US20100050727A1 - Rolling Mill and Method for Controlling a Rolling Mill - Google Patents

Rolling Mill and Method for Controlling a Rolling Mill Download PDF

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Publication number
US20100050727A1
US20100050727A1 US12/445,086 US44508607A US2010050727A1 US 20100050727 A1 US20100050727 A1 US 20100050727A1 US 44508607 A US44508607 A US 44508607A US 2010050727 A1 US2010050727 A1 US 2010050727A1
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United States
Prior art keywords
stand
metal strip
rolling mill
strip
rolling
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Abandoned
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US12/445,086
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English (en)
Inventor
Berthold Botta
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Siemens AG
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Siemens AG
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Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BOTTA, BERTHOLD
Publication of US20100050727A1 publication Critical patent/US20100050727A1/en
Abandoned legal-status Critical Current

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    • 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
    • B21B37/48—Tension control; Compression control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • 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
    • B21B1/24—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 in a continuous or semi-continuous process

Definitions

  • the invention relates to a rolling mill, in particular a cold-strip tandem rolling mill, and to a method for controlling such a rolling mill.
  • the invention relates, furthermore, to the use of a first stand of a rolling mill, in particular of a cold-strip tandem rolling mill.
  • One objective of the distribution of pass reductions in rolling mills, particularly in cold-strip tandem rolling mills, may also be, as well as the distribution of the pass reductions for technological reasons, a distribution of the pass reductions according to the mechanical engineering circumstances of the individual roll stands, in order to utilize these optimally in terms of production.
  • discontinuous tandem mill trains which use as entry material both longitudinally divided hot strips and strips from hood-type annealing processes in which the coils are wound with low strip tension for technological reasons, it may therefore happen that the first stand of the tandem mill train can apply only low rolling power.
  • this first stand can furnish the desired rolling power.
  • An increase in the rolling power of the roll stand can be achieved in two ways, to be precise by increasing the rolling force and/or by increasing the tensile stresses in the metal strip.
  • An increase in the rolling force can therefore take place by means of an increase in the system pressure of the hydraulic screwdown and/or an enlargement of a piston area of a screwdown cylinder.
  • limits are often placed on these possibilities, or an appropriate increase in the volume force is not possible.
  • Reasons for this are, for example, that the operating pressure is already close to the permissible pressure limit, and an increase is therefore no longer possible, or that an enlargement of the piston area, that is to say the installation of a new screwdown cylinder, cannot be carried out for reasons of installation space.
  • an increase in the rolling force may fail because the existing stand columns can no longer absorb the additional forces.
  • the increase in an entry-side strip tension upstream of the first stand of the tandem mill train in the production direction may also take place by the installation of an S-roll (bridle), of a tension or multiple-roll bridle or of a two-high roll stand.
  • S-roll bridle
  • these possibilities likewise often have placed on them limits which are predetermined by structural circumstances (space requirements) or by technological parameters, such as oiled metal strips.
  • an improved rolling mill in particular an improved cold-strip tandem rolling mill, and also an improved method for controlling such a rolling mill can be specified.
  • the rolling mill should have a low space requirement and have an improved controllability of a strip run.
  • an existing rolling mill in particular an existing cold-strip tandem rolling mill, can be retrofit so that this can be operated by means of the control method according to an embodiment.
  • a rolling mill in particular a cold-strip tandem rolling mill for the production of a metal strip, may have a plurality of stands arranged in a tandem mill train, a first stand in a production direction of the metal strip being designed as a driving stand and serving as the entry for a section of the tandem mill train in which a main thickness reduction of the metal strip takes place, and an increase in a mechanical entry tension of the metal strip being achievable by means of a corresponding activation of the driving stand.
  • a thickness reduction of the metal strip may be implementable by means of the driving stand, but this thickness reduction being dispensed with essentially in favor of an increase in the mechanical entry tension of the metal strip.
  • the driving stand or its supporting and/or working rolls may be, during the rolling of the metal strip, at least partially:—drivable in the production direction of the metal strip, this drive preferably being lower than that of a stand following in the production direction;
