EP3999259A1 - Kaltwalzen von walzgut - Google Patents
Kaltwalzen von walzgutInfo
- Publication number
- EP3999259A1 EP3999259A1 EP20742679.2A EP20742679A EP3999259A1 EP 3999259 A1 EP3999259 A1 EP 3999259A1 EP 20742679 A EP20742679 A EP 20742679A EP 3999259 A1 EP3999259 A1 EP 3999259A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- work roll
- work
- rolling
- diameter
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
-
- 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
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
-
- 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
- B21B31/07—Adaptation of roll neck bearings
-
- 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
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
-
- 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
- B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills
- B21B35/141—Rigid spindle couplings, e.g. coupling boxes placed on roll necks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
- B21B2203/28—Mounting or dismounting bearing and chock as a unit
-
- 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
Definitions
- the invention relates to a rolling device, a method and a rolling train for cold rolling rolling stock.
- a rolling stock for example a
- the work rolls are arranged in a roll stand and are rotated about their longitudinal axes by a drive.
- rolling stands are arranged one behind the other and form a so-called rolling train through which the rolling stock traverses in one rolling direction, the thickness of the rolling stock being gradually reduced.
- rolling train through which the rolling stock traverses in one rolling direction, the thickness of the rolling stock being gradually reduced.
- Roll stand to roll stand and the rolling torques are reduced from roll stand to roll stand.
- the number of roll stands and the maximum reduction in thickness cannot, however, be increased as desired in terms of process technology, since the material strength of the rolled stock increases as a function of the reduction in thickness. From certain rolling stock strength values and
- a roll stand In addition to the work rolls, a roll stand usually has so-called back-up rolls that support the work rolls. Each roll is rotatably mounted at its ends on bearings which are each carried by a so-called chock which is installed in a holder of the roll stand so that it can be moved vertically. As the chocks can be moved vertically, the positions of the rolls can be changed and adapted to one another and to the thickness of the rolling stock. Bending forces can also be exerted on the work rolls via the work roll chocks, with which the
- Work rolls are slightly bent when rolling to one to achieve uniform thickness of the rolling stock in the axial direction, that is, along the longitudinal axes of the work rolls.
- the work rolls wear out as the rolled stock is rolled. Therefore, the work rolls are ground off after a certain rolling time. This successively reduces the roll diameter of the work rolls. Finally, the work rolls are replaced when theirs
- the diameter of a work roll used for the first time is equal to the maximum work roll diameter of the work roll and can be reduced to the minimum by repeated grinding
- Work roll diameter can be reduced.
- the difference between the maximum and minimum work roll diameter is determined, among other things, by the so-called hardening depth, which defines that area which extends radially into the interior from the surface of a work roll and which has a greater hardness than the rest of the material
- the work roll is between the corresponding maximum and minimum work roll diameter - and thus the current surface of the work roll is in an area with greater hardness than the rest of the work roll body - the work roll is used on the roll stand.
- the minimum work roll diameter is also determined by the rolling parameters (rolling torque, rolling force, rolling tension,
- the rolling parameters are in turn determined by the material properties of the rolling stock and by its
- Inlet thickness, outlet thickness and width are determined. So represents a relatively soft rolling stock with a large
- Runout thicknesses of less than 0.5 mm lead to high
- the invention is based on the object of a
- the object is achieved by a roll stand having the features of claim 1, a method having the features of claim 10 and a rolling train having the features of claim 15.
- Advantageous embodiments of the invention are the subject of the subclaims.
- Equipment set comprises two work rolls and for each work roll two associated with the work roll
- Work rolls of one and the same equipment set each have the same work roll diameter range.
- the work rolls of different equipment sets have different work roll diameter ranges, the work roll diameter range of one equipment set differing from the work roll diameter range of another equipment set if at least the minimum or the maximum differs
- the roll stand has
- the work roll drive has two drive spindles, each of which is designed to drive a work roll via the spindle head assigned to the work roll by rotating about a longitudinal axis of the drive spindle.
