EP0891821A2 - Verfahren zum Walzen von Flachmaterial und Band - Google Patents
Verfahren zum Walzen von Flachmaterial und Band Download PDFInfo
- Publication number
- EP0891821A2 EP0891821A2 EP98250208A EP98250208A EP0891821A2 EP 0891821 A2 EP0891821 A2 EP 0891821A2 EP 98250208 A EP98250208 A EP 98250208A EP 98250208 A EP98250208 A EP 98250208A EP 0891821 A2 EP0891821 A2 EP 0891821A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- force
- positive
- roll
- rolling
- bending
- 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
- 238000005096 rolling process Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000013000 roll bending Methods 0.000 claims abstract description 25
- 238000005452 bending Methods 0.000 claims abstract description 14
- 230000007423 decrease Effects 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 241001295925 Gegenes Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- 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
- B21B37/72—Rear end control; Front end control
-
- 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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/38—Control of flatness or profile during rolling of strip, sheets or plates using roll bending
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2269/00—Roll bending or shifting
- B21B2269/02—Roll bending; vertical bending of rolls
- B21B2269/04—Work roll bending
-
- 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
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/203—Balancing rolls
Definitions
- the invention relates to a method for rolling flat material and strip in one Roll stand with work and back-up rolls as well as devices for balancing as well as for the positive and negative bending of those stored in your chocks
- Work rolls consisting of vertically arranged piston-cylinder units supported on both sides of the stand from above and below against everyone Built-in projections extending towards the stud window can be applied and with which - depending on the loading of the Kolber cylinder units - the chocks are movable away from each other and towards each other.
- actuators are available in four-high rolling racks to influence Roll gap and strip profile available.
- One of them is the positive and negative Bending of the work rolls using the vertical nip plane Hydraulic cylinders are bent in both directions along their longitudinal axes can.
- the cross-sectional profile of the rolling stock can be limited adapted bsw. to be changed.
- the "positive” bend takes place via piston-cylinder units, which at the same time the Balancing the rollers serve and the indirectly or directly in the Stand windows, for example, are used in hydraulic blocks.
- piston-cylinder units which at the same time the Balancing the rollers serve and the indirectly or directly in the Stand windows, for example, are used in hydraulic blocks.
- Hydraulic blocks or in operative connection with the support roller chocks the piston-cylinder units for the "negative" bend with which the rollers in the Can be bent in terms of a convex cross-sectional contour of the roll gap.
- the negative work roll bend however, has the disadvantage that it is only can be switched on when the rolling stock has entered the roll gap.
- the means that to act on the piston-cylinder units for the negative Work roll bending Roll load must be given, otherwise the contact between Work and backup roll is not guaranteed.
- the result of this requirement is the loss of unregulated non-salable tape lengths on the and outgoing belt, the length of which is considerable due to switching and control times.
- the object of the present invention is based on known methods for positive and negative work roll bending, by a corresponding regulation the piston-cylinder units for the positive roll bending or Work roll balancing and the piston-cylinder units for the negative Roller bending to minimize the loss of unregulated strip lengths and thereby increasing the economy of the rolling mill.
- the work rolls are operated by means of the piston-cylinder units balanced for the positive and negative roll bending so that there is sufficient contact pressure between the support and work rolls to the back-up rollers to rotate without slip and the bearing play of the support and Eliminate work rolls.
- the negative roll bending force and thus the Pressure in the piston-cylinder units regulated by a servo valve set so that the roll gap contour necessary for the profile and flatness control of the road under load.
- the positive roll bending force is the necessary Balancing force set higher.
- the rolling stock has entered the roll gap Cylinder of the piston-cylinder units for positive work roll bending on the Chocks moved up and fixed in position after the Balancing force was taken over by the rolling force, whereby the adjusting force increase in the cylinders for positive work roll bending Increasing the force for the negative roll bending is compensated.
- the roll gap is expanded to the desired size, the force to Balancing is taken over by the rolling force, which makes the Balancing cylinders lose contact with the chocks.
- the cylinders of the Piston-cylinder units are then moved against the chocks and in fixed their position at the same time reinforcing the cylinders to the negative Work roll bending the bending effect of the work rolls by the rolling force and thus generate the desired roll gap contour.
- Balancing cylinder automatically generates the necessary balancing force in order to To prevent the work rolls from slamming. That is until the expiring A regulation of the roll gap correction of the strip profile is possible at the end of the strip; the End losses affecting productivity are eliminated by the invention avoided.