  • the driving stand may be operable in such a way that essentially no slip occurs between a working roll of the driving stand and the metal strip.
  • a second stand in the production direction of the metal strip may be designed as a first actively rolling roll stand, by means of which a first substantial thickness reduction of the metal strip can be implemented.
  • the rolling mill may have downstream of the first actively rolling roll stand in the production direction of the metal strip at least one following actively rolling roll stand.
  • the rolling mill may have no assembly preceding the tandem mill train and may have an action increasing the strip tension, hence, for example, no S-roller arrangement, no tension bridle and/or no two-high stand.
  • the rolling mill may have directly upstream of the entry stand, opposite to the production direction of the metal strip, with the exception of a deflecting roller, an uncoiler.
  • a last stand of the rolling mill may be designed as a driving stand.
  • the first stand and the last stand may be operable alternately as a driving stand and as an actively rolling roll stand for a reversing operation of the rolling mill.
  • a retrofitted rolling mill in particular a retrofitted cold-strip tandem rolling mill, may be implemented having upstream of a tandem mill train in the production direction of a metal strip no assembly with the function of increasing the strip tension, and the retrofitted rolling mill being designed as described above.
  • an assembly with the function of increasing the strip tension may be demounted.
  • a roll installation or rolling mill train in particular a cold rolling installation or cold rolling mill train, may have a rolling mill, preferably a cold-strip tandem rolling mill, as described above.
  • a first stand in a production direction of the metal strip may be activated as a driving stand, a significant increase in the mechanical entry tension for the metal strip taking place by means of the driving stand, on the one hand, and, on the other hand, no appreciable thickness reduction of the metal strip being carried out.
  • the driving stand or its supporting and/or working rolls being, during the rolling of the metal strip may be at least partially:—driven in the production direction of the metal strip, this drive preferably being lower than that of a stand following in the production direction;—operated as a generator; and/or—driven opposite to the production direction.
  • the driving stand in the production direction of the metal strip may be operated in such a way that essentially no slip occurs between a working roll of the driving stand and the metal strip.
  • a second stand in the production direction of the metal strip may be designed as a first actively rolling roll stand, by means of which a first substantial thickness reduction of the metal strip is carried out.
  • a last stand of the rolling mill may be designed as a driving stand.
  • the first stand and the last stand may be operated alternately as a driving stand and as an actively rolling roll stand for a reversing operation of the rolling mill.
  • a significant increase in the mechanical entry tension for the metal strip may take place by means of the driving stand.
  • the driving stand can be designed as described above.
  • the rolling mill can be operated or may be operable by means of a method as described above.
  • FIG. 1 shows a cold-strip tandem rolling mill according to the prior art for continuous operation
  • FIG. 2 shows a cold-strip tandem rolling mill according to an embodiment likewise for continuous operation.
  • an available or installed rolling power is utilized to the effect that the individual reductions in the roll stands are distributed to the stands such that the first stand of the mill train (entry stand) in a production direction of a metal strip assumes the function of a driving stand for increasing the entry tension.
  • the driving stand then serves mainly for increasing the entry tension of the metal strip, and the overall degree of delamination for the metal strip is distributed to the remaining stands of the rolling mill by a distribution of a respective pass reduction.
  • an overall degree of delamination to be implemented in a five-stand rolling mill lies at 10% of a metal strip thickness
  • each roll stand would take over only approximately 2.5% delamination. That is to say, instead of a respective delamination of 2% in the case of fivefold successive rolling, according to various embodiments the overall degree of delamination is distributed to the four roll stands which follow the driving stand and which in each case have to take over only 0.5% more delamination. According to various embodiments, therefore, a redistribution of the rolling power to the roll stands following the entry/driving stand in the production direction occurs.
  • a saving of additional assemblies having the function of increasing the strip tension is obtained by utilizing an existing roll stand for increasing the entering strip tension, and improved strip guidance is also obtained.
  • the better strip guidance affords an improved controllability and stabilization of a strip run of the metal strip by an equalization of the tensile forces as a result of a decoupling of eccentricities of a coil at an uncoiler.
  • the rolling mill has a plurality of roll stands in a tandem train, a roll stand set up for delamination being designed as an assembly with the function of increasing the strip tension, as what is known as a driving stand.
