CN1759945A - Method and apparatus for controlling rolling operation - Google Patents
Method and apparatus for controlling rolling operation Download PDFInfo
- Publication number
- CN1759945A CN1759945A CNA2005101085826A CN200510108582A CN1759945A CN 1759945 A CN1759945 A CN 1759945A CN A2005101085826 A CNA2005101085826 A CN A2005101085826A CN 200510108582 A CN200510108582 A CN 200510108582A CN 1759945 A CN1759945 A CN 1759945A
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- China
- Prior art keywords
- roll
- plate width
- rolling
- accumulative total
- control
- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
-
- 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/24—Automatic variation of thickness according to a predetermined programme
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/40—Control of flatness or profile during rolling of strip, sheets or plates using axial shifting of the rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2263/00—Shape of product
- B21B2263/04—Flatness
- B21B2263/06—Edge waves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2263/00—Shape of product
- B21B2263/20—End shape; fish tail; tongue
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention solves the problem that rolling by which the quality of edge drop and the prevention of roll marks on the surfaces of a sheet caused by scratching rolls by the end parts of the sheet are compatible is difficult heretofore. A work roll ( WR ) is divided into some virtual regions in the width direction, the length of rolling in which an end part of a sheet exists in the position is integrated and the shift position of the WR is decided so as not to use a region where the integrated value exceeds a certain value in the shift region of the WR where the edge drop does not exceed the allowable value. By this invention, both of the quality of the edge drop and the quality of the sheet surface can be attained. Furthermore, the reduction of the cost required for rolls and the increase of production by reducing the time necessary to roll changing are possible because the roll life can be prolonged.
Description
Technical field
The present invention relates to control method for rolling and device.
Background technology
In general, in rolling control, in order to prevent that the thickness of slab that is rolled material plate width end from descending, the object edge loss amount setting value that edge penalty (edge drop) is measured value and steel plate compares calculating, according to this calculated value relatively, carry out the mobile control to the plate width of work roll of milling train.Such technology for example, is opened in the clear 60-12213 communique on the books the spy.
In such work roll control, if edge penalty control is stable, then work roll moves axially the position and can not produce change.At roll mandrel under the certain situation in shift position, because therefore continuous being loaded on the roller surface and the part that the plate end contact of the local power that is produced by the plate end can produce the muscle shape here gradually and damage.The part of this roll damage to rolled stock, is caused producing so-called roll marks transcription by transcription, and the surface quality of plate is worsened.
Summary of the invention
The present invention takes the problems referred to above point into account and carries out, and the object of the present invention is to provide a kind of control method for rolling or rolling control device, by this method or device, also can suppress surface quality and worsen in edge penalty control.
To achieve these goals, in the present invention, specify and be rolled near the corresponding roll zones material plate width end, the accumulative total working condition.
Preferred implementation is, be arranged on the storage area that the roll broad ways is divided into several virtual regions, each zone is added up plate end in this regional mill length, judge that by its aggregate-value this zone stamps the degree of roll marks, and when controlling by the shift position of edge penalty control breaker roll, in the moving area of the allowed band that satisfies edge penalty, realize determining the shift position not use above-mentioned measured value to surpass the mode in the zone of certain value.
Preferred implementation is, work roll is divided into several virtual regions on width, accumulative total plate end is positioned at the mill length of this position, the work roll that is no more than permissible value at edge penalty moves axially in the zone, so that do not use the mode of above-mentioned aggregate-value, determine the shift position of work roll above the zone of certain value.
The deterioration that therefore, can suppress surface quality.
Description of drawings:
Fig. 1 is all block diagrams of the edge penalty control device of milling train.
Fig. 2 is the pie graph of mill stand (stand).
Fig. 3 is the action specification figure at the mill length integrating device in different WR zone.
Fig. 4 is WR vibration (oscillation) action specification figure of present embodiment.
Among the figure: 1-mill stand, 2-be rolled material, 3-edge penalty detector, 4-edge penalty control output calculation element, 5-object edge loss setting device, 6-WR mobile controller, 7-at the mill length integrating device in different WR zone, 8-WR vibration output calculation element, 9-WR move controls the output determination device, 10-edge penalty decision maker, 11-edge penalty are removed WR amount of movement calculation element.
