CN105032945B - A kind of hot tandem plate shape and plate convexity Comprehensive Control merit rating method - Google Patents
A kind of hot tandem plate shape and plate convexity Comprehensive Control merit rating method Download PDFInfo
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Abstract
A kind of hot tandem plate shape and plate convexity Comprehensive Control merit rating method, it mainly includes following the step of performed by computer：1st, mill data and band technological parameter are collected；2nd, calculated in the minimax convexity that last frame band convexity is in the range of tolerance and each frame plate shape is allowed when good according to band technological parameter；3rd, according to mill data calculate each frame plate shape control parameter reach capacity state when loading roll gap minimax convexity；4th, each frame plate shape and plate convexity control ability evaluation index of hot tandem and continuous hot-rolling mill plate shape and plate convexity Comprehensive Control indexes of capability evaluation are formed.The invention provides a kind of hot tandem plate shape and plate convexity Comprehensive Control merit rating method, the method considers the Strip Shape Control parameter of milling train and the technological parameter of rolled strip, so that the band for meeting plate shape and plate convexity quality requirement can be produced as target, the plate shape and plate convexity Comprehensive Control ability of quantitative assessment continuous hot-rolling mill, more conforms to actual production situation.
Description
Technical field
The invention belongs to metallurgy rolling technical field, more particularly to a kind of hot tandem plate shape and plate convexity Comprehensive Control energy
Power evaluation method.
Background technology
Plate shape and plate convexity control device main at present is hydraulic bending roll, roll mandrel is moved, roll intersects etc..Wherein hydraulic pressure is curved
Roller is exploitation and applies earliest Strip Shape Control technology, and its operation principle is to change roll roll force distribution by roll-bending device
With roll flexural deformation, still it is widely used so far.Roll mandrel moves class rolling mill main and will be divided into two classes, and a class is HC and its derivation
Other roll axisshifting rolling mills out, as such milling train eliminates the contact beyond bandwidth between working roll and intermediate calender rolls, from
And reduce working roll amount of deflection and strip side portion is thinning, and can be adjusted as needed, the ability of Strip Shape Control is improve, because
And be widely used at present, another kind of is CVC series rolling mills, and the milling train adopts S type roller curves, and is in antisymmetry cloth
Put, the roll gap shape in the range of rolling width is changed by roll shift, so as to improve the plate shape and plate convexity control ability of milling train.
Typical roll cross milling train is PC milling trains, and being intersected by top and bottom rolls in pairs makes the minimum clearance between double-working along plate width
Direction is in symmetrical parabolic shape, so as to produce plate shape and plate convexity control effect.At present HC series models be mainly used in it is cold rolling,
The main type that continuous hot-rolling mill is used is normal four-roller, CVC four-high mills and PC four-high mills.
Both at home and abroad for the plate shape of various different continuous hot-rolling mill types has been carried out widely with strip crown control ability
Analysis, but all of analysis is conceived to merely the plate shape and strip crown control ability of milling train itself, ignores the effect of milling train
The plate shape and plate convexity control ability of object --- band, actually milling train might not produce by force the optimal product of mass
Product.Only mill capacity is combined with band actual process parameter and can more conform to the actual plate shape plate to milling train
Convexity Comprehensive Control ability is analyzed and evaluated.
The content of the invention
It is an object of the invention to provide a kind of hot tandem plate shape and plate convexity Comprehensive Control merit rating method, this
The bright Strip Shape Control parameter for mainly considering milling train and rolled strip technological parameter, are conformed to quality requirements with producing
Band be target, the plate shape and plate convexity Comprehensive Control ability of quantitative assessment continuous hot-rolling mill.
