EP1514616A1 - Dispositif de laminage et procédé de laminage - Google Patents

Dispositif de laminage et procédé de laminage Download PDF

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Publication number
EP1514616A1
EP1514616A1 EP04021716A EP04021716A EP1514616A1 EP 1514616 A1 EP1514616 A1 EP 1514616A1 EP 04021716 A EP04021716 A EP 04021716A EP 04021716 A EP04021716 A EP 04021716A EP 1514616 A1 EP1514616 A1 EP 1514616A1
Authority
EP
European Patent Office
Prior art keywords
rolling
rolls
rollers
roll
rolling device
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.)
Withdrawn
Application number
EP04021716A
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Biedermann
Karl Lefor
Peter Münzner
Achim Dr. Schneider
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.)
MILLTEC GmbH
Wickeder Westgalenstahl GmbH
Josef Frohling GmbH
Original Assignee
Milltec GmbH
Wickeder Westgalenstahl GmbH
Josef Frohling 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 Milltec GmbH, Wickeder Westgalenstahl GmbH, Josef Frohling GmbH filed Critical Milltec GmbH
Publication of EP1514616A1 publication Critical patent/EP1514616A1/fr
Withdrawn legal-status Critical Current

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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
    • B21B37/58—Roll-force control; Roll-gap 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
    • B21B37/46—Roll speed or drive motor control
    • 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
    • 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
    • B21B2031/206—Horizontal offset of work rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/10—Motor power; motor current
    • B21B2275/12—Roll torque