  • a control method for a rolling mill is made available, a roll stand being activated in such a way that it functions for the metal strip as an assembly with the function of increasing the strip tension.
  • the rolling mill is configured to the effect or operated to the effect that a delamination of the metal strip may take place by means of the driving stand, but this delamination is essentially dispensed with, and an increase in the mechanical entry tension of the metal strip takes place by means of the driving stand.
  • the increase in the mechanical entry tension of the metal strip is obtained by means of a suitable operation of the driving stand.
  • This is, for example, a generator operation in which the rolls of the driving stand are not driven.
  • a first actively rolling roll stand of the rolling mill is a roll stand which is second in the production direction of the metal strip.
  • a first substantial thickness reduction of the metal strip takes place by means of this first actively rolling roll stand.
  • the driving stand is a first stand of the rolling mill in the production direction of the metal strip, preferably a first stand of a tandem rolling mill.
  • the rolling mill is characterized in that it has no S-roll arrangement, no tension or multiple-roll bridle and also no two-high roll stand preceding the tandem mill train.
  • some embodiments relate to a (retrofitted) rolling installation, in particular a (retrofitted) cold rolling installation with a (retrofitted) rolling mill, preferably with a (retrofitted) cold-strip tandem rolling mill.
  • This rolling installation has on the entry side, as an assembly with the function of increasing the strip tension, preferably only a single roll stand of the tandem mill train, which roll stand is operated correspondingly as a driving stand with the function of increasing the strip tension. That is to say, the rolling installation according to various embodiments has no S-roll arrangement, no tension or multiple-roll bridle and also no two-high roll stand.
  • the following statements refer to a cold-strip tandem rolling mill with a metal-strip entry section 10 configured according to various embodiments and with a tandem mill train 20 set up according to various embodiments.
  • the tandem mill train 20 is operated or activated differently, as compared with the prior art, thus having effects on the metal-strip entry section 10 of the cold-strip tandem rolling mill 1 . That is to say, in the metal-strip entry section 10 , an assembly 260 with the function of increasing the strip tension becomes obsolete ( FIG. 1 ).
  • the invention is not to be restricted to cold-strip tandem rolling mills 1 , but is to relate in general to tandem mill trains 20 .
  • a tandem mill train 20 is understood to mean a roll stand arrangement which is constructed from at least two roll stands 220 ; 230 ; 240 ; 250 which are connected in series, preferably connected directly in series, in a production direction P of a metal strip 100 . That is to say, also, the invention can be employed in a two-stand mill train.
  • FIG. 1 shows two or three essential sections of a conventional cold-strip tandem rolling mill 1 , specifically the metal-strip entry section 10 and the tandem mill train 20 following the latter in the production direction P of the metal strip 100 . Furthermore, located in the cold-strip tandem rolling mill 1 is a metal-strip exit section (not illustrated in the drawing) which, for example, has a coiler for a reversing operation or further assemblies, such as, for example, a skin-pass/leveling mill train, following the cold-strip tandem rolling mill 1 .
  • the metal-strip entry section 10 of the cold-strip tandem rolling mill 1 has a coil 110 which is seated exchangeably on an uncoiler 270 and can be unwound and the metal strip 100 of which enters the tandem mill train 20 (corresponding here to an actively rolling region 25 of the rolling mill 1 ) of the cold-strip tandem rolling mill 1 via an assembly 260 with the function of increasing the strip tension and via a deflecting roller 210 .
  • said assembly is designed as an S-roller or an S-roller arrangement (bridle) or a tension or multiple-roller bridle or as what is known as a driver (two-high roll stand).
  • Bridle units guide and straighten the metal strip 100 and maintain its internal tensile stresses, in that, for example, adjustable rollers arranged above the strip run of the metal strip 100 can be lowered by means of a mechanical drive out of an initial position onto a strip surface into a working position.
  • the strip bent alternately in the working position of a multiple-roller bridle unit leaves the bridle unit at a working roll located nearest to a roll nip of the assigned roll stand 220 , and level with a run-through line of the roll stand (not illustrated in the drawing).
  • the assembly 260 with the function of increasing the strip tension is designed as an S-roller arrangement (bridle).
  • the tandem mill train 20 has a plurality of roll stands 220 ; 230 ; 240 ; 250 which all function as actively rolling roll stands 220 ; 230 ; 240 ; 250 . That is to say, during the rolling of a metal strip 200 , an appreciable thickness reduction of a metal strip 100 takes place at all the roll stands 220 ; 230 ; 240 ; 250 of the rolling mill 1 . That is to say, a first stand 220 (also called an entry stand) of the tandem mill train 20 is also at the same time a first actively rolling roll stand 230 .
  • tandem mill train 20 which may conform in its set-up to that shown in the prior art, is activated in another way.
