[go: up one dir, main page]

EP2353742A1 - Laminage à chaud destiné au laminage de bande de chaleur, procédé de fonctionnement d'un laminage à chaud destiné au laminage de bande de chaleur, dispositif de commande et/ou de réglage - Google Patents

Laminage à chaud destiné au laminage de bande de chaleur, procédé de fonctionnement d'un laminage à chaud destiné au laminage de bande de chaleur, dispositif de commande et/ou de réglage Download PDF

Info

Publication number
EP2353742A1
EP2353742A1 EP10152741A EP10152741A EP2353742A1 EP 2353742 A1 EP2353742 A1 EP 2353742A1 EP 10152741 A EP10152741 A EP 10152741A EP 10152741 A EP10152741 A EP 10152741A EP 2353742 A1 EP2353742 A1 EP 2353742A1
Authority
EP
European Patent Office
Prior art keywords
cooling section
drive means
tape
mass flow
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Withdrawn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
EP10152741A
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Felkl
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP10152741A priority Critical patent/EP2353742A1/fr
Priority to EP10803255A priority patent/EP2531309A2/fr
Priority to PCT/EP2010/070916 priority patent/WO2011095265A2/fr
Priority to CN2010800631225A priority patent/CN102740989A/zh
Publication of EP2353742A1 publication Critical patent/EP2353742A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5735—Details
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • C21D9/5735—Details
    • C21D9/5737—Rolls; Drums; Roll arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B21B15/005—Lubricating, cooling or heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/02—Tension
    • 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
    • B21B37/76—Cooling control on the run-out table