The hot tandem plate shape and plate convexity Comprehensive Control merit rating method of the present invention mainly includes following by computer
The step of execution：
A, collection mill data and band technological parameter, specifically include：
A1, collection continuous hot-rolling mill parameter：Tandem mill frame number n, each frame working roll barrel length Lwi, each frame working roll
Diameter Dwi, each frame support roller barrel length Lbi, each frame support roller diameter Dbi, each frame support roller roll neck diameter Dbni, it is each
Frame working roll bending cylinder spacing L1i, each frame depress oil cylinder centre-to-centre spacing L3i, 1 term coefficient of each frame working roller curve3 term coefficients5 term coefficientsThe initial grinding roller side-play amount of each frame working rollerEach frame support roller roller
1 term coefficient of type curve3 term coefficients5 term coefficientsEach frame work roll bending power upper and lower limitEach frame working roll roll shifting amount upper and lower limitEach breast roller angle of the crossing upper and lower limit
A2, collection band technological parameter：Supplied materials width B, supplied materials thicknessSupplied materials convexity C0, each stand stretch drag σsi,
Each rack outlet thicknessFirst frame entrance tension force T0, each rack outlet tension force Ti, each frame coefficientoffrictionμi, target convexity
Cob, upper lower deviation tol of target convexity permission；
B, calculated in last frame band convexity in the range of the tolerance and each frame plate according to band technological parameter
The minimax convexity allowed when shape is good, specifically includes：
B1, make i=n；
B2, the last rack outlet convexity of calculating allow maximum Cmaxn=Cob+tol；
B3, the last rack outlet convexity of calculating allow minimum of a value Cminn=Cob-tol；
B4, according to equal proportion convexity principle calculate the i-th -1 rack outlet convexity maximum
B5, according to equal proportion convexity principle calculate the i-th -1 rack outlet convexity minimum of a value
B6, judge whether i=2 sets up, if set up, proceed to b7；Otherwise, i=i-1 is made, proceeds to b4；
B7, i=1 is made, intermediate variable Cmax0=C0；
B8, judgementIt is more thanWhether set up, if set up, proceed to b9；Otherwise, turn
Enter b10；
B9, make Cmaxi-1=Cmaxi-1+0.05|Cmaxi-1|, proceed to b8；
B10, judgementIt is less thanWhether set up, if set up, proceed to b11；It is no
Then, proceed to b12；
B11, make Cmaxi-1=Cmaxi-1-0.05|Cmaxi-1|, proceed to b10；
B12, judge whether i=n sets up, if set up, proceed to b13；Otherwise, i=i+1 is made, proceeds to b8；
B13, i=1 is made, intermediate variable Cmin0=C0；
B14, judgementIt is more thanWhether set up, if set up, proceed to b15；It is no
Then, proceed to b16；
b15、Cmini-1=Cmini-1+0.05|Cmini-1|, proceed to b14；
B16, judgementIt is less thanWhether set up, if set up, proceed to b17；Otherwise
Proceed to b18；
B17, make Cmini-1=Cmini-1-0.05|Cmini-1|, proceed to b16；
B18, judge whether i=n sets up, if set up, proceed to c；Otherwise, i=i+1 is made, proceeds to b14；
The minimax of loading roll gap when c, the state that reached capacity according to each frame plate shape control parameter of mill data calculating
Convexity, specifically includes：
C1, make i=1；
C2, by band technological parameter supplied materials width B, supplied materials thicknessEach stand stretch drag σsi, each rack outlet thicknessFirst frame entrance tension force T0, each rack outlet tension force Ti, each frame coefficientoffrictionμiAs |input paramete, according to roll-force
Formula calculates the i-th frame roll-force Pi；
C3, make the i-th frame work roll bending powerI-th frame working roll roll shifting amountI-th machine
The frame roll angle of the crossingBy the i-th frame roll-force Pi, the i-th frame working roll barrel length Lwi, work roll diameter Dwi,
Support roller barrel length Lbi, support roller diameter Dbi, support roller roll neck diameter Dbni, working roll bending cylinder spacing L1i, depress oil cylinder
Centre-to-centre spacing L3i, 1 term coefficient of working roller curve3 term coefficients5 term coefficientsWorking roller is initial
Grinding roller side-play amount1 term coefficient of support roller roller curve3 term coefficients5 term coefficientsAnd S1i,RSwi,
θiAs |input paramete, according to roll elastic deformation theoretical calculation the i-th frame loading roll gap convexity maximum