The specific embodiment
Below, with reference to accompanying drawing, embodiments of the invention are described.
Fig. 1 is an embodiment who uses the edge penalty control device of milling train of the present invention.Rolled stock 15 is rolled down to the thickness of hope by mill stand 1.The details of mill stand 1 as shown in Figure 2.Work roll 111 and following work roll 112 (work roll 111 and following work roll 112 are work roll 11 on the general name) are set, clamp and be rolled material 15.Last work roll 111 and following work roll 112 have tapering in plate width end separately.For example, the tapering portion of last work roll 111 is arranged on the right part, and the tapering portion of following work roll 112 is arranged on the left part, and the tapering portion of last work roll 111 and the tapering portion of following work roll 112 are arranged on the end of opposition side.By such setting, can carry out edge penalty control with the two ends that are rolled material plate width.
Clamp work roll 111 and following work roll 112, further clamp central roll 121 and following central roll 122 (central roll 121 and following central roll 122 are central roll 12 on the general name), and then folder is provided with top backing up roll 131 and lower support roller 132 (general name top backing up roll 131 and lower support roller 132 are backing roll 13) every them.
As shown in this figure, in the edge penalty control device of embodiment, edge penalty detector 3 is arranged on the mill stand outlet side.Edge penalty detector 3 detects the deviation that as shown in Figure 4 edge penalty is estimated the thickness of slab of point (for example, apart from plate end 10mm position) and plate central portion (for example, apart from plate end 100mm position) thickness of slab.According to the edge penalty value of being measured by the edge penalty detector with by the deviation of the object edge loss of object edge loss setting device 5 decisions, edge penalty control output calculation element 4 edge calculation damage controls output is as the amount of movement of work roll 11.The amount of movement of work roll 11 (WR amount of movement) is that as shown in Figure 2, calculating begins part to the distance that is rolled material 15 ends (Δ W from the tapering of last work roll 111
S) as fore side, in addition, calculating begins distance (the Δ W of portion to the end that is rolled material 15 from the tapering of following work roll 112
D) as driving side.These Δs W
SWith Δ W
DBe to move control output determination device 9 as final output, output to the amount of WR mobile controller 6, and draw, but in the following,, represent a side calculating as representative by calculating respectively from WR.Certainly, calculate its other party too.In addition, also can be with Δ W
SWith Δ W
DAs identical value.
Mill length at each virtual region of the mill length integrating device 7 accumulative total WR widths in different WR zone.WR vibration output calculation element 8 calculates the work roll oscillating quantity Δ W that is used to change work roll axial internal clearance (Δ W) according to this aggregate-value
OCThe edge thickens (edgeup) decision maker 10 according to the edge penalty detected value, judges the state (edge thickens) of other part thickenings of thickness ratio of plate end.The edge thickens to be removed WR amount of movement calculation element 11 and thickens evaluation work roll axial internal clearance Δ W in order to remove the edge
EUWR moves control output determination device 9 and thickens the output of removing WR amount of movement calculation element 11 according to edge penalty control output calculation element 4, WR vibration output calculation element 8 and edge, the final control output of decision.Thus, WR mobile controller 6 control mill stands 1.Details to edge damage control output calculation element 4 describe.
Being controlled to be example with the edge penalty of 6 segmentation mill stands 1 describes.Edge penalty control output calculation element 4 carries out the edge penalty control in the milling train, its milling train goes out the edge penalty amount (reduction of the thickness of slab of plate end) of side, the object edge loss of giving poor according to the detection signal of edge penalty detector 3 with by object edge loss setting device 5, the amount of the actuator that the calculating operation milling train has (actuator), the control edge penalty.In 6 segmentation milling trains,, this actuator moves (2) central roll 12 (central rolls because having (1) work roll 11 (to call WR in the following text); To call IMR in the following text) move, by controlling these, control edge penalty amount.The WR of work roll 11 moves, the IMR of central roll 12 moves the function of the direction of principal axis position of roll separately that changes respectively.Owing to processed taper (tapering) in roll one end as shown in Figure 2 in advance, by changing the axial position of roll, change taper (tapering) starting point of the relative rolled stock of roll, be positioned at the distribution of destructive power of the plate of rolled stock end by change, the control edge penalty.That is, edge penalty is controlled output calculation element 4 so that by the approaching mode of losing the object edge loss amount of setting device 5 settings by object edge of the edge penalty amount of edge penalty detector 3 detections, evaluation work roll axial internal clearance Δ W.
