CN102873105A - Prediction method for rectangular flat material angular rolling width - Google Patents

Prediction method for rectangular flat material angular rolling width Download PDF

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CN102873105A
CN102873105A CN2012103970960A CN201210397096A CN102873105A CN 102873105 A CN102873105 A CN 102873105A CN 2012103970960 A CN2012103970960 A CN 2012103970960A CN 201210397096 A CN201210397096 A CN 201210397096A CN 102873105 A CN102873105 A CN 102873105A
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rolling
rolled piece
piece
width
diagonal
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CN102873105B (en
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许磊
刘栩
蒋婷
庞彦国
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GUANGXI LIUZHOU YINHAI ALUMINUM INDUSTRY Co Ltd
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GUANGXI LIUZHOU YINHAI ALUMINUM INDUSTRY Co Ltd
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Abstract

The invention discloses a prediction method for the rectangular flat material angular rolling width, which relates to the technical field of rolling. The prediction method comprises the following steps of: before rolling, presetting a total rolling reduction and a gripping dip angle when a rectangular flat material blank to be rolled is subjected to angular rolling along a first diagonal; firstly calculating the plane area of a rolled piece after rolling is carried out along the first diagonal; according to the numerical value of the plane area, calculating the extension quantity of vertex angles on two ends of the first diagonal of the rolled piece after rolling is carried out along the first diagonal; calculating the width of the rolled piece after angular rolling according to the extension quantity; when the width of the pre-calculated rolled piece satisfies a production requirement, conveying to a rolling mill to be rolled; during rolling, carrying out back calculation according to an on-line actual-measurement parameter to obtain the self-learning parameter of the rolled piece being rolled; and calculating the self-learning parameter of a next rolled piece when width prediction is carried out with an exponential smoothing method so as to calculate the prediction width of the next rolled piece. Compared with the prior art, the prediction method for the rectangular flat material angular rolling width is characterized in that the rolled piece width after the angular rolling can be predicted on line, and a corresponding on-line self-learning method is combined to improve the prediction precision.

Description

The Forecasting Methodology of flat rectangular material angular rolling width
Technical field
The present invention relates to rolling technical field, especially a kind of method that solves the prediction of flat rectangular material angular rolling process width.
Background technology
The generation of flat rectangular material angular rolling technique is exactly broadening take the sheet material that solves various non-standard width specifications from the beginning as main purpose, namely solves the width problem of large specification flat rectangular material when hot rolling cogging, makes it to reach required width.Other advantages of angular rolling are to improve bite condition, relatively transverse rolling can increase ingot casting length, reduce by how much percent defectives, enhance productivity.The core content of angular rolling technology is the precomputation of broadening amount, namely according to predefined inclination angle and the drafts of nipping, the rolled piece broadening amount of finishing after the angular rolling passage is predicted, when the deviation of forecasting width and target width is not in allowed band, can adjust in time inclination angle and drafts.For a long time, the technique of angular rolling only has theoretical research, lacks the method that can be used for forecasting online width, and width accuracy can't be guaranteed effectively.So need to propose to be used in the angular rolling width Forecasting Methodology of line computation and the self-learning method of assurance precision of prediction.
Summary of the invention
The Forecasting Methodology that the purpose of this invention is to provide a kind of flat rectangular material angular rolling width, the Forecasting Methodology of this flat rectangular material angular rolling width can solve existing angular rolling and lack the problem of forecasting that width and width accuracy can't be guaranteed effectively.
In order to address the above problem, the technical solution used in the present invention is: the Forecasting Methodology of this flat rectangular material angular rolling width, before rolling, according to default overall reduction when treating that rolling flat rectangular material blank carries out angular rolling along the first diagonal, the inclination angle of nipping, calculate first along the area of plane of the rolling rear rolled piece of the first diagonal, according to the elongation of this area of plane numerical computations along the first diagonal two ends drift angle of the rolling rear rolled piece of the first diagonal, again by the rolled piece width behind this elongation calculating angular rolling, when the rolled piece width of this precomputation satisfies production requirement, carry rolling to milling train; When rolling, go out current self study coefficient at rolled piece according to online actual measurement parameter inverse, adopt exponential smoothing, the self study coefficient when calculating next piece rolled piece and carrying out the width prediction calculates the predicted width of next piece rolled piece with this.
