CN102218450B - Control device of fine-finishing continuous rolling mill, control method and control mode generating method - Google Patents

Control device of fine-finishing continuous rolling mill, control method and control mode generating method Download PDF

Info

Publication number
CN102218450B
CN102218450B CN201010206817.6A CN201010206817A CN102218450B CN 102218450 B CN102218450 B CN 102218450B CN 201010206817 A CN201010206817 A CN 201010206817A CN 102218450 B CN102218450 B CN 102218450B
Authority
CN
China
Prior art keywords
deceleration
mill
speed
fine
stocking
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
CN201010206817.6A
Other languages
Chinese (zh)
Other versions
CN102218450A (en
Inventor
井波治树
久保直博
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.)
Toshiba Mitsubishi Electric Industrial Systems Corp
Original Assignee
Toshiba Mitsubishi Electric Industrial Systems 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 Toshiba Mitsubishi Electric Industrial Systems Corp filed Critical Toshiba Mitsubishi Electric Industrial Systems Corp
Publication of CN102218450A publication Critical patent/CN102218450A/en
Application granted granted Critical
Publication of CN102218450B publication Critical patent/CN102218450B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

The invention provides a control device of a fine-finishing continuous rolling mill, which can prevent sheet materials from being damaged by passing through the rolling mill due to rolling deceleration and control the temperature of the rolled sheet materials by corresponding to the deceleration. The invention also provides a control method and a control mode generating method. The control device of the fine-finishing continuous rolling mill comprises a speed monitoring device (11) for performing real-time monitoring on the rolling speed of the rolled materials (100); a calculation device (12) for calculating a time for deceleration so as to make the rolled materials (100) changed into a tail end passing speed when the rolled materials (100) passed through the deceleration finishing rolling mill base every time the rolled materials (100) are conveyed inside the fine-finishing continuous rolling mill (20) for a certain length; a speed control device (13) for controlling the adjustment of rolling speed executed by the fine-finishing continuous rolling mill (20) so as to start deceleration at the set time; and a temperature control device (14) for controlling the temperature adjustment executed by the fine-finishing continuous rolling mill (20) so as to compensate the temperature change of the rolled materials (100) due to deceleration.