- the roll stand of a rolling device according to the invention can therefore have different work rolls
- each assembly set includes work roll chocks corresponding to its two work rolls in order to achieve the
- the roll stand can thus be advantageously adapted to the respective rolling stock.
- high-strength can be used for rolling
- Rolld stock work rolls of smaller work roll diameter are used than for rolling relatively soft rolling stock.
- Invention aims to be able to profitably process both relatively soft rolling stock and to be able to produce high-quality, high-strength steel products with small thicknesses, for example thicknesses less than 0.5 mm, with the same rolling device.
- Work roll bearings of all assembly sets are designed as rolling bearings, for example as tapered roller bearings.
- rolling device for example as tapered roller bearings.
- the minimum work roll diameter differs by 40mm to 90mm from the maximum work roll diameter of an assembly kit.
- the work rolls of an assembly set have a minimum work roll diameter of 340 mm and a maximum
- Assembly sets can be driven with the same drive spindles.
- the drive spindles therefore do not have to be changed when the roll stand is converted to work rolls with a different work roll diameter.
- a diameter ratio of an outer diameter to an inner diameter of a work roll bearing can be with
- the roll stand can be adapted to the corresponding rolling stock classes by selecting the equipment set with a respective diameter ratio of the work roll bearings. The decrease of the
- the diameter ratio of the work roll bearings to the work roll diameter takes into account that the sum of the outer radius of the work roll bearings and the wall thickness of the work roll chocks on the sides facing the rolling stock must be smaller than the minimum
- Work roll diameter Small work roll diameters are in turn suitable for high-strength and ultra-high strength rolling
- Work roll diameters also make it easier to bend the work rolls because the bending forces required for bending are reduced.
- a ratio of the height of a work roll chock to an outer diameter of a work roll bearing of at least one equipment set is less than 1.09. This too
- the aim of the rolling device is to reduce the work roll diameter by reducing the height of the work roll chocks.
- the reduction in the height of a work roll chock is particularly in combination with the Above-mentioned reduction of the diameter ratio of the outer diameter to an inner diameter of the
- At least one assembly set on the side of the work roll chock facing the rolling stock that is less than six percent of an outer diameter of a
- Equipment set equipped which is selected depending on the rolling stock.
- the rolling stock which is selected depending on the rolling stock.
- Work roll diameter of the one used for rolling Work rolls adapted to the strength, width, inlet thickness and / or outlet thickness of the rolling stock.
- the roll stand is equipped with an assembly set that is shown in
- Rolling device in a (multi-stand) rolling train is understood to mean the position that the rolling stand of the rolling device assumes in a sequence of all rolling stands of the rolling train in which the rolling stock passes through the rolling stands.
- most advantageous work roll diameter of the work rolls of a rolling device can depend on the position of the rolling device in the rolling train.
- Method is a bending limit for positive bending of the work rolls depending on a minimum wall thickness of the at least one equipment set
- This embodiment of the method according to the invention is also aimed at relieving the work roll chocks when the work rolls bend on their sides facing the rolling stock, by instead of these sides particularly stressful positive bends preferably cooperating with a crowning of the work rolls
- Negative bending of the work rolls can be carried out, which requires a suitably designed crown of the work rolls.
- the method is an axial displacement of the work rolls relative to one another as a function of a width and thickness of the rolling stock for at least one equipment set
- Strip edges can occur when rolling stock that is at risk of edge cracks, for example electrical steel with a silicon content of at least two percent.
- electrical steel with a silicon content of at least two percent for example electrical steel with a silicon content of at least two percent.
- Work rolls are prevented from touching central areas of the work rolls, in which the work rolls assume their maximum work roll diameter, when rolling very thin rolled stock in the area outside the rolled stock.
- a rolling train according to the invention has at least one rolling device according to the invention.