In the Forecasting Methodology of above-mentioned flat rectangular material angular rolling width, technical scheme can also be more specifically: the following formula of rolled piece width basis behind rolling front prediction angular rolling:
According to the constancy of volume principle, calculate the area of plane along the rolling rear rolled piece of the first diagonal
Figure 2012103970960100002DEST_PATH_IMAGE001
:
Figure 322011DEST_PATH_IMAGE002
Wherein,
Figure 680311DEST_PATH_IMAGE003
,
Figure 339831DEST_PATH_IMAGE004
With Be respectively length and width and the height of the flat material rolled piece of k piece;
Figure 50615DEST_PATH_IMAGE006
With Be respectively later rolled piece wide and high of angular rolling; For along the rolling overall reduction of the first diagonal;
After k piece rolled piece was rolling along the first diagonal, the one-sided elongation of the first diagonal two ends drift angle was y k:
Wherein,
Figure 111926DEST_PATH_IMAGE010
The inclination angle of nipping when being the flat material rolled piece of k piece angular rolling;
Figure 812029DEST_PATH_IMAGE011
Be the self study coefficient that the flat material rolled piece of k piece is carried out adopt when width is predicted;
Rolled piece width behind the calculating angular rolling is:
Figure 993612DEST_PATH_IMAGE012
Wherein, It is the later width of rolled piece of the flat material angular rolling of k piece.
Further: the side jig before and after milling train does not possess under the condition of surveying wide function, when rolled piece proceeds to passage last along the first diagonal angular rolling, according to the nip online actual measurement parameter of signal, roll rotational speed and time point of rolled piece, calculate the outlet length of rolled piece, calculate on this basis the one-sided elongation of rolled piece, inverse self study coefficient; The following formula of the basis of the predicted width of next piece rolled piece:
The projected length of diagonal on rolling direction when (1) calculating is rolling along the first diagonal, its formula is as follows:
Figure 974785DEST_PATH_IMAGE013
Wherein,
Figure 540896DEST_PATH_IMAGE014
Be the length that roll turns over, unit is millimeter;
Figure 763936DEST_PATH_IMAGE015
Be roller radius, unit is millimeter; The drafts of passage last when rolling along the first diagonal, unit are millimeter;
Figure 2012103970960100002DEST_PATH_IMAGE017
Be the mill speed curvilinear function of rolled piece, be predefined value;
Figure 415026DEST_PATH_IMAGE018
Be start time point, the time point of namely nipping is got when nipping signal when detecting
Figure 456931DEST_PATH_IMAGE018
=0;
Figure 2012103970960100002DEST_PATH_IMAGE019
The time of having nipped for roll;
Figure 800056DEST_PATH_IMAGE020
Be advancing slip value, its algorithm is as follows:
Wherein, The exit thickness of passage last when rolling along the first diagonal;
Figure 2012103970960100002DEST_PATH_IMAGE023
The inlet thickness of passage last when rolling along the first diagonal;
The diagonal for the treatment of rolling flat rectangular material blank before not rolling is along the projected length of rolling direction
Figure 943221DEST_PATH_IMAGE024
For:
Figure DEST_PATH_IMAGE025
(2) along the one-sided total elongation actual value of the first diagonal angular rolling
Figure 140853DEST_PATH_IMAGE026
For:
Figure DEST_PATH_IMAGE027
(3) based on the self-learning method of exponential smoothing
Utilization is calculated by on-line parameter
Figure 734908DEST_PATH_IMAGE026
Come inverse self study coefficient For:
Figure DEST_PATH_IMAGE029
The self study coefficient calculations of k+1 piece material is:
Figure 401698DEST_PATH_IMAGE030
The width predicted value of k+1 piece rolled piece
Figure DEST_PATH_IMAGE031
For:
Figure 470149DEST_PATH_IMAGE032
Wherein
Figure DEST_PATH_IMAGE033
It is the one-sided elongation self study coefficient value of k+1 piece rolled piece;
Figure 297421DEST_PATH_IMAGE011
Be the one-sided elongation self study coefficient value of k piece rolled piece, can assert that it is the 1st block of material that self-learning function begins to start, order
Figure 818533DEST_PATH_IMAGE034
Figure DEST_PATH_IMAGE035
Be gain coefficient,
Figure 255199DEST_PATH_IMAGE036
Further: the side jig before and after milling train possesses under the condition of surveying wide function, and according to the online actual measurement parameter of rolled piece width behind the angular rolling, directly inverse goes out current self study coefficient at rolled piece , the self study coefficient
Figure 176330DEST_PATH_IMAGE028
The inverse formula be:
Figure 247054DEST_PATH_IMAGE037