Description

The control device of fine-finishing continuous rolling, control method and control model generation method
Technical field
The present invention relates to have control device, control method and the control model generation method of the fine-finishing continuous rolling of a plurality of mill stands.
Background technology
The fine-finishing continuous rolling that disposes continuously a plurality of mill stands is used to hot rolling line etc.In fine-finishing continuous rolling, for fear of being damaged through milling train by sheet materials such as the crawling of stocking, perforate, fractures, need to guarantee by the sheet material of the tail end of stocking through milling train stability.Therefore, to by stocking in fine-finishing continuous rolling mobile speed (hereinafter referred to as " mill speed ".) control.Specifically, preferably, by by stocking, the mill speed (hereinafter referred to as " tail end is through speed ") during through the mill stand of the terminal section of fine-finishing continuous rolling and mill speed complete being fixed by the value of having set by the tail end position of stocking (hereinafter referred to as " deceleration completing place ") while being decelerated to tail end through speed.Below, the change by the mill speed of stocking being provided through speed and deceleration completing place by this tail end is called to " tail end deceleration mode ".
From the viewpoint of the productivity ratio of product, consider, the deceleration of preferably delaying as much as possible mill speed starts regularly.This be because, slow down to start regularly more late, longer by the rolling of stocking distance with what mill speed was advanced faster, shorter to carried out the time that obsession needs from front end to tail end by stocking.In addition, because the deceleration because of mill speed causes being declined by the temperature of stocking, therefore in order to extend and to make material temperature remain certain interval as much as possible, the deceleration of also preferably delaying as much as possible mill speed starts regularly.
On the other hand, if delay the deceleration of mill speed, start regularly, in situation about having, when being passed fine-finishing continuous rolling by the tail end of stocking, mill speed can not be decelerated to desirable tail end completely through speed.In this case, can at aspects such as stretchings, produce sheet material through milling train damage.In addition, be a significant slowdown by stocking in the situation that, used the temperature of cooling sprayer etc. to control to compensate and declined by the temperature of stocking, can occurrence temperature precision inadequate and so on quality problems.
Thereby, in order to prevent that sheet material from passing milling train damage and quality management etc., tail end deceleration mode is calculated, thereby determine to slow down, start regularly.
In general, by the moment in the precalculated position of the entrance side of stocking arrival fine-finishing continuous rolling, for example, by the moment of entrance side thermometer, tail end deceleration mode is calculated, thereby determine that the deceleration of mill speed starts regularly.Then, according to start regularly to wait the deceleration instruction pattern of carrying out appointment to slowing down, carry out controlled rolling speed.
Yet, in the situation that the entrance side of fine-finishing continuous rolling calculates tail end deceleration mode, sometimes after because dynamically controlling, mill speed is changed etc., between the setting speed of mill speed when calculating tail end deceleration mode and the actual value of mill speed, produce difference.Due to the difference of this mill speed, in the timing that can cause completing by the deceleration by centered by the tail end of stocking, produce error.Therefore,, in the situation that in bad condition, damage through milling train usually being produced sheet material by the tail end of stocking.
Therefore, following method has been proposed:, according to notifying respectively by the tail end of stocking, by the tail end of each mill stand, pass signal, obtain in real time band in finishing mill remaining long, according to long more than band and speed actual value, the rate of deceleration of mill speed is revised to (for example, with reference to patent documentation 1).
Patent documentation 1: the flat 4-13407 communique of Japan's open patent
Yet, in above-mentioned proposed method, must pre-determine the reducer pedestal of the deceleration of mill speed, and change with this understanding the rate of deceleration.Thereby, if the rate of deceleration of mill speed surpasses the limit of equipment, cannot suppress sheet material through the generation of milling train damage.In addition, in order to obtain tail end long more than band and that use through signal, also need higher computational accuracy.
In addition, the calculating of tail end deceleration mode is independent of temperature and controls to carry out in general.Thereby, may not utilize temperature to control to compensate the temperature by stocking that the deceleration because of mill speed produces and decline.That is,, from temperature controlled viewpoint, the change of slow down beginning timing and the rate of deceleration becomes external disturbance.
Summary of the invention
In view of the above problems, the object of the present invention is to provide and can suppress sheet material that the deceleration because of mill speed causes through the generation of milling train damage and can control by the control device of the fine-finishing continuous rolling of the temperature of stocking, control method and control model generation method corresponding to the deceleration of mill speed.
According to a mode of the present invention, a kind of control device of fine-finishing continuous rolling is provided, this fine-finishing continuous rolling disposes a plurality of mill stands continuously, the control device of this fine-finishing continuous rolling comprises: (a) speed mointor, and this speed mointor is to being monitored in real time by stocking mobile mill speed in fine-finishing continuous rolling; (b) calculation element, whenever transmitted certain length in fine-finishing continuous rolling by stocking, this calculation element just uses mill speed and the predetermined rate of deceleration, the deceleration that calculating starts the deceleration of mill speed starts regularly, make when being completed mill stand by stocking through the deceleration of selecting from a plurality of mill stands, mill speed becomes predefined tail end through speed; (c) speed control unit, this speed control unit is controlled the adjusting of the mill speed of being carried out by fine-finishing continuous rolling, makes regularly with the rate of deceleration, the deceleration of mill speed to be started in the beginning of slowing down; And (d) temperature control equipment, this temperature control equipment is regulated and controls by the temperature of stocking what carried out by fine-finishing continuous rolling, make compensation because of the deceleration of mill speed cause by the variations in temperature of stocking.