- the advantages of such a rolling train result from the above-mentioned advantages of a rolling device according to the invention.
- a rolling train according to the invention enables the rolling devices according to the invention to be converted into
- FIG. 1 shows a sectional view of an exemplary embodiment of a rolling device in the area of a work roll
- FIG. 2 shows work rolls and a rolling stock passed through between the work rolls
- FIG. 3 shows a work roll journal, a spindle head and a drive spindle in a sectional view
- Figure 1 shows a sectional view of a
- Rolling device 1 comprises a roll stand 5, several
- Each equipment set comprises two work rolls 7, 8 and, for each work roll 7, 8, two work roll chocks 9 and 8 assigned to the work roll 7, 8 a spindle head 11 assigned to the work roll 7, 8.
- the two work rolls 7, 8 of an assembly set have the same work roll diameter range, the work rolls 7, 8 of different assembly sets have different work roll diameter ranges.
- FIG. 2 shows the work rolls 7, 8 of an assembly set and one carried out between the work rolls 7, 8
- the work roll diameter D of a work roll 7, 8 is a maximum diameter of the
- Work roll 7, 8 and is accepted by the work roll 7, 8 in a central area 13, which is approximately circular-cylindrical and generally ground spherical or bottle-shaped.
- One end of the central region 13 of each work roll 7, 8 has a chamfer 15, the chamfers 15 of the two
- Work rolls 7, 8 are arranged opposite one another. Each end portion of a work roll 7, 8 is considered a
- Work roll diameter D is.
- the journal diameter d of the work rolls 7, 8 of all equipment sets match.
- Work rolls 7, 8 are each arranged in the area of one of the two lateral strip edges of the rolling stock 3.
- the strip edges of the rolling stock 3 are relieved during rolling, for example to avoid edge cracks in the strip edges that occur without relieving the strip edges when rolling rolling stock 3 at risk of edge cracks, for example from
- Each work roll chock 9 has a
- the work roll bearing 17 is a roller bearing, for example a tapered roller bearing, with an inner diameter dl, which corresponds to the journal diameter d of the work roll journal 16, and a
- Work roll bearings 17 of all equipment sets are at least approximately identical; for example, they differ from one another by no more than two percent.
- the outside diameter Dl of the work roll bearings 17 of the various assembly sets can differ significantly from one another. For example, a diameter ratio Dl / dl of the outer diameter Dl to the inner diameter dl increases
- this diameter ratio is for at least one assembly set, in particular for
- a ratio A / Dl of a height A of a work roll chock 9 to the outer diameter Dl of the work roll bearing 17 of the work roll chock 9 for at least one fitting set, in particular for all fitting sets, is preferably less than 1.09.
- the roll stand 5 For rolling a rolling stock 3 with the rolling device 1, the roll stand 5 is equipped with the work roll chocks 9 and work rolls 7, 8 of an assembly set.
- the roll stand 5 has four brackets 19, each receiving a work roll chock 9 and in which the
- Work roll chocks 9 are vertically displaceable, for example by hydraulic cylinders (not shown). In particular, bending forces can be exerted on the work rolls 7, 8 via the mountings 19. By a bending force in a first directed away from the rolling stock 3
- a work roll 7, 8 can be bent positively.
- a first load zone 23 of the work roll chock 9 facing the rolling stock 3 is used loaded, whereby in Figure 1 acting forces are shown by arrows in the first load zone 23.
- Bending force in a second bending force direction 22 directed towards the rolling stock 3, a work roll 7, 8 can be bent negatively.
- Embodiment also has support rollers 25, which are arranged above and below the holders 19 and vertically displaceable so that their positions the work roll diameters D and positions of the
- Figure 3 shows the work roll journal 16 of a
- the spindle head 11 is tubular
- An end of the spindle head 11 facing the work roll journal 16 forms an opening, the cross section of which corresponds to a cross section of the end of the work roll journal 16 and into which the end of the
- Work roll journal 16 protrudes.