  • the first stand 220 of the tandem mill train 20 is used in the function of a driver, in order to implement a build-up of mechanical tension in the metal strip 100 , in front of the actual actively rolling region 25 (section 25 of the tandem mill train 20 in which a main thickness reduction of the metal strip 100 takes place) of the tandem mill train 20 in the production direction P of the metal strip 100 .
  • the build-up of mechanical tension can take place in the first stand 220 of the tandem mill train 20 in the production direction P of the metal strip 100 , an assembly 260 with the function of increasing the strip tension, such as is illustrated, for example, by the S-roller arrangement in FIG. 1 , becomes obsolete.
  • the first stand 220 only has its function changed, and therefore the second stand 230 in the production direction P within the tandem mill train 20 constitutes the first actively rolling stand 230 .
  • the cold-strip tandem rolling mill 1 has a metal-strip entry section 10 according to various embodiments with an uncoiler 270 and with a deflecting roller 210 .
  • the tandem mill train 20 according to various embodiments has a plurality of roll stands 220 , 260 ; 230 ; 240 ; 250 , only the roll stands 230 ; 240 ; 250 arranged downstream of the first stand 220 being actively rolling roll stands.
  • the first stand 220 in the production direction P of the metal strip 100 is designed as an assembly 260 with the function of increasing the strip tension.
  • This first stand 220 is designated below as a driving stand 260 which in this case is no longer actively rolling, but serves mainly for increasing the mechanical strip tension of the metal strip 100 .
  • this driving stand 260 may be operated as an actively rolling roll stand 220 , 260 , which may be advantageous particularly for a reversing operation of a reversing rolling mill (see also below) or else if a high thickness reduction is required for a metal strip 100 .
  • the rolls of the driving stand 260 which is preferably designed as a four-high roll stand, exerts a force on the metal strip 100 which, in a static situation acts essentially perpendicularly on a surface (side of sheet-like form) of the metal strip 100 .
  • this force exerted on the metal strip 100 is not sufficient to leave behind a substantial plastic deformation in the metal strip 100 .
  • a large part of the deformation of the metal strip 100 caused by the driving stand 260 is in this case of an elastic nature.
  • the driving stand 260 it is possible to operate the driving stand 260 as a generator.
  • all or only one or a plurality of rolls of the driving stand 260 may run as a generator.
  • Other rolls may, for example, be driven with a right-hand or left-hand run.
  • all the rolls of the driving stand 260 run as a generator.
  • a force directed opposite to the production direction P in the metal band 100 acts on the latter, so as to build up in the metal strip 100 , downstream of the driving stand 260 in the production direction P, tensile stresses which enable a following second stand (first actively rolling stand) 230 and further following stands 240 ; 250 to achieve an effective degree of delamination.
  • the driving stand 260 motively in the right-hand or left-hand run.
  • the right-hand or the left-hand run is to relate to the working rolls of the driving stand 260 .
  • the supporting rolls of the driving stand 260 are operated in the correspondingly opposite direction of rotation or run as a generator.
  • these working rolls rotate in the opposite direction, since the force on the working roll arising from the metal strip 100 is higher than the drive force of the working rolls themselves. That is to say, the working rolls and, if appropriate, the assigned supporting rolls rotate in the same way as the corresponding rolls of an active roll stand 230 ; 240 ; 250 following in the production direction P.
  • the working rolls of the driving stand 260 in the same direction of rotation as the corresponding working rolls of a following actively rolling roll stand 230 ; 240 ; 250 . In this case, however, it is preferable if these are operated with a lower force than the following actively rolling roll stands 230 ; 240 ; 250 , in order to give the metal strip 100 inherent tensile stresses.
  • the supporting rolls of the driving stand 260 may be operated correspondingly. In this case, it is again possible to drive only a fraction of the rolls correspondingly.
  • the other rolls may be operated, for example, as a generator.
  • the slip between the metal strip 100 and a working roll of the driving stand 260 amounts to approximately 0.1% to 0.75%, preferably 1% to 2%, particularly 3% to 5% and, particularly preferably, 6% to 10%. That is to say, the outer circumferential speed of the working roll of the driving stand 260 is preferably slower by the amount of these percentages than the speed of the metal strip 100 . In further embodiments, however, no slip occurs.
  • a driven or generator operating mode, of whatever type, of the rolls in the driving stand 260 may be envisaged. It is possible, for example, to drive only the supporting rolls of the driving stand 260 and operate its working rolls as a generator. It is also possible to drive only those rolls of the driving stand 260 which are located on one side of the metal strip 100 and to run those on the other side as a generator.
  • the invention can be used in all rolling mills 1 . This applies both to rolling mills 1 newly to be designed and to already existing rolling mills 1 which are converted according to various embodiments. The same applies similarly to the method for operating the rolling mill 1 .