C4, make the i-th frame work roll bending powerI-th frame working roll roll shifting amountI-th machine
The frame roll angle of the crossingBy the i-th frame roll-force Pi, the i-th frame working roll barrel length Lwi, work roll diameter Dwi,
Support roller barrel length Lbi, support roller diameter Dbi, support roller roll neck diameter Dbni, working roll bending cylinder spacing L1i, depress oil cylinder
Centre-to-centre spacing L3i, 1 term coefficient of working roller curve3 term coefficients5 term coefficientsWorking roller is initial
Grinding roller side-play amount1 term coefficient of support roller roller curve3 term coefficients5 term coefficientsAnd S1i,RSwi,
θiAs |input paramete, according to roll elastic deformation theoretical calculation the i-th frame loading roll gap convexity minimum of a value
C5, judge whether i=n sets up, if set up, proceed to d；If be false, i=i+1 is made, proceed to c2；
D, each frame plate shape and plate convexity control ability evaluation index index of formation hot tandemiWith continuous hot-rolling mill plate shape
Strip crown Comprehensive Control indexes of capability evaluation index, specifically includes：
D1, make i=1；
D2, judgementAndWhether set up, if set up, order
Proceed to d8；Otherwise, proceed to d3；
D3, judgementAndWhether set up, if set up, make indexi=1, proceed to d8；
Otherwise, proceed to d4；
D4, judgementWhether set up, if set up, make indexi=0, proceed to d8；Otherwise, proceed to d5；
D5, judgementWhether set up, if set up, make indexi=0, proceed to d8；Otherwise, proceed to d6；
D6, judgementAndWhether set up, if set up, order
Proceed to d8；Otherwise, proceed to d7；
D7, orderProceed to d8；
D8, judge whether i=n sets up, if set up, proceed to d9；If be false, i=i+1 is made, proceed to d2；
D9, calculatingAccording to the numerical value of index to hot tandem plate shape and plate convexity Comprehensive Control energy
Power is evaluated, and the span of index is 0～n, and its numerical value is bigger, it was demonstrated that milling train is for given Strip Shape strip crown
Comprehensive Control ability is stronger, and its numerical value is less, it was demonstrated that milling train is weaker for given Strip Shape strip crown Comprehensive Control ability,
Terminate.
The present invention is had the advantage that compared with prior art：
The present invention not only allows for the tool of production when the plate shape and plate convexity control ability for carrying out continuous hot-rolling mill is evaluated ---
The control ability that the control ability of milling train, it is also contemplated that workpiece --- band itself itself needs, by the present invention can be quantitative
Evaluate whether a set of specific tandem mill can produce the plate shape specific standard band completely qualified with strip crown, can both protect
The control ability of card milling train meets needs of production, can avoid the waste of milling train control ability and equipment investment again.
Description of the drawings
Fig. 1 is that the present invention calculates general flow chart.
Fig. 2 is the calculation flow chart of step b of the present invention.
Fig. 3 is the calculation flow chart of step c of the present invention.
Fig. 4 is the calculation flow chart of step d of the present invention.
Specific embodiment
Embodiment 1
A kind of hot tandem plate shape and plate convexity Comprehensive Control merit rating method, to certain 6 frame normal four-roller hot continuous rolling
The evaluation procedure of unit plate shape and plate convexity Comprehensive Control ability, as shown in figure 1, first in step a, collecting mill data and band
Material technological parameter, specifically includes：
A1, collection continuous hot-rolling mill parameter：It is 1750mm, each machine that tandem mill frame number is 6, each frame working roll barrel length
It is 1750mm, a diameter of 1430mm of each frame support roller, each that frame work roll diameter is 710mm, each frame support roller barrel length
Frame support roller roll neck diameter is 955mm, each frame working roll bending cylinder spacing is 3000mm, each frame pressure oil cylinder centre-to-centre spacing
For 2900mm, 1 term coefficient of each frame working roller curve be 0mm, 3 term coefficients be 0mm, 5 term coefficients be 0mm, respectively
The initial grinding roller deviation of frame working roller curve is 0mm, and each 1 term coefficient of frame support roller roller curve is 0mm, 3 items