Then, to describing at the mill length integrating device 7 in different WR zone and the details of WR vibration output calculation element 8.At first, initial for mill length integrating device 7 at different WR zone, the plate width of work roll 111 relatively, make as shown in Figure 3 virtual zone (i-n ..., i-1, i, i+1 ..., i+m).Move by edge penalty control etc. the width shift position of this roll.By this shift action change be rolled material plate end with the roll position contacting.In integrating device 7, have at the WR zone to each virtual region (i-n ..., i-1, i, i+1 ..., i+m) storage area of accumulative total mill length, the mill length of the above-mentioned virtual region of plate end contact is stored in the accumulative total operation of rolling.For the aggregate-value of each virtual region, the value that accumulative total begins from the roll exchange constantly (when roll exchanges, removing aggregate-value).
With WR vibration output calculation element 8, calculate output (WR amount of movement Δ W) correction, i.e. WR oscillating quantity Δ W with respect to edge penalty control output calculation element 4
OCThat is, the WR amount of movement is corrected for Δ W+ Δ W
OC
In WR vibration output calculation element 8, carry out to judge, promptly, to each the 1st regulation mill length aggregate-value (for example, every 100m), judge last time the plate end respective regions and the zone and current whether the same of work roll 11 corresponding to the plate end respective regions of work roll 11.If identical, then with from last last time work roll 11 plate end respective regions up the moving direction of the plate end respective regions of task roll 11 become equidirectional mode, calculate the WR oscillating quantity.For example, if be to move to regional i from regional i-1 from last last time to last time, then specifically with work roll 11 plate end respective regions from the mode that regional i moves to regional i+1, calculate WR oscillating quantity Δ W
OCBy such control, according to WR amount of movement Δ W+ Δ W
OC, work roll 11 image patterns 4 (b) move like that.
If it is very high that this aggregate-value, can judge that this zone of roll produces the possibility of damaging above a certain amount of (be to compare fully big value with above-mentioned the 1st aggregate-value, for example 10km is called the 2nd aggregate-value).At this moment, the shift position of change roll (following this shift position change action is called vibration).
As shown in Figure 4, edge penalty is that the slave plate end begins to be positioned at the reduction that the thickness of slab of the edge penalty evaluation point of tens of millimeters inboards is compared with the plate end.Process owing on roll, carry out image pattern 4 such tapers,, can control this edge penalty by changing the shift position of its width.If the shift position is changed to interior side direction away from the plate end, the edge penalty amount reduces, if change into towards the outside on the contrary, and then edge penalty amount increase.
As discussed previously, the shift position of change roll when certain regional aggregate-value surpasses a certain amount of (the 2nd aggregate-value).That is, this is less important when regional i moves to regional i+1, surpasses under the 2nd aggregate-value situation, once more so that its mode that moves to regional i+2 is calculated WR oscillating quantity Δ W at the prolongation aggregate-value of regional i+1
OCBut, owing in edge penalty being differently with thickness of slab control etc. has allowed band, if edge penalty is in this scope, even then also it doesn't matter in the shift position of roll.That is, as shown in Figure 4,, obtain WR moving range (the maximum WR amount of movement WR that can allow edge penalty from the edge penalty allowed band
MaxWith minimum WR
Min), with WR amount of movement (Δ W+ Δ W
OC) compare.When the WR amount of movement of the presumptive area i+1 that moves departs from the WR moving range, for example, calculate Δ W so that the zone moves in contrast to the mode of the direction that moves to current zone from last sub-region
OCFor example, last time, specifically, control work roll 11 made it from regional i return area i-1 if move to regional i from regional i-1.
From the viewpoint that the edge penalty amount reduces, move 1 zone amount to the inside.Then, when this regional aggregate-value surpasses when a certain amount of, change moving of 1 zone amount more to the inside.Then, carry out the result of this action, if edge penalty surpasses allowed band, 1 zone amount of side shifting outwardly on the contrary then.Repeat moving laterally, when edge penalty surpasses allowed band once more, restart moving to the inside.