According to another way of the present invention, a kind of control method of fine-finishing continuous rolling is provided, this fine-finishing continuous rolling disposes a plurality of mill stands continuously, and the control method of this fine-finishing continuous rolling comprises: (a) to being carried out the step of monitoring in real time by stocking mobile mill speed in fine-finishing continuous rolling; (b) whenever being transmitted certain length in fine-finishing continuous rolling by stocking, with regard to calculating by mill speed and the predetermined rate of deceleration, make the deceleration that the deceleration of mill speed starts start regularly, make mill speed when being completed mill stand by stocking through the deceleration of selecting from a plurality of mill stands to become the step that predefined tail end passes speed; (c) adjusting of the mill speed of being carried out by fine-finishing continuous rolling is controlled, made to start in deceleration the step that regularly with the rate of deceleration, the deceleration of mill speed is started; And (d) to being regulated by the temperature of stocking of being carried out by fine-finishing continuous rolling control, make compensation because of the deceleration of mill speed cause by the step of the variations in temperature of stocking.
According to another mode of the present invention, a kind of control model generation method of fine-finishing continuous rolling is provided, this control model is controlled disposing continuously the fine-finishing continuous rolling of a plurality of mill stands, and this control model generation method comprises: (a) to being carried out the step of monitoring in real time by stocking mobile mill speed in fine-finishing continuous rolling; (b) whenever being transmitted certain length in fine-finishing continuous rolling by stocking, with regard to calculating by mill speed and the predetermined rate of deceleration, make the deceleration that the deceleration of mill speed starts start regularly, make mill speed when being completed mill stand by stocking through the deceleration of selecting from a plurality of mill stands to become the step that predefined tail end passes speed; (c) step of formation speed instruction mode, this speed command pattern comprises slows down beginning regularly, and to being started until the mill speed being sent is stipulated from being admitted to fine-finishing continuous rolling by stocking; And (d) according to the step of speed command pattern, generation temperature instruction mode, this temperature instruction mode is regulated and stipulates by the temperature of stocking what make that fine-finishing continuous rolling carries out, make compensation because of the deceleration of mill speed cause by the variations in temperature of stocking.
According to the present invention, can provide and can suppress sheet material that the deceleration because of mill speed causes through the generation of milling train damage and can control by the control device of the fine-finishing continuous rolling of the temperature of stocking, control method and control model generation method corresponding to the deceleration of mill speed.
Accompanying drawing explanation
Fig. 1 means the schematic diagram of the structure of the control device that embodiments of the present invention are related.
Fig. 2 is the concept map of the related equivalent distances of embodiments of the present invention.
Fig. 3 utilizes the related control device of embodiments of the present invention to calculate the flow chart that deceleration starts method regularly for illustrating.
Fig. 4 means the schematic diagram of the example of the speed command pattern being generated by the related control device of embodiments of the present invention.
Fig. 5 means the schematic diagram of the example of the temperature instruction mode being generated by the related control device of embodiments of the present invention.
Fig. 6 is the flow chart that utilizes the related control device of embodiments of the present invention to control the method for fine-finishing continuous rolling for illustrating.
Label declaration
M 1～M zdrive unit
F 1～F zmill stand
C 1～C zcooling sprayer
10 ... control device
11 ... speed mointor
12 ... calculation element
13 ... speed control unit
14 ... temperature control equipment
20 ... fine-finishing continuous rolling
21 ... temperature-adjusting device
31,32 ... movement quantity detecting sensor
41 ... fine finishining entrance side thermometer
42 ... fine finishining outlet side thermometer
100 ... by stocking
The specific embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.In the record of accompanying drawing below, same or analogous part has been added to same or analogous label.The embodiment illustrating below shows for example for by specific device or the method for technical thinking of the present invention, and embodiments of the present invention are not that the structure of component parts, configuration etc. are defined as to content as described below.Embodiments of the present invention can be carried out various changes within the scope of the claims.
The related control device 10 of embodiments of the present invention as shown in Figure 1, is to disposing continuously a plurality of mill stand F 1～F zthe device (integer more than z:2) controlled of fine-finishing continuous rolling 20.Control device 10 comprises: speed mointor 11, and 11 pairs of this speed mointors are monitored in the mill speed of fine-finishing continuous rolling 20 interior movements in real time by stocking 100; Calculation element 12, whenever by stocking 100 in the certain length of the interior transmission of fine-finishing continuous rolling 20, this calculation element 12 just uses mill speed and the predetermined rate of deceleration, and the deceleration that calculating starts the deceleration of mill speed starts regularly, makes when being passed from mill stand F by stocking 100 1～F zwhen the deceleration of selecting completes mill stand, mill speed becomes predefined tail end through speed; Speed control unit 13, the adjusting of 13 pairs of mill speeds of being carried out by fine-finishing continuous rolling 20 of this speed control unit is controlled, and makes regularly with the rate of deceleration of being scheduled to, the deceleration of mill speed to be started in the beginning of slowing down; And temperature control equipment 14, what 14 pairs of this temperature control equipments were carried out by fine-finishing continuous rolling 20 is regulated and to control by the temperature of stocking 100, make compensation because of the deceleration of mill speed cause by the variations in temperature of stocking 100.
As mentioned above, whenever by stocking 100 at the interior transmission certain length of fine-finishing continuous rolling 20, just recalculating and slow down starting regularly.In embodiment shown in Fig. 1, at entrance side and the outlet side of fine-finishing continuous rolling 20, dispose movement quantity detecting sensor 31,32.Movement quantity detecting sensor 31 monitors by stocking 100 at the entrance side of fine-finishing continuous rolling 20, detects by the amount of movement of stocking 100.Thus, can detect be admitted to fine-finishing continuous rolling 20 by the length of stocking 100.In addition, movement quantity detecting sensor 32 monitors by stocking 100 at the outlet side of fine-finishing continuous rolling 20, detects by the amount of movement of stocking 100.Thus, can detect from fine-finishing continuous rolling 20, send by the length of stocking 100.
Detected by the amount of movement Ld of stocking 100 by movement quantity detecting sensor 31,32 to control device 10 notices.Therefore, control device 10 just can detect fine-finishing continuous rolling 20 interior movements by the position of stocking 100.Whenever notified amount of movement Ld becomes certain distance, control device 10 just calculates to slow down and starts regularly.Thus, whenever by stocking 100 in the certain length of the interior transmission of fine-finishing continuous rolling 20, just calculating slows down starts regularly.For example, whenever being moved 2m by stocking 100, just calculating slows down starts regularly.
