CN101332473B - Crown control device and method of hot rolling mill - Google Patents
Crown control device and method of hot rolling mill Download PDFInfo
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- CN101332473B CN101332473B CN2008101274253A CN200810127425A CN101332473B CN 101332473 B CN101332473 B CN 101332473B CN 2008101274253 A CN2008101274253 A CN 2008101274253A CN 200810127425 A CN200810127425 A CN 200810127425A CN 101332473 B CN101332473 B CN 101332473B
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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
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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
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
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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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
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- 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
- B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
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Abstract
The invention provides a convexity control device and method for hot rolling mill. Characteristic quantities are extracted with an establishing section (102) for establishing computation to compute setting value of a bender and convexity detected with a convexity metering device (171) before rolling steel plate, front and rear ends of the bend are corrected in minimization direction of transition area of front and rear ends according to the value computation. Therefore, the invention comprises a front and rear ends correction mode adjusting section (104) for computing correction mode of front and rear ends of the steel plate for next time of the steel plate; a front and rear ends correction section (105) computing correction value of the bender in the steel plate rolling according to correction mode of the bender and rolling section information of the steel plate; an operation value computing section (130) for computing bender instruction value according to setting value and correction value of the bender, and outputting the same to the hot rolling mill. As a result, area with stable convexity in long axis direction of the steel plate is maximized, and uniform degree of the convexity in long axis direction is improved, such that uniform convexity is carried out in long axis direction of the steel plate.
Description
Technical field
The present invention relates to hot rolling (Hot Inter calendering) convexity (crown) control device and the method for milling train (mill), relate to and be applicable to the control mode that makes the convexity homogenization at the long axis direction of steel plate.
Background technology
Existing that convexity is on the books at patent documentation 1,2 in the method for the long axis direction homogenization of steel plate.In patent documentation 1, represented following method, promptly resulting detection convexity in rolling is locked (lock on) in the suitable moment, by being carried out FF/FB as desired value at the steel plate long axis direction, lock value controls, and with the method for convexity in the long axis direction homogenization of steel plate.
In patent documentation 2, represented following method, promptly be directed to the variation of convexity deviation, rolling load-carrying, mill speed etc. and, improve the degree methods of the long axis direction homogenization of convexity the moment optimization of locking in above-mentioned.
[patent documentation 1] spy opens the 2006-021243 communique
[patent documentation 2] spy opens the 2006-231387 communique
The method of patent documentation 1, convexity in rolling detection property is good more effective more, rolling by Steger under the enough situations of function with sufficient precision determination each current (path) or strange convexity of passing through, perhaps in tandem mill, between stand (stand), the convexity meter is set, can utilize under the situation of this measurement result, be effective method.But, in tandem mill, go out side the convexity meter only is set at final stand, therefore under situation about only measuring, even the convexity of perhaps measuring in rolling can not fully be guaranteed under the situation of precision the problem that exists validity to reduce as final rolling result's convexity.
In addition, in patent documentation 2, represented to lock method for optimizing constantly, but not expression by locking ahead of time constantly, at the steel plate long axis direction further with the method for convexity homogenization.
Summary of the invention
The problem that the present invention will solve is, by being that bending apparatus (bender) is suitably proofreaied and correct and controlled to the operating side of convexity control in the front-end and back-end of steel plate, thereby is that non-stable zone minimizes in the front and back end with convexity, the steel plate long axis direction on a large scale with the convexity homogenization.This result is that locking constantly ahead of time.Also be only to adopt the convexity data of promptly measuring as final rolling result to calculate correcting value or the corrected time of fixing the later bending apparatus of a steel plate.
In order to solve this problem, in the present application, the operational ton of the crown correction of steel plate front and back end is decomposed into front end correcting value, front end correction distance, rear end correcting value, these four values of rear end correction distance calculates, be provided with: the convexity data of the convexity of the steel plate long axis direction that is detected when being accumulated in rolling the end are accumulated portion; Carry out the bending apparatus of feature extraction according to the guide look data of convexity and adjust pointer extracting portion; Store the adjustment amount preservation portion of the operational ton of four crown correction; The front end correcting value of calculating front end correcting value, front end correction distance, rear end correcting value, rear end correction distance respectively according to the adjustment pointer that is extracted and the operational ton stored calculates that portion is calculated by portion, front end correction distance, the rear end correcting value calculates portion and the rear end correction distance is calculated portion.Also possess:, calculate the bending apparatus correcting value of steel plate long axis direction and the front and back end correcting value portion of output according to above-mentioned four outputs of calculating portion; With cooperate by the bending apparatus value that predetermined control determined, finally calculate the operational ton of the bending apparatus operational ton corresponding and calculate portion with each position of steel plate long axis direction.
Effect of the present invention is described.The convexity data are accumulated in the portion, and the convexity of the steel plate of reeling as goods is attached in the distance of distance steel plate front end and accumulated.Bending apparatus is adjusted pointer extracting portion from the guide look data of convexity, following momentum, the front end convexity of extracting the front end convexity arrive the following momentum of distance before the stable state, rear end convexity apart from the steel plate front end, from stable state end portion to the steel plate rear end apart from these four characteristic quantities, adjust pointer as bending apparatus.The front end correcting value is calculated portion, front end correction distance and is calculated portion, rear end correcting value and calculate the portion of calculating of portion, rear end correction distance and obtain the last time value of respectively calculating portion and being exported from adjustment amount preservation portion, by adopt the computing of the characteristic quantity that is extracted, the operational ton of calculating four crown correction that are applicable to steel plate next time.And then the comprehensive above-mentioned information of front and back end correction unit, calculate the bending apparatus correcting value corresponding with each position of steel plate long axis direction, the bending apparatus operational ton corresponding with each position of steel plate long axis direction calculated in the synthetic operational ton of the fixed bending apparatus of Decision and the output of front and back end correction unit by setting up of the operational ton portion of calculating.
The effect of invention
By the present invention, in astable of the convexity of steel plate front and back end (transition state portion), obtain relatively convexity, and obtain stablizing convexity in the moment more Zao than steel plate leading section near desired value by suitable correction, therefore can lock ahead of time constantly.
And then, owing to do not use the convexity information in rolling, therefore and according to the final convexity data computation bending apparatus correcting value after rolling, also can be applicable to and only measure as the situation of final rolling result's convexity or promptly allowing to measure convexity in rolling but because various reasons and can not fully guarantee the situation of precision.