The self study coefficient calculations of k+1 piece material is:
The width predicted value of k+1 piece rolled piece For:
Figure 745534DEST_PATH_IMAGE039
Wherein,
Figure 975658DEST_PATH_IMAGE033
It is the one-sided elongation self study coefficient value of k+1 piece rolled piece;
Figure 832756DEST_PATH_IMAGE011
Be the one-sided elongation self study coefficient value of k piece rolled piece, can assert that it is the 1st block of material that self-learning function begins to start, order
Figure 215458DEST_PATH_IMAGE034
Figure 804702DEST_PATH_IMAGE035
Be gain coefficient,
Figure 850019DEST_PATH_IMAGE036
Owing to having adopted technique scheme, the present invention compared with prior art has following beneficial effect: under known overall reduction and the situation at the inclination angle of nipping when carrying out angular rolling along the first diagonal, calculating is along the one-sided multi-pass total elongation of the first diagonal two ends drift angle, further calculate accordingly the rolled piece width behind the angular rolling, again in conjunction with corresponding online self-learning method to improve precision of prediction; Propose respectively to possess the reverse calculation algorithms of surveying wide function and not possessing width self-learning coefficient under the wide functional conditions of survey at milling train front and back side jig, and be used for the prediction and calculation of next piece rolled piece.
Description of drawings
Fig. 1 is in the whole process of flat rectangular material angular rolling, turns for the first time the complete shape of rolling piece schematic diagram when also rolling of material.
Fig. 2 turns for the first time the rolling complete and shape of rolling piece schematic diagram when turning for the second time behind the material also rolling behind the material.
Fig. 3 turns the rear rolling complete shape of rolling piece schematic diagram of material for the second time.
Fig. 4 is the flat material change of shape of angular rolling schematic diagram.
Fig. 5 is the flat material passage outlet of angular rolling length computation schematic diagram.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
Embodiment 1
Be the whole process of flat rectangular material angular rolling as shown in Figure 1 to Figure 3, treat that the rotating roller of rolling flat rectangular material blank 3 before roll 1 turns to certain angle, along the rolling 1-4 passage of its first diagonal AC; After the centering, turn for the first time that rolling rolled piece 4 complete and when turning for the second time behind the material also rolling turns an angle at rotating roller again behind the material, along the rolling 1-4 passage of the second diagonal BD, the rolling complete rolled piece 5 that obtains; After the centering, milling train changes over to normally automatically vertically rolling, thereby reaches the purpose of broadening.Width prediction behind the angular rolling belongs to the part of angular rolling rolling schedule calculation, after nip inclination angle and drafts are determined, need to calculate the rolled piece broadening amount that under this nips inclination angle and drafts, can reach, if the broadening quantity not sufficient is to reach the requirement of finished width, the broadening amount then needs nip inclination angle and drafts are adjusted, until can meet the demands.This angular rolling width Forecasting Methodology needs according to the initial length for the treatment of rolling flat rectangular material blank 1, and the parameters such as finished width, the inclination angle of nipping, drafts are calculated.Because it is wide rolling that flat material follow-up rolling comprises also that usually edger roll subtracts, and there is certain error in prediction algorithm itself, should be in conjunction with corresponding online self-learning method to improve precision of prediction.In the present embodiment, the side jig does not possess the wide function of survey, along the rolling passage last of the first diagonal, when rolled piece is nipped milling train, sting the material signal and can import the L2 Process Control System into, begin timing this moment, when rolled piece is dished out milling train, the material casting signal also can import the L2 Process Control System into, and timing this moment is complete.Utilize this duration and by the actual measurement speed curves that is installed in roll axle head encoder and records, the as can be known actual outlet length of rolled piece.Derive according to how much again, can get the developed width of rolled piece.