Definitions

  • the invention relates to a hot rolling mill for rolling hot strip, comprising a cooling section for cooling the hot strip. Furthermore, the invention relates to a method for operating a hot rolling line for rolling hot strip, wherein the hot strip is rolled by means of at least one roll stand, wherein the rolled strip passes through a cooling section, wherein the cooled by means of the cooling section hot strip is wound on a reel. Moreover, the invention relates to a control and / or regulating device for a hot rolling mill.
  • the patent application relates to the technical field of hot rolling technology.
  • hot rolling in particular of metal strips, a solid metal piece of liquid metal is produced by means of any casting process, for example a slab which is processed by further processing, in particular rolling and cooling, to form a hot strip end product which is wound up at the end of the hot rolling train to form a hot strip bundle.
  • the hot rolling process essentially determines the geometric dimensions of the hot strip and its material properties.
  • the temperature of the metal strip changes during the hot rolling process and ranges from about 500 ° C to 600 ° C in the reel, so-called coiler temperature, at the end of the hot rolling mill to temperatures of about 1300 ° C to 1400 ° C in mass flow direction of the reel upstream areas of the hot rolling mill.
  • Modern material grades, especially steel grades, are produced by sophisticated cooling strategies.
  • the microstructure is depends on a specific cooling process.
  • Examples of such cooling methods of hot strip are, for example, in EP 1244816-B1 disclosed as well as in DE 10129565 B4 , Such methods make it possible to adjust the material properties of the hot strip in a desired manner with high accuracy.
  • microstructural inhomogeneities of the hot strip can lead to serious microstructural inhomogeneities of the hot strip.
  • flow resistance fluctuations are connected, which in turn lead to barely controllable thickness errors in a subsequent cold rolling of the produced hot strip.
  • Microstructure inhomogeneities or microstructural disturbances in the material structure which occur at a frequency of more than one microstructure disturbance per meter of hot strip, are no longer manageable under production-oriented rolling speeds in the cold rolling mill by means of the actuators available on the market.
  • Such microstructural disturbances occur increasingly in the area of the beginning of the tape, also called tape head, and the end of the tape, also called tape foot.
  • the object of the invention is to increase the quality of a manufactured hot strip, in particular to reduce microstructural inhomogeneities of the hot strip in the region of the band foot and / or the beginning of the strip.
  • An apparatus part of the object is achieved by a hot rolling mill of the type mentioned, wherein at least one in mass flow direction after the start of the cooling section and in Mass flow direction arranged before the end of the cooling section belt drive device is present, by means of a, in particular different from zero, tensile stress of the hot strip is adjustable.
  • belt drive device the term belt influencing device can be used. Essential for this type of device is that by means of this a tensile stress on the band can be acted upon.
  • tape drive means is meant any device which is capable of tensioning the tape, i. with a tension in the direction of transport of the metal strip to apply.
  • the inventor has recognized that the structural inhomogeneities of the strip beginning region and the strip end region are due to their draft-free state when passing through the cooling section. Because the lack of tension during threading and / or unthreading of the hot strip leads to unevenness of the strip are present, which increase by cooling in the cooling section, which leads to lowering and lifting of the metal strip, which cause an uneven deflection of the cooling water. Thus, for example, the water of the cooling section collects in depressions of the band, while on the other hand, the water flows quickly away from the elevations of the band. The consequent unevenness of the cooling leads to the above structural inhomogeneities. These can be reduced by putting a tension-free band area in the cooling section under tension during threading.
  • the hot rolling mill by providing at least one belt drive device between the beginning of the cooling section and the end of the cooling section, by means of which a strip section of the hot strip passing through the cooling section can be subjected to a tensile stress.
  • the start of the cooling section and the end of the cooling section is to be defined with regard to the mass flow direction of the rolling train. That is, where the tape enters the cooling section is the beginning of the cooling section; there where the tape runs out of the cooling section is the end of the cooling section.
  • the length of the band which is subject to error as a result of the structure inhomogeneities, depends on which distance, for example, the beginning of the tape is to be moved in the cooling section before a tension for the band can be established.
  • the tape undergoes, during threading, that distance between the last roll stand and driver roll set prior to the reel in draft-free condition, i. in particular, the cooling section.
  • This effective length of the tensionless cooled strip portion ie the strip portion which passes through the cooling line without tension at the beginning and end of the strip, can be significantly reduced by the hot rolling mill according to the invention, whereby the above-described, previously existing structure inhomogeneities can be avoided for a considerable band share.
  • the thickness errors during cold rolling can be largely avoided, whereby the caused by the thickness error scrap accumulation is also greatly reduced.