Description of drawings
Fig. 1 is the structure chart of the crown control device of expression embodiments of the invention 1.
Fig. 2 is the key diagram of the definition of expression convexity.
Fig. 3 is the ideograph of the detection convexity of expression steel plate long axis direction.
Fig. 4 accumulates the key diagram of accumulating example of mechanism for expression convexity data.
Fig. 5 is the detection convexity of expression with respect to the steel plate long axis direction, the ideograph of the characteristic quantity that is used to adjust.
Fig. 6 adjusts the flow chart of the processing of pointer extracting mechanism for the expression bending apparatus.
Fig. 7 preserves the key diagram of the preservation example of mechanism for the expression adjustment amount.
Fig. 8 is the ideograph of the bending apparatus correcting value of expression steel plate long axis direction.
Fig. 9 is the flow chart of the processing of expression front and back end aligning gear.
Figure 10 is the structure chart of crown control device that possesses the load-carrying aligning gear of embodiment 2.
Figure 11 is the flow chart of the processing of expression load-carrying aligning gear.
Figure 12 is the structure chart of crown control device that possesses the temperature correction mechanism of embodiment 3.
Figure 13 is the flow chart of the processing of expression temperature correction mechanism.
Figure 14 is the structure chart that the adjustment pointer that possesses embodiment 4 is preserved the crown control device of mechanism.
Figure 15 adjusts the key diagram that pointer is preserved the preservation example of mechanism for expression.
Figure 16 on steel plate long axis direction carries out the mode of FF/FB control and the structure chart of embodiment 1 with lock value as desired value for the crown control device combination by embodiment 5.
Figure 17 is the system construction drawing that the adjustment of the front and back end correcting value of bending apparatus is carried out remote service.
Among the figure:
The 100-control device; 102-sets up (set up) mechanism; 103-controls model; Guiding mechanism is proofreaied and correct in the 104-front and back end; 105-front and back end aligning gear; The 112-bending apparatus is adjusted pointer extracting mechanism; The 113-adjustment amount is preserved mechanism; 114-end correcting value is calculated mechanism; 115-front end correction distance is calculated mechanism; 116-rear end correcting value is calculated mechanism; 117-rear end correction distance is calculated mechanism; The 130-operational ton is calculated mechanism; 150-controls object; 1002-load-carrying aligning gear; 1202-temperature correction mechanism; 1401-adjusts pointer and preserves mechanism.
The specific embodiment
In embodiments of the present invention, comprising on the long axis direction of front and back end, producing the steel plate that the convexity near desired value distributes equably.And then, also can realize the homogenization of the shape (deviation of the elongation of width) of steel plate by with the convexity high precision int, as a result of can produce high-quality goods.Below, with reference to the accompanying drawings embodiments of the invention 1～embodiment 6 is at length described.
[embodiment 1]
Fig. 1 represents the structure chart of the crown control device of embodiments of the invention 1.Crown control device 100 receives various signals from control object 150, to control object 150 output control signals.At first the structure of object 150 is controlled in explanation.
The control object 150 of present embodiment is the Steger rolling mills of hot rolling, will by last operation be raw material 152 about the thickness 30mm that produces of thick roll mill by milling train 151 back and forth rolling about 3～7 times, produce the steel plate 153 about 2mm～10mm.Below, be called current (pass, パ ス) with each time is rolling.Steel plate in rolling is by reeling at the approaching side up-coiler 162 and the side up-coiler 163 of going out on one side, Yi Bian back and forth rolling, thereby from the state attenuation gradually of raw sheet.In the present embodiment, the side of going out at milling train 151 is provided with the convexity meter 171 of the convexity amount of measuring steel plate.
Fig. 2 is the key diagram of the definition of expression convexity.The thickness h c of the central authorities that so-called convexity C is a plate poor with apart from thickness h e1, the he2 of edge certain distance part is by formula 1 expression.
[formula 1]
C＝he-(he
1+he
2)/2
The measuring point of he1, he2 promptly is defined as 40mm apart from the distance at edge morely, but the situation of 25mm or 70mm is also arranged.As shown in Figure 2, convexity meter 171 has a plurality of measuring points 201 at the plate width, on the basis that the thickness of slab of check-out console width distributes, calculates the convexity amount.In the present embodiment, the controlled situation of bending power that the thickness distribution of plate width is mainly by the steel plate width direction that working roll 160 is given is that example describes, but roller is up and down intersected (cross), under the situation about controlling with the angle of the crossing, also can use the present invention equally.Below bending power is called bending (bending) power.
Is the setting value of bending force from control device 100 to the operational ton of milling train 151 outputs.In addition, the resulting convexity of result that convexity meter 171 detects according to control is exported to crown control device 100 as measured value.In fact obtain more signal, but only the signal of necessity is illustrated.
Next, the structure of crown control device 100 is described.Crown control device 100 has the mechanism of foundation 102, and its mode according to the plate crown of productive target is determined each back and forth rolling current target convexity, calculates the bending apparatus instruction B0 that realizes the target convexity with reference to control model 103.In addition, have: the convexity receiving mechanism 110 that receives the measurement result of convexity meter 171; The convexity data of attaching the convexity data that received in the distance of distance steel plate front end and accumulating are accumulated mechanism 111; According to the convexity data of being accumulated the steel plate that is rolled is later on calculated bending apparatus correcting mode (bodyguard Specifications) that is suitable in the steel plate front and back end and the front and back end of output correction guiding mechanism 104.Also have front and back end aligning gear 105, the output that guiding mechanism 104 is proofreaied and correct in its front and back end is promptly calculated the correcting value of front and back end according to the bending apparatus correcting mode with the distance of distance steel plate front end particularly, and exports as Δ B1.And, calculate mechanism 130 by synthetic output of setting up mechanism 102 and front and back end aligning gear 105 and output to the bending apparatus setting value Bref of working roll 160 outputs operational ton and constitute.