For example, when being processed beginning by the rolling of stocking 100, from movement quantity detecting sensor 31, to control device 10, notify by the amount of movement Ld of stocking 100.And, utilize movement quantity detecting sensor 32 to detect by after the amount of movement Ld of stocking 100, from movement quantity detecting sensor 32, to control device 10, notify by the amount of movement Ld of stocking 100.
The rate of deceleration of mill speed is configured to, and can by the temperature of stocking 100, be declined and compensate by 20 pairs of fine-finishing continuous rollings, and can as quickly as possible mill speed be decelerated to tail end through speed.In addition, tail end is configured to through speed, can not produce sheet material after by fine-finishing continuous rolling 20 to damage through milling train.
First, the fine-finishing continuous rolling 20 shown in Fig. 1 is described.Fine-finishing continuous rolling 20 is for example the milling train for hot rolling line, and in the example shown in Fig. 1, the hop count of the mill stand of fine-finishing continuous rolling 20 is z section.In Fig. 1, the mill stand of first section of fine-finishing continuous rolling 20 is expressed as to F 1, the mill stand of terminal section is expressed as to F z.By stocking 100 along with in fine-finishing continuous rolling 20 from mill stand F 1move to mill stand F z, and by rolling gradually.
Fine-finishing continuous rolling 20 comprises each mill stand F 1～F zthe drive unit M of configuration 1～M z.Drive unit M 1～M zcomprise mill stand F 1～F zthe motor driving respectively and detect the speed detector of mill speed according to the action of this motor.By mill stand F 1～F ztime by the mill speed of stocking 100 by drive unit M 1～M zmotor set.Drive unit M 1～M zspeed detector for example to controlling mill stand F 1～F zthe rotating speed of motor of roll rotational speed monitor, detect mill speed.
In addition, fine-finishing continuous rolling 20 has adjusting by the temperature-adjusting device 21 of the temperature of stocking 100.Temperature-adjusting device 21 is for example adjusted just being carried out cooling cooling sprayer C in fine-finishing continuous rolling 20 interior movements by stocking 100 1～C zmist flow.Specifically, in the situation that because the deceleration of mill speed causes being declined by the temperature of stocking 100, temperature-adjusting device 21 reduces cooling sprayer C 1～C zmist flow, suppress to be declined by the temperature of stocking 100.
Utilize fine finishining entrance side thermometer (FET) 41, to being admitted to fine-finishing continuous rolling 20 temperature by stocking 100 before, measure.And, utilize fine finishining outlet side thermometer (FDT) 42, the firm temperature by stocking 100 from fine-finishing continuous rolling 20 is sent is measured.
In addition, Fig. 1 represents by the front end of stocking 100 by the state of fine finishining entrance side thermometer 41.Below, by by the front end of stocking 100, the timing by fine finishining entrance side thermometer 41 is called " entrance side is specified regularly ".
Then, illustrate that the deceleration of being undertaken by control device 10 starts computational methods regularly.Control device 10, by being calculated as follows described tail end deceleration mode information I, starts regularly thereby calculate to slow down.In tail end deceleration mode information I, comprise benchmark mill stand F sTD, with apart from benchmark mill stand F sTDtime difference dt.Here, so-called " benchmark mill stand ", refers to by stocking 100 by this benchmark mill stand F sTDafterwards, entering benchmark mill stand F sTDthe mill stand of next section before the mill stand that starts of the deceleration of mill speed.So-called " time difference ", refer to by stocking 100 by this benchmark mill stand F sTDafterwards, the deceleration to mill speed starts the previous time.
In the following description, by the mill stand F of n section noutlet side be made as deceleration completing place.That is, the situation of explanation is, by mill stand F nbe made as the mill stand that slowed down, calculate tail end deceleration mode information I, make by the tail end of stocking 100 through mill stand F ntime mill speed V nbecome predefined tail end through speed V oUT.
In addition for the mill speed at outlet side, be that tail end passes speed V, oUTdeceleration complete mill stand, be generally more set as the mill stand of terminal section.Yet according to the departure of mill speed etc., the mill speed at the mill stand outlet side of terminal section cannot be decelerated to tail end through speed V sometimes oUT.Therefore, by deceleration is completed mill stand be set as before terminal section, the mill stand of the last period of terminal section for example, thereby can suppress the generation of damage.In the related control device 10 of embodiments of the present invention, can be from mill stand F 1～F zin at random select to have slowed down mill stand.
Mill stand F 1～F zin the mill stand F of the m section arbitrarily that comprises mwith mill stand F nthe relation of mill speed, according to the law of mass flow, have the relation shown in following formula (1):
V m＝[{h n×(1+f n)}/{h m×(1+f m)}]×V n ···(1)
In formula (1), V mand V nbe respectively mill stand F mwith mill stand F nthe mill speed of outlet side.In addition, h mand h nbe respectively mill stand F mwith mill stand F noutlet side by the thickness of stocking 100.F mand f nbe respectively mill stand F mwith mill stand F nfront sliding rate.
By calculate tail end deceleration mode information I the moment by the mill speed of stocking 100 (hereinafter referred to as " gait of march ") V rUN, nbe made as by mill stand F ndrive unit M ndetected speed actual value V aCT, n.Speed actual value V aCT, ncan be by monitoring in real time drive unit M by speed mointor 11 nobtain.The speed actual value V being monitored by speed mointor 11 to calculation element 12 notices from speed mointor 11 aCT, n.
Be used for mill speed from gait of march V rUN, nbe decelerated to tail end through speed V oUTrequired Δ t deceleration time is represented by following formula (2):
Δt＝(V RUN，n-V OUT)/β n ···(2)
β nfor mill stand F nthe predefined predetermined rate of deceleration.In addition, the rate of deceleration is according to which mill stand is made as to the mill stand that slowed down, and corresponding to front sliding rate to each mill stand F 1～F zpredefined.
During slowing down in mill speed, pass through mill stand F nunder by stocking 100 pass through part length (hereinafter referred to as " stocking length ") L nby following formula (3), calculated:
L n＝V RUN，n×Δt-β n/2×Δt 2···(3)
In addition, by formula (4), define mill stand F n, and mill stand F nthe mill stand F of the last period n-1between, with mill stand F noutlet side as distance (hereinafter referred to as " the equivalent distances ") L of benchmark eSn-1, n:
L ESn-1，n＝(h n-1/h n)×L PS，n+1···(4)
The L of formula (4) pS, n+1mill stand F nwith mill stand F nthe mill stand F of the last period n-1between mill stand spacing physically.Equivalent distances L by formula (4) definition eSn-1, nto have considered by mill stand F 1～F ndepress due to the mill stand spacing being changed by the length of material of stocking 100.
With mill stand F nwith mill stand F n-1between equivalent distances L eSn-1, nidentical, each equivalent distances between mill stand is with mill stand F noutlet side as benchmark, with mill stand spacing and outlet side thickness of slab physically, define.For example,, for mill stand F 1with mill stand F 2between equivalent distances L eS1,2, use mill stand F 1outlet side and mill stand F noutlet side each outlet side by the thickness h of stocking 100 1, h n, and mill stand F 1with mill stand F 2between mill stand spacing L physically pS1,2, be defined as (h 1/ h n) * L pS1,2.The concept map of the equivalent distances shown in Fig. 2 between each mill stand.