  • a plurality of belt drive means is provided. These are arranged between the beginning of the cooling section and the end of the cooling section. Since the maximum distance between two devices which are able to build up a tensile stress determines the band region - both at the beginning of the strip and at the end of the strip - which passes through the cooling section without tension, it is advantageous to shorten this distance by using a plurality of belt drive devices . By providing a plurality of belt drive means between the beginning and the end of the cooling section, this shortening can be achieved. Because the more belt drive devices are provided and the smaller the maximum distance between two adjacent belt drive devices, the lower the proportion of the belt which passes through the cooling section without tension. By virtue of a correspondingly high number of belt drive devices, it is therefore possible to reduce the band gap passing through the cooling section so that this proportion is almost negligible in relation to the total length of the hot strip.
  • two adjacent belt drivers are spaced more than 10 meters and less than 70 meters, more preferably more than 20 meters and less than 50 meters.
  • Such an arrangement is advantageous in that the band portion, which passes through the cooling section without tension, on the one hand greatly reduced.
  • the number of required tape drive means is not so high that here a plurality of, in particular more than ten, tape drive means must be provided, which reduce the thickness errors during cold rolling in the band foot area and in the tape head area. At the intervals mentioned above, therefore, the effect is good and the technical effort, in particular for retrofitting the belt drive devices, limited for the operator of the hot rolling mill.
  • the cooling section in the mass flow direction at least two spaced-apart cooling segments, wherein between the cooling segments, a belt drive device is arranged.
  • the belt drive devices arranged between the beginning and the end of the cooling section are cooled with coolant from the cooling section, in particular continuously. Because this ensures that the respective belt drive device does not overheat during adjustment of the tension. Because it should be remembered that hot strip in the cooling section depending on the location in the cooling section can still have a significant temperature, which is a burden on the belt drive device.
  • the cooling section is preceded and / or arranged downstream of at least one further belt drive device in the direction of mass flow. It is particularly advantageous if the beginning of the cooling section directly upstream of a belt drive means and the end of the cooling section is immediately downstream of a belt drive means, wherein the respective belt drive means is configured such that the tape drive means continuous belt can be acted upon with a tensile stress.
  • An immediately preceding the cooling section in the direction of mass flow belt drive device has the advantage that when the hot strip from the rolling train, especially if the end of the tape has left the last stand of the rolling mill, a tension for the band can be maintained throughout the cooling section. This is namely possible as long as the end of the tape has passed the immediately preceding the cooling section upstream tape drive means.
  • An immediately downstream of the cooling section in the direction of mass flow belt drive device has the advantage that during the threading of the hot strip early in the entire cooling section, a tensile stress is built, although the band may not yet reached the reel. As a result, the proportion of the strip, which has structure-inhomogeneities due to the draft-free passage of the cooling section, significantly reduced.
  • At least one belt drive device comprises a set of driver rollers.
  • all the tape drive means are each formed as a set of driver rollers with associated drive means.
  • driver rollers as a belt drive device seems particularly suitable because they do not have a large footprint and, for example, can be easily arranged between the adjacent cooling segments of the cooling section.
  • Driver roller sets are well suited for applying tension to a belt.
  • a procedural part of the object is achieved by a method of the type mentioned above, wherein at least in the presence of a free end of the hot strip between the reel and upstream of the cooling section in the mass flow direction upstream rolling stand at least one arranged between the beginning and the end of the cooling section belt drive means operated in such a way is that by means of this a tensile stress on a section of the hot strip passing through the cooling section is acted upon.
  • a plurality of belt drive means is arranged between the beginning of the cooling section and the end of the cooling section, wherein during the threading of a belt into the rolling mill, a first belt drive device is brought into engagement with the belt after the belt head has passed the first belt drive device, and the first tape drive means is disengaged from the tape after the tape head has passed a second tape drive means following in the mass flow direction.
  • the first tape drive means is disengaged while the second tape drive means is brought into engagement with the tape.
  • This has the advantage that the tension - with the exception of the transfer period from the first belt drive device to the second belt drive device - is essentially always provided by only one belt drive device. This avoids a dynamic load distribution of the tape drive means which would always have to be adjusted if additional tape drive means were brought into engagement with the tape. This is technically complex and requires a higher error rate.
  • a tape drive means is considered to be “engaged” if it fulfills a tape driver function, ie still able to build a tension for the band.
  • engaging is meant the process in which a tape drive means has an initial state in which it is not “engaged” with the tape and is transferred to a final state in which it "engages” the tape is. This applies analogously to the formulation “disengage” or a tape drive device “disengage”.