- the hydraulic equipment and controls are designed so that the corresponding switching processes take place as well as pressure fluctuations / pressure peaks can be compensated.
- the invention can be used both in broadband finishing lines, four-high reversing stands, Heavy plate mills, Steckel mills and in thin slab casting and rolling plants apply.
- a particular advantage of the invention is the fact that for the The necessary control procedure subsequently used in existing rolling mills can be used using the existing piston-cylinder units can.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Basic Packing Technique (AREA)
Abstract
Description
Claims (3)
- Verfahren zum Walzen von Flachmaterial und Band in einem Walzgerüst mit Arbeits- und Stützwalzen sowie mit Einrichtungen zum Ausbalancieren sowie zur positiven und negativen Biegung der in ihren Einbaustücken gelagerten Arbeitswalzen, bestehend aus vertikal angeordneten Kolben-Zylindereinheiten, die beidseitig sich am Ständer abstützend von oben und unten gegen an jedem Einbaustück ausgebildete, sich in Richtung Ständerfenster erstreckende Vorsprünge anlegbar sind und mit denen - je nach Beaufschlagung der Kolber-Zylindereinheiten - die Einbaustücke voneinanderweg und aufeinanderzubewegbar sind, gekennzeichnet durch folgende Verfahrensschritte:a) die Arbeitswalzen werden bei geöffnetem Walzspalt mittels der Kolben-Zylndereinheiten für die positive und negative Walzenbiegung spielfrei gegen die Stützwalzen gefahren,b) der Druck in den Kolben-Zylindereinheiten für die negative Biegung und damit die negative Walzenbiegekraft wird so eingestellt, daß mit dieser Einstellung die für die Profil- und Planheitsregelung der Walzstraße unter Last notwendige Walzspaltkorrektur erreicht wird,c) der Druck in den Kolben-Zylindereinheiten für die Ausbalancierung und positive Biegung und damit die positive Walzenbiegekraft wird um die notwendige Ausbalancierungskraft höher eingestellt,d) beim Einlaufend des Walzgutes erweitert die Walzkraft den Walzspalt auf die gewünschte Größe, wobei die erforderliche Ausbalancierungskraft automatisch von der Walzkraft übernommen wird,e) beim Auslaufen des Walzgutes aus dem Walzspalt verringert sich dieser und die erforderliche Ausbalancierungskraft wird automatisch durch die Zylindereinheiten für die positive Biegung wieder hergestellt.
- Verfahren zum Walzen von Flachmaterial und Band in einem Walzgerüst mit Arbeits- und Stützwalzen nach Anspruch 1;
dadurch gekennzeichnet,
daß nach dem Einlaufen des Walzgutes in den Walzspalt die Zylinder der Kolben-Zylindereinheiten zur positiven Arbeitswalzenbiegung an die Einbaustücke herangefahren und in ihrer Position festgelegt werden, nachdem die Ausbalancierungskraft durch die Walzkraft übernommen wurde, wobei die sich einstellende Krafterhöhung in den Zylindem zur positiven Arbeitswalzenbiegung durch Erhöhung der Kraft für die negative Walzenbiegung kompensiert wird. - Verfahren zum Walzen von Flachmaterial und Band in einem Walzgerüst mit Arbeits- und Stützwalzen nach Anspruch 1 und 2,
dadurch gekennzeichnet,
daß auch während des Walzprozesses durch entsprechende Druckerhöhung oder Druckreduzierung in den Kolben-Zylindereinheiten für die positive und negative Walzenbiegung von negativer auf positive Biegung der Walzen umschaltbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19730262A DE19730262C1 (de) | 1997-07-09 | 1997-07-09 | Verfahren zum Walzen von Flachmaterial und Band |
DE19730262 | 1997-07-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0891821A2 true EP0891821A2 (de) | 1999-01-20 |
EP0891821A3 EP0891821A3 (de) | 2002-05-29 |
EP0891821B1 EP0891821B1 (de) | 2004-01-14 |