Calculation element 12 more above-mentioned stocking length and the equivalent distances in one side, as following calculate deceleration beginning regularly on one side.Here, with reference to Fig. 3 explanation, by the front end of stocking 100, be positioned at the mill stand F of k section kentrance side time, calculate to slow down start situation regularly.According to from movement quantity detecting sensor 31,32 notice by the amount of movement Ld of stocking 100, control device 10 just can determine fine-finishing continuous rolling 20 interior movements by the position of stocking 100.
L in step S110 n< L eSn-1, nsituation under, in step S115, determine to slow down start regularly, to make to be arrived by the tail end of stocking 100 the mill stand F of n-1 section n-1mill stand F with n section nbetween time the deceleration of mill speed is started.Specifically, by mill stand F n-1be made as benchmark mill stand F sTD, suc as formula (5) the such poor dt of setting-up time:
dt＝(L ESn-1，n-L n)/V ACT，n ···(5)
That is, determining to slow down starts regularly, makes from being passed through mill stand F by the tail end of stocking 100 n-1time, after the time difference dt being represented by formula (5), the deceleration of mill speed is started.On the other hand, L in step S110 n>=L eSn-1, nsituation under, advance to step S120.
L in step S120 n< L eSn-1, n+ L eSn-2, n-1situation under, in step S125, determine to slow down start regularly, to make to be arrived by the tail end of stocking 100 the mill stand F of n-2 section n-2mill stand F with n-1 section n-1between time the deceleration of mill speed is started.Specifically, by mill stand F n-2be made as benchmark mill stand F sTD, suc as formula (6) the such poor dt of setting-up time:
dt＝(L ESn-1，n+L ESn-2，n-1-L n)/V ACT，n ···(6)
That is, determining to slow down starts regularly, makes from being passed through mill stand F by the tail end of stocking 100 n-2time, after the time difference dt being represented by formula (6), the deceleration of mill speed is started.
Similarly in the following, set benchmark mill stand F sTD, and determine to slow down beginning regularly, make from complete the mill stand F of mill stand as deceleration nto benchmark mill stand F sTDmill stand between the summation of equivalent distances than stocking length L ngrow, and the summation of equivalent distances is the shortest.For example, L in the step S130 of Fig. 3 n< L eSn-1, n+ L eSn-2, n-1++ L eSk, k+1situation under, in step S135, determine to slow down start regularly, to make to be arrived by the tail end of stocking 100 the mill stand F of k section kmill stand F with k+1 section k+1between time the deceleration of mill speed is started.Specifically, by mill stand F kbe made as benchmark mill stand F sTD, suc as formula (7) the such poor dt of setting-up time:
dt＝(L ESn-1，n+L ESn-2，n-1+···+L ESk，k+1-L n)/V ACT，n ···(7)
That is, determining to slow down starts regularly, makes to be passed through mill stand F by the tail end of stocking 100 kafter, after the time difference dt being represented by formula (7), the deceleration of mill speed is started.
But, L in step S130 n>=L eSn-1, n+ L eSn-2, n-1++ L eSk, k+1situation under, the alert message such as output " can not calculate slow down start regularly " in step S140, finishing to slow down starts calculating regularly.This situation is because passed through mill stand F by stocking 100 nmill speed can not be decelerated to tail end through speed V before oUT.
For example,, at the mill stand F that completes mill stand as deceleration nwith mill stand F nthe mill stand F of the last period n-1between equivalent distances L eSn-1, nratio is by the stocking length L of stocking 100 nin situation about growing, setting slows down starts regularly, to make at mill stand F nwith mill stand F n-1between the deceleration of mill speed is started.On the other hand, at mill stand F nwith mill stand F n-1between equivalent distances L eSn-1, nfor the stocking length L by stocking 100 nin following situation, setting slows down starts regularly, makes arrived mill stand F by stocking 100 n-1make the deceleration of mill speed start before.
From calculation element 12 to speed control unit 13 notification packages, contain the benchmark mill stand F calculating as described above sTDtail end deceleration mode information I with time difference dt.As explained above, use benchmark mill stand F sTDwith time difference dt, deciding slows down starts regularly.
Speed control unit 13 is used tail end deceleration mode information I, formation speed instruction mode, and this speed command pattern comprises slows down beginning regularly, and to starting until the mill speed being sent is stipulated from be admitted to fine-finishing continuous rolling 20 by stocking 100.Below, the example of the speed command pattern shown in Fig. 4 is described.
Time t0 is the zero hour of being processed by the rolling of stocking 100 of being carried out by fine-finishing continuous rolling 20.Mill speed is now gait of march V rUN, n.Afterwards, at moment t1, the deceleration of mill speed starts.That is, t1 slows down to start the moment regularly constantly.Mill speed is with rate of deceleration β nslow down, since moment t1, through the moment t2 after deceleration time Δ t, reaching tail end through speed V oUT.Gait of march V rUN, npass speed V with tail end oUTbetween speed difference be made as Δ V.Afterwards, before the moment t3 finishing in the rolling processing by stocking 100, mill speed maintains tail end through speed V oUT.Like this, according to speed command pattern, the mill speed by the rolling of stocking 100 processing of being carried out by fine-finishing continuous rolling 20 is stipulated.In addition, as shown in Figure 4, by the stocking length L of stocking 100 nby deceleration time Δ t, speed difference Δ V, Minus speed β ndetermine.
The speed command pattern that temperature control equipment 14 generates according to speed control unit 13, generates temperature instruction mode, and this temperature instruction mode is stipulated the action of the temperature-adjusting device 21 during the interior movement of fine-finishing continuous rolling 20 by stocking 100.The temperature-adjusting device 21 of fine-finishing continuous rolling 20 moves according to this temperature instruction mode, and the temperature by stocking 100 during the interior movement of fine-finishing continuous rolling 20 is regulated.
For example, the temperature by stocking 100 causing for the deceleration compensating because of mill speed declines, and generates temperature instruction mode, and this temperature instruction mode adjustment is to the cooling sprayer C that temperature is declined by stocking 100 ejection cooling agents 1～C zmist flow.That is, generate as temperature instruction mode, make to carry out along with mill speed declines and reduces to the such mist flow pattern of the mist flow being sprayed by stocking 100.Shown in Fig. 5, according to speed command pattern shown in Fig. 4, generate, adjust cooling sprayer C 1～C zthe example of temperature instruction mode of mist flow.Mill speed certain during, mist flow is also certain, mill speed slow down during, mist flow reduces.Fig. 5 represents that mill speed is gait of march V rUN, ntime mist flow be that Q1 and mill speed are decelerated to tail end through speed V oUTafter the mist flow example that is Q2.