It is 0mm that coefficient is 0mm, 5 term coefficients, each frame work roll bending power upper and lower limit be respectively 1500kN, 0, each frame working roll
Roll shifting amount upper and lower limit is respectively 0mm, 0mm, each breast roller angle of the crossing is upper and lower be 0, i.e. milling train without roll roll shifting with intersect
Function；
A2, collection band technological parameter：Supplied materials width 1550mm, supplied materials thickness 40mm, supplied materials convexity 0.8mm, the first machine
Frame resistance of deformation is 132MPa, the second stand stretch drag is 158MPa, the 3rd stand stretch drag is 174MPa, the 4th frame
Resistance of deformation be 184MPa, the 5th stand stretch drag be 190MPa, the 6th stand stretch drag be 181MPa, the first frame goes out
Mouth thickness is 23.7mm, the second rack outlet thickness is 14.04mm, the 3rd rack outlet thickness is 9.27mm, the 4th frame goes out
Mouthful thickness be 6.71mm, the 5th rack outlet thickness be 5.05mm, the 6th rack outlet thickness be 4.11mm, the first frame entrance
Tension force and each rack outlet tension force are 0, and each frame coefficient of friction is 0.3, and target convexity is 0.04mm, and target convexity permits
Perhaps lower deviation is gone up for 0.02mm；
Subsequently, in stepb, as shown in Fig. 2 being calculated in last frame band convexity in permission according to band technological parameter
The minimax convexity allowed in deviation range and when each frame band outlet plate shape is good, calculates according to parameter given in a
Go out the first frame to allow maximum convexity is 0.345985mm, and it is 0.115328mm that the first frame allows minimum convexity；Second frame
Maximum convexity is allowed to be 0.204964mm, it is 0.0683212mm that the second frame allows minimum convexity；3rd frame allows maximum convex
Spend for 0.135328mm, it is 0.0451095mm that the 3rd frame allows minimum convexity；4th frame allows the maximum convexity to be
0.0979562mm, it is 0.0326521mm that the 4th frame allows minimum convexity；5th frame allows the maximum convexity to be
0.0737226mm, it is 0.0245742mm that the 5th frame allows minimum convexity；It is 0.06mm that 6th frame allows maximum convexity, the
It is 0.02mm that six frames allow minimum convexity；
Subsequently, in step c, as shown in figure 3, be calculated the first frame roll-force according to roll-force formula being
24650.4kN, the second frame roll-force are 26347kN, the 3rd frame roll-force is 22434.6kN, the 4th frame roll-force is
18398.4kN, the 5th frame roll-force are 16682.7kN, the 6th frame roll-force is 11813.9kN, are become according to roller system elasticity
The each frame plate shape control parameter of shape theoretical calculation reach capacity state when loading roll gap minimax convexity, the first frame load roller
The maximum convexity of seam is 0.49992mm, and the first frame loading roll gap minimum convexity is 0.22959mm；Second frame loading roll gap is most
Big convexity is 0.39239mm, and the second frame loading roll gap minimum convexity is 0.12227mm；3rd frame loading roll gap maximum is convex
Spend for 0.21325mm, the 3rd frame loading roll gap minimum convexity is -0.0585mm；4th frame loading roll gap maximum convexity be
0.06534mm, the 4th frame loading roll gap minimum convexity is -0.2084mm；5th frame loading roll gap maximum convexity be
0.05372mm, the 5th frame loading roll gap minimum convexity is -0.1479mm；6th frame loading roll gap maximum convexity be
0.08031mm, the 6th frame loading roll gap minimum convexity is -0.123mm；
Subsequently, in step d, as shown in figure 4, according to step b and step c result, being calculated the control of the first frame
Indexes of capability evaluation is that the control ability that the control ability evaluation index of the 0.5046, second frame is the 0.6052, the 3rd frame is commented
Valency index is that the control ability evaluation index that the control ability evaluation index of the 1, the 4th frame is the 0.5005, the 5th frame is
0.5930th, the control ability evaluation index of the 6th frame is 1, finally gives the comprehensive plate shape and plate convexity control energy of hot tandem
Power is 4.2034, differs larger with maximum 6, illustrates that the milling train there is weaker plate shape and plate convexity to control for given band
Ability, calculating terminate.