And then front and back end aligning gear 104 has: accumulate the convexity data of the block plate amount in the mechanism 111 according to being accumulated in the convexity data, extract the bending apparatus of the characteristic quantity of the front and back end correcting mode that is used for definite bending apparatus and adjust pointer extracting mechanism 112; Preserve mechanism 113 with the adjustment amount of accumulating the adjustment amount of proofreading and correct current front and back end.In addition, have: adjust the content that characteristic quantity that pointer extracting mechanism 112 extracted and adjustment amount are preserved mechanism 113 according to bending apparatus, calculate the front end correcting value of correcting value of the bending apparatus of steel plate front end and calculate mechanism 114; Calculate the scope that applies the front end correction and calculate mechanism 115 as the front end correction distance of the distance of distance steel plate front end; Calculate the rear end correcting value of correcting value of the bending apparatus of steel plate rear end and calculate mechanism 116; Apply the scope of proofreading and correct the rear end and calculate mechanism 117 with calculating as the rear end correction distance of the distance of distance steel plate rear end.
Below, the processing of each several part is at length described.Control model 103 is for being used to infer the numerical expression of convexity amount after rolling (steel plate go out side convexity amount).Mainly (work roll crown) Lai Decision is fixed, becomes the such algebraic expression of formula 2～formula 4 as an example by roller footpath profile (profile) shape of the width that applies bending force, the convexity amount (steel plate approaching side convexity amount) before rolling, rolling load-carrying, working roll for convexity.Convexity is called the convexity ratio divided by the value of thickness of slab, and ε H represents the convexity ratio before rolling in algebraic expression, and ε h is the convexity ratio after rolling.
[formula 2]
εh＝A1·εH+A2·B+A3·P+A4·CRW+A5
[formula 3]
εh＝Ch/hc
[formula 4]
εH＝CH/Hc
Wherein, CH: steel plate approaching side convexity amount (rolling lordosis tolerance), Ch: steel plate is gone out side convexity amount (rolling back convexity amount), Hc: approaching side thickness of slab, hc: thick, the B of the side plate of going out: amount of bow, P: rolling load-carrying, CRW: work roll crown, A1～A5: the coefficient of being determined by thickness of slab, plate width, steel grade etc.
Set up mechanism 102 according to fixed each the current rolling load-carrying of Decision, the temperature of plate etc., determine as in final current each target convexity of passing through that obtains the target convexity in order to obtain the target thickness of slab.Afterwards, with the presumed value of approaching side convexity, approaching side thickness of slab, thick, the rolling load-carrying of the side plate of going out and work roll crown amount as input value, go out the relation of side convexity amount according to the input value that is provided by formula 2～formula 4 and steel plate, by each current bending force B0 and output of calculating the target convexity that realizes that each is current.In addition, work roll crown infers by considering that the thermal expansion amount in rolling, the computing behind the displacement of the steel plate width direction that subtracts the effect that declines, working roll 160 in the caused roller of abrasion footpath after working roll 160 exchanges determine.
The general convexity that Fig. 3 schematically shows from the steel plate front end to the rear end distributes.From steel plate front end 301 to the rear end 302 detection convexity C (l) relatively steel plate length (l) be described.By the convexity of the rolling steel plate of Steger rolling mills,, therefore has bigger value as shown in the figure in the steel plate front and back end because temperature reduces.
Therefore, all convexitys of steel plate distribute and become big, are divided into front end transition state portion 303, stabilizers 304, rear end transition state portion 305.In order to obtain good convexity control result at the steel plate long axis direction, except the convexity that makes stabilizers 304 near the desired value, the front end transition state portion 303 and the scope of rear end transition state portion 305 are diminished as far as possible, stabilizers 304 need be guaranteed in the scope bigger than steel plate long axis direction.Usually the convexity precision of stabilizers 304 is fixed by the formedness Lai Decision of the result of calculation of setting up mechanism 102.The opposing party, the purpose of the front and back end bearing calibration of the bending apparatus that the application provided is to increase the scope of stabilizers.
Fig. 4 represents that the convexity data accumulate the structure of mechanism 111.The convexity data are accumulated mechanism 111 and are obtained the mensuration convexity that convexity receiving mechanism 110 is received, and attach in the distance of distance steel plate front end and accumulate.The example of the measured value of convexity is preserved in expression among Fig. 4 with 100mm unit to the rear end from the steel plate front end.
Below, the structure of expression front and back end correcting mode guiding mechanism 104.Schematically represent the characteristic quantity that bending apparatus adjustment pointer extracting mechanism 112 is extracted among Fig. 5.Bending apparatus is adjusted the waveform of pointer extracting mechanism 112 according to convexity, convexity following that extracts length L t, the front end transition state portion 303 of front end transition state portion 303 dashes the following momentum Ub of the convexity of the length L b of (undershoot) amount Ut, rear end transition state portion 305, rear end transition state portion 305, is used as being used to adjusting the characteristic quantity of the correcting mode of front and back end.At this, Ut, Ub get negative value under the situation of dashing down.Detect in the convexity 401, Lt, Ut adopt steel plate leading section convexity 404 and stabilizers convexity 405, and in addition, Lb, Ub adopt stabilizers convexity 405 and steel plate rearward end convexity 406, followingly calculate like that.
Fig. 6 represents to be used to extract the algorithm of Lt, Ut, these four characteristic quantities of Lb, Ub.At first the detection convexity C (l) of every 100mm is calculated rolling average Ca (l) by S6-1.Rolling average Ca (l) can be calculated by formula 5.
[formula 5]
N depends on the extent of deviation of convexity data and definite value, but in fact selects the situation of the value about 2～5 more.Next, calculate each mobile variance corresponding with l.Mobile variance Cv (l) can be calculated by formula 6.
[formula 6]
Next, calculate the value of the mean value that is equivalent to the stabilizers convexity.Be L if steel plate is long, the mean value CA of the C (l) between calculating from M to L-M.Mean value CA is calculated by formula 7.
[formula 7]
M is the parameter that is used for determining realizing fully stablizing the scope of convexity, can be set at 1/3 of L for example.At this moment, adopt the convexity data of the central authorities 1/3 of steel plate to calculate mean value.
Next, by S6-2 extract between Ca (l) and the CA difference below the certain value and Cv (l) satisfy the minimum of a value l of the l below the certain value
Minl
MinExpression is from the steel plate front end, and convexity is gradually near the value of stabilizers, and deviation is stabilized in the length of certain value till following.Be about to the length quantification of front end transition state portion.
In S6-3, compare l apart from l at distance steel plate front end
MinLittle scope, the minimum of a value Ct of extraction Ca (l)-CA
MinCt
MinWhen negative, the expression convexity is dashed Ct down near the steel plate front end
MinBig more, big more corresponding with following momentum.