As mentioned above, control device 10 uses the actual value of mill speed, computational speed instruction mode, and this speed command pattern comprises: in desirable mill stand, reach desirable tail end and start regularly through the such deceleration of speed.And control device 10 operating speed instruction modes, generate the temperature instruction mode being regulated by the temperature of stocking 100.That is, control device 10 generates the control model of the fine-finishing continuous rolling 20 that comprises speed command pattern and temperature instruction mode, and controls fine-finishing continuous rolling 20 by this control model.Thus, suppress the sheet material that causes because of mill speed through the generation of milling train damage, and compensate by the temperature of stocking 100 and decline corresponding to the deceleration of mill speed, thereby suppress the generation because of the quality problems of temperature accuracy due to not.
Below, the action of control device 10 is described with reference to Fig. 6.Below, to the mill stand that slowed down, be mill stand F nsituation describe.
In step S10, for example, at predefined timing, already described entrance side, specify regularly, calculation element 12 calculates initial tail end deceleration mode information I.That is, use entrance side to specify mill speed and the predefined rate of deceleration regularly, calculate benchmark mill stand F sTDwith time difference dt, the mill speed that makes to have slowed down in mill stand becomes tail end through speed V oUT.From calculation element 12 to speed control unit 13 notification packages, contain the benchmark mill stand F calculating sTDtail end deceleration mode information I with time difference dt.According to tail end deceleration mode information I, speed control unit 13 formation speed instruction mode Ps.
In step S20, speed control unit 13, according to speed command pattern Ps, is controlled fine-finishing continuous rolling 20.That is, 13 pairs of the speed control units mill speed by stocking 100 in fine-finishing continuous rolling 20 interior transmission is controlled, and makes to realize the mill speed of stipulating in speed command pattern Ps.
In step S30, whenever by stocking 10 in the certain length of the interior transmission of fine-finishing continuous rolling 20, calculation element 12 just uses with reference to the illustrated method of Fig. 3, will be from mill stand F 1～F zthe mill stand F selecting in advance nbe made as the mill stand that slowed down, recalculate benchmark mill stand F sT dwith time difference dt.That is, use the gait of march V being monitored by speed mointor 11 rUN, nwith predetermined rate of deceleration β n, calculate benchmark mill stand F sTDwith time difference dt, make by stocking 100 through mill stand F ntime mill speed become predefined tail end through speed V oUT.As already described, according to comprising benchmark mill stand F sTDwith the tail end deceleration mode information I of time difference dt, deciding slows down starts regularly.According to comprising the benchmark mill stand F calculating sTDwith the tail end deceleration mode information I of time difference dt, speed control unit 13 generates new speed command pattern Ps.
In step S40, temperature control equipment 14 is according to newly-generated speed command pattern Ps, and the deceleration generating corresponding to mill speed compensates the temperature instruction mode Pt being declined by the temperature of stocking 100.
In step S50, speed control unit 13, according to speed command pattern Ps, is controlled the adjusting of the mill speed of being carried out by fine-finishing continuous rolling 20.That is, utilize speed control unit 13 accessory drive M 1～M zthereby, regulate by the mill speed of stocking 100, make to realize the mill speed of stipulating in speed command pattern Ps.Therefore, in the deceleration being calculated by calculation element 12, start regularly, with the rate of deceleration of being scheduled to, the deceleration of mill speed to be started.When being controlled by 13 pairs of mill speeds of speed control unit, temperature control equipment 14 is controlled the temperature-adjusting device 21 of fine-finishing continuous rolling 20 according to temperature instruction mode Pt.That is, utilize temperature control equipment 14 to control temperature-adjusting device 21, thereby regulate by the temperature of stocking 100, make to realize the temperature of stipulating in temperature instruction mode Pt and regulate action.Yet cannot calculating in step S30 slows down starts in situation regularly, as already described, output alert message, end is slowed down and is started calculating regularly.In the situation that cannot calculate the deceleration making new advances, start timing like this, the up-to-date speed command pattern Ps and the temperature instruction mode Pt that before using, have just calculated, 10 pairs of fine-finishing continuous rollings 20 of control device are controlled.
In step S60, for being processed in unclosed situation by the rolling of stocking 100, operation turns back to step S30, whenever by stocking 100 in the certain length of the interior transmission of fine-finishing continuous rolling 20, just regenerate speed command pattern Ps and temperature instruction mode Pt.On the other hand, in the situation that finished by the rolling processing of stocking 100, finish the control of being undertaken by 10 pairs of fine-finishing continuous rollings of control device 20.
As explained above, in control device 10, whenever being passed through certain length by stocking 100 at the entrance side of fine-finishing continuous rolling 20, just use the drive unit M to fine-finishing continuous rolling 20 1～M zthe actual value of the mill speed of monitoring and obtaining, calculates and in desirable mill stand, reaches desirable tail end and start regularly through the such deceleration of speed.Therefore, though calculate slow down to start regularly after, because dynamically controlling, mill speed is changed etc., also can use mill speed after variation to recalculate to slow down and start timing.That is, can improve the beginning computational accuracy regularly of slowing down.In addition, by use, comprise the beginning speed command pattern regularly of slowing down and generate temperature instruction mode, thereby can improve by the temperature controlled precision of stocking 100.
Thereby, related according to the embodiment of the present invention control device 10, can provide the sheet material that can suppress to cause because of mill speed pass the generation of milling train damage and can control by the control device of the fine-finishing continuous rolling 20 of the temperature of stocking, control method and control model generation method corresponding to the deceleration of mill speed.
(other embodiments)
As described above, by embodiment, narrated the present invention, but the discussion and the accompanying drawing that become a part for this disclosure should be interpreted as to limitation of the invention.By this disclosure, to industry personnel, various alternate embodiments, embodiment and application technology have been illustrated.
In the explanation of already described embodiment, show the drive unit M by fine-finishing continuous rolling 20 1～M zthe example that detected mill speed is monitored.Yet speed mointor 11 also can be directly to driving mill stand F 1～F zthe rotating speed of motor monitor to detect mill speed.
Like this, the present invention comprises various embodiments of not recording etc. certainly here.Thereby according to the above description, technical scope of the present invention is only that the specific item by the related invention of suitable claim scope determines.
Industrial practicality
The control technology of fine-finishing continuous rolling of the present invention can be used for material to be rolled the manufacturing industry of processing.