Definitions

  • the invention relates to a rolling apparatus and a rolling method according to the preambles of claims 1 and 20, respectively.
  • each work roll is assigned at least one force meter which detects the force F 1 , F 2 acting in the longitudinal direction of the rolling stock, and in that a control device compares the force values acting on the two work rolls and the position control associated with each work roll to balance the detected forces F 1 , F 2 activated.
  • the pressures in the two Anstellzylindern for determining the rolling forces on one side of the nip and the indicated forces of the force measuring devices for Determination of rolling forces on the opposite side of the Nip be used, and that including the about the pressures in the displacement cylinders of the work rolls determinable work roll axial forces all axial forces determined mathematically in the framework during rolling operation become.
  • DE 196 18 712 A1 discloses a control method for a Roll stand for rolling a strip. This rolling mill exists from a pair of work rolls, a pair of back up rolls and a Pair of intermediate rolls. The regulations for rolling force, rebound force and roll displacement become set values for the rolling force, the rebound force and the roll displacement specified, in a roll stand model with a roll bending model were determined online. According to the technical teaching of DE 196 18 712 A1 are used to determine the setpoint values for rolling force, Rebound force and roll displacement in the roll bending model online at interpolation points relationships between the rolling force, the rebound force and the roller displacement on the one hand and a corresponding nip course on the other determined. A rolling stand and rolling process is respectively also known from DE 198 07 554 A1.
  • DE 692 27 431 T2 also deals with a rolling mill and a rolling process.
  • This rolling mill is equipped with a work roll, a support roll for vertical support the striker and driving the stripper, one Variety of horizontal support rollers holding the work roll on Roll diameter outside the rolling range and at both Touch horizontal sides of the stripper and set one the position of the work roll in both horizontal directions during rolling and counteracting against horizontal Cause rolling forces.
  • a device for applying horizontal counterbending forces to the work roll with elements that put the stripper in place axially further away from the roll area than the support rolls touch, and an adjusting device for moving the elements in the horizontal direction relative to the support rollers and forcing the elements against the work roll, wherein the Counterbending forces in the same direction as the effective horizontal Force acting through the support roller and to be rolled Material is applied to the work roll.
  • a scanning device for scanning at least a condition of the work roll during rolling either (i) the horizontal deflection of the work roll in the rolling area or (ii) the effective horizontal force, the to the work roll through the back-up roll and to be rolled Material is created, and a control device that during rolling causes the means for applying the Jacobbiege mechanism depending on the scanned state is controlled.
  • Yet another rolling stand for rolling sheets and strips is known from DE 44 47 382 C2. It is a rolling stand for rolling sheets and strips with in the scaffold stand stored in chocks working and Backup rolls.
  • the work rolls are on both sides of their chocks arranged, the balancing and bending cylinder for the work roll scene pieces include shifting blocks Help from between the sliding blocks and the scaffold stand vertically movable wedge rails adjustable parallel to the roll plane arranged in the rolling stand.
  • Each shift block one Work roll is one independent of the wedge rails the other work roll hydraulically adjustable Wedge rail associated with each other at the respective displacement block supported.
  • the goal is pursued and achieved, the horizontal force on a rolling stock without additional to be able to influence mechanical aids.
  • the invention relates to a rolling device and a rolling process using four- or six-roller or roll cold rolling stands.
  • a rolling device and a rolling process using four- or six-roller or roll cold rolling stands is preferred.
  • a six-roller or roller mill is used, wherein preferably the support and intermediate rolls driven and the work rolls are not driven.
  • a four- or 2N-roll stand In a four- or 2N-roll stand according to the invention are four or 2N motors, each of which drives a roller. Furthermore, a control is provided within the scope of the invention, by means of the speeds of the four or 2N engines be controlled or regulated so that i.a. a desired one or required horizontal offset between the axes of Back-up roll and stripper of a back-up stripper pair guaranteed and complied with.
  • a back-up roll drive is provided for the support rollers and the other rollers opposite the back-up rolls during operation of the rolling device have a horizontal offset
  • a separate Drive for the other rollers and a controller provided which are the backup roller drive and the separate drive for the further rolls such controls that a specifiable or predetermined horizontal offset (h) of the other Rolls against the back-up rolls (SW) during operation of the rolling device at least substantially complied with.
  • all rolls are in a roll stand arranged, which is in particular a cold roll stand is.
  • This can be a Z-high roll stand.
  • it is a four-roller mill stand, in particular may contain a Z-high insert.
  • Yet another preferred embodiment is that two back-up rolls, two intermediate rolls and two work rolls are present, and that the intermediate rolls through the driven further rollers are formed.
  • each of the two further rolls over a own motor is driven.
  • controller for determining a load correction value is means for detecting actual currents I above, and I below, from the respective pairing of motors for the upper support and work rolls on the one hand and for the lower support and Work rolls on the other hand contains.
  • the controller may in particular be designed to either fixedly set the load proportion for the support roller in each pairing support / work roll via a distribution of the operating currents I soll suitable for the motors by a respective control component (PI) or to take into account as a function of the horizontal force ,
  • a PT1 filter is too strong to avoid Variations provided.
  • the controller is designed is to the the peripheral speeds of the respective support and To compare work rolls. In doing so, the controller be further designed to the load distribution, to achieve a certain horizontal force is needed, in favor to adapt to a trouble-free operation.
  • the controller is designed to drive the drives To control rollers so that the horizontal force or the horizontal offset set to a desired value and on this value is maintained.
  • the controller is designed to control the total torque distributed on four rolls of two pairs of rolls. It can the controller may be further configured to control the total torque Distribute according to a distribution key that is fixed or depending on measurement and determination quantities variably controlled from the plant as well as from the rolling stock and rolling process or can be regulated to a desired or required Horizontal force and a corresponding horizontal offset to achieve.
  • the invention achieves the desired goal with a Rolling process, wherein two backup rolls are driven, so that two more rolls opposite the back-up rolls horizontal be offset, the other rollers driven separately be, and wherein the drive of the other rolls so is controlled that a predeterminable or predetermined horizontal offset the other rolls opposite the support rollers at least substantially adhered to.
  • a preferred embodiment of the method is that as the other two rolls in a four-roll mill stand two work rolls or in a six-roll mill stand two intermediate rollers are driven. Alternatively or in addition, it can be provided that each of the two further Rolling is driven by its own motor.
  • a load correction value is detected by detecting actual currents I above, and I below, from the respective pairing of motors for the upper support and work rolls on the one hand and for the lower support and work rolls on the other hand .
  • the load proportion for the support roller in each pairing support / work roll via a distribution of the operating currents I soll suitable for the motors by a respective control component either fixed or taken into account as a function of the horizontal force.