- the cross section of the end of the work roll journal 16 is not circular, but has the shape of a circle, for example, from which two are reflected by a point reflection at the center of the circle
- Drive spindle 27 are transmitted about their longitudinal axis to the spindle head 11 and via the spindle head 11 to the work roll journal 16 and drive the work roll 7, 8.
- the rotations of the drive spindle 27 are generated by a (not shown) drive unit of the work roll drive, for example by a motor.
- Internal toothing 31 of the spindle head 11 are designed for the maximum torque of the work roll drive for driving the work roll 7, 8 to which the spindle head 11 is assigned.
- the spindle head 11 is also designed such that an angle between the longitudinal axes of the
- Figure 4 shows a work roll chock 9 of a further embodiment of a rolling device 1.
- the work roll chock 9 On a side 33 facing the rolling stock 3, the work roll chock 9 has a minimum wall thickness W1 which is smaller than a minimum wall thickness W2 on the side 34 facing away from the rolling stock 3.
- the minimum wall thickness W1 on the side 33 facing the rolling stock 3 is less than six percent of the outer diameter Dl of the work roll bearing 17 of the work roll chock 9
- FIG. 5 shows schematically a rolling train 35 with four rolling devices 1 according to the invention Rolling devices 1 are along a rolling direction 37 in which the rolling stock 3 runs through the rolling train 35,
- Rolling devices 1 of the rolling train 35 are similar
- the roll stand 5 of a rolling device 1 is equipped with an equipment set which is selected depending on the rolling stock 3, in particular on its strength, width b, inlet thickness and / or outlet thickness and on a position of the rolling device 1 in the rolling train 35.
- Rolling devices 1 are equipped.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19186746.4A EP3766595A1 (de) | 2019-07-17 | 2019-07-17 | Kaltwalzen von walzgut |
| PCT/EP2020/069895 WO2021009174A1 (de) | 2019-07-17 | 2020-07-14 | Kaltwalzen von walzgut |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3999259A1 true EP3999259A1 (de) | 2022-05-25 |
| EP3999259C0 EP3999259C0 (de) | 2023-09-06 |
| EP3999259B1 EP3999259B1 (de) | 2023-09-06 |
Family
ID=67402849
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19186746.4A Withdrawn EP3766595A1 (de) | 2019-07-17 | 2019-07-17 | Kaltwalzen von walzgut |
| EP20742679.2A Active EP3999259B1 (de) | 2019-07-17 | 2020-07-14 | Kaltwalzen von walzgut |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19186746.4A Withdrawn EP3766595A1 (de) | 2019-07-17 | 2019-07-17 | Kaltwalzen von walzgut |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11975371B2 (de) |
| EP (2) | EP3766595A1 (de) |
| CN (1) | CN114080279B (de) |
| WO (1) | WO2021009174A1 (de) |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE856735C (de) * | 1950-04-23 | 1952-11-24 | Erich Schulte | Einrichtung zum Auswechseln von auszutauschenden Walzensaetzen |