Claims (12)

1. a control device for fine-finishing continuous rolling, this fine-finishing continuous rolling disposes a plurality of mill stands continuously, it is characterized in that, and the control device of this fine-finishing continuous rolling comprises:
Speed mointor, this speed mointor is to being monitored in real time by stocking mobile mill speed in described fine-finishing continuous rolling;
Calculation element, whenever described, by stocking, in described fine-finishing continuous rolling, transmitted certain length, this calculation element just uses described mill speed and the predetermined rate of deceleration, the deceleration that calculating starts the deceleration of described mill speed starts regularly, make described while being completed mill stand by stocking through the deceleration of selecting from described a plurality of mill stands described in mill speed become predefined tail end through speed;
Speed control unit, this speed control unit formation speed instruction mode, adjusting to the described mill speed of being carried out by described fine-finishing continuous rolling is controlled, make to start regularly with the described rate of deceleration, the deceleration of described mill speed to be started in described deceleration, this speed command pattern is to being admitted to by stocking from described that described fine-finishing continuous rolling starts until the described mill speed being sent is stipulated, and comprises described deceleration and start regularly; And
Temperature control equipment, this temperature control equipment is according to described speed command pattern, generate temperature instruction mode, to what carried out by described fine-finishing continuous rolling, describedly by the temperature of stocking, regulated and to control, this temperature instruction mode is describedly regulated and stipulates by the temperature of stocking what make that described fine-finishing continuous rolling carries out, make compensation because of the deceleration of described mill speed cause described by the variations in temperature of stocking.
2. the control device of fine-finishing continuous rolling as claimed in claim 1, is characterized in that,
Described calculation element
Use in described mill speed, slow down during by described deceleration, complete mill stand describedly by the described deceleration of take separately between the length of passing through part of stocking and described a plurality of mill stand, completed the equivalent distances that the outlet side of mill stand is benchmark, calculate described deceleration and start regularly.
3. the control device of fine-finishing continuous rolling as claimed in claim 2, is characterized in that,
Described calculation element
Determine benchmark mill stand, make the described deceleration of distance complete the summation of described equivalent distances mill stand, between mill stand longer than the described described length by part by stocking,
Set described deceleration and start regularly, while making the described tail end by stocking arrive between the mill stand of next section of described benchmark mill stand and described benchmark mill stand, the deceleration of described mill speed is started.
4. the control device of the fine-finishing continuous rolling as described in any one in claims 1 to 3, is characterized in that,
Described speed mointor is by monitoring detect the speed detector of described mill speed according to the rotation of motor that drives the described fine-finishing continuous rolling of described a plurality of mill stands, thereby monitors described mill speed.
5. the control device of the fine-finishing continuous rolling as described in any one in claims 1 to 3, is characterized in that,
Described temperature control equipment is by the spray volume of the cooling sprayer of the described described fine-finishing continuous rolling being declined by the temperature of stocking is controlled, thereby describedly by the temperature of stocking, regulated and control what carried out by described fine-finishing continuous rolling.
6. a control method for fine-finishing continuous rolling, this fine-finishing continuous rolling disposes a plurality of mill stands continuously, it is characterized in that, and the control method of this fine-finishing continuous rolling comprises:
To being carried out the step of monitoring in real time by stocking mobile mill speed in described fine-finishing continuous rolling;
Whenever describedly being transmitted certain length by stocking in described fine-finishing continuous rolling, with regard to calculating by described mill speed and the predetermined rate of deceleration, make deceleration that the deceleration of described mill speed starts start regularly, make described while being completed mill stand by stocking through the deceleration of selecting from described a plurality of mill stands described in mill speed become predefined tail end through the step of speed;
The step of formation speed instruction mode, this speed command pattern is to being admitted to by stocking from described that described fine-finishing continuous rolling starts until the described mill speed being sent is stipulated, and comprises described deceleration and start regularly;
Adjusting to the described mill speed of being carried out by described fine-finishing continuous rolling is controlled, is made to start in described deceleration the step that regularly with the described rate of deceleration, the deceleration of described mill speed is started; And
According to described speed command pattern, generation temperature instruction mode, to the described step of controlling that regulated by the temperature of stocking of being carried out by described fine-finishing continuous rolling, this temperature instruction mode is describedly regulated and stipulates by the temperature of stocking what make that described fine-finishing continuous rolling carries out, make compensation because of the deceleration of described mill speed cause described by the variations in temperature of stocking.
7. the control method of fine-finishing continuous rolling as claimed in claim 6, is characterized in that,
Calculate described deceleration and start step regularly
Use in described mill speed, slow down during by described deceleration, complete mill stand describedly by the described deceleration of take separately between the length of passing through part of stocking and described a plurality of mill stand, completed the equivalent distances that the outlet side of mill stand is benchmark, calculate described deceleration and start regularly.
8. the control method of fine-finishing continuous rolling as claimed in claim 7, is characterized in that,
Calculating the step that described deceleration starts regularly comprises:
Determine benchmark mill stand, make summation that the described deceleration of distance completes described equivalent distances mill stand, between mill stand than described by the long step of the described length by part of stocking; And
Set the step that makes the deceleration of described mill speed start when described deceleration starts regularly, makes the described tail end by stocking to arrive between the mill stand of next section of described benchmark mill stand and described benchmark mill stand.
9. the control method of the fine-finishing continuous rolling as described in any one in claim 6 to 8, is characterized in that,
Being regulated by the temperature of stocking in the step of controlling described, to the spray volume of the cooling sprayer of the described described fine-finishing continuous rolling being declined by the temperature of stocking is controlled.
10. the control model generation method of a fine-finishing continuous rolling, this control model is controlled disposing continuously the fine-finishing continuous rolling of a plurality of mill stands, it is characterized in that, and this control model generation method comprises:
To being carried out the step of monitoring in real time by stocking mobile mill speed in described fine-finishing continuous rolling;
Whenever describedly being transmitted certain length by stocking in described fine-finishing continuous rolling, with regard to calculating by described mill speed and the predetermined rate of deceleration, make deceleration that the deceleration of described mill speed starts start regularly, make described while being completed mill stand by stocking through the deceleration of selecting from described a plurality of mill stands described in mill speed become predefined tail end through the step of speed;
The step of formation speed instruction mode, this speed command pattern comprises described deceleration and starts regularly, and to being admitted to by stocking from described that described fine-finishing continuous rolling starts until the described mill speed being sent is stipulated; And
According to the step of described speed command pattern, generation temperature instruction mode, this temperature instruction mode is to making the described of described fine-finishing continuous rolling execution be regulated and stipulate by the temperature of stocking, make compensation because of the deceleration of described mill speed cause described by the variations in temperature of stocking
Calculate described deceleration and start step regularly
Use in described mill speed, slow down during by described deceleration, complete mill stand describedly by the described deceleration of take separately between the length of passing through part of stocking and described a plurality of mill stand, completed the equivalent distances that the outlet side of mill stand is benchmark, calculate described deceleration and start regularly.
The control model generation method of 11. fine-finishing continuous rollings as claimed in claim 10, is characterized in that,
Calculating the step that described deceleration starts regularly comprises:
Determine benchmark mill stand, make summation that the described deceleration of distance completes described equivalent distances mill stand, between mill stand than described by the long step of the described length by part of stocking; And
Set the step that makes the deceleration of described mill speed start when described deceleration starts regularly, makes the described tail end by stocking to arrive between the mill stand of next section of described benchmark mill stand and described benchmark mill stand.
The control model generation method of 12. fine-finishing continuous rollings as described in claim 10 or 11, is characterized in that,
Described temperature instruction mode is the control model to the spray volume of the cooling sprayer of the described described fine-finishing continuous rolling being declined by the temperature of stocking is stipulated.
CN201010206817.6A 2010-04-13 2010-06-10 Control device of fine-finishing continuous rolling mill, control method and control mode generating method Active CN102218450B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010092322A JP5616673B2 (en) 2010-04-13 2010-04-13 Finishing continuous rolling mill control device, control method, and control pattern creation method
JP2010-092322 2010-04-13