  • Another embodiment of the rolling process is that the peripheral speeds of the respective support and Work rolls are compared, in particular the load distribution, to achieve a given horizontal force is needed, adapted in favor of a trouble-free operation becomes.
  • the drives the driven rollers are controlled so that the horizontal force or the horizontal offset to a desired Value is set and held at this value, and / or that the total torque on four rolls of two pairs of rolls is distributed, in particular the total torque is distributed according to a distribution key that is fixed or depending on measurement and determination quantities variably controlled from the plant as well as from the rolling stock and rolling process or can be regulated to a desired or required Horizontal force and a corresponding horizontal offset to achieve.
  • MS is the torque or rolling moment on the back-up roll.
  • the circumferential force FS is very large compared to the normal force N, so it comes to sliding the rollers.
  • FIG. 3 shows a schematic first Representation to clarify the basic structure a Stitzwalzenatriebes.
  • the two back-up rollers SWoben and SWunten are driven by motors M.
  • the respective setpoint speeds n SWoben, soll and n SWunten should, with the associated actual speeds n SWoben, and n SWunten, is compared in a difference formation "_" and corresponding speed deviations ⁇ n determined, in turn, via a respective control PI, for example, the operating currents I should set suitable for the engines.
  • the target speeds n SWoben, should and n SWunten should be chosen so that, taking into account other mechanical means of the desired or required horizontal offset is guaranteed and adhered to, as far as this is possible by this simple basic structure.
  • the Support roller drive according to FIG. 3 provided with a load cascade be as by the schematic representation for clarity the construction of a back-up cylinder with load cascade according to the prior art in Fig. 4 is shown.
  • the backup roller drive shown in FIG. 4 is basically based on the principle according to FIG. 3, so that in connection with the Fig. 3 described and explained features for the Fig. 4 will not be described again, but hereby by explicit reference the description of the Fig. 3 also fully to the content of the following description of Fig. 4 is added.
  • the backup roller drive of Fig. 4 has in addition to the components of the basic structure of FIG. 3 nor a load cascade on, whereby the control u.a. also to the institution and Compliance with a desired or required horizontal offset is improved.
  • the load cascade shown in FIG. 4 shown to the right of the backup and work rolls is for a professional in construction and function easily without synonymous separate description can be seen here from FIG. 4 itself.
  • the motor controls of the motors M are made not only in response to the target speeds n SWoben, soll and n SWunten, soll and Istcardpurpose n SWoben, and n SWunten, ists , but also taking into account the load, before the difference for the deviation of the desired and actual speeds, ie, determined and taken into account before the determination of the speed difference ⁇ n, load shares, together with the preset or predetermined set speeds n SWoben, soll and n SWunten, should result in load-corrected target speeds, so to speak, before the actual speeds n SWoben, and n SWunten, is subtracted to obtain the speed difference ⁇ n.
  • the loads on the two support rollers are determined by detecting the actual currents I above, I and I below, and determining and taking into account the resulting total power consumption or the total current consumption of the two motors M so to speak for a load correction value for the control of each of the motors M both backing rolls further processed, as shown in FIG. 4.
  • the invention provides on the basis of this prior art Rolling and rolling processes, such as those from the construction emerge, which is shown in Fig. 5.
  • FIG. 5 Basically, the embodiment shown in FIG. 5 are based a rolling device and that from this structure resulting rolling processes on a rolling device after the Prior art, as shown in Fig. 4. insofar become the components and functions of the rolling device after 4 not described here separately, but by reference in its entirety to the following discussion taken with respect to FIG. 5.
  • peripheral speeds of the upper deviate and lower backup rolls too much from each other so is all Probably a one-sided slippage in the framework before and the load balancing should preferably avoided or be adapted at least suitably.
  • peripheral speeds of the respective Support and work rolls preferably be compared. at too strong deviations may also preferably provided be that the load distribution, to achieve a certain Horizontal force is needed, in favor of a trouble-free Operation is adjusted. It is more likely that the load proportion of the work roll drive increases (as slipping occurs when too much moment of the moment) Support roller to be transmitted), which is to increase the Horizontal force leads. The reverse direction, d. H. the reduction the load proportion of the work roll drive is rather unlikely and should also be preferred to preserve one positive sign of horizontal force.
  • At least four rollers are driven, but always in pairs same rolls up and down, and at least controlled two such drives, but again always in pairs same rolls up and down, even if more as four rolls (6, 8, ...) on / in a roll stand available are.
  • exactly four rollers are driven, namely ever a pair of upper support and work rolls and a pair of lower ones Support and work rolls, further preferably within of each pair a drive distribution is controlled and controlled a drive distribution between the two pairs becomes.
  • the control or regulation of the drives takes place the driven rollers so that the horizontal force or the horizontal offset is set to a desired value and held at this value.
  • the invention sees device-wise the use of a suitable controller and procedurally the use of an appropriate control or regulatory concept.
  • the total torque distributed by the invention in particular four rollers.
  • Distribution key which is fixed in the context of the invention or depending on measurement and determination quantities variably controlled from the plant as well as from the rolling stock and rolling process or can be regulated, serves to achieve a desired or required horizontal force and a corresponding Horizontal offset. From the total torque of a Pair of support / work rolls can be obtained, for example Deduction of backup roll torque the work roll torque.
  • the present invention is based on the idea that two rolls of two pairs of rolls, ie four rolls, or an exceeding maximum number of in one Roll stand to drive existing rollers each separately.
  • This drive concept in combination with the invention
  • Use of a corresponding control or regulation concept can the horizontal force without additional mechanical Aids affects and thus the horizontal offset between the axes of the support and work rolls of a adjusted and respected.
  • the invention relates in particular to a Four-roller drive, or quad-drive called, with four separately driven rolls of two support / work roll pairs, which four-roller drive u.a. in the invention Frame is used to influence the horizontal force.
  • This type of drive can be used in both Quarto and in sexto rolling or rolling stands, but also in rolling or roll stands with more than 4 or 6 rolls, where it only matters, the drive concept of the invention Apply to the goals and advantages of the invention to be able to use.
  • the present invention provides new and advantageous rolling devices and rolling process in particular for particularly advantageous adjustment and compliance with the horizontal offset between the axes of the support and work rolls by their separate drives.
  • a rolling device and a rolling process under Use of four- or six-roller or roller cold rolling stands.
  • Z-high scaffolds with a combination of a four-roller or roller mill stand with a Z-high insert.
  • a six-roller or roll stand used, preferably the support and intermediate rolls driven and the work rolls are not driven become.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
EP04021716A 2003-09-12 2004-09-13 Dispositif de laminage et procédé de laminage Withdrawn EP1514616A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342189 2003-09-12
DE10342189 2003-09-12