In S6-4, the difference of extracting Ca (l) and CA below the certain value and Cv (l) satisfy the maximum l of the l below the certain value
Maxl
MaxBe illustrated in from the steel plate rear end when front end is reviewed, convexity is close gradually to the value of stabilizers, and deviation is stabilized in the length of certain value till following.Be about to the length quantification of rear end transition state portion.
In S6-5, compare l apart from l in distance steel plate rear end
MaxBig scope, the minimum of a value Cb of extraction Ca (l)-CA
MinCb
MinWhen negative, the expression convexity is dashed Cb down near the steel plate rear end
MinBig more and following momentum is big more corresponding.
In S6-6, by substitution l
MinCalculate Lt, by substitution Ct
MinCalculate Ut, by substitution L-l
MaxCalculate Lb, by substitution Cb
MinCalculate Ub.
More than, calculate whole 4 characteristic quantities shown in Figure 5.Below, expression is a purpose with the following momentum that dwindles the steel plate front and back end and the scope of transition state, suitably in the method for steel plate front and back end bending with sizing device.
Fig. 7 represents that adjustment amount preserves the structure of mechanism 113, and Fig. 8 represents the ideograph of bending apparatus correcting value that the steel plate long axis direction is applied.The front and back end that bending apparatus is proofreaied and correct steel plate applies, as shown in Figure 8, the correcting range (apart from the gauge length of steel plate front end) of establishing the steel plate front end is A, and the correcting value of steel plate front end is B, the correcting range of steel plate rear end (to the gauge length of steel plate rear end) is C, and the correcting value of steel plate rear end is D.In the adjustment of the correcting mode of this front and back end bending apparatus nothing but for A, B, C, D are adjusted into suitable value.
Adjustment amount is preserved mechanism 113 in the present embodiment, comes layering by steel grade, thickness of slab, plate width, current numbering as shown in Figure 7, preserves accordingly with each layering to be used for adjustment amount A, B, C, the D that bending apparatus is proofreaied and correct.The experiential value of the initial value of A, B, C, D waits imports suitable value.The expression steel grade is stainless SUS304 among Fig. 7, and thickness of slab is 2.0～3.0, and the plate width is 900mm, the 1st when current, and implementing the length A that bending apparatus proofreaies and correct apart from the steel plate front end is 24m, and bending apparatus correcting value B is 150ton, bending apparatus correcting range C apart from the steel plate rear end is 14m, and correcting value D is 120ton.
According to the common Steger rolling mills that with the rolled stainless steel is object, the maximum of current number of times is 7, but is in the milling train of object with the high-strength material, exists the maximum of current number of times need be the situation of bigger value.At this moment, only need guarantee that adjustment amount preserves the layering of the current number of times of mechanism 113 and get final product.
The front end correcting value calculate mechanism 114, front end correction distance calculate mechanism 115, rear end correcting value calculate mechanism 116, rear end correction distance calculate mechanism 117 preserve according to adjustment amount the content of mechanism 113 with according to characteristic quantity Lt, the Ut, Lb, the Ub that are extracted by current rolling resulting convexity waveform, by each current A ', B ', C ', D ' that each time of using in next time rolling passed through that calculate respectively.
Basic to calculate strategy all identical in the front and back end, is directed to the following momentum of convexity, reduces the bending apparatus correcting value when momentum is big down, not down towards the time, on the direction of the scope that reduces the convexity transition state, adjust the correcting range of bending apparatus.
In order to calculate A '～D ', the front end correcting value is calculated mechanism 114, front end correction distance and is calculated that mechanism 116 is calculated by mechanism 115, rear end correcting value, the rear end correction distance is calculated mechanism's 117 performed calculating formulas and represented quantitatively by formula 8～formula 11.
[formula 8]
(1) 0＜U
tThe time
A '=A+ α
1L
t *L wherein
t *=L
t-L
T0L
t-L
T0＞0
0 L
t-L
t0≤0
L wherein
T0: datum length, α
1: gain
(2) U
t≤ 0 o'clock
A’＝A+α
2U
t
α wherein
2: gain
[formula 9]
(1) U
t≤ 0 o'clock
B '=B+ α
3U
t *U wherein
t *=U
tU
t＜0
0 0≤U
t
α wherein
3: gain
(2) 0＜U
tThe time
B '=B+ α
4L
t *L wherein
t *=L
t-L
T0L
t-L
T0＞0
0 L
t-L
t0≤0
L wherein
T0: datum length, α
4: gain
[several 10]
(1) 0＜U
bThe time
C '=C+ α
5L
b *L wherein
b *=L
b-L
B0L
b-L
B0＞0
0 L
b-L
b0≤0
L wherein
B0: datum length, α
5: gain
(2) U
b≤ 0 o'clock
C’＝C+α
6U
b
α wherein
6: gain
[formula 11]
(1) U
b≤ 0 o'clock
D '=D+ α
7U
b *U wherein
b *=U
bU
b＜0
0 0≤U
b
α wherein
7: gain
(2) 0＜U
bThe time
D '=D+ α
8L
b *L wherein
b *=L
b-L
B0L
b-L
B0＞0
0 L
b-L
b0≤0
L wherein
B0: datum length, α
8: gain
By obtaining A '～D ', can determine bending apparatus correction amount delta B1 (l) uniquely to the position l of steel plate long axis direction.
Fig. 9 represents the treatment step that front and back end aligning gear 105 is performed.Among the S9-1,, obtain current rolling long l, calculate corresponding Δ B1 (l) with respect to the adjustment of the adopting front and back end correcting value guiding mechanism 104 bending apparatus correction amount delta B1 (l) of A '～D ' steel plate long (l) of calculating as a result.
Among the S9-2, will calculate the result and output to operational ton and calculate mechanism 130.Operational ton is calculated mechanism 130 will set value Bref as bending apparatus by setting up bending apparatus value B0 that mechanism 102 exported and the value after Δ B1 (l) addition, output to control object 150.The A '～D ' that is calculated is stored in the corresponding layering that adjustment amount is preserved mechanism 113 as new A～D.
In the present embodiment, be directed to apart from the distance of steel plate front end and consider that convexity distributes or the bending apparatus operational ton, but also consider to be directed to the rolling time that steel plate 153 and working roll 160 interlocks begin.In this case, also can be suitable for the present invention with identical method.In addition, in the present embodiment, consider bending apparatus as being used to control the operating side of convexity, but also can consider and be used as the operating side with the angle of the crossing and bending apparatus.In this case, also can be suitable for the present invention with identical method.
