EP3284546A1 - Procédé de laminage d'un produit laminé dans un train de laminoir et train de laminoir - Google Patents

Procédé de laminage d'un produit laminé dans un train de laminoir et train de laminoir Download PDF

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Publication number
EP3284546A1
EP3284546A1 EP17183763.6A EP17183763A EP3284546A1 EP 3284546 A1 EP3284546 A1 EP 3284546A1 EP 17183763 A EP17183763 A EP 17183763A EP 3284546 A1 EP3284546 A1 EP 3284546A1
Authority
EP
European Patent Office
Prior art keywords
rolling
field induction
rolling stock
transverse field
cooling
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Withdrawn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
EP17183763.6A
Other languages
German (de)
English (en)
Inventor
Christoph Klein
Matthias Peters
Jürgen Seidel
Ron Beuter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102016224822.7A external-priority patent/DE102016224822A1/de
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3284546A1 publication Critical patent/EP3284546A1/fr
Withdrawn legal-status Critical Current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
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • 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
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • 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
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product

Definitions

  • the invention relates to a method for rolling a rolling stock in a rolling mill with at least two roll stands, in particular finishing stands or two roll stand groups, wherein the rolling stock is conveyed in a conveying direction. Furthermore, the invention comprises a rolling train.
  • Induction heaters within a finishing train for energetically efficient heating of the rolled strip between the finishing stands of a rolling train are known in the art.
  • EP 1 951 916 B1 such a solution is shown.
  • EP 2 624 974 B1 describes how a two-part cross-field induction heating (so-called inductor pair) between two rolling stands of a rolling mill is used. Both units of the inductor pair are positioned in a band edge orientation so that the most uniform possible temperature increase across the width is possible. By varying the overlap positions of the inductor loop ends relative to the band edge, a targeted temperature influencing over the bandwidth is also possible there.
  • the fact that two Querfeldinduktoren must find space between two scaffolding, the room is very cramped or it is a correspondingly large space required. Furthermore, such a double device is very expensive and expensive.
  • the invention is therefore based on the object to provide a method of the type mentioned, with which it is possible to achieve a homogenous temperature distribution over the width of the rolling stock - in particular behind the finishing train (finished strip temperature) - with a compact design of the induction heaters between the rolling stands , Furthermore, a corresponding rolling train is proposed, which has the appropriate advantages.
  • a one-piece transverse field induction heating is used, which is open at one end and the rolling stock at its top and bottom surrounds.
  • the cross-field induction heating is in this case preferably positioned so that its open end lies on the operating side of the rolling stands.
  • control or regulating device By means of the control or regulating device, it is possible in the case of width regions which have a temperature which are above a predetermined target value, to dispense more cooling medium via cooling nozzles corresponding to this width region.
  • the application of cooling medium via the cooling nozzles can take place in the conveying direction behind the transverse field induction heating, but before the rolling stock leaves the finishing train.
  • the application of cooling medium via the cooling nozzles can take place in the conveying direction before the transverse field induction heating.
  • a preferred option in this regard is that the application of cooling medium takes place via the cooling nozzles in the region of the segment cooling of a continuous casting plant, which is upstream of the rolling train in the conveying direction.
  • a process model can be used to control or regulate the activity of the individual cooling nozzles in dependence on predetermined and / or calculated and / or measured parameters.
  • At least two transverse field induction heaters are provided, which are each arranged between two adjacent rolling stands, wherein the respective width ranges of the rolling stock are heated differently with the at least two transverse field induction heaters.
  • transverse field induction heaters are used, each individually between two preferably adjacent ones Rolling stands are arranged, which produce a substantially uniform and symmetrical increase in temperature of the rolling stock across the width.
  • cross-field induction heaters are used, which are positioned at different positions in the direction transverse to the conveying direction.