By above-mentioned a series of actions, the moving area of the allowed band of the edge penalty in 1 circle is satisfied in decision.After determining this moving area,, carry out shift action to make the uniform mode of the amount that has the plate end in each zone as far as possible.For example in Fig. 4, use present regional i-1, shift action direction next time becomes regional i by medial movement, but, because the excessive (value between the 1st aggregate-value and the 2nd aggregate-value of regional i aggregate-value, be called the 3rd aggregate-value), do not use this zone, change the shift position to regional i+1.
Like this, since the shift position repeat inboard → outside → inboard → ... change, claim this action to be vibration.
Then, the edge being thickened decision maker 10 and edge thickens the details of removing WR amount of movement determination device 11 and describes.Thicken in the decision maker 10 at the edge, check that the edge of edge penalty evaluation point as shown in Figure 4 thickens.When detecting the edge and thickening, thicken by the edge and to remove WR amount of movement calculation element 8, calculate and be used to remove the WR amount of movement Δ W that the edge thickens
EUSpecifically, making WR amount of movement Δ W is near zero or zero.
Then, WR being moved the details of controlling output determination device 9 describes.Move control output as WR, (1) outlet side edge penalty control output 4, (2) WR vibration control output 8, (3) edge thickens removes control output 11, and these 3 control output valves are input to WR and move control output determination device 9.WR moves control output determination device 9, according to the detected value of edge penalty detector 3, when judging that the edge has taken place to be thickened, the edge is thickened the output valve Δ W that removes WR amount of movement 11
EUAs the work roll axial internal clearance.If do not have the edge to thicken, and the edge penalty amount is in prescribed limit (edge penalty allowed band as shown in Figure 4.But, also can be than the wide scope of this allowed band or than the narrow scope of this allowed band can) scope outside, with the output valve Δ W of edge penalty control output calculation element 4 as the work roll axial internal clearance.If in allowed band, then with the output valve Δ W+ Δ W of WR oscillation device 8
OCAs the work roll axial internal clearance.Like this, move in the control output determination device 9, give priority, the final control output of decision these 3 outputs at WR.For example, priority 1 thickened as the edge remove control output, priority 2 as going out lateral edges damage control output, is exported priority 3 as WR vibration control.Wherein, in priority, can also select to export that is not zero, move final control output, provide control output the WR mobile controller as WR.
And, as device of the present invention, edge damage control output calculation element 4, object edge loss setting device 5, WR mobile controller 6, the mill length integrating device 7 at different WR zone, WR vibration output calculation element 8, WR are moved control output determination device 9, edge to be thickened decision maker 10 and edge and thickens and remove WR amount of movement calculation element 11 and be illustrated, but these a whole or part is certainly passed through software operation by one or more computer.
By these, in edge penalty control, can realize edge penalty and plate surface quality and deposit rolling.In addition, can realize the long lifetime of roll, and originally cut Minus, be used for the time reduction that roll exchanges, output is increased by the one-tenth of roll.
As above explanation, the mill length of the virtual region of each WR plate width of accumulative total, by not using this aggregate-value to surpass the zone of certain certain value, prevent the roll marks transcription to rolled stock, thereby the goods that can realize stable edge penalty are with the rolled stock surface quality and deposit, can also realize the time reduction of Chenging this Xiao Minus and being used for the roll exchange of roll long lifetime, roll.
Claims (12)
1, a kind of control method for rolling, near the thickness of slab the end of controlling the plate width that is rolled material, breaker roll is controlled in the mode that moves at the plate width, it is characterized in that,
For with the plate width end that is rolled material near the zone of corresponding roll carry out specificly, add up for the working condition of this specific region, according to described accumulative total situation, control the mobile of described roll.
2, control method for rolling according to claim 1 is characterized in that,
To be divided into a plurality of zones with near the corresponding roll plate width end that is rolled material,,, control moving of described roll according to described each accumulative total situation to each zone accumulative total working condition that is divided.
3, control method for rolling according to claim 2 is characterized in that, described accumulative total is the accumulative total of mill length.
4, control method for rolling according to claim 3, it is characterized in that, when described mill length surpasses setting,, control moving of described roll so that be near the mode of part from leaving the plate width end that is rolled material of the roll in corresponding zone.