  • rolling mills 1 to be retrofitted the assembly 260 with the function of increasing the strip tension is demounted, and a roll stand of the tandem mill train 20 is operated according to various embodiments as a driving stand 260 .
  • the retrofitted rolling mill 1 thereby acquires shorter dimensions, with the result that, for example, other assemblies can be installed in the rolling mill 1 or rolling installation 1 .
  • the invention can be used both for continuously operated rolling mills 1 ( FIG. 2 ) and also for rolling mills 1 operated in a reversing mode (merely indicated in FIG. 2 ).
  • a reversing roll in mill 1 has, at its rear end lying opposite the metal-strip entry section 10 , a deflecting roller 210 and a coiler on which a coil 110 can be wound.
  • a last stand 250 of the tandem mill train 20 is activated or operated in the same way as a driving stand 260 according to various embodiments for a second run-through of the metal strip 100 .
  • the first stand 220 functioning as a driving stand 260 in the first run-through is then preferably activated as the last actively rolling roll stand 250 in the second run-through of the metal strip 100 .
  • a third run-through this is once again reversed.
  • both the first stand 220 and the last stand 250 can in each case be operated or used as a driving stand 260 and, for a following run-through of the metal strip 100 , also as the last actively rolling stand 250 .
  • first stand 220 / 250
  • last stand 250 / 220
  • driving stands 260 first stand
  • the invention can be used particularly in already existing cold-strip tandem rolling mills 1 which cover a broad bandwidth of a production spectrum with regard to an overall degree of delamination, or can be used particularly in those rolling mills 1 which have rolling power reserves (also for a maximum required delamination) in the individual roll stands. This then gives rise to a use of the first actively rolling roll stand 220 ; ( 250 ) as a driving stand 260 which does not carry out any essential delamination of the metal strip 100 . The possible pass reduction lost as a result is distributed to the remaining roll stands ( 220 ); 230 ; 240 ; 250 of the rolling mill 1 .
  • first stand 220 ( 250 ) being used as a driving stand 260 , a stabilization and equalization of the strip run due to decoupling from the uncoiler 270 ; improved strip guidance, particularly in the case of a wedge-shaped narrow strip; and an increase in the entering strip tension take place.
  • reference symbols in brackets refer to reversing operation of a reversing rolling mill 1 according to various embodiments
  • a possible pass reduction lost by the driving stand 260 can be compensated within the tandem mill train 20 , so that the tandem mill train 20 according to various embodiments or the rolling mill 1 according to various embodiments can implement the same thickness reductions as a tandem mill train 20 according to the prior art.
  • a shorter length of the overall mill is particularly advantageous in this case, since the assembly 260 with the function of increasing the strip tension (see FIG. 1 ) can be dispensed with. This also affords a lower outlay in terms of maintenance in addition to a lower energy consumption.
  • the first stand 220 in the production direction P of the metal strip 100 does not necessarily have to be designed or activated as a driving stand 260 after the metal strip 100 has entered the tandem mill train 20 . It is likewise possible to apply the invention to another roll stand or a plurality of roll stands 220 ; 230 ; 240 ; 250 of the rolling mill 1 . Thus, for example, it is possible, particularly in the case of a comparatively long tandem mill train 20 , also to design or activate as a driving stand 260 , in addition to the first stand 220 , a roll stand 230 ; 240 ; 250 which is arranged further to the rear in the production direction P.
  • the last roll stand 250 in the production direction P is driven, the outer circumferential speed of the working rolls of the last roll stand 250 , 260 (driving stand 260 ) being slightly higher than the speed of the metal strip 100 ; or the last stand 250 , 260 is driven with a higher drive power than a roll stand 220 ; 230 ; 240 arranged upstream in the production direction P.
  • the slip values given above are to be applied in reverse; hence, the outer circumferential speed of the working rolls of the last roll stand 250 , 260 is preferably higher by the amount of the percentage given above than the speed of the metal strip 100 in the “roll nip” of the last roll stand 250 , 260 .
  • the roll stands 220 ; 230 ; 240 ; 250 ; 260 of the tandem mill train 20 are depicted as four-high stands.
  • the invention is not to be restricted to four-high stands, but is to relate to all forms of construction of actively rolling roll stands 220 ; 230 ; 240 ; 250 ; 260 .
  • the invention can therefore also be applied, for example, to actively rolling two-high or six-high roll stands.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
US12/445,086 2006-10-12 2007-08-30 Rolling Mill and Method for Controlling a Rolling Mill Abandoned US20100050727A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006048427.4 2006-10-12
DE102006048427A DE102006048427B3 (de) 2006-10-12 2006-10-12 Walzanlage, nachgerüstete Walzanlage, Walzwerk oder Walzstraße, Verfahren zum Ansteuern einer Walzanlage und Verwendung eines ersten Gerüsts einer Walzanlage
PCT/EP2007/059066 WO2008043605A2 (de) 2006-10-12 2007-08-30 Walzanlage und verfahren zum steuern einer walzanlage