Width pre-computation methods behind the angular rolling is carried out as follows:
(1) calculating is along the area of plane of the rolling rear rolled piece of the first diagonal
Figure 432179DEST_PATH_IMAGE040
Length and width and the height of supposing the flat material blank of k piece are respectively
Figure 980972DEST_PATH_IMAGE041
, With
Figure 962145DEST_PATH_IMAGE005
The angular rolling later wide and height of rolled piece is respectively
Figure 895466DEST_PATH_IMAGE006
With
Figure 502028DEST_PATH_IMAGE007
The overall reduction rolling along the first diagonal is
Figure 947922DEST_PATH_IMAGE008
The inclination angle of nipping is
Figure 436672DEST_PATH_IMAGE010
As shown in Figure 4,
Figure 376946DEST_PATH_IMAGE042
ABCD is for treating rolling flat rectangular material blank original shape,
Figure 900331DEST_PATH_IMAGE042
A 1BC 1D is the parallelogram shape after rolling along rolled piece the first diagonal,
Figure 753012DEST_PATH_IMAGE042
A 1B 1C 1D 1For again recovering the shape of rectangle after rolling along the second diagonal, this shows, the broadening amount of rolled piece is just definite after the rolling pass that namely turns for the first time material along the first diagonal, and is cornerwise rolling just in order to ensure the rectangle rate of rolled piece along second.
Then along the area of plane of the rolling rear rolled piece of the first diagonal
Figure 932321DEST_PATH_IMAGE040
For:
Figure 473023DEST_PATH_IMAGE043
(1)
(2) the one-sided elongation y of calculating the first diagonal two ends drift angle k
As shown in Figure 4, elongation y kActual is line segment AA 1Length, i.e. AA 1=y kBy the law of metal flow of angular rolling process as can be known, the width extent of flat material depends on the elongation at four right angles to a great extent.Because there is symmetry in the deformation at four right angles, so cut-off angle ∠ BAD studies as object.Choose the A point and set up rectangular coordinate system as origin of coordinate, wherein X-axis is parallel to roll axis, and Y-axis is rolling direction.Do boost line through the B point and hand over Y-axis in the E point, do boost line through the D point and hand over Y-axis in the F point.∠ ABE equates with the pre-set inclination angle of nipping, i.e. ∠ ABE=α.Then the length of line segment BE is:
Figure 37866DEST_PATH_IMAGE044
(2)
In like manner, the length of line segment DF is:
Figure DEST_PATH_IMAGE045
(3)
As shown in Figure 4, △ A 1BA and △ A 1The area sum of DA is rolled piece along half of the difference of the area of plane of the rolling front and back of the first diagonal:
Figure 576295DEST_PATH_IMAGE046
(4)
Because BE and DF are respectively △ A 1BA and △ A 1The height of DA, according to formula (2)-to formula (4), two leg-of-mutton base A A 1, i.e. y kLength be:
Figure 39637DEST_PATH_IMAGE047
(5)
Wherein
Figure 60727DEST_PATH_IMAGE011
It is the one-sided elongation self study coefficient of the drift angle of k piece material.