  • transverse field induction heaters which are each arranged individually between two preferably adjacent rolling stands, results in the sum of a nearly uniform and symmetrical increase in strip temperature across the width.
  • the proposed method is preferably used in CSP plants or USP plants.
  • transverse field induction heaters No paired arrangement of the transverse field induction heaters is provided.
  • the only existing between two stands cross-inductor is preferably C-shaped, with its open side preferably facing the operating side.
  • the transverse field inductor is preferably inserted into the line after threading the strip into the following stand.
  • the proposed concept takes advantage of the fact that the strip edges are relatively cold before being heated (for example, they are strongly cooled by the scale scrubber).
  • the use of space-saving, low-cost transverse field induction heaters between the finishing stands of the rolling train is thus possible.
  • a larger space requirement and corresponding higher investment costs can be avoided, as it is disadvantageous when using transverse field inductor pairs between the finishing stands.
  • the cooling water is preferably applied before or after the transverse field inductor, but preferably before leaving the finishing train.
  • the water should not run into the inductor.
  • the strip edge cooling device can be arranged adjustable, which can be done symmetrically or asymmetrically to the center of the strip.
  • the cooling device can be adjustable over the entire width in certain areas (ie segmented switch-off) or can only act in the area of the strip edges.
  • the transverse field induction heating may consist of an inductor, in particular at low roll stand distances.
  • a transverse field induction heater consisting of several inductors is used, if more space z. B. between two roll stand groups or before a rolling mill.
  • FIG. 1 a cast rolling mill (CSP plant) is shown schematically in which a casting machine 18 pours a slab, which is passed through a roller hearth furnace 5, before being rolled in a rolling train 2 in the form of a finishing train to the belt 1.
  • the rolling stock or the strip 1 is conveyed in the conveying direction F.
  • the rolling train 2 has several finishing stands F1, F2, F3,..., Between which finishing line induction heaters 6 are arranged; equally located in front of the finishing train 2 such induction heating.
  • FIG. 2 shows.
  • a one-piece transverse field induction heating is therefore being considered.
  • FIG. 2 two rolling mills G i and G i + 1 succeeding one another in the conveying direction F can be seen, which roll the strip 1.
  • the inductor is connected on the drive side with the Induktorspeisung and on the operating side open (C-shaped configuration of Querfeldinduktors). After the threading of the strip into the following framework, the induction heating is moved from the waiting position next to the strip to the working position (transversely and horizontally to the conveying direction F).
  • FIG. 3 shows this one-piece transverse field induction heater 3 between two in the conveying direction F successive stands G i and G i + 1 in the Working position.
  • the transverse field induction heater 3 remains in a constant working position during the heating phase.
  • the open C side of the inductor on the operating side BS can be locked at the end of the lateral travel path in an inductor holder (anvil) 11.
  • the open inductor gap is marked 10.
  • a cross-field induction heater for heating a tape has an unfavorable uniformity of energy input across the bandwidth, as in US Pat FIG. 4 is illustrated.
  • uniform heating in the middle of the tape results in overheating of the band edge (see reference numeral 14 in FIG. 4 ).
  • Somewhat away from the strip edge (about 80 to 100 mm) less heating may occur (see reference numeral 13 in FIG FIG. 4 ).
  • these uneven energy inputs accumulate and lead to an uneven distribution of the temperature T across the width B of the finished product, if no appropriate countermeasures are taken.
  • FIG. 5 indicated where a band 1 seen in the conveying direction F (see FIG. 5a ) or in plan view (see FIG. 5b ) is shown.
  • a cooled region B cooling at the strip edge 15 which is specifically cooled in a specific manner.
  • a distributor pipe 16 supplies a number of cooling nozzles 4, which can selectively apply cooling medium to the area of the strip edge 15.
  • the cooled area B cooling preferably corresponds to the area at which the energy input into the band at the edge is greater than in the middle band area.
  • an adjustment 17 of the nozzle group in the width direction of the belt is possible, so that specific special width sections of the belt 1 can be cooled or the nozzle group can follow the belt edge.
  • the injection direction of the cooling nozzles 4 can be adjusted so that water can not reach the induction heating, but mainly in the direction of the belt edge 15 runs.
  • the strip edge cooling device is thus adjustable in width and can follow the strip edge symmetrically or asymmetrically to the middle.
  • the width adjustment is carried out by means of separate Breednverstell drivingen or by using an existing width adjustment, such as a side guide.