Publications (2)

Publication Number Publication Date
CN102218450A CN102218450A (en) 2011-10-19
CN102218450B true CN102218450B (en) 2014-02-19

Family

ID=44775296

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201010206817.6A Active CN102218450B (en) 2010-04-13 2010-06-10 Control device of fine-finishing continuous rolling mill, control method and control mode generating method

Country Status (3)

Country Link
JP (1) JP5616673B2 (en)
KR (1) KR101192476B1 (en)
CN (1) CN102218450B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5733230B2 (en) * 2012-02-09 2015-06-10 東芝三菱電機産業システム株式会社 Control device for hot rolling line
CN103252359A (en) * 2012-02-15 2013-08-21 宝山钢铁股份有限公司 Two-stage tape threading method for controlling finish rolling temperature
JP5907264B2 (en) * 2012-07-04 2016-04-26 東芝三菱電機産業システム株式会社 Thick plate multi-rolling control device and control method
CN103506406B (en) * 2013-10-23 2015-10-21 北京和隆优化科技股份有限公司 A kind of heating-furnace method for controlling temperature inner of fast automatic adaptation milling train rhythm
JP6414233B2 (en) * 2015-02-02 2018-10-31 東芝三菱電機産業システム株式会社 Rolling line meander control device
CN105312327B (en) * 2015-11-26 2017-05-10 东北大学 Temperature control method for metal rollingpiece of hydraulic tension warm-rolling mill
CN110605351A (en) * 2019-09-30 2019-12-24 天津理工大学 Method and special device for temperature compensation in rolling process of extra-large ring for spaceflight
CN113042544B (en) * 2021-02-23 2023-05-12 首钢京唐钢铁联合有限责任公司 Method and device for acquiring strip steel tail-throwing deceleration starting point

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0408911A1 (en) * 1989-07-10 1991-01-23 DANIELI &amp; C. OFFICINE MECCANICHE S.p.A. Method for high-speed rolling and system for high-speed rolling
DE19726587A1 (en) * 1997-06-23 1999-01-07 Siemens Ag Reduction and compensation of the speed drop caused by entry of material into a roll stand

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573411A (en) * 1978-11-29 1980-06-03 Toshiba Corp Automatic decelerator for tandem mill
JPS56160819A (en) * 1980-05-13 1981-12-10 Nippon Steel Corp Controlling method for thickness of front end of steel sheet
JPH0413407A (en) * 1990-05-02 1992-01-17 Nkk Corp Method for reducing tail end of strip on continuous finishing mill and its device
JP2738246B2 (en) * 1992-11-25 1998-04-08 日本鋼管株式会社 Rolling method of rolling mill with tandem arrangement
JPH0899104A (en) * 1994-09-29 1996-04-16 Kawasaki Steel Corp Method for determining pass schedule of continuous rolling mill
JP3519857B2 (en) * 1996-03-18 2004-04-19 新日本製鐵株式会社 Rolling method of cold tandem rolling mill
JP3117919B2 (en) * 1996-09-26 2000-12-18 川崎製鉄株式会社 Method for controlling finish-out temperature of hot-rolled metal plate and control device for finish-out temperature of hot-rolled metal plate
JP2001334304A (en) 2000-05-22 2001-12-04 Mitsubishi Electric Corp Device for controlling temperature on outlet side of hot finishing rolling mill
JP2002126812A (en) 2000-10-20 2002-05-08 Kawasaki Steel Corp Rolling method and equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0408911A1 (en) * 1989-07-10 1991-01-23 DANIELI &amp; C. OFFICINE MECCANICHE S.p.A. Method for high-speed rolling and system for high-speed rolling
DE19726587A1 (en) * 1997-06-23 1999-01-07 Siemens Ag Reduction and compensation of the speed drop caused by entry of material into a roll stand

Also Published As

Publication number Publication date
JP2011218428A (en) 2011-11-04
CN102218450A (en) 2011-10-19
KR20110114406A (en) 2011-10-19
JP5616673B2 (en) 2014-10-29
KR101192476B1 (en) 2012-10-17

Similar Documents

Publication Publication Date Title
CN102218450B (en) Control device of fine-finishing continuous rolling mill, control method and control mode generating method
JP2010117362A (en) Method of determining modulus of elasticity of moving web
CA2622627A1 (en) Speed synchronization system of aluminum alloy slab continuous casting and rolling line and production facility and method of production of aluminum alloy continuously cast and rolled slab using same
US10095199B2 (en) Energy consumption predicting device for rolling line
CN105344712A (en) Raw material plate starting method for cold rolling mill
CN103384572A (en) Rolling control apparatus, rolling control method, and rolling control program
TWI515053B (en) Control apparatus for hot rolling line
WO2012104710A1 (en) Rolling method for strip and corresponding rolling line
WO2012101492A8 (en) Rolling method for strip and corresponding rolling line
CN101939118B (en) Steel strip rolling method and steel plate manufacturing method
JP5552179B2 (en) Rolling mill control device and control method thereof
JP4326413B2 (en) Rolling method and rolling apparatus for steel wire rod
JP4860777B1 (en) Measuring method of powder mass measuring device
JP4319431B2 (en) Sheet thickness control method and control device for tandem rolling mill
JP5085226B2 (en) Winding method for steel strip
CN110722006A (en) Wedge-shaped control device of hot rolling production line
CN113305154B (en) Roll shifting control method and device, rolling mill set and storage medium
JPS58168411A (en) Controlling method of schedule change in tandem rolling mill
CN111545575B (en) Thickness control method for five-stand cold continuous rolling mill in dynamic specification changing stage
JP2013111613A (en) System and method for detecting fracture of metal strip
CN1329146C (en) Thin band continuous-casting sticking-roll on-line forecasting method
JPS5970421A (en) Method for tracking rolling material
TWI565540B (en) Method for cooling roller of run-out table area and rolling system thereof
JP2760292B2 (en) Control method of tandem rolling mill
JPH03155442A (en) Method for supervising slipping of driving roll in continuous casting

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant