EP1993750B1 - Betriebsverfahren für ein reversierwalzwerk - Google Patents

Betriebsverfahren für ein reversierwalzwerk Download PDF

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Publication number
EP1993750B1
EP1993750B1 EP07726284A EP07726284A EP1993750B1 EP 1993750 B1 EP1993750 B1 EP 1993750B1 EP 07726284 A EP07726284 A EP 07726284A EP 07726284 A EP07726284 A EP 07726284A EP 1993750 B1 EP1993750 B1 EP 1993750B1
Authority
EP
European Patent Office
Prior art keywords
roller table
reversing
table area
speed
control device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07726284A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1993750A1 (de
Inventor
Edmund Koh
Birger Schmidt
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 PL07726284T priority Critical patent/PL1993750T3/pl
Publication of EP1993750A1 publication Critical patent/EP1993750A1/de
Application granted granted Critical
Publication of EP1993750B1 publication Critical patent/EP1993750B1/de
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21B39/12—Arrangement or installation of roller tables in relation to a roll stand
    • 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
    • B21B1/30—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 non-continuous process
    • B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/025—Quarto, four-high stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby

Definitions

  • the present invention relates to a data carrier with a computer program stored on the data carrier for carrying out such an operating method when the computer program is executed by a control device for a reversing mill.
  • the present invention also relates to a control device for a reversing mill, which is designed in such a way, in particular programmed, that the reversing mill can be controlled by it according to such an operating method.
  • the present invention relates to a reversing mill and a rolling produced according to the operating method of the invention.
  • the rolling stock passes through one and the same roll stand several times in succession, with the rolling direction alternating in each case.
  • the rolling stock must therefore be repeatedly accelerated and decelerated.
  • the transport rollers must be repeatedly accelerated and decelerated. Nevertheless, the peripheral speeds of the transport rollers should as far as possible coincide with the transport speed of the rolling stock. Because relative movements between rolling stock and transport rollers affect the quality of Walzgutober Design and also burden the drives of the transport rollers.
  • control device determines a time at which the rolling stock enters the respective roller table area and accelerates from this point on the transport rollers of the immediately adjacent roller table area into which the rolling stock enters next , through This procedure can be largely avoided unnecessary acceleration processes and unwanted network perturbations.
  • transport rollers of the immediately adjacent roller table area have already reached the transport speed when the rolling stock enters this immediately adjacent roller table area.
  • the object of the present invention is to provide an operating method for a reversing mill, by means of which it is possible, on the one hand, to avoid unnecessary acceleration processes and to temporally distribute required acceleration processes and, on the other hand, to ensure that the peripheral speed of the transport rollers is matched to the transport speed of the rolling stock when the rolling stock enters the respective roller table area.
  • control device individually calculates an entry time for each with respect to the respective transport process with respect to the Reversiergerüsts outlet side roller table, at which the rolling enters at the earliest in the respective roller table area, and controls the transport rollers such in that its peripheral speed is aligned with the entry speed at the latest at the time of entry.
  • the task for the data carrier is achieved in that a computer program is stored on it, which causes the execution of such an operating method when the computer program is executed by a control device for a reversing mill.
  • the object is also achieved by a control device for a reversing mill, which is designed, in particular programmed, that the reversing mill can be controlled by it according to such an operating method. Furthermore, the object is achieved by a reversing mill, which is provided with such a control device.
  • the control device thus calculates, based on its given data, in particular the - on the respective transport process and the Reversiergerüst - inlet side and outlet side speed profile for the rolling stock, the strip length and the current position of the beginning of the rolling stock the time at which the rolling stock At the earliest reaches the respective roller table area and which inlet speed of the rolling stock beginning at this time has.
  • the controller can therefore calculate back when it must be started with the adjustment of the peripheral speed of the transport rollers of the respective roller table area.
  • the starting time for the adjustment of the peripheral speed of the transport rollers to the - optionally time-dependent - inlet speed can therefore be determined properly in advance.
  • the rolling stock will be rolled in the reversing stand.
  • they are also different from a circumferential speed of work rolls of the reversing stand.
  • the present invention should also include the special case that a pure transporting of the rolling stock takes place, so that the rolling stock is not deformed during transport.
  • the control device determines a minimum period of time before transporting the rolling stock for at least one of the respective roller conveyor with respect to the respective transport process with respect to the reversing stand arranged roller table is required to equalize the peripheral speed of the transport rollers of the respective roller table range to the lead-in speed, and delays the beginning of transporting the rolling stock and the peripheral speed of the transport rollers of the respective roller table range approaches the lead-in speed, as long as the minimum period is greater than a transport time, the difference of Einlaufzeittician and start of transporting the rolling stock corresponds.
  • the control device controls at least for each with respect to the reversing frame with respect to the reversing stand arranged roller table area adjusting the peripheral speed of the transport rollers of the respective roller table area to the inlet speed according to an individual for the respective roller table range acceleration curve, the acceleration profile is determined such that a control reserve remains. Because then it is possible to correct unforeseen changes in the inlet velocity.
  • the control reserve is realized at a given maximum acceleration by determining the time period for adjusting the peripheral speed to the intake speed greater than the above-mentioned minimum time period.
  • the procedure described above can be taken not only on the outlet side, but also on the inlet side, as long as the beginning of the rolling stock has not yet reached the reversing stand.
  • the exit speed can be used, ie the speed with which the end of the rolling stock moves. Because as long as the beginning of the rolling stock has not yet reached the reversing stand, the infeed speed and the outfeed speed are identical.
  • a similar control of the roller table areas can also make sense when the rolling stock ends from a roller table area - at least on the input side of the reversing stand.
  • the control device determines at least for each with respect to the reversing stand with respect to the reversing frame arranged roller table individually a flow time at which the rolling expires at the latest from the respective roller table area, and controls its transport rollers such that their peripheral speed at the earliest from the flow time under the Outlet speed is lowered.
  • the time at which the lowering of the peripheral speed is started should preferably be before the time at which the rolling stock ends from the roller table area immediately adjacent to the reversing stand.
  • a reversing mill has a reversing stand 1, two roller conveyors 2, 3 arranged on both sides of the reversing stand 1, and a control device 4.
  • the reversing stand 1 is used for reversing rolling a rolling stock 5, in particular a strip-shaped rolling stock 5.
  • the roller tables 2, 3 serve to transport the rolling stock 5.
  • the control device 4 causes the control of the reversing mill, ie in particular the reversing stand 1 and the roller tables 2, 3rd
  • the roller tables 2, 3 each have a plurality of roller table areas 6.
  • Each roller table area 6 has at least one transport roller 7.
  • the transport rollers 7 of each roller table area 6 are controllable by the control device 4 independently of the transport rollers 7 of the other roller table areas 6.
  • at least one drive 8 is assigned to the transport rollers 7 of each roller table area 6.
  • a computer program 9 for the control device 4 is first created.
  • This computer program 9 is stored in (exclusively) machine-readable form on a data carrier 10.
  • the data carrier 10 can be, for example, an internal data carrier of the control device 4 or another computer, not shown for the sake of clarity.
  • the data carrier 10 may also be a portable data carrier 10 such as a CD-ROM 10, a memory card or a USB memory stick.
  • the computer program 9 is loaded into the control device 4 and stored there, for example on its hard disk. Will the computer program 9 due to appropriate call conditions (for example, a user input), the control device 4 activates the reversing mill in accordance with an operating method, which is described below in connection with FIGS FIGS. 2 to 5 is explained in more detail. By storing the computer program 9 in the control device 4, this is therefore correspondingly programmed or formed more generally.
  • the control device 4 initially accepts an initial position pA in step S1.
  • the initial position pA characterizes the position pA of a start 11 of the rolling stock 5 at the instant t.
  • the control device 4 also accepts a corresponding end position pE of an end 12 of the rolling stock 5 at the instant t.
  • the control device 4 accepts a transport speed vT of the rolling stock 5.
  • the transport speed vT indicates at which speed the rolling stock 5 is to be fed to the reversing stand 1.
  • the control device 4 counteracts scaffolding settings of the reversing stand 1.
  • inlet speed and outlet speed thus denote the speeds at which the beginning of the rolling stock 11 enters the roller table areas 6 or the rolling stock end 12 leaves the roller table areas 6. They are therefore used differently than usual.
  • the relative reduction ⁇ h can be determined explicitly by the framework parameters. However, it is also possible for the control device 4 to ascertain the relative decrease in diameter ⁇ h on the basis of the framework settings themselves.