(3) the rolled piece width behind the calculating angular rolling
Make the extended line of line segment DA and hand over A 1B 1In the G point, then according to geometrical relationship as can be known, ∠ DAF=∠ A 1AG=α k, then the rolled piece width is:
Figure 496388DEST_PATH_IMAGE048
(6)
More than be the geometry derivation that width calculates behind the angular rolling, as benchmark, calculate according to nip inclination angle and the drafts finished width after to angular rolling.But in the actual production, the width of angular rolling also is subject to coming from the impact of following three aspects:: usually also will impose certain edging amount to the limit section of rolled piece through upset pass after a. angular rolling passage, rolled piece is formed certain wide effect that subtracts.B. after the angular rolling passage, the flat shape of rolled piece can not reach the rectangle of how much degree, and this calculating is that it is set up for the basis of rectangle in hypothesis.C. there is certain error in model calculating itself.Therefore consider to adopt exponential smoothing to set up the self-learning method that calculates based on above width.
The self-study method of the present embodiment is not possess under the condition of surveying wide function at the side jig, actual measurement parameter according to the angular rolling process, after the floor projection length on the rolling direction is calculated key value y, again self study coefficient Q is carried out self study when rolling along the first diagonal.Its calculation procedure is as follows:
As shown in Figure 5, cross the C point and make the boost line parallel with roll axis, make line segment AA 1Extended line hand over boost line CK in the K point, connect A, C point, AC is not for rolling the diagonal of front flat material.L ExitBe the outlet length of rolled piece, unit is millimeter; L 1For not rolling front flat material diagonal along the projected length of rolling direction, unit is millimeter.
After roll will turn over asynchronous region length first, sheet material could be from opposite side out, so the length that the outlet length of sheet material can utilize roll to turn over calculates, and its formula is as follows through deriving:
Figure 2456DEST_PATH_IMAGE049
(7)
Wherein Be the length that roll turns over, unit is millimeter;
Figure 288129DEST_PATH_IMAGE015
Be roller radius, unit is millimeter;
Figure 578296DEST_PATH_IMAGE016
The drafts of passage last when rolling along the first diagonal, unit are millimeter;
Figure 943681DEST_PATH_IMAGE020
Be advancing slip value, its algorithm is as follows:
Figure 381615DEST_PATH_IMAGE050
(8)
Wherein,
Figure 5495DEST_PATH_IMAGE022
The exit thickness of passage last when rolling along the first diagonal;
Figure 399436DEST_PATH_IMAGE023
The inlet thickness of passage last when rolling along the first diagonal.
Calculating roll according to time and roll rotational speed turns over length and is:
Figure 512885DEST_PATH_IMAGE051
(9)
Wherein,
Figure 375799DEST_PATH_IMAGE017
Be the mill speed curvilinear function of rolled piece, be predefined value;
Figure 600107DEST_PATH_IMAGE018
Be start time point, the time point of namely nipping is got when nipping signal when detecting
Figure 615599DEST_PATH_IMAGE018
=0.
Figure 837633DEST_PATH_IMAGE019
The time of having nipped for roll.