  • the application of the cooling medium takes place before and / or after the transverse field induction heating between the finishing stands or at any other position within the casting rolling mill, but preferably before leaving the belt from the finishing train.
  • the cooling device can act on a location (for example, on the belt edge) or installed over the entire width and be segmented switched off.
  • the cooling nozzles can be pressure and / or volume controlled. Also, individual nozzles can be completely shut off.
  • the strip edges are cold before reaching the first transverse field induction heating. Ie. due to heat radiation at the edge or due to water cooling (for example in the area of the scale scrubber), the strip edges may be colder. By this amount, the additional cooling does not need to cool the strip edges again.
  • the segment cooling of the continuous casting plant can also be included, as it is in FIG. 6 is illustrated.
  • the transverse field induction heaters can be reduced in the segment cooling, the amount of water so that there behind the continuous casting and attenuated before the finishing mill these areas are warmer.
  • FIG. 6 For this purpose, it can be seen that (starting from the center of the strip CL), the cooling of the slab 1 takes place through the cooling nozzles 4, which, however, are individually switched as a function of the temperature distribution over the bandwidth.
  • the cooling nozzles 4 ' are active, the cooling nozzle 4 "is only partially activated and the cooling nozzles 4'" are switched off.
  • FIG. 6 Below the slab 1 is in FIG. 6 the temperature profile over the bandwidth sketched, the temperature distribution TR behind the roller hearth furnace and the temperature distribution TG are shown behind the casting machine.
  • the temperature distribution TG in the edge region of the slab 1 results from a targeted reduced segment cooling or by switching off cooling nozzles in the edge region.
  • FIG. 7 For preferably used process model is on FIG. 7 pointed out, where the above procedure is illustrated.
  • the casting machine 18 with the subsequent strand guide and the segment cooling 19 can be seen here schematically. Behind the roller hearth furnace 5, the temperature distribution is detected by a temperature scanner 20. In the area of the finishing train 2, the transverse field induction heaters 3 are placed between the individual stands. Behind the last stand, another temperature detection takes place by means of a temperature scanner 21. The strip edge cooling 22 (according to the principle of Fig. 6 ) is placed in the area of the finishing train 2.
  • the one-piece cross-field induction heaters can be arranged from frame to frame, as shown in FIG. 8 is shown.
  • transverse field inductors 3 ', 3 " are positioned as band-belt actuators, so that, for example, with the transverse-field induction heating 3 'only the operating side BS and with the transverse field induction heating 3 "the drive side AS is overheated
  • the respective other sides heat depending on the position of the induction loop end 23, 24, the band correspondingly less, so that in sum of the two in FIG.
  • the cross-sectional induction heaters 3 ', 3 "between the three ganets G i , G i + 1 , G i + 2 (ie in the two resulting gantries) are almost equal in band temperature elevation
  • the partially asymmetric conditions on the band are on the frame G i + 1 by asymmetric control of the hydraulic adjustment (swing for Bandkeil- or band positional influence) and / or different activation of the work roll bending on the drive and operating side (for one-sided planarity influence or Bandpositionseinflung) balanced.
  • FIG. 8 is pointed in this regard to the ends 23 of the induction loop on the operator side and 24 on the drive side. Shown is also the displacement direction Q of the transverse field induction heaters 3 ', 3 ".
  • the process of deliberately cooling the strip at the various positions and positioning the one-piece cross-field induction heaters from frame to frame (preferably consisting of 2, 4 or 6 units) at an angle (see FIG. 8 ) can be operated in combination to equalize the finished strip temperatures across the width.
  • a narrow tape guide is provided (preferably less than +/- 20 mm, more preferably between 0 and 10 mm), including parallel or roller side guides can be provided before and / or within the finishing train.
  • a band edge position detection can be provided at at least one position in, in front of or behind the finishing line in order to be able to position the spray bars more precisely, depending on the detected position, over the band length of the band width.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP17183763.6A 2016-08-19 2017-07-28 Procédé de laminage d'un produit laminé dans un train de laminoir et train de laminoir Withdrawn EP3284546A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016215632 2016-08-19
DE102016224822.7A DE102016224822A1 (de) 2016-08-19 2016-12-13 Verfahren zum Walzen eines Walzguts in einer Walzstraße und Walzstraße