  • control device 4 determines its time profiles in step S2 both for the entry speed vE and for the exit speed vA. It is therefore able to determine in advance, where the start of rolling stock 11 and the rolling stock end 12 are at any time t.
  • step S3 the control device first selects those of the roller table areas 6, which adjoin the reversing stand 1 directly on the outlet side. So it selects the roller table area 6, in which the rolling stock 5 after rolling through the reversing stand 1 first enters.
  • step S4 it makes the necessary adjustments to a rotational speed vU of the transport rollers 7 of the selected one Roller table area 6 before. Step S4 is used in conjunction with FIG. 3 will be explained in detail.
  • step S5 the control device 4 then checks whether it has already carried out the step S4 for all roller table areas 6 arranged on the outlet side. If this is not the case, the control device 4 selects the next exit-side roller table area 6 in a step S6 and returns to step S4.
  • control device 4 performs a procedure corresponding to the steps S3 to S6 with respect to the roller table areas 6 arranged on the inlet side. Again, the step S8 in conjunction with FIG. 4 will be explained in more detail.
  • step S11 the control device 4 checks whether the transport of the rolling stock 5 has ended, ie the respective transport process has ended. If this is not the case, the control device 4 returns to step S3. Otherwise, the control device 4 checks in a step S12 whether all transport operations (in particular all rolling passes to be executed) have already been carried out. If this is not the case, the control device 4 returns to step S1. Otherwise, the operating method according to the invention is completed.
  • the controller 4 determines a start time TS in a step S22.
  • TR is a time greater than zero. It has the meaning of a control reserve.
  • vE (TE) is the entry speed vE at which the start of rolling stock 11 enters the selected roller table area 6 at the time of entry TE.
  • vU (t) is the peripheral speed vU of the transport rollers 7 of the selected roller table area 6 at the instant t.
  • a is a maximum acceleration of the transport rollers 7 of the selected roller table 6.
  • control device 4 calculates a lowering time TA "in a step S23.
  • k is a factor that lies between zero and one. Preferably, it is close to zero, e.g. B. between 0.0 and 0.2.
  • a step S24 the control device 4 checks whether the current time t has already exceeded the starting time TS. If this is not the case, the controller 4 carries out a reaction in a step S25, which may be arbitrary in the context of the present invention.
  • the control device 4 further checks in a step S26 whether the entry time TE has already been exceeded and the rolling stock 5 has already reached the selected roller table area 6. If not, controls the control device 4 in a step S27 to the transport rollers 7 such that their peripheral speed VU is approximated to the inlet velocity vE at the entry time TE. Since this adjustment in step S27 preferably takes place with the maximum acceleration a, it is ensured that the peripheral speed vU of the transport rollers 7 is adjusted in good time, ie at the latest at the entry time TE, to the entry speed vE. In addition, the time reserve TR remains as a control reserve to compensate for any unforeseen changes in the intake velocity vE. Due to the individual determination of the start time point TS and the individual entry speed vE at this point in time TS, the acceleration course with which the circumferential speed vU is adjusted is also individual for the respective roller table area 6.
  • the control device 4 checks whether the lowering time TA "has already been reached in a step S28 If this is not the case, the control device 4 holds the peripheral speed vU of the transport rollers 7 of the selected roller table area 6 on the Otherwise, in a step S30, it lowers the peripheral speed vU of the transport rollers 7 of the selected roller table area 6.
  • step S29 the comparison speed for the peripheral speed vU is the entrance speed vE, and in step S30, the exit speed vA.
  • steps S29 and S30 the contradiction between steps S29 and S30 is only apparent.
  • the outlet velocity vA is equal to the inlet velocity vE.
  • step S8 of FIG. 2 corresponds with long distances.
  • FIG. 3 The only difference is that at FIG. 4 instead of step S29, a step S31 is carried out in which the peripheral speed vU is maintained at the coasting speed vA. Again, the contradiction with step S27 is only apparent. Because of the fact that in the context of FIG. 4 the selected roller table area 6 is on the inlet side, the inlet speed vE is equal to the outlet speed when entering the Walzgut managings 11 in the selected roller table area 6. VA.
  • step S21 the determination of the run-out times TA, TA 'can be omitted in step S21.
  • Step S41 to S46 inserted are between steps S2 and S3 of FIG. 2 Step S41 to S46 inserted.
  • step S41 the control device 4 selects - analogously to step S3 of FIG. 2 -
  • step S42 the control device 4 determines a transport time ⁇ t.
  • the transport time ⁇ t corresponds to the time span which elapses from the beginning of the transporting of the rolling stock 5 to the entry time point TE of the start of rolling stock 11 into the selected roller table area 6.
  • the sizes used in this formula are all already defined.
  • step S44 the controller 4 checks whether the transport time ⁇ t exceeds the minimum time TM. If this is not the case, in step S45 the control device 4 approximates the peripheral speed vU of the transport rollers 7 of the selected roller table area 6 to the entry speed vE. Otherwise, it starts in step S46 with the transport of the rolling stock. 5