  • first belt drive device and the second belt drive device are operated such that they are simultaneously in engagement with the belt, at least for a limited period of time. This is particularly important when transferring the tensile structure from the first belt drive device to the second belt drive device. Because so a desired tensile stress can be maintained upon transfer of the tensile structure from the first belt drive means to the second belt drive means, i. the belt is not draft-free during the transfer of the tensile structure from the first belt drive device to the second belt drive device.
  • a preferred variant is that the first belt drive means so out of engagement with the belt and the second belt drive means are brought into engagement with the belt, that during the transfer of tensile structure from the first belt drive means to the second belt drive means a tensile stress of the belt already Beginning of the transfer by means of the first belt drive device under train set band area always greater than zero in amount, preferably greater than a predetermined threshold is.
  • the tensile stress of the belt area set under tension by means of the first belt drive device is constant during the transfer.
  • a plurality of belt drive means is arranged between the start of the cooling section and the end of the cooling section, during the Ausfädelns a tape from the rolling train, a first belt drive means is brought into engagement with the tape before the tape end has passed this first belt drive means , and a second mass-flow direction-following second tape drive means is brought into engagement with the tape before the tape end has passed the first tape drive means.
  • the at least one belt drive device in particular the plurality of belt drive devices, is brought out of engagement with the belt during stationary operation of the mill train.
  • stationary operation of the mill train i. during a substantially error-free operation, which does not involve threading and unthreading the strip from the mill train, it is not necessary to operate the at least one tape drive means, since in this case the strip is tensioned in the cooling section and possibly occurring in a conventional manner Microstructure inhomogeneities are usually not caused by the absence of a band tension in the cooling section.
  • the invention also extends to a data carrier with a machine-readable program code for a control and / or regulating device according to claim 15, wherein the program code comprises control commands, which causes the control and / or regulating device to carry out the method according to one of claims 8 to 14 ,
  • the invention also extends to a machine-readable program code for a control and / or regulating device according to claim 15, wherein the program code comprises control commands, which causes the control and / or regulating device to carry out the method according to one of claims 8 to 14.
  • the invention can be used for both one way hot rolling mills and reversing hot rolling mills.
  • FIG. 1 shows a schematic representation of a hot rolling line 1, by means of which metallic hot strip B can be produced.
  • the hot rolling mill 1 is supplied to warm rolling stock, for example. From a casting device, not shown. Alternatively, heated slabs can be fed to the rolling train, which are rolled.
  • the rolling train 1 comprises a finishing train 2 for finish rolling of the hot strip B to its target outlet thickness.
  • the finishing train 2 includes rolling stands, from which in the mass flow direction last mill stand 3 in FIG. 1 is shown.
  • a finishing train comprises three scaffolds or more. In particular, this may be four, five or six-stand construction.
  • the rolling train may also comprise only a single or two rolling stands.
  • the number of existing stands is of minor importance.
  • a rolling train comprises at least one rolling stand.
  • the finishing train 2 is followed by a cooling section 4 in the present hot rolling mill 1, by means of which the mechanical properties, such as phase components and microstructure of the strip B, are set.
  • the cooled hot strip B After the cooling section 4, the cooled hot strip B reaches a reel 6, by means of which the hot strip B is wound up into a hot strip collar.
  • the hot rolling mill 1 further shows a plurality of sets of driver rollers 7, 8, 9, 10 and 11, respectively, which are arranged between the last rolling stand 3 of the finishing train 2 and the reel 6. These are used to apply the hot strip B as long as possible during the threading and / or unthreading of the hot strip B with a train greater than zero over the widest possible parts in the cooling section 4.
  • the driver roller sets 7, 8, 9, 10 and 11 shorten that portion of the belt which passes the cooling section in the tension-free state. This improves the quality, in particular the microstructure, of the produced strip, since thus the strip share at the beginning of the strip and at the strip base, which is cooled without tension in the cooling section and thus has increased structure inhomogeneities, is reduced.
  • FIG. 1 a driver roller pair 10 arranged directly in the mass flow direction in front of the cooling section 4 and a driver roller pair 11 arranged immediately downstream of the cooling section in the mass flow direction
  • FIG. 1 a first driver roller pair 7, a second driver roller pair 8 and a third driver roller pair 9, which is arranged between the beginning and end of the cooling section 4.
  • the number of driver roles between the beginning and end of the cooling section is relatively freely selectable by the skilled person. This is a cost / benefit analysis, as the installation of a pair of driver rolls causes a certain expense. In return, however, the quality of the band is increased. The more pairs of driver rollers are used and the smaller their spacing, the lower the proportion of the band which has microstructural inhomogeneities.