5, control method for rolling according to claim 1 is characterized in that, will be divided into a plurality of zones with near the corresponding roll plate width end that is rolled material, and according to from the zone to regional stage move described roll mode control.
6, control method for rolling according to claim 5 is characterized in that, so that the mode that described roll periodically moves repeatedly from a direction towards other direction is controlled.
7, control method for rolling according to claim 6 is characterized in that, with the allowance according near the thickness of slab the described plate width end, suppresses the mode of the scope that the described cycle moves and controls.
8, control method for rolling according to claim 1 is characterized in that, when near the thickness of slab the plate width end that is rolled material near or when surpassing the thickness of slab of central part direction, so that the mode that described thickness of slab diminishes is controlled moving of described roll.
9, a kind of rolling control device, near the thickness of slab the end of controlling the plate width that is rolled material, breaker roll is controlled in the mode that moves at the plate width, it is characterized in that,
Possess: for the plate width end that is rolled material near the zone of corresponding roll carry out specific and carry out the integrating means of accumulative total for the working condition of this specific region,
And,, control moving of described roll according to described accumulative total situation.
10, rolling control device according to claim 9, it is characterized in that, will be divided into a plurality of zones, to each zone accumulative total working condition that is divided with near the corresponding roll plate width end that is rolled material, according to described each accumulative total situation, control moving of described roll.
11, rolling control device according to claim 10 is characterized in that, described accumulative total is the accumulative total of mill length.
12, rolling control device according to claim 11, it is characterized in that, when described mill length surpasses setting,, control moving of described roll so that be near the mode of part from leaving the plate width end that is rolled material of the roll in corresponding zone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004297082A JP4151637B2 (en) | 2004-10-12 | 2004-10-12 | Rolling control method |
| JP2004297082 | 2004-10-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1759945A true CN1759945A (en) | 2006-04-19 |
| CN100475370C CN100475370C (en) | 2009-04-08 |
Family
ID=36379497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101085826A Expired - Fee Related CN100475370C (en) | 2004-10-12 | 2005-10-10 | Method and apparatus for controlling rolling operation |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4151637B2 (en) |
| KR (1) | KR100686295B1 (en) |
| CN (1) | CN100475370C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372566A (en) * | 2012-04-25 | 2013-10-30 | 三菱日立制铁机械株式会社 | Rolling mill equipped with work roll shift function |
| CN112893476A (en) * | 2021-01-15 | 2021-06-04 | 山信软件股份有限公司 | Method for calculating rolling mileage of cold rolling mill |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4208509B2 (en) * | 2002-07-18 | 2009-01-14 | 東芝三菱電機産業システム株式会社 | Model learning device for rolling process |
| JP4213434B2 (en) * | 2002-09-03 | 2009-01-21 | 東洋鋼鈑株式会社 | Edge drop control device for rolling mill |
| JP4213433B2 (en) * | 2002-09-03 | 2009-01-21 | 東洋鋼鈑株式会社 | Edge drop control device for rolling mill |
-
2004
- 2004-10-12 JP JP2004297082A patent/JP4151637B2/en not_active Expired - Fee Related
-
2005
- 2005-10-10 CN CNB2005101085826A patent/CN100475370C/en not_active Expired - Fee Related
- 2005-10-11 KR KR1020050095183A patent/KR100686295B1/en active IP Right Grant
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372566A (en) * | 2012-04-25 | 2013-10-30 | 三菱日立制铁机械株式会社 | Rolling mill equipped with work roll shift function |
| CN103372566B (en) * | 2012-04-25 | 2015-07-08 | 三菱日立制铁机械株式会社 | Rolling mill equipped with work roll shift function |
| CN112893476A (en) * | 2021-01-15 | 2021-06-04 | 山信软件股份有限公司 | Method for calculating rolling mileage of cold rolling mill |
| CN112893476B (en) * | 2021-01-15 | 2022-03-22 | 山信软件股份有限公司 | Method for calculating rolling mileage of cold rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006110551A (en) | 2006-04-27 |
| KR20060052154A (en) | 2006-05-19 |
| CN100475370C (en) | 2009-04-08 |
| KR100686295B1 (en) | 2007-02-26 |
| JP4151637B2 (en) | 2008-09-17 |
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Granted publication date: 20090408 Termination date: 20211010 |