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Metal Rolling (AREA)
  • Soil Working Implements (AREA)
  • Control Of Conveyors (AREA)
EP07726284A 2006-03-15 2007-02-02 Betriebsverfahren für ein reversierwalzwerk Active EP1993750B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07726284T PL1993750T3 (pl) 2006-03-15 2007-02-02 Sposób eksploatacji walcarki nawrotnej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006011937A DE102006011937A1 (de) 2006-03-15 2006-03-15 Betriebsverfahren für ein Reversierwalzwerk
PCT/EP2007/051007 WO2007104609A1 (de) 2006-03-15 2007-02-02 Betriebsverfahren für ein reversierwalzwerk

Publications (2)

Publication Number Publication Date
EP1993750A1 EP1993750A1 (de) 2008-11-26
EP1993750B1 true EP1993750B1 (de) 2010-12-01

Family

ID=37909507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07726284A Active EP1993750B1 (de) 2006-03-15 2007-02-02 Betriebsverfahren für ein reversierwalzwerk

Country Status (9)

Country Link
EP (1) EP1993750B1 (pl)
CN (1) CN101400458B (pl)
AT (1) ATE490034T1 (pl)
DE (2) DE102006011937A1 (pl)
PL (1) PL1993750T3 (pl)
RU (1) RU2426614C2 (pl)
TW (1) TWI371320B (pl)
UA (1) UA96287C2 (pl)
WO (1) WO2007104609A1 (pl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3116608A1 (en) * 2018-11-23 2020-05-28 Cockerill Maintenance & Ingenierie S.A. Flexible cold rolling mill and method for converting the same
CN112024615A (zh) * 2020-09-17 2020-12-04 大连交通大学 一种轧机智能送料系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232369A (en) * 1978-07-31 1980-11-04 Tokyo Shibaura Denki Kabushiki Kaisha Method of controlling the deceleration of a reversing mill
JPS5794415A (en) * 1981-09-30 1982-06-11 Hitachi Ltd Speed controlling device for hot rolling mill
JPS60127017A (ja) * 1983-12-15 1985-07-06 Toshiba Corp 可逆圧延機のロ−ラ−テ−ブル制御装置
SU1632538A1 (ru) * 1989-04-05 1991-03-07 Киевский Институт Автоматики Им.Хху Съезда Способ управлени скоростным режимом при реверсивной прокатке и устройство дл его осуществлени
JP3308926B2 (ja) * 1999-03-19 2002-07-29 川崎製鉄株式会社 圧延方法
JP2001062503A (ja) * 1999-08-25 2001-03-13 Kawasaki Steel Corp リバース圧延の圧延材搬送制御方法
DE102004034090A1 (de) * 2004-07-15 2006-02-02 Sms Demag Ag Walzanlage zum Walzen metallischen Guts

Also Published As

Publication number Publication date
TW200744770A (en) 2007-12-16
DE502007005841D1 (de) 2011-01-13
EP1993750A1 (de) 2008-11-26
DE102006011937A1 (de) 2007-09-20
CN101400458A (zh) 2009-04-01
PL1993750T3 (pl) 2011-05-31
RU2426614C2 (ru) 2011-08-20
RU2008140734A (ru) 2010-04-20
ATE490034T1 (de) 2010-12-15
WO2007104609A1 (de) 2007-09-20
UA96287C2 (ru) 2011-10-25
CN101400458B (zh) 2011-09-07
TWI371320B (en) 2012-09-01

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