  • the cooling section 4 is divided into a plurality of cooling segments 5, which are operable independently of each other. Between the respective cooling segments 5, a set of driver rollers 7, 8 and 9, in the present case, a driver roller pair 7, 8 and 9 respectively. Immediately in the mass flow direction before the cooling section and immediately in the mass flow direction after the cooling section, a further pair of drive rollers 10 and 11 is arranged in each case.
  • the pairs of driver rollers 7, 8, 9, 10 and 11 are independently operable. In stationary operation of the hot rolling mill, the pairs of driver rollers 7, 8, 9, 10 and 11 are preferably out of engagement with the belt B.
  • a further pair of driver rollers 10 and 11 is arranged in each case. This is particularly advantageous because in this way the band portion, which passes through the cooling section 4 at the beginning and end of the production process without tension, can be further shortened.
  • the spacing of adjacent pairs of driver rollers e.g. the first driver roller pair 9 from the second driver roller pair 10 is preferably between 20 meters to 50 meters.
  • the spacing of adjacent pairs of driver rollers may be variable. This allows for local features, e.g. structurally, to enter along the rolling mill.
  • the distance between adjacent pairs of driver rollers is equidistant. In the exemplary embodiment, the distance between adjacent driver rollers should each be 40 meters. As a result, the best possible cost / benefit ratio is achieved for commonly used cooling sections achieved.
  • the driver roller pair 7, 8, 9, 10, 11 are operatively connected to a control and / or regulating device 20.
  • the control and / or regulating device is prepared for carrying out an embodiment of the method according to the invention, for example 3 and FIG. 4 realized embodiments.
  • the control and / or regulating device 20 is supplied with machine-readable program code 22 and preferably stored in memory-programmed form.
  • the program code 22 includes control commands which, when executed, cause the control and / or regulating device to carry out the method.
  • the transmission of the program code 22 to the control and / or regulating device 20 can take place, for example, via a data carrier 21, for example a CD, DVD or a flash memory, or via a network to which the control and / or regulating device 20 is connected is.
  • FIG. 2 shows a similar hot rolling mill like FIG. 1 ,
  • the hot rolling mill according to FIG. 2 differs only from the in FIG. 1 shown that the cooling section 4 not in spaced cooling segments 5, see FIG. 1 , is divided. Rather, the cooling section 4 is formed continuously.
  • the plurality of pairs of driver rollers 7, 8 and 9, respectively are exposed to continuous cooling by the cooling section 4, which may thus be - if desired - continuously in engagement with the hot strip B to be cooled.
  • FIG. 3 shows a possible advantageous operation of the drive roller pairs when threading the tape in the rolling train.
  • all pairs of driver rollers are open, ie the tape head can run in without hitting the outer surface of the driver rollers.
  • the process step 100 indicates that the strip is subjected to a threading operation in the rolling train.
  • the belt thus passes in the mass flow direction one unit after another in the direction of the reel.
  • a first pair of drive rollers see FIG. 1 or 2 driver roller pair 10, arranged.
  • a method step 101 it is checked whether the beginning of the tape has already reached this pair of driver rollers. If this is not the case, the event "Passing the beginning of the tape” will continue to be checked for the next pair of driver rollers to be traversed by the tape head. This can be done, for example, by means of a suitable measuring device and / or a tape tracking calculation.
  • this pair of driver rollers is brought into engagement with the tape and a set tension for the tape portion between the last stand of the finishing train and the pair of driver rollers is set immediately before the cooling section.
  • a method step 103 it is checked whether the beginning of the tape already contains the following pair of driver rollers, that is to say the pair of driver rollers 7, following the pair of driver rollers arranged immediately before the cooling section FIG. 1 respectively. FIG. 2 , happened. If this is not the case, it is checked further for occurrence of this event.
  • the driver roller pair 10 is brought out of engagement with the belt before the cooling section. This is done in a step 106.
  • the structure of the tension for the arranged between the finishing line and cooling section band share is thus transferred from the pair of drive rollers immediately before the cooling section on the first pair of drive rollers in the cooling section, ie between the beginning and end of the cooling section.
  • the transfer of the tensile stress, ie the pairs of driver rollers involved in the transfer of the tensile stress controlled such that the tension of the band portion between the last frame of the finishing train and the immediately before the cooling section arranged driver roller set remains substantially constant.
  • This transfer of the drive train of drive roller pairs is successively carried out for adjacent mass flow direction consecutive driver roller pairs, i. From the driver roller pair 7 to the driver roller pair 8, from the driver roller pair 8 to the driver roller pair 9 and from the driver roller pair 9 to the driver roller pair 11.
  • the transfer of the tensile structure from a pair of driver rollers on the next in the mass flow direction driver roller pair is always then after the beginning of each band in the mass flow direction next driver roller pair happened.
  • a method step 107 it is checked whether the beginning of the strip in the mass flow direction or transport direction last pair of driver rollers, ie according to FIG. 1 respectively.
  • FIG. 2 the driver roller pair 11, has happened. If this is not the case, continue as described above.