Formula (9) substitution formula (7) can be got the outlet length of sheet material, namely roll rear diagonal and along the floor projection length of rolling direction be:
Figure 984580DEST_PATH_IMAGE052
(10)
According to the boost line CK that does, AK and AC, carry out geometry and derive, do not roll front flat material diagonal along the projected length L of rolling direction 1For:
Figure 199530DEST_PATH_IMAGE053
(11)
(2) then along the one-sided total elongation actual value of the first diagonal angular rolling
Figure 381113DEST_PATH_IMAGE026
For:
Figure 774048DEST_PATH_IMAGE054
(12)
(3) predict the width of next piece rolled piece based on the self-learning method of exponential smoothing
By measured data to calculating along the first cornerwise floor projection of rolled piece exit thickness on rolling direction
Figure 362286DEST_PATH_IMAGE026
, according to formula (5) inverse self study coefficient
Figure 928397DEST_PATH_IMAGE028
For:
Figure DEST_PATH_IMAGE055
(13)
The self study coefficient calculations of k+1 piece material is:
Figure 902169DEST_PATH_IMAGE056
(14)
According to formula (5) and formula (6), the width predicted value of k+1 piece rolled piece For:
Figure DEST_PATH_IMAGE057
(15)
Wherein It is the one-sided elongation self study coefficient value of k+1 piece rolled piece;
Figure 832713DEST_PATH_IMAGE011
Be the one-sided elongation self study coefficient value of k piece rolled piece, can assert that it is the 1st block of material that self-learning function begins to start, order
Figure 926571DEST_PATH_IMAGE034
Figure 723626DEST_PATH_IMAGE035
Be gain coefficient,
If the length and width of the flat material of rolling k piece and height are respectively 2000 millimeters, 4000 millimeters and 500 millimeters, roller radius is 500 millimeters, the inclination angle of nipping when rolling along the first diagonal is 10 °, the exit thickness of passage last is 450 millimeters when rolling along the first diagonal, the inlet thickness of passage last is 460 millimeters, and the overall reduction when then rolling along the first diagonal is 50 millimeters.The rotating speed of roll is 1000 mm/second at the uniform velocity, i.e. V (t)=1000 mm/second, the time point t1=0 second of nipping, the time point t2=4.89 second of material casting.
The area of plane along the rolling rear rolled piece of the first diagonal For:
The length of line segment BE as shown in Figure 4 is:
Figure DEST_PATH_IMAGE059
In like manner, the length of line segment DF is:
Figure 32061DEST_PATH_IMAGE060
As shown in Figure 4, △ A 1BA and △ A 1The area sum of DA is rolled piece along half of the difference of the area of plane of the rolling front and back of the first diagonal:
Figure DEST_PATH_IMAGE061
Because BE and DF are respectively △ A 1BA and △ A 1The height of DA, according to formula (1)-to formula (5), two leg-of-mutton base A A 1, i.e. the one-sided extension value of the prediction of k piece material
Figure 65876DEST_PATH_IMAGE062
Length be:
Figure 964431DEST_PATH_IMAGE063
Wherein, think that k piece material is the 1st block of material that self-learning function starts, and can make
The width of k piece rolled piece is:
Figure 171739DEST_PATH_IMAGE064
The advancing slip value of passage last when rolling along the first diagonal Algorithm as follows:
Figure 693298DEST_PATH_IMAGE065
Diagonal along the floor projection length of rolling direction is when finishing along the first diagonal is rolling:
Figure 616255DEST_PATH_IMAGE066
The front flat material diagonal of angular rolling is not along the projected length L of rolling direction 1For:
Figure 112964DEST_PATH_IMAGE067
Then k piece material is based on the one-sided overall elongation value along the first diagonal angular rolling of measured data calculating
Figure 918109DEST_PATH_IMAGE026
For:
Figure 909199DEST_PATH_IMAGE068
Length and width and the height of supposing k+1 piece material are respectively 2200 millimeters, 4500 millimeters and 550 millimeters, and the inclination angle of nipping when rolling along the first diagonal is 15 degree, and drafts is 60 millimeters.
According to formula (5) inverse self study coefficient
Figure 437394DEST_PATH_IMAGE028
For:
Figure 918054DEST_PATH_IMAGE069
The self study coefficient calculations of k+1 piece material is:
According to formula (5) and formula (6), the width predicted value of k+1 piece rolled piece
Figure 5276DEST_PATH_IMAGE031
For:
Embodiment 2
The present embodiment and embodiment 1 different place is that the complete rolled piece width value of angular rolling can obtain by surveying wide device on-line measurement, this is surveyed wide device and comprises the hydraulic cylinder of side jig, driving side jig and be installed in position sensor on the hydraulic cylinder, after all rolling passes are finished, by Hydraulic Cylinder side jig rolled piece is carried out holding action, this moment, position sensor can be passed to the L2 Process Control System with the measured value of the finished width of rolled piece, calculate its self study coefficient in order to carry out self study
Figure 803653DEST_PATH_IMAGE028
The inverse formula be:
Figure 521074DEST_PATH_IMAGE072
(16)
Wherein,
Figure 916283DEST_PATH_IMAGE073
Be the angular rolling later width measured value of rolled piece, unit is millimeter.
