal forces. This is not completely possible with comb roller drives due to unknown torque distortions.
  • the cooling lubricant emerging from the support shell only reaches the belt to a small extent.
  • conventional cooling lubricant systems or belt blow-off systems can still be used as is known.
  • a reduction in roll gap friction can be achieved for the small, non-driven work roll by additional application of cooling lubricant, application of concentrate/additive or cooling lubricant with enriched concentrate/additive content.
  • the replacement insert can be integrated as a whole into a bending or axial/horizontal displacement system.
  • Figure 1 shows in its right half an embodiment variant for the roll stand 100 according to the invention for rolling metal strip 200.
  • the roll stand has a small work roll 110 and an additional roll 111 which is operatively connected to it, as well as a large work roll 120.
  • the small work roll 110 and the large work roll 120 create a rolling gap for rolling the metal strip 200.
  • the additional roll 111 has a larger diameter than the small work roll 110, but a smaller diameter than the large work roll 120 arranged opposite the small roll 110.
  • the sum of the diameters of the small work roll 110 and the additional roll 111 - when arranged vertically one above the other - largely corresponds to the diameter of the large work roll 120.
  • a conventional work roll 140 is shown with its chock or bearing housing 141.
  • the external geometric dimensions, in particular the overall height of the replacement insert 130 with the two rollers 110, 111 correspond to the external geometric dimensions, in particular the diameter of the opposite one Work roll 120 and the conventional work roll 140 match. This makes a simple replacement very quick and easy.
  • the small work roll 110 is supported against horizontal or lateral bending, preferably on both sides in the horizontal direction, with the aid of a horizontal support device 150.
  • the support device 150 is positioned against the small work roll 110 with the aid of, for example, a hydraulically operating adjusting device 160.
  • a pump device 170 is provided for pumping fluid or cooling lubricant into the gap 175 between the support shell 155 and the small work roll 110. This is preferably done as in Figure 1 is shown, on both sides of the small work roll 110.
  • Figure 2 shows in partial images a) to i) various exemplary embodiments of the rolling stand 100 according to the invention, in which the small work roll 110 supported by the additional roll 111 is arranged above the metal strip 200 to be rolled.
  • the exemplary embodiment a) corresponds to that previously referred to Figure 1 described first embodiment. What is characteristic of this exemplary embodiment is that only the large work roll 120 arranged below the metal strip 200 is driven in rotation in accordance with the direction of rotation of the arrow. All other rolls of the roll stand 100 and in particular the small work roll 110 are not rotationally driven.
  • both those below the metal strip 200 arranged large work roll 120 as well as the additional roll 111 are rotationally driven in accordance with the direction of rotation of the arrow.
  • the exemplary embodiments according to Figure 2c) to 2e each relate to a roll stand with 5 rolls.
  • these additionally include a first support roll 180 and a second support roll 185.
  • the first support roll 180 is in operative connection with the large work roll 120 and has a larger diameter than it.
  • the second support roller 185 is in operative connection with the additional roller 111 and has a larger diameter than it.
  • the drive concept of exemplary embodiments 2c) and 2d) corresponds to that of exemplary embodiments 2a) and 2b).
  • only the first support roller 180, or only the second support roller 185, or both the first and second support rollers 180, 185 can be rotationally driven simultaneously, according to the direction of rotation of the arrow.
  • the exemplary embodiments according to Figure 2f) to 2i ) each relate to a roll stand with 7 rolls.
  • the first intermediate roll 190 is arranged between the first support roll 180 and the large work roll 120 and points one towards the large work roll 120 larger diameter and one smaller than the first support roller 180 diameter.
  • the second intermediate roller 195 is arranged between the second support roller 185 and the additional roller 111 and has a larger diameter than the additional roller 111 and a smaller diameter than the second support roller 185.
  • the drive concept of exemplary embodiments 2f) and 2g) corresponds to that of exemplary embodiments 2a) to 2d).
  • only the first support roller 180 or alternatively only the first intermediate roller 190, or only the second support roller 185 or alternatively only the second intermediate roller 195, or both the first and the second support rollers 180, 185 or alternatively the first and second intermediate rollers 190, 195 are rotationally driven simultaneously, according to the direction of rotation of the arrow.
  • Figure 3 shows in the partial images a) to i) various exemplary embodiments of the rolling stand 100 according to the invention, in which the small work roll 110 supported by the additional roll 111 is arranged below the metal strip 200 to be rolled.
  • Figure 2 Statements made about the exemplary embodiments shown there for the exemplary embodiments according to Figure 3 equally or analogously.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP21702984.2A 2020-03-11 2021-02-01 Walzgerüst zum walzen von metallband Active EP4117834B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020203076.6A DE102020203076A1 (de) 2020-03-11 2020-03-11 Walzgerüst zum Walzen von Metallband
PCT/EP2021/052254 WO2021180395A1 (de) 2020-03-11 2021-02-01 Walzgerüst zum walzen von metallband