Publications (1)

Publication Number Publication Date
EP1514616A1 true EP1514616A1 (fr) 2005-03-16

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EP04021716A Withdrawn EP1514616A1 (fr) 2003-09-12 2004-09-13 Dispositif de laminage et procédé de laminage

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT501739B1 (de) * 2005-06-06 2006-11-15 Heinz Ing Altendorfer Walzkraft-einleitung in 4-walzengerüsten
WO2022008486A1 (fr) * 2020-07-09 2022-01-13 Sms Group Gmbh Procédé et produit programme d'ordinateur pour calculer un programme de passes afin d'obtenir un procédé de laminage stable

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5823508A (ja) * 1981-07-31 1983-02-12 Ishikawajima Harima Heavy Ind Co Ltd 形状制御機能を有する圧延機
DE10054580A1 (de) * 2000-11-03 2002-05-08 Sms Demag Ag Mehrwalzengerüst

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5823508A (ja) * 1981-07-31 1983-02-12 Ishikawajima Harima Heavy Ind Co Ltd 形状制御機能を有する圧延機
DE10054580A1 (de) * 2000-11-03 2002-05-08 Sms Demag Ag Mehrwalzengerüst

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0071, no. 02 (M - 211) 30 April 1983 (1983-04-30) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT501739B1 (de) * 2005-06-06 2006-11-15 Heinz Ing Altendorfer Walzkraft-einleitung in 4-walzengerüsten
WO2022008486A1 (fr) * 2020-07-09 2022-01-13 Sms Group Gmbh Procédé et produit programme d'ordinateur pour calculer un programme de passes afin d'obtenir un procédé de laminage stable

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