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US20100050727A1 true US20100050727A1 (en) 2010-03-04

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US (1) US20100050727A1 (de)
EP (1) EP2081703A2 (de)
CN (1) CN101522326B (de)
BR (1) BRPI0719132A2 (de)
DE (1) DE102006048427B3 (de)
RU (1) RU2460598C2 (de)
WO (1) WO2008043605A2 (de)

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US20100193623A1 (en) * 2007-07-05 2010-08-05 Berthold Botta Rolling of a strip in a rolling train using the last stand of the rolling train as a tension reducer
US20130283880A1 (en) * 2011-08-02 2013-10-31 Viswanathan Madhavan Universal dies of controllable curvature
US9638515B2 (en) 2010-12-01 2017-05-02 Primetals Technologies Germany Gmbh Method for actuating a tandem roll train, control and/or regulating device for a tandem roll train, machine-readable program code, storage medium and tandem roll train
US20200338608A1 (en) * 2018-01-10 2020-10-29 Nippon Steel Corporation Rolling method of shaped steel, production line of shaped steel, and production method of shaped steel
US11020780B2 (en) * 2016-01-27 2021-06-01 Jfe Steel Corporation Production equipment line for hot-rolled steel strip and production method for hot-rolled steel strip

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US9221088B2 (en) * 2009-04-21 2015-12-29 Fairmont Technologies, Llc Stretch roll forming
EP3883701B1 (de) 2018-11-23 2022-10-19 John Cockerill S.A. Flexible kaltwalzanlage und verfahren zur umwandlung davon
EP3791971A1 (de) * 2019-09-10 2021-03-17 Primetals Technologies Austria GmbH Kaltwalzen eines walzguts in einer walzstrasse mit mehreren walzgerüsten
DE102019131761A1 (de) * 2019-11-25 2021-05-27 Norbert Umlauf Walzlinie
DE102020209347B3 (de) 2020-07-24 2021-12-09 Technische Universität Bergakademie Freiberg Verfahren zum beschleunigten Herstellen von weichgeglühtem Bandstahl

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CN101522326A (zh) 2009-09-02
RU2460598C2 (ru) 2012-09-10
EP2081703A2 (de) 2009-07-29
BRPI0719132A2 (pt) 2014-02-04
DE102006048427B3 (de) 2008-05-21
CN101522326B (zh) 2011-09-07
RU2009117323A (ru) 2010-11-20
WO2008043605A3 (de) 2008-06-26

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