  • the last driver roller pair is the driver roller pair, which is located immediately behind the cooling section in the mass flow direction.
  • Whether the belt has already reached the reel is checked in a method step 108.
  • the last pair of drive rollers and the reel are operated in such a way that the tension of the tape part already under tension and passing through the cooling section is transferred from the last pair of drive rollers to the transfer unit
  • the reel is always greater in magnitude than zero, preferably constant and equal to the tension value set prior to the transfer of the tensile structure to the reel.
  • the last pair of driver rolls is disengaged in a method step 109.
  • the rolling train is then in stationary operation. All driver roles are then disengaged in the present example.
  • FIG. 4 shows an exemplary procedure for a Ausfädelvorgang for in FIG. 1 respectively.
  • FIG. 2 shown hot rolling mills. Also in this case it is assumed that at the beginning of the threading all pairs of driver rolls according to FIG. 1 respectively. FIG. 2 are out of engagement with the tape.
  • a process step 200 the threading of the strip from the hot rolling line is started, i. There is a free end of the tape, especially band foot, in the rolling mill before.
  • a method step 201 it is checked whether the belt foot has passed a predetermined reference point before the last rolling stand.
  • This reference point can be arranged between the last in the mass flow direction and injured framework of the finishing train, or even further forward, possibly even in the direction of mass flow in front of the first stand of the finishing train. As long as the band foot has not passed the given reference point, the test will continue.
  • the reference point is preferably to be determined such that it is ensured that when transferring the tensile structure, the tensile stress does not become zero, i. a corresponding reaction time for the system is taken into account.
  • the pair of driver rollers arranged directly in front of the cooling section is brought into engagement with the band in a method step 202 so that the construction of a tensile stress in the cooling section can be adopted with this at the latest the strip foot emerges from the last mill stand of the finishing train.
  • a method step 203 it is checked whether the belt foot has passed a predetermined reference point in the direction of mass flow in front of the pair of driver rollers arranged immediately before the cooling section.
  • a method step 204 the pair of driver rollers following the pair of driver rollers located immediately in front of the cooling section is then brought into engagement with the band.
  • this corresponds to the first driver roller pair, which is arranged in the mass flow direction between the beginning and end of the cooling section.
  • the first pair of driver rollers is brought into engagement with the belt in such a manner that it does not exceed the upstream of the mass flow direction at the latest when the belt foot exits
  • Driver roller pair has built a tension for that part of the belt, which extends between the first pair of drive rollers and the end of the cooling section.
  • either the pair of driver rollers arranged immediately in front of the cooling section can be opened.
  • the driver roller pair arranged immediately in front of the cooling section can remain closed until the belt foot has passed through it. Between these boundary conditions can be varied as desired.
  • the upstream driver roll set can also be opened just before passing the belt foot to improve the tape run.
  • the method described for the pair of driver rollers arranged immediately in front of the cooling section and the first pair of driver rollers between the beginning and the end of the cooling section is applied successively and analogously to the following pairs of driver rollers.
  • the driver roller pair adjacent in the mass flow direction is always closed before the belt foot has passed upstream and adjacent driver roller pairs in the mass flow direction. This happens as long as, for example, the last pair of driver rollers, ie according to 1 and FIG. 2 the pair of driver rollers immediately behind the cooling section, is engaged.
  • a method step 205 it is checked whether the belt foot has passed a predetermined, in mass flow direction the last pair of drive rollers upstream reference point. Depending on the control strategy, then the last driver roll pair can be opened or disengaged, closed, i. be kept in operation or otherwise operated.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
EP10152741A 2010-02-05 2010-02-05 Laminage à chaud destiné au laminage de bande de chaleur, procédé de fonctionnement d'un laminage à chaud destiné au laminage de bande de chaleur, dispositif de commande et/ou de réglage Withdrawn EP2353742A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP10152741A EP2353742A1 (fr) 2010-02-05 2010-02-05 Laminage à chaud destiné au laminage de bande de chaleur, procédé de fonctionnement d'un laminage à chaud destiné au laminage de bande de chaleur, dispositif de commande et/ou de réglage
EP10803255A EP2531309A2 (fr) 2010-02-05 2010-12-30 Train de laminage à chaud pour le laminage d'un feuillard à chaud, procédé pour faire fonctionner un train de laminage à chaud pour le laminage d'un feuillard à chaud, ainsi que dispositif de commande et/ou de régulation
PCT/EP2010/070916 WO2011095265A2 (fr) 2010-02-05 2010-12-30 Train de laminage à chaud pour le laminage d'un feuillard à chaud, procédé pour faire fonctionner un train de laminage à chaud pour le laminage d'un feuillard à chaud, ainsi que dispositif de commande et/ou de régulation
CN2010800631225A CN102740989A (zh) 2010-02-05 2010-12-30 用于轧制热轧带材的热轧机，用于轧制热轧带材的热轧机的操作方法，控制和/或调节装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10152741A EP2353742A1 (fr) 2010-02-05 2010-02-05 Laminage à chaud destiné au laminage de bande de chaleur, procédé de fonctionnement d'un laminage à chaud destiné au laminage de bande de chaleur, dispositif de commande et/ou de réglage