[embodiment 2]
Next, embodiments of the invention 2 are described.If in the time of (Kao order け when steel plate 153 comes off with milling train 151 interlocks), load-carrying increases.When load-carrying increased, therefore correspondence and convexity increases detected the increase of load-carrying therewith, offsets the convexity recruitment of following this phenomenon by bending apparatus, and obtaining on the convexity of homogeneous at the steel plate long axis direction is effective.
Figure 10 represents except the front and back end aligning gear 105 shown in the embodiment 1, the structure when possessing the load-carrying calibration function.Possess load-carrying receiving mechanism 1001 and load-carrying aligning gear 1002 in the present embodiment, carry out the correction of bending apparatus according to the load-carrying that is detected.But, in Figure 10, only represent front and back end aligning gear 105, omissions such as front and back end correcting mode guiding mechanism 104 and convexity receiving mechanism 110.
Figure 11 represents the processing that load-carrying aligning gear 1002 is performed.Load-carrying aligning gear 1002 adopts the load-carrying actual achievement value and the value of being supposed by foundation of the working roll 160 of the milling train 151 that is received by load-carrying receiving mechanism 1001 among the S11-1, calculates the load-carrying change.Among the S11-2, output is the correction amount delta B2 of corresponding bending apparatus therewith.Δ B2 is calculated by formula 12.
[formula 12]
ΔB
2＝β
1(Pact-Pset)
Wherein, β 1: gain, Pset: set up and calculate the load-carrying of being supposed, Pact: from control the actual achievement load-carrying that object 150 obtains at every turn.
According to formula 12, the form of the deviation of the hypothesis load-carrying when setting up calculating with distance can be calculated the variation of load-carrying.Result calculated is actual achievement load-carrying when big, by increasing bending apparatus accordingly, suppresses the increase of convexity.Operational ton is calculated mechanism 130 with B0 and Δ B1 (l) addition, and the value behind the addition Δ B2 is exported control object 150 as bending apparatus setting value Bref.
[embodiment 3]
Next embodiments of the invention 3 are described.In the rolling steel plate 153 of Steger rolling mills,, therefore get the big value of convexity because the steel billet temperature of front and back end is low.The reduction of detected temperatures is offset the convexity recruitment of following this phenomenon by bending apparatus, and is effective on the convexity that obtains homogeneous on the steel plate long axis direction.
Figure 12 represents except the front and back end aligning gear 105 shown in the embodiment 1, the structure when possessing plate temperature calibration function.Possess plate temperature testing agency 1201 and plate temperature aligning gear 1202 in the present embodiment.Plate temperature receiving mechanism 1201 receives the temperature of detected steel plate 153 from thermometer 1200.Plate temperature aligning gear 1202 comes the bending with sizing device based on the plate temperature that plate temperature receiving mechanism 1201 is received.
The processing that Figure 13 display plate temperature aligning gear 1202 is performed.Among the S13-1, plate temperature aligning gear 1202 adopts slave plate temperature receiving mechanism 1201 steel billet temperature actual achievement value that is received and the steel billet temperature of being supposed by foundation, calculates temperature change.At S13-2, output is the correction amount delta B3 of corresponding bending apparatus therewith.Δ B3 is calculated by formula 13.
[formula 13]
ΔB
3＝γ
1(Tset-Tact)
Wherein, γ 1: gain, and Tset: by the load-carrying of set up calculating hypothesis, Tact: the actual achievement temperature of at every turn obtaining from thermometer 1200.
In formula 13, the form of the deviation of the assumed temperature when setting up calculating with distance is calculated the variation of steel billet temperature.And the actual achievement temperature increases bending apparatus than assumed temperature hour according to this degree, thereby suppresses the increase of convexity.Operational ton calculate the value of mechanism 130 after with B0 and Δ B3 addition as bending apparatus setting value Bref to 150 outputs of control object.
In the present embodiment, for the front and back end correcting value of bending apparatus and the structure of temperature correction amount addition, but also can consider further addition load-carrying correcting value, addition B0, Δ B1 (l), Δ B2 calculate the structure of Bref.Also need to carry out the suitable adjustment of each gain this moment, but can be suitable for the present invention with identical method.
[embodiment 4]
Next embodiments of the invention 4 are described.In the present embodiment, a plurality of steel plates are accumulated the convexity data of rolling end, synthetically use these data to carry out the correction of bending apparatus.
Figure 14 represents the structure of the crown control device of embodiment 4.Except the structure of embodiment 1, possess and accumulate the adjustment pointer preservation mechanism 1401 that bending apparatus is adjusted the output of pointer extracting mechanism 112.Adjust pointer and preserve mechanism 1401 and accumulate the output that bending apparatus is adjusted pointer extracting mechanism 112, in the moment that is predetermined the front end correcting value is calculated mechanism 114, front end correction distance and calculate that mechanism 116 is calculated by mechanism 115, rear end correcting value, the rear end correction distance is calculated mechanism's 117 outputs and accumulated the result.
Figure 15 represents to adjust the structure that pointer is preserved mechanism 1401.For each layering of steel grade, thickness of slab, plate width, accumulate characteristic quantity Lt (1)～Lt (n), Ut (1)～Ut (n), Lb (1)～Lb (n), Ub (the 1)～Ub (n) of n steel plate from current rolling steel plate (steel plate No.1).By obtaining them, the front end correcting value is calculated mechanism 114, front end correction distance and is calculated mechanism 115, rear end correcting value and calculate mechanism 116, rear end correction distance to calculate the performed processing of mechanism 117 identical with formula 8～formula 11.In addition, also can suc as formula the example of expression in 14 like that will the value of obtaining merely on average as employed Lt, Ut, Lb, Ub, also can add in current result like that weight is weighted and on average be used as employed Lt, Ut, Lb, Ub suc as formula several 15 expression examples.