Embodiment 2
The detailed process for evaluating certain 6 frame four-roller CVC hot tandem plate shape and plate convexity Comprehensive Control ability given below：
First, in step a, mill data and band technological parameter are collected, is specifically included：
A1, collection continuous hot-rolling mill parameter：It is 2000mm, each machine that tandem mill frame number is 6, each frame working roll barrel length
It is 1750mm, a diameter of 1430mm of each frame support roller, each that frame work roll diameter is 710mm, each frame support roller barrel length
Frame support roller roll neck diameter is 955mm, each frame working roll bending cylinder spacing is 3000mm, each frame pressure oil cylinder centre-to-centre spacing
For 2900mm, the first item of frame working roller curve 1 time be -0.5954mm, 3 items be 1.1696mm, 5 items for -
01002mm, initial grinding roller deviation are -92mm, and the second item of frame working roller curve 1 time is -0.5778mm, 3 items are
It is -59mm that 1.1646mm, 5 items are -0.0995mm, initial grinding roller deviation, the 3rd item of frame working roller curve 1 time for -
0.5458mm, 3 items be 1.0840mm, 5 items be -0.0928mm, initial grinding roller deviation be -18mm, the 4th frame working roll
1 item of roller curve be -0.5458mm, 3 items be 1.0840mm, 5 items be -0.0928mm, initial grinding roller deviation for -
18mm, the 5th item of frame working roller curve 1 time is -0.5458mm, 3 items are 1.0840mm, 5 items are -0.0928mm,
Initial grinding roller deviation is -18mm, the 6th item of frame working roller curve 1 time be -0.4526mm, 3 items be 0.9288mm, 5
It is 0 that secondary item is -0.0796mm, initial grinding roller deviation, each 1 item of frame support roller roller curve be 0mm, 3 items be 0mm, 5 times
Be 0mm, each frame work roll bending power upper and lower limit be respectively 1500kN, 0, each frame working roll roll shifting amount upper and lower limit difference
For 125mm, 125mm, upper and lower 0, the i.e. milling train of being of each breast roller angle of the crossing is without roll interleaving function；
A2, collection band technological parameter：Supplied materials width 1550mm, supplied materials thickness 40mm, supplied materials convexity 0.8mm, the first machine
Frame resistance of deformation is 132MPa, the second stand stretch drag is 158MPa, the 3rd stand stretch drag is 174MPa, the 4th frame
Resistance of deformation is 184MPa, the 5th stand stretch drag is 190MPa, the 6th stand stretch drag is 181MPa, the first frame goes out
Mouth thickness is 23.7mm, the second rack outlet thickness is 14.04mm, the 3rd rack outlet thickness is 9.27mm, the 4th frame goes out
Mouth thickness is 6.71mm, the 5th rack outlet thickness is 5.05mm, the 6th rack outlet thickness is 4.11mm, the first frame entrance
Tension force and each rack outlet tension force be 0, each frame coefficient of friction be 0.3, target convexity for 0.04mm, target convexity permit
Perhaps lower deviation is gone up for 0.02mm；
Subsequently, in stepb, calculated in last frame band convexity in the range of tolerance according to band technological parameter
And the minimax convexity that each frame band outlet plate shape is allowed when good, calculates the first frame according to parameter given in a
Maximum convexity is allowed to be 0.345985mm, it is 0.115328mm that the first frame allows minimum convexity；Second frame allows maximum convex
Spend for 0.204964mm, it is 0.0683212mm that the second frame allows minimum convexity；3rd frame allows the maximum convexity to be
0.135328mm, it is 0.0451095mm that the 3rd frame allows minimum convexity；4th frame allows the maximum convexity to be
0.0979562mm, it is 0.0326521mm that the 4th frame allows minimum convexity；5th frame allows the maximum convexity to be
0.0737226mm, it is 0.0245742mm that the 5th frame allows minimum convexity；It is 0.06mm that 6th frame allows maximum convexity, the
It is 0.02mm that six frames allow minimum convexity；
Subsequently, in step c, the first frame roll-force is calculated for 24650.4kN, the second machine according to roll-force formula
Frame roll-force is 26347kN, the 3rd frame roll-force is 22434.6kN, the 4th frame roll-force is 18398.4kN, the 5th machine
Frame roll-force is 16682.7kN, the 6th frame roll-force is 11813.9kN, according to each frame of roll elastic deformation theoretical calculation
Strip Shape Control parameter reach capacity state when loading roll gap minimax convexity, the first frame loading roll gap maximum convexity be
0.701632mm, the first frame loading roll gap minimum convexity is -0.182918mm；Second frame loading roll gap maximum convexity be
0.632901mm, the second frame loading roll gap minimum convexity is -0.252141mm；3rd frame loading roll gap maximum convexity be
0.481267mm, the 3rd frame loading roll gap minimum convexity is -0.362954mm；4th frame loading roll gap maximum convexity be
0.370794mm, the 4th frame loading roll gap minimum convexity is -0.473415mm；5th frame loading roll gap maximum convexity be
0.358548mm, the 5th frame loading roll gap minimum convexity is -0.412614mm；6th frame loading roll gap maximum convexity be
0.323544mm, the 6th frame loading roll gap minimum convexity is -0.365433mm；
Subsequently, in step d, according to step b and step c result, the control ability evaluation for being calculated the first frame refers to
It is the 1, the 4th frame that the control ability evaluation index for being designated as the 1, second frame is the control ability evaluation index of the 1, the 3rd frame
Control ability evaluation index is the control ability evaluation index that the control ability evaluation index of the 1, the 5th frame is the 1, the 6th frame
For 1, the comprehensive plate shape and plate convexity control ability for finally giving hot tandem is equal to maximum 6, illustrates the milling train for given
Band there is very strong plate shape and plate convexity control ability, the plate shape and strip crown control for being fully able to meet the band is required,
Calculating terminates.