Publications (1)

Publication Number Publication Date
EP2353742A1 true EP2353742A1 (fr) 2011-08-10

Family

ID=42289476

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10152741A Withdrawn EP2353742A1 (fr) 2010-02-05 2010-02-05 Laminage à chaud destiné au laminage de bande de chaleur, procédé de fonctionnement d'un laminage à chaud destiné au laminage de bande de chaleur, dispositif de commande et/ou de réglage
EP10803255A Withdrawn EP2531309A2 (fr) 2010-02-05 2010-12-30 Train de laminage à chaud pour le laminage d'un feuillard à chaud, procédé pour faire fonctionner un train de laminage à chaud pour le laminage d'un feuillard à chaud, ainsi que dispositif de commande et/ou de régulation

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10803255A Withdrawn EP2531309A2 (fr) 2010-02-05 2010-12-30 Train de laminage à chaud pour le laminage d'un feuillard à chaud, procédé pour faire fonctionner un train de laminage à chaud pour le laminage d'un feuillard à chaud, ainsi que dispositif de commande et/ou de régulation

Country Status (3)

Country Link
EP (2) EP2353742A1 (fr)
CN (1) CN102740989A (fr)
WO (1) WO2011095265A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105234184A (zh) * 2015-11-10 2016-01-13 内蒙古包钢钢联股份有限公司 一种串列式轧机堆钢保护方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118244A1 (de) 2017-08-10 2019-02-14 Thyssenkrupp Ag Vorrichtung und Verfahren zur Herstellung eines Warmbands
CN115161467B (zh) * 2022-06-21 2023-08-04 西门子（中国）有限公司 加热炉的炉底辊道控制方法及装置、变频器、设备、介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596615A (en) * 1984-02-20 1986-06-24 Nippon Steel Corporation Method of cooling hot steel plates
DE10129565A1 (de) 2001-06-20 2003-01-09 Siemens Ag Kühlverfahren für ein warmgewalztes Walzgut und hiermit korrespondierendes Kühlstreckenmodell
WO2003045599A1 (fr) * 2001-11-15 2003-06-05 Siemens Aktiengesellschaft Procede pour commander un train finisseur monte en amont d'une section de refroidissement et concu pour laminer des feuillards metalliques a chaud
EP1244816B1 (fr) 1999-12-27 2004-03-10 Siemens Aktiengesellschaft Procede et commande et/ou de reglage de la section de refroidissement d'un train a feuillards a chaud destine au laminage de bandes metalliques et dispositif associe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10163070A1 (de) * 2001-12-20 2003-07-03 Sms Demag Ag Verfahren und Einrichtung zum kontrollierten Richten und Kühlen von aus einem Warmband-Walzwerk auslaufendem breiten Metallband, insbesondere von Stahlband oder Blech
KR101444564B1 (ko) * 2009-10-07 2014-09-24 신닛테츠스미킨 카부시키카이샤 열연의 냉각 장치 및 냉각 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596615A (en) * 1984-02-20 1986-06-24 Nippon Steel Corporation Method of cooling hot steel plates
EP1244816B1 (fr) 1999-12-27 2004-03-10 Siemens Aktiengesellschaft Procede et commande et/ou de reglage de la section de refroidissement d'un train a feuillards a chaud destine au laminage de bandes metalliques et dispositif associe
DE10129565A1 (de) 2001-06-20 2003-01-09 Siemens Ag Kühlverfahren für ein warmgewalztes Walzgut und hiermit korrespondierendes Kühlstreckenmodell
WO2003045599A1 (fr) * 2001-11-15 2003-06-05 Siemens Aktiengesellschaft Procede pour commander un train finisseur monte en amont d'une section de refroidissement et concu pour laminer des feuillards metalliques a chaud