[formula 14]
[formula 15]
W (i) wherein: weighting load value
In addition, the front end correcting value is calculated mechanism 114, front end correction distance and is calculated that mechanism 116 is calculated by mechanism 115, rear end correcting value, the rear end correction distance is calculated mechanism 117 and implemented computing respectively, proofread and correct the moment of the output of guiding mechanism 104 as upgrading the front and back end, also can be the rolling at every turn of steel plate.Perhaps, also can be at characteristic quantity and preserve the moment that the data of polylith steel plate are accumulated by mechanism 1401, the front and back end is proofreaied and correct guiding mechanism 104 and is carried out computing, upgrades output.In the latter case, owing to implement crown correction with more steel plate data, therefore the response of proofreading and correct reduces, and proofreaies and correct but can carry out stable front and back end.
[embodiment 5]
Next the embodiment 5 that crown control device with 1 record of the present invention and patent documentation combines is described.Figure 16 represents the structure of the crown control device of embodiment 5, at the approaching side of milling train 151 and the side of going out the convexity meter is installed.The convexity that relative milling train 151 is positioned at the steel plate 153 of approaching side can be measured by approaching side convexity meter 170, the convexity that relative milling train 151 is positioned at away the steel plate 153 of side can be measured by going out side convexity meter 171.Below, milling train 151 carried out reciprocal rolling in, each time rolling is called current (pass), reciprocal rolling number of times is called current number of times.
In the present embodiment, control device 100 has: the mode according to the plate crown of productive target determines each target convexity that each back and forth rolling time is current, calculates the bending apparatus of realizing the target convexity with reference to control model 103 and instructs that Bset's set up mechanism 102; The 2nd time current after according to by after the once current mode of eliminating by the value of the preceding once current convexity that can not satisfy target, convexity desired value after correction is ranked, feedforward (FF) controlling organization 1710 between output calibration value B0 on the basis of the command value of proofreading and correct pairing bending apparatus current.In addition, have: the approaching side convexity receiving mechanism 1710 that receives the output of approaching side convexity meter 170; Read in and be stored in each current milling train approaching side apart near the approaching side convexity locking mechanism 1711 of the convexity the distance of the front regulation of steel plate 153; After locking is set up, obtain the deviation between the output of the output of approaching side convexity locking mechanism 1711 and approaching side convexity receiving mechanism 1710, export the long axis direction convexity approaching side controlling organization 1712 of the correction amount delta B4 that is used for bending with sizing power according to the convexity at each position of the steel plate mode consistent with the locking convexity.In addition, possess: receive away side convexity meter 171 output go out side convexity receiving mechanism 1720; In each current milling train is gone out side, read in and store and go out side convexity locking mechanism 1721 apart near the convexity the distance of the front regulation of steel plate 153; After locking is set up, obtain away the output of side convexity locking mechanism 1721 and go out deviation between the output of side convexity receiving mechanism 120, the long axis direction convexity of exporting the correction amount delta B5 that is used for bending with sizing power according to the convexity at each position of the steel plate mode consistent with the locking convexity is gone out side controlling organization 1722.
During the convexity that begins in distance steel plate 153 fronts distributed, the locking convexity obtained in the moment more Zao than original target convexity, therefore by locking the control of convexity as steel plate 153 long axis directions of target convexity, can increase the stabilizers convexity 405 of steel plate 153.In addition, by feedforward (FF) controlling organization 1710 between current compensate by later passing through and original convexity desired value between deviation, thereby can make stabilizers convexity 405 near original target convexitys.
In the structure shown in the present embodiment, add front and back end aligning gear 105 by in the crown control device shown in the patent documentation 1, paying, and the leading section convexity of steel plate 153 is promptly gradually near stable state, therefore can shorten to the distance apart from the front of steel plate 153 till the locking convexity.Perhaps under situation, can make the locking convexity near desired value with same distance locking.Under any situation, all help to increase the stabilizers convexity 405 of steel plate 153.In addition, present embodiment 5 embodiment 2,3,4 also capable of being combined.
[embodiment 6]
Figure 17 represents the system architecture of embodiment 6.Control informations such as the actual achievement data of manufacturer obtains the control device 100 of iron company 1501 via network 1511, server 1510, communication network 1503 from control object 150 Lt, Ut, Lb, Ub, the load-carrying of this moment and temperature, plate speed etc., steel grade class, thickness of slab, plate width are taken into the server 1504 of our company.And be saved in and adjust with database 1505.Adjust with the structure of database 1505 and preserve mechanism's 113 identical getting final product with adjustment amount.
Manufacturer 1502 has front and back end aligning gear 1506, according to the requirement from iron company 1501, adopts to be accumulated in to adjust and carries out the calculating of the A corresponding with each layering, B, C, D with the data in the database 1505, and result of calculation is sent to iron company 1501.
Model mechanical tuning device 1506 performed algorithms are proofreaied and correct guiding mechanism 104 identical getting final product with the front and back end.The tuning value of model also can be corresponding related with tuning number of times, also can be the corresponding related achievement remuneration of control result that improves with tuning result.
Except the convexity control of the illustrated Steger rolling mills of embodiment 1-4, the present invention, owing to be the control mode of the convexity that is directed to the steel plate after rolling, therefore go out side and be provided with in the convexity control of tandem mill of convexity meter and also can be suitable for the present invention with identical structure at final stand.
Claims (13)
1. the crown control device of a hot rolling mill, this hot rolling mill have the convexity meter that detects convexity and at least conduct be used to control the bending apparatus of the operating side of convexity,
Above-mentioned crown control device has:
Set up portion, the setting value of bending apparatus is calculated in its rolling foundation before by steel plate;
Convexity is accumulated portion, and it accumulates the convexity data of the steel plate that obtains from the convexity meter;
The adjustment part is proofreaied and correct in the front and back end, and it adopts the convexity data of being accumulated, and calculates the correcting mode of the bending apparatus of the steel plate front and back end that is suitable in steel plate next time;
The front and back end correction unit, it proofreaies and correct the information at the rolling position of the correcting mode of the bending apparatus of calculating the adjustment part and steel plate according to the front and back end, calculates the corrected value of bending apparatus in steel plate rolling; With
Operational ton is calculated portion, and its corrected value according to the setting value of above-mentioned bending apparatus and above-mentioned bending apparatus is calculated the bending apparatus command value and hot rolling mill is exported.
2. the crown control device of hot rolling mill according to claim 1 is characterized in that,
Above-mentioned front and back end is proofreaied and correct the adjustment part and is possessed bending apparatus and adjust pointer extracting portion, and it is accumulated from convexity and obtains the convexity data the portion, by the computing that is predetermined, and the length of momentum and transition state portion under steel plate leading section and rearward end are all extracted.