| AT272245B (de) | 1966-08-08 | 1969-06-25 | Voest Ag | Vorrichtung zur Abstützung der über Gelenkspindeln antriebbaren Spindelköpfe von herausziehbare Arbeitswalzen aufweisenden Walzgerüsten während des Walzenwechsels |
| GB1376605A (en) * | 1971-04-15 | 1974-12-11 | Wean United Inc | Rolling mill with roll change arrangement |
| US4238947A (en) * | 1979-05-09 | 1980-12-16 | National Steel Corporation | Work roll chock assembly for a rolling mill |
| JPS6137306A (ja) * | 1984-07-30 | 1986-02-22 | Hitachi Ltd | 圧延機 |
| JPH01309708A (ja) | 1988-06-08 | 1989-12-14 | Hitachi Ltd | 圧延設備及び作業ロール駆動用スピンドルカップリングの交換装置 |
| JPH04105704A (ja) | 1990-08-24 | 1992-04-07 | Kobe Steel Ltd | 金属箔圧延用ワークロール |
| JP3057867B2 (ja) | 1991-12-06 | 2000-07-04 | 石川島播磨重工業株式会社 | 圧延機用スピンドル |
| US5746081A (en) * | 1993-03-27 | 1998-05-05 | Sms Schloemann-Siegmag Aktiengesellschaft | Reversing compact installation for cold rolling strip-shaped rolling material |
| DE19710552A1 (de) | 1997-03-14 | 1998-09-17 | Schloemann Siemag Ag | Verbindung zwischen dem Spindelkopf einer Zahn- oder Kreuzgelenkspindel und einem Walzenzapfen |
| DE10163373C1 (de) | 2001-12-22 | 2003-02-27 | Masch Und Werkzeugbau Gmbh | Verfahren zum Wechsel von Arbeitswalzen in einem Walzgerüst |
| DE10223000A1 (de) | 2002-05-24 | 2003-12-04 | Sms Demag Ag | Verfahren und Vorrichtung zum Wechseln von Arbeitswalzenpaaren und/oder Stützwalzenpaaren an Walzgerüsten |
| 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 |
| 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 | |
| DE102004007831A1 (de) | 2004-02-18 | 2005-09-01 | Sms Demag Ag | Verfahren und Einrichtung zum Wechseln von Walzensätzen in Walzgerüsten einer Walzstraße |
| KR100987527B1 (ko) | 2007-03-14 | 2010-10-13 | 가부시키가이샤 아이에이치아이 | 단수 교체 다단 압연기 |
| CN102078880B (zh) | 2010-11-24 | 2013-05-29 | 佛山市高明基业冷轧钢板有限公司 | 一种冷轧机组系统及其实现方法 |
| DE102011087605A1 (de) | 2011-12-01 | 2013-06-06 | Sms Siemag Ag | Einbaustück und Verfahren zu dessen Herstellung |
| CN104438318B (zh) | 2013-09-16 | 2016-04-27 | 钱钢 | 一种多辊可换式冷轧机 |
| WO2015121974A1 (ja) * | 2014-02-14 | 2015-08-20 | 東芝三菱電機産業システム株式会社 | 圧延機の電動機速度制御装置 |
| CN107900108B (zh) | 2017-12-22 | 2024-04-30 | 一重集团大连工程技术有限公司 | 不带复位弹簧的滑键连接式工作辊传动接轴 |
| CN207981856U (zh) | 2018-02-08 | 2018-10-19 | 天津海钢板材有限公司 | 一种冷轧机用快拆快装机构 |
| CN109647894A (zh) * | 2018-12-30 | 2019-04-19 | 衡阳市鑫诚和重型机械设备制造有限公司 | 轧机换辊装置及其换辊方法 |
-
2019
- 2019-07-17 EP EP19186746.4A patent/EP3766595A1/de not_active Withdrawn
-
2020
- 2020-07-14 CN CN202080051553.3A patent/CN114080279B/zh not_active Expired - Fee Related
- 2020-07-14 EP EP20742679.2A patent/EP3999259B1/de active Active
- 2020-07-14 US US17/626,949 patent/US11975371B2/en active Active
- 2020-07-14 WO PCT/EP2020/069895 patent/WO2021009174A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021009174A1 (de) | 2021-01-21 |
| EP3999259C0 (de) | 2023-09-06 |
| US20220258220A1 (en) | 2022-08-18 |
| EP3999259B1 (de) | 2023-09-06 |
| CN114080279A (zh) | 2022-02-22 |
| CN114080279B (zh) | 2023-07-11 |
| EP3766595A1 (de) | 2021-01-20 |
| US11975371B2 (en) | 2024-05-07 |
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