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AUZINGER D ET AL: "NEUES PROZESSOPTIMIERUNGS- UND -STEUERUNGSSYSTEM FUER EINE LAMINARKUEHLSTRECKE", STAHL UND EISEN, VERLAG STAHLEISEN, DUSSELDORF, DE, vol. 116, no. 11, 11 November 1996 (1996-11-11), pages 115 - 120,163, XP000639887, ISSN: 0340-4803 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105234184A (zh) * 2015-11-10 2016-01-13 内蒙古包钢钢联股份有限公司 一种串列式轧机堆钢保护方法

Also Published As

Publication number Publication date
WO2011095265A3 (fr) 2012-01-12
CN102740989A (zh) 2012-10-17
WO2011095265A2 (fr) 2011-08-11
EP2531309A2 (fr) 2012-12-12

Similar Documents

Publication Publication Date Title
EP2195127B1 (fr) Procédé d'exploitation permettant d'introduire un produit à laminer dans une cage d'un laminoir, dispositif de commande, support de données et laminoir conçu pour laminer un produit à laminer en forme de bande
EP3430175B1 (fr) Procédé de laminage et/ou de traitement thermique d'une bande métallique
DE19540978A1 (de) Produktionsanlage zum kontinuierlichen- oder diskontinuierlichen Auswalzen von Warmband
WO2009016086A1 (fr) Procédé de réglage d'un état d'un produit à laminer, en particulier d'un ruban de préparation
DE102006047718A1 (de) Verfahren zur Nachverfolgung des physikalischen Zustands eines Warmblechs oder Warmbands im Rahmen der Steuerung einer Grobblechwalzstraße zur Bearbeitung eines Warmblechs oder Warmbands
EP3341142B1 (fr) Procédé de fonctionnement d'une installation fonctionnant suivant le concept csp (compact strip production)
EP0121148A1 (fr) Procédé pour la fabrication de feuillard à chaud avec section et planéité de bande de haute qualité
DE19514475A1 (de) Steckel-Walzwerk
EP3210681A1 (fr) Dispositif et procédé de laminage de matériau en bande à épaisseur variable
EP2741870B1 (fr) Installation de laminage et procédé de laminage
EP1955787A1 (fr) Procédé et dispositif destinés à l'étirement de bandes de métal
EP2353742A1 (fr) Laminage à chaud destiné au laminage de bande de chaleur, procédé de fonctionnement d'un laminage à chaud destiné au laminage de bande de chaleur, dispositif de commande et/ou de réglage
EP2898963A1 (fr) Section de refroidissement avec refroidissement double à une valeur de consigne respective
EP4281229A1 (fr) Utilisations de dispositifs de laminage à froid et procédé de laminage à froid contrôlé de feuille d'aluminium
EP0752285A2 (fr) Procédé et dispositif de laminage de bandes ayant transversalement des irrégularités d'épaisseur et/ou de longeur
DE102015223600A1 (de) Verfahren zum Herstellen eines metallischen Bandes durch Endloswalzen
DE3401894A1 (de) Verfahren zum herstellen von walzband mit hoher bandprofil- und bandplanheitsguete
EP4061552B1 (fr) Procédé, dipositif de contrôle et laminoir pour le réglage d'une température de sortie d'une bande métallique quittant un train de laminage
EP4122616A1 (fr) Procédé et dispositif de fabrication d'une bande métallique
DE2823071C2 (fr)
EP3535071B1 (fr) Procédé et installation de production d'une bande métallique
EP3138639B1 (fr) Procede de production d'une bande metallique par laminage en continu
DE3309040A1 (de) Verfahren und vorrichtung zum herstellen von walzband mit hoher bandprofil- und bandplanheitsguete
EP3009205B1 (fr) Prise en compte d'une vitesse de référence pour la détermination d'une vitesse de guidage
DE102009060828A1 (de) Walzanlage zum kontinuierlichen Walzen von bandförmigem Walzgut

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA RS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20120211