3. the crown control device of hot rolling mill according to claim 1 is characterized in that,
Above-mentioned front and back end is proofreaied and correct the adjustment part and possessed: bending apparatus is adjusted pointer extracting portion, and it is accumulated from described convexity and obtains the convexity data the portion, by the computing that is predetermined, and the length of momentum and transition state portion under the steel plate leading section extracts; With
The front end correcting value is calculated portion, it obtains the output that described bending apparatus is adjusted pointer extracting portion, judge whether convexity dashes under the steel plate leading section, under the situation of dashing down, reduce the bending apparatus correcting value of steel plate leading section according to following momentum, under the situation of not dashing down, increase the bending apparatus correcting value of steel plate leading section according to the length of steel plate front end transition state portion.
4. the crown control device of hot rolling mill according to claim 1 is characterized in that,
Above-mentioned front and back end is proofreaied and correct the adjustment part and possessed: bending apparatus is adjusted pointer extracting portion, and it is accumulated from described convexity and obtains the convexity data the portion, by the computing that is predetermined, and the length of momentum and transition state portion under the steel plate leading section extracts; With
The front end correction distance is calculated portion, it obtains the output that described bending apparatus is adjusted pointer extracting portion, judge whether convexity dashes under the steel plate leading section, under the situation of dashing down, reduce the bending apparatus correction distance of steel plate leading section according to following momentum, under the situation of not dashing down, increase the bending apparatus correction distance of steel plate leading section according to the length of steel plate front end transition state portion.
5. the crown control device of hot rolling mill according to claim 1 is characterized in that,
Above-mentioned front and back end is proofreaied and correct the adjustment part and possessed: bending apparatus is adjusted pointer extracting portion, and it is accumulated from described convexity and obtains the convexity data the portion, by the computing that is predetermined, and the length of momentum and transition state portion under the steel plate rearward end is extracted; With
The rear end correcting value is calculated portion, it obtains the output that described bending apparatus is adjusted pointer extracting portion, judge whether convexity dashes down in the steel plate rearward end, under the situation of dashing down, reduce the bending apparatus correcting value of steel plate rearward end according to following momentum, under the situation of not dashing down, increase the bending apparatus correcting value of steel plate rearward end according to the length of steel plate rear end transition state portion.
6. the crown control device of hot rolling mill according to claim 1 is characterized in that,
Above-mentioned front and back end is proofreaied and correct the adjustment part and possessed: bending apparatus is adjusted pointer extracting portion, and it is accumulated from described convexity and obtains the convexity data the portion, by the computing that is predetermined, and the length of momentum and transition state portion under the steel plate rearward end is extracted; With
The rear end correction distance is calculated portion, it obtains the output that described bending apparatus is adjusted pointer extracting portion, judge whether convexity dashes down in the steel plate rearward end, under the situation of dashing down, reduce the bending apparatus correction distance of steel plate rearward end according to following momentum, under the situation of not dashing down, increase the bending apparatus correction distance of steel plate rearward end according to the length of steel plate rear end transition state portion.
7. the crown control device of hot rolling mill according to claim 1 is characterized in that,
Possess bending apparatus and adjust pointer extracting portion, it is with respect to the convexity data of obtaining from the above-mentioned convexity portion of accumulating, calculate moving average, mobile variance yields, near the steel plate central authorities mean value, with near the mean value moving average and the steel plate central authorities serves as certain following and mobile variance yields serve as that position below certain is apart from the distance of steel plate front end, extract the length of the transition state portion of steel plate front end, be extracted in the transition state portion of steel plate front end from moving average and deduct the minimum of a value of the value behind near the steel plate central authorities the mean value and as the following momentum of steel plate leading section, with near the mean value moving average and the steel plate central authorities serves as certain above and mobile variance yields serve as that position more than certain is apart from the distance of steel plate rear end, extract the length of the transition state portion of steel plate rear end, be extracted in the transition state portion of steel plate rear end from moving average and deduct the minimum of a value of the value behind near the steel plate central authorities the mean value and as the following momentum of steel plate rear end.
8. the crown control device of hot rolling mill according to claim 1 is characterized in that,
Above-mentioned front and back end is proofreaied and correct the adjustment part and is possessed the pointer of adjustment preservation portion, and it accumulates a plurality of steel plate leading section and the following momentum of rearward end and length of extracting from recently rolling steel plate of transition state portion by each layering that is predetermined,
The front end correcting value is calculated portion, front end correction distance and is calculated portion, rear end correcting value and calculate portion and the rear end correction distance portion of calculating and adopt corresponding with next rolling steel plate and steel plate leading section and the following momentum of rearward end and the length of transition state portion that accumulate are calculated front end correcting value, front end correction distance, rear end correcting value, rear end correction distance respectively.
9. the crown control device of hot rolling mill according to claim 1 is characterized in that,
Possess: the load-carrying correction unit, it obtains load-carrying rolling from above-mentioned hot rolling mill, calculates and set up the bending apparatus correcting value that influence that the change of the hypothesis load-carrying when calculating brings convexity offsets, and exports as the 1st bending apparatus correcting value; With
Operational ton is calculated portion, and the corrected value of the bending apparatus that it is exported according to above-mentioned front and back end correction unit and above-mentionedly set up the bending apparatus setting value that portion exports is calculated the bending apparatus command value and hot rolling mill is exported.
10. the crown control device of hot rolling mill according to claim 1 is characterized in that,
Possess: plate temperature correction unit, it obtains steel billet temperature rolling from above-mentioned hot rolling mill, calculates and set up the bending apparatus correcting value that influence that the change of the hypothesis steel billet temperature when calculating brings convexity offsets, and exports as the 1st bending apparatus correcting value; With
Operational ton is calculated portion, and the corrected value of the bending apparatus that it is exported according to above-mentioned front and back end correction unit and above-mentionedly set up the bending apparatus setting value that portion exports is calculated the bending apparatus command value and hot rolling mill is exported.