Publications (2)

Publication Number Publication Date
EP4117834A1 EP4117834A1 (de) 2023-01-18
EP4117834B1 true EP4117834B1 (de) 2023-11-01

Family

ID=74505254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21702984.2A Active EP4117834B1 (de) 2020-03-11 2021-02-01 Walzgerüst zum walzen von metallband

Country Status (5)

Country Link
EP (1) EP4117834B1 (ja)
JP (1) JP7470201B2 (ja)
CN (1) CN115279506A (ja)
DE (1) DE102020203076A1 (ja)
WO (1) WO2021180395A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021205156A1 (de) 2021-05-20 2022-11-24 Sms Group Gmbh Kassette für zumindest eine Arbeitswalze in einem Walzgerüst

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139872A (en) * 1933-08-07 1938-12-13 Worthington Warren Sheet metal and procedure for producing the same
JPS52139653A (en) * 1976-05-18 1977-11-21 Ishikawajima Harima Heavy Ind Rolling device
CH617603A5 (ja) * 1976-10-21 1980-06-13 Escher Wyss Ag
JPS56111513A (en) * 1980-02-06 1981-09-03 Ishikawajima Harima Heavy Ind Co Ltd Rolling mill
JPS6036321B2 (ja) * 1980-07-21 1985-08-20 住友金属工業株式会社 圧延機
SE8300169L (sv) 1983-01-14 1984-07-15 Strandell Per Olof Anordning vid valsverk
JPS59137103A (ja) * 1983-01-27 1984-08-07 Furukawa Electric Co Ltd:The 圧延方法
JPH0688046B2 (ja) * 1983-02-17 1994-11-09 新日本製鐵株式会社 圧延機
JPS60141305A (ja) * 1983-12-29 1985-07-26 Ishikawajima Harima Heavy Ind Co Ltd 連続圧延設備
JPS60141306A (ja) * 1983-12-29 1985-07-26 Ishikawajima Harima Heavy Ind Co Ltd 連続圧延設備
JPS60176801U (ja) * 1984-04-27 1985-11-22 石川島播磨重工業株式会社 圧延機
JPS61182806A (ja) * 1985-02-07 1986-08-15 Ishikawajima Harima Heavy Ind Co Ltd 圧延装置
JPS61182809A (ja) * 1985-02-07 1986-08-15 Ishikawajima Harima Heavy Ind Co Ltd 圧延機
JPS61245904A (ja) 1985-04-25 1986-11-01 Kawasaki Steel Corp クラツド鋼板の圧延方法
JPS6238706A (ja) * 1985-08-12 1987-02-19 Ishikawajima Harima Heavy Ind Co Ltd 圧延装置
JPS6240905A (ja) * 1985-08-20 1987-02-21 Kawasaki Steel Corp ロ−ル列組換え式圧延機による鋼板の圧延方法
JPS63184601U (ja) * 1987-05-20 1988-11-28
JPH0813366B2 (ja) * 1988-04-14 1996-02-14 株式会社日立製作所 圧延機
JPH0796121B2 (ja) * 1988-10-31 1995-10-18 株式会社日立製作所 ４段５段切換可能圧延機
JPH04408U (ja) * 1990-04-13 1992-01-06
JPH08174004A (ja) * 1994-12-27 1996-07-09 Nippon Steel Corp 板圧延機の圧延方法
JPH10277619A (ja) * 1997-02-05 1998-10-20 Nkk Corp 熱間圧延装置及び方法
ITMI20060666A1 (it) * 2006-04-05 2007-10-06 Danieli Off Mecc Impianto di laminazione
JP5239694B2 (ja) 2008-09-29 2013-07-17 Ｊｆｅスチール株式会社 冷間圧延機列、冷間圧延ライン、金属板の冷間圧延方法、ならびに、冷延金属板の製造方法
CN104550239B (zh) * 2014-12-29 2016-11-23 一重集团大连设计研究院有限公司 一种十八辊冷轧机

Also Published As

Publication number Publication date
DE102020203076A1 (de) 2021-09-16
JP2023517223A (ja) 2023-04-24
WO2021180395A1 (de) 2021-09-16
CN115279506A (zh) 2022-11-01
JP7470201B2 (ja) 2024-04-17
EP4117834A1 (de) 2023-01-18

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