The width predicted value algorithm of k+1 piece rolled piece is identical with formula (15).
The parameter values identical with embodiment 1 is set, directly measured by the side jig , then to the self study coefficient
Figure 190935DEST_PATH_IMAGE028
The inverse formula be:
According to formula (5) and formula (6), the width predicted value of k+1 piece rolled piece
Figure 843819DEST_PATH_IMAGE031
For:
Figure 512698DEST_PATH_IMAGE076

Claims (4)

1. the Forecasting Methodology of a flat rectangular material angular rolling width, it is characterized in that: before rolling, according to default overall reduction, the inclination angle of nipping when treating that rolling flat rectangular material blank carries out angular rolling along the first diagonal, calculate first along the area of plane of the rolling rear rolled piece of the first diagonal, according to the elongation of this area of plane numerical computations along the first diagonal two ends drift angle of the rolling rear rolled piece of the first diagonal, again by the rolled piece width behind this elongation calculating angular rolling, when the rolled piece width of this precomputation satisfies production requirement, carry rolling to milling train; When rolling, go out current self study coefficient at rolled piece according to online actual measurement parameter inverse, adopt exponential smoothing, the self study coefficient when calculating next piece rolled piece and carrying out the width prediction calculates the predicted width of next piece rolled piece with this.
2. the Forecasting Methodology of flat rectangular material angular rolling width according to claim 1 is characterized in that: the following formula of rolled piece width basis behind rolling front prediction angular rolling:
According to the constancy of volume principle, calculate the area of plane along the rolling rear rolled piece of the first diagonal
Figure 656900DEST_PATH_IMAGE001
:
Figure 197602DEST_PATH_IMAGE002
Wherein,
Figure 513177DEST_PATH_IMAGE003
,
Figure 113923DEST_PATH_IMAGE004
With
Figure 514948DEST_PATH_IMAGE005
Be respectively length and width and the height of the flat material rolled piece of k piece;
Figure 859342DEST_PATH_IMAGE006
Be the angular rolling later height of rolled piece;
Figure 295002DEST_PATH_IMAGE007
For along the rolling overall reduction of the first diagonal;
After k piece rolled piece was rolling along the first diagonal, the one-sided elongation of the first diagonal two ends drift angle was y k:
Wherein,
Figure 954971DEST_PATH_IMAGE009
The inclination angle of nipping when being the flat material rolled piece of k piece angular rolling;
Figure 837476DEST_PATH_IMAGE010
Be the self study coefficient that the flat material rolled piece of k piece is carried out adopt when width is predicted;
Rolled piece width behind the calculating angular rolling is:
Wherein,
Figure 804612DEST_PATH_IMAGE012
It is the later width of rolled piece of the flat material angular rolling of k piece.