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EP3284546A1 true EP3284546A1 (fr) 2018-02-21

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EP17183763.6A Withdrawn EP3284546A1 (fr) 2016-08-19 2017-07-28 Procédé de laminage d'un produit laminé dans un train de laminoir et train de laminoir

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109406572A (zh) * 2018-12-10 2019-03-01 东北大学 一种金属带材横向感应加热实验装置及方法
AT522345A1 (de) * 2019-03-29 2020-10-15 Primetals Technologies Austria GmbH Heizungsvorrichtung zum induktiven Erhitzen eines Flachstahlstreifens in einem Warmwalzwerk

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238015A (ja) * 1984-05-10 1985-11-26 Mitsubishi Electric Corp 熱間圧延機における圧延温度・板形状制御装置
GB2163985A (en) * 1984-09-03 1986-03-12 Davy Mckee Temperature control of hot strip mill
WO2004103595A1 (fr) * 2003-05-23 2004-12-02 Thyssenkrupp Nirosta Gmbh Dispositif permettant de chauffer une bande metallique, et installations equipees de ce dispositif, servant a produire des bandes metalliques laminees a chaud
DE102006002505A1 (de) * 2005-10-31 2007-05-03 Sms Demag Ag Verfahren und Fertigwalzstraße zum Warmwalzen von Eingangsmaterial
WO2010083726A1 (fr) * 2009-01-21 2010-07-29 中冶赛迪工程技术股份有限公司 Procédé de commande de forme de bande ou brame laminée à chaud et dispositif associé
DE102011006357A1 (de) * 2010-10-08 2012-04-12 Sms Siemag Ag Walzstraße zum Herstellen eines Metallbandes und Verfahren zur Herstellung einer Walzstraße
WO2014135710A1 (fr) 2013-03-08 2014-09-12 Sms Siemag Ag Procédé de production d'une bande métallique au moyen de cylindres de coulée

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238015A (ja) * 1984-05-10 1985-11-26 Mitsubishi Electric Corp 熱間圧延機における圧延温度・板形状制御装置
GB2163985A (en) * 1984-09-03 1986-03-12 Davy Mckee Temperature control of hot strip mill
WO2004103595A1 (fr) * 2003-05-23 2004-12-02 Thyssenkrupp Nirosta Gmbh Dispositif permettant de chauffer une bande metallique, et installations equipees de ce dispositif, servant a produire des bandes metalliques laminees a chaud
DE102006002505A1 (de) * 2005-10-31 2007-05-03 Sms Demag Ag Verfahren und Fertigwalzstraße zum Warmwalzen von Eingangsmaterial
EP1951916B1 (fr) 2005-10-31 2012-12-19 SMS Siemag AG Procede et train de laminoir de finition pour laminer a chaud un materiau de depart
WO2010083726A1 (fr) * 2009-01-21 2010-07-29 中冶赛迪工程技术股份有限公司 Procédé de commande de forme de bande ou brame laminée à chaud et dispositif associé
DE102011006357A1 (de) * 2010-10-08 2012-04-12 Sms Siemag Ag Walzstraße zum Herstellen eines Metallbandes und Verfahren zur Herstellung einer Walzstraße
EP2624974B1 (fr) 2010-10-08 2015-03-04 SMS Siemag AG Train de laminage pour la fabrication d'une bande metallique et procede de fabrication d'un train de laminage
WO2014135710A1 (fr) 2013-03-08 2014-09-12 Sms Siemag Ag Procédé de production d'une bande métallique au moyen de cylindres de coulée

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109406572A (zh) * 2018-12-10 2019-03-01 东北大学 一种金属带材横向感应加热实验装置及方法
AT522345A1 (de) * 2019-03-29 2020-10-15 Primetals Technologies Austria GmbH Heizungsvorrichtung zum induktiven Erhitzen eines Flachstahlstreifens in einem Warmwalzwerk
AT522345B1 (de) * 2019-03-29 2020-11-15 Primetals Technologies Austria GmbH Heizungsvorrichtung zum induktiven Erhitzen eines Flachstahlstreifens in einem Warmwalzwerk
US12090535B2 (en) 2019-03-29 2024-09-17 Primetals Technologies Austria GmbH Heating device for the inductive heating of a flat steel strip in a hot rolling mill

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