Family
ID=7835749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98250208A Expired - Lifetime EP0891821B1 (de) | 1997-07-09 | 1998-06-15 | Verfahren zum Walzen von Flachmaterial und Band |
Country Status (4)
Country | Link |
---|---|
US (1) | US5906129A (de) |
EP (1) | EP0891821B1 (de) |
DE (2) | DE19730262C1 (de) |
ES (1) | ES2210665T3 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6220071B1 (en) | 2000-01-20 | 2001-04-24 | Mill Design & Consulting Services, Llc | Method and apparatus for controlling strip edge relief in a cluster rolling mill |
DE102006059709A1 (de) * | 2006-12-18 | 2008-06-19 | Siemens Ag | Walzverfahren für ein Band |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55109509A (en) * | 1979-02-13 | 1980-08-23 | Nippon Steel Corp | Controlling method for double chock bender in continuous rolling mill |
JPS59156509A (ja) * | 1983-02-25 | 1984-09-05 | Mitsubishi Heavy Ind Ltd | ワ−クロ−ルベンデイング装置 |
US4773246A (en) * | 1986-02-14 | 1988-09-27 | Clecim | Process for adjusting the profile of rolls movable in a rolling mill and improved rolling mill for carrying out the process |
DE3728795A1 (de) * | 1987-08-26 | 1989-03-09 | Mannesmann Ag | Walzgeruest mit arbeitswalzen |
DE4417274A1 (de) * | 1994-05-18 | 1995-11-23 | Schloemann Siemag Ag | Verfahren zum Betreiben eines Walzgerüstes |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1065053A1 (ru) * | 1982-10-01 | 1984-01-07 | Липецкий политехнический институт | Устройство дл регулировани профил рабочих валков стана кварто |
DE4314472A1 (de) * | 1993-05-03 | 1994-11-10 | Schloemann Siemag Ag | Biegeblock zum Biegen der Walzen von Mehrwalzen-Walzgerüsten |
US5752404A (en) * | 1996-12-17 | 1998-05-19 | Tippins Incorporated | Roll shifting system for rolling mills |
-
1997
- 1997-07-09 DE DE19730262A patent/DE19730262C1/de not_active Expired - Fee Related
-
1998
- 1998-06-15 DE DE59810575T patent/DE59810575D1/de not_active Expired - Lifetime
- 1998-06-15 EP EP98250208A patent/EP0891821B1/de not_active Expired - Lifetime
- 1998-06-15 ES ES98250208T patent/ES2210665T3/es not_active Expired - Lifetime
- 1998-07-08 US US09/111,847 patent/US5906129A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55109509A (en) * | 1979-02-13 | 1980-08-23 | Nippon Steel Corp | Controlling method for double chock bender in continuous rolling mill |
JPS59156509A (ja) * | 1983-02-25 | 1984-09-05 | Mitsubishi Heavy Ind Ltd | ワ−クロ−ルベンデイング装置 |
US4773246A (en) * | 1986-02-14 | 1988-09-27 | Clecim | Process for adjusting the profile of rolls movable in a rolling mill and improved rolling mill for carrying out the process |
DE3728795A1 (de) * | 1987-08-26 | 1989-03-09 | Mannesmann Ag | Walzgeruest mit arbeitswalzen |
DE4417274A1 (de) * | 1994-05-18 | 1995-11-23 | Schloemann Siemag Ag | Verfahren zum Betreiben eines Walzgerüstes |
Non-Patent Citations (3)
Title |
---|
DATABASE WPI Section Ch, Week 198434 Derwent Publications Ltd., London, GB; Class M21, AN 1984-212560 XP002195081 -& SU 1 065 053 A (LIPETSK POLY), 7. Januar 1984 (1984-01-07) * |
PATENT ABSTRACTS OF JAPAN vol. 004, no. 158 (M-039), 5. November 1980 (1980-11-05) -& JP 55 109509 A (NIPPON STEEL CORP;OTHERS: 01), 23. August 1980 (1980-08-23) * |
PATENT ABSTRACTS OF JAPAN vol. 009, no. 003 (M-349), 9. Januar 1985 (1985-01-09) -& JP 59 156509 A (MITSUBISHI JUKOGYO KK), 5. September 1984 (1984-09-05) * |
Also Published As
Publication number | Publication date |
---|---|
EP0891821A3 (de) | 2002-05-29 |
ES2210665T3 (es) | 2004-07-01 |
DE19730262C1 (de) | 1998-10-22 |
US5906129A (en) | 1999-05-25 |
DE59810575D1 (de) | 2004-02-19 |
EP0891821B1 (de) | 2004-01-14 |
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