11. the crown control device of a hot rolling mill, above-mentioned hot rolling mill possesses the convexity meter in the side of going out of milling train, and this hot rolling mill has at least the bending apparatus as the operating side that is used to control convexity,
Above-mentioned crown control device possesses:
Set up portion, it calculates the setting value of this bending apparatus by the foundation before steel plate rolling;
Convexity is accumulated portion, and it accumulates the convexity data of the steel plate that obtains from the convexity meter;
The adjustment part is proofreaied and correct in the front and back end, and it adopts the convexity data of being accumulated, and calculates the correcting mode of the bending apparatus of the steel plate front and back end that is suitable in steel plate next time;
The front and back end correction unit, it proofreaies and correct the information at the rolling position of the correcting mode of the bending apparatus of calculating the adjustment part and steel plate according to the front and back end, calculates the corrected value of bending apparatus in steel plate rolling;
Go out side convexity sticking department, the value and the output of the convexity of the distance that its storage begins to be predetermined from the front end of steel plate;
Go out side long axis direction convexity control part, it is gone out after side convexity sticking department stored the value of convexity of the distance that begins to be predetermined from the front end of steel plate at this, obtain away the deviation of the detected value of the output of side convexity sticking department and convexity meter, the operational ton of the mode correction bending apparatus that diminishes according to this deviation; With
Operational ton is calculated portion, and the corrected value of its setting value according to above-mentioned bending apparatus, bending apparatus and above-mentioned output of going out side long axis direction convexity control part are calculated the bending apparatus command value and hot rolling mill is exported.
12. the crown control device of a hot rolling mill, above-mentioned hot rolling mill possesses the convexity meter at the approaching side of milling train and the side of going out, and this hot rolling mill has at least the bending apparatus as the operating side that is used to control convexity,
Above-mentioned crown control device possesses:
Set up portion, it calculates the setting value of this bending apparatus by the foundation before steel plate rolling;
Convexity is accumulated portion, and it accumulates the convexity data of the steel plate that obtains from the convexity meter;
The adjustment part is proofreaied and correct in the front and back end, and it adopts the convexity data of being accumulated, and calculates the correcting mode of the bending apparatus of the steel plate front and back end that is suitable in steel plate next time;
The front and back end correction unit, it proofreaies and correct the information at the rolling position of the correcting mode of the bending apparatus of calculating the adjustment part and steel plate according to the front and back end, calculates the corrected value of bending apparatus in steel plate rolling;
The value and the output of the convexity of the distance that approaching side convexity sticking department, its storage begin to be predetermined from the front end of steel plate;
Approaching side long axis direction convexity control part, it has been stored at this approaching side convexity sticking department after the value of convexity of the distance that begins to be predetermined from the front end of steel plate, obtain the deviation of the detected value of the output of approaching side convexity sticking department and approaching side convexity meter, the operational ton of the mode correction bending apparatus that diminishes according to this deviation;
Go out side convexity sticking department, the value and the output of the convexity of the distance that its storage begins to be predetermined from the front end of steel plate;
Go out side long axis direction convexity control part, it is gone out after side convexity sticking department stored the value of convexity of the distance that begins to be predetermined from the front end of steel plate at this, the output of obtaining away side convexity sticking department with go out the deviation of detected value of side convexity meter, the operational ton of the mode correction bending apparatus that diminishes according to this deviation;
Operational ton is calculated portion, the output of the corrected value of its setting value according to above-mentioned bending apparatus, bending apparatus, above-mentioned approaching side long axis direction convexity control part and above-mentioned output of going out side long axis direction convexity control part are calculated the bending apparatus command value and hot rolling mill are exported.
13. the convex degree control method of a hot rolling mill, above-mentioned hot rolling mill have the convexity meter that detects convexity and at least conduct be used to control the bending apparatus of the operating side of convexity, described convex degree control method is characterised in that,
The setting value of this bending apparatus is calculated in rolling foundation before by steel plate, accumulate the convexity data of the steel plate that obtains from the convexity meter, adopt the convexity data of being accumulated, calculate the correcting mode of the bending apparatus of the steel plate front and back end that in steel plate, is suitable for next time, in steel plate rolling, calculate the corrected value of bending apparatus according to the information at the rolling position of the correcting mode of bending apparatus and steel plate, calculate the bending apparatus command value and hot rolling mill is exported according to the corrected value of the setting value of bending apparatus and bending apparatus.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007170693 | 2007-06-28 | ||
| JP2007170693A JP4606437B2 (en) | 2007-06-28 | 2007-06-28 | Apparatus and method for crown control of hot rolling mill |
| JP2007-170693 | 2007-06-28 |
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| CN101332473A CN101332473A (en) | 2008-12-31 |
| CN101332473B true CN101332473B (en) | 2011-12-14 |
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| JP5325189B2 (en) * | 2010-10-04 | 2013-10-23 | 株式会社日立製作所 | Tandem mill crown control apparatus and method |
| KR101322988B1 (en) | 2011-09-28 | 2013-10-29 | 주식회사 포스코 | Rolling mill having controller for shape of rolling plate and controlling method thereof |
| JP5469143B2 (en) * | 2011-09-29 | 2014-04-09 | 株式会社日立製作所 | Rolling control device, rolling control method, and rolling control program |
| CN102989786B (en) * | 2012-12-20 | 2015-03-25 | 济钢集团有限公司 | Optimal control system of shape and thickness of steel plate |
| CN103433295B (en) * | 2013-08-05 | 2016-08-10 | 苏州有色金属研究院有限公司 | Single-frame double-coiling aluminium hot-rolling mill convex degree control method |
| CN105834224B (en) * | 2015-01-12 | 2017-08-25 | 宝山钢铁股份有限公司 | A kind of method for preventing hot rolling layer-cold roller way from chasing after steel |
| CN104741387A (en) * | 2015-02-28 | 2015-07-01 | 太原科技大学 | Rolling schedule optimizing method based on dynamic programming method and particle swarm algorithm |
| CN107377634B (en) * | 2017-07-19 | 2018-10-16 | 东北大学 | A kind of hot-strip outlet Crown Prediction of Media method |
| CN113732073B (en) * | 2020-05-29 | 2023-04-11 | 宝山钢铁股份有限公司 | Correction method for flatness defect of finish rolling outlet strip steel |
| CN117917971A (en) * | 2022-08-23 | 2024-04-23 | 东芝三菱电机产业***株式会社 | Plate thickness control device of hot rolling mill |
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| KR101017755B1 (en) | 2011-02-28 |
| CN101332473A (en) | 2008-12-31 |
| JP2009006373A (en) | 2009-01-15 |
| JP4606437B2 (en) | 2011-01-05 |
| KR20090003106A (en) | 2009-01-09 |
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