3. the Forecasting Methodology of flat rectangular material angular rolling width according to claim 2, it is characterized in that: when rolled piece proceeds to passage last along the first diagonal angular rolling, according to the nip online actual measurement parameter of signal, roll rotational speed and time point of rolled piece, calculate the outlet length of rolled piece, calculate on this basis the one-sided elongation of rolled piece, inverse self study coefficient; The following formula of the basis of the predicted width of next piece rolled piece:
The projected length of diagonal on rolling direction when (1) calculating is rolling along the first diagonal, its formula is as follows:
Figure 180230DEST_PATH_IMAGE013
Wherein,
Figure 866426DEST_PATH_IMAGE014
Be the length that roll turns over, unit is millimeter;
Figure 8170DEST_PATH_IMAGE015
Be roller radius, unit is millimeter; The drafts of passage last when rolling along the first diagonal, unit are millimeter;
Figure 984533DEST_PATH_IMAGE017
Be the mill speed curvilinear function of rolled piece, be predefined value;
Figure 208841DEST_PATH_IMAGE018
Be start time point, the time point of namely nipping is got when nipping signal when detecting
Figure 473601DEST_PATH_IMAGE018
=0; The time of having nipped for roll;
Figure 842582DEST_PATH_IMAGE020
Be advancing slip value, its algorithm is as follows:
Figure 870581DEST_PATH_IMAGE021
Wherein,
Figure 989847DEST_PATH_IMAGE022
The exit thickness of passage last when rolling along the first diagonal;
Figure 445099DEST_PATH_IMAGE023
The inlet thickness of passage last when rolling along the first diagonal;
The diagonal for the treatment of rolling flat rectangular material blank before not rolling is along the projected length of rolling direction
Figure 282605DEST_PATH_IMAGE024
For:
Figure 848715DEST_PATH_IMAGE025
(2) along the one-sided total elongation actual value of the first diagonal angular rolling
Figure 822488DEST_PATH_IMAGE026
For:
Figure 448641DEST_PATH_IMAGE027
(3) based on the self-learning method of exponential smoothing
Utilization is calculated by on-line parameter
Figure 507864DEST_PATH_IMAGE026
Come inverse self study coefficient For:
Figure 974453DEST_PATH_IMAGE029
The self study coefficient calculations of k+1 piece material is:
Figure 771508DEST_PATH_IMAGE030
The width predicted value of k+1 piece rolled piece
Figure 318027DEST_PATH_IMAGE031
For:
Figure 225940DEST_PATH_IMAGE032
Wherein
Figure 236621DEST_PATH_IMAGE033
It is the one-sided elongation self study coefficient value of k+1 piece rolled piece;
Figure 142260DEST_PATH_IMAGE010
Be the one-sided elongation self study coefficient value of k piece rolled piece, can assert that it is the 1st block of material that self-learning function begins to start, order
Figure 238392DEST_PATH_IMAGE034
Figure 887679DEST_PATH_IMAGE035
Be gain coefficient,
Figure 18446DEST_PATH_IMAGE036
4. the Forecasting Methodology of flat rectangular material angular rolling width according to claim 2 is characterized in that: according to the online actual measurement parameter of rolled piece width behind the angular rolling, directly inverse goes out current self study coefficient at rolled piece
Figure 94987DEST_PATH_IMAGE028
, the self study coefficient
Figure 350519DEST_PATH_IMAGE028
The inverse formula be:
Figure 865814DEST_PATH_IMAGE037
The self study coefficient calculations of k+1 piece material is:
Figure 788770DEST_PATH_IMAGE038
The width predicted value of k+1 piece rolled piece
Figure 98529DEST_PATH_IMAGE031
For:
Wherein,
Figure 894764DEST_PATH_IMAGE033
It is the one-sided elongation self study coefficient value of k+1 piece rolled piece;
Figure 669297DEST_PATH_IMAGE010
Be the one-sided elongation self study coefficient value of k piece rolled piece, can assert that it is the 1st block of material that self-learning function begins to start, order
Figure 149957DEST_PATH_IMAGE034
Figure 645660DEST_PATH_IMAGE035
Be gain coefficient,
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CN109719137A (en) * 2018-12-29 2019-05-07 中冶京诚工程技术有限公司 Steel plate corner control method, device and equipment for corner rolling and storage medium
CN112427462A (en) * 2019-08-26 2021-03-02 中冶京诚工程技术有限公司 Thick plate width expansion mode control method and device
CN112747679A (en) * 2020-12-23 2021-05-04 河南中原光电测控技术有限公司 Width measuring device, width measuring method, and computer-readable medium storing width measuring program
CN114632817A (en) * 2022-02-22 2022-06-17 南京钢铁股份有限公司 Rolling method of wide and thick plate rolling mill
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CN114632817A (en) * 2022-02-22 2022-06-17 南京钢铁股份有限公司 Rolling method of wide and thick plate rolling mill
CN116651933A (en) * 2023-08-02 2023-08-29 东北大学 Corner rolling method and device for plate and storage medium
CN116651933B (en) * 2023-08-02 2023-09-29 东北大学 Corner rolling method and device for plate and storage medium

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