Claims (1)
1. a kind of hot tandem plate shape and plate convexity Comprehensive Control merit rating method, it is characterised in that：It includes following by counting
The step of calculation machine is performed：
A, collection mill data and band technological parameter, specifically include：
A1, collection continuous hot-rolling mill parameter：Tandem mill frame number n, each frame working roll barrel length Lwi, each frame work roll diameter
Dwi, each frame support roller barrel length Lbi, each frame support roller diameter Dbi, each frame support roller roll neck diameter Dbni, each frame
Working roll bending cylinder spacing L1i, each frame depress oil cylinder centre-to-centre spacing L3i, 1 term coefficient of each frame working roller curve3
Secondary term coefficient5 term coefficientsThe initial grinding roller side-play amount of each frame working rollerEach frame support roller roll shape is bent
1 term coefficient of line3 term coefficients5 term coefficientsEach frame work roll bending power upper and lower limit
Each frame working roll roll shifting amount upper and lower limitEach breast roller angle of the crossing upper and lower limit
A2, collection band technological parameter：Supplied materials width B, supplied materials thicknessSupplied materials convexity C0, each stand stretch drag σsi, each machine
Frame exit thicknessFirst frame entrance tension force T0, each rack outlet tension force Ti, each frame coefficientoffrictionμi, target convexity Cob,
Target convexity allows upper lower deviation tol；
B, calculated last frame band convexity is in the range of the tolerance and each frame plate shape is good according to band technological parameter
The minimax convexity allowed when good, specifically includes：
B1, make i=n；
B2, the last rack outlet convexity of calculating allow maximum Cmaxn=Cob+tol；
B3, the last rack outlet convexity of calculating allow minimum of a value Cminn=Cob-tol；
B4, according to equal proportion convexity principle calculate the i-th -1 rack outlet convexity maximum
B5, according to equal proportion convexity principle calculate the i-th -1 rack outlet convexity minimum of a value
B6, judge whether i=2 sets up, if set up, proceed to b7；Otherwise, i=i-1 is made, proceeds to b4；
B7, i=1 is made, intermediate variable Cmax0=C0；
B8, judgementIt is more thanWhether set up, if set up, proceed to b9；Otherwise, proceed to
b10；
B9, make Cmaxi-1=Cmaxi-1+0.05|Cmaxi-1|, proceed to b8；
B10, judgementIt is less thanWhether set up, if set up, proceed to b11；Otherwise, turn
Enter b12；
B11, make Cmaxi-1=Cmaxi-1-0.05|Cmaxi-1|, proceed to b10；
B12, judge whether i=n sets up, if set up, proceed to b13；Otherwise, i=i+1 is made, proceeds to b8；
B13, i=1 is made, intermediate variable Cmin0=C0；
B14, judgementIt is more thanWhether set up, if set up, proceed to b15；Otherwise, proceed to
b16；
b15、Cmini-1=Cmini-1+0.05|Cmini-1|, proceed to b14；
B16, judgementIt is less thanWhether set up, if set up, proceed to b17；Otherwise proceed to
b18；
B17, make Cmini-1=Cmini-1-0.05|Cmini-1|, proceed to b16；
B18, judge whether i=n sets up, if set up, proceed to c；Otherwise, i=i+1 is made, proceeds to b14；
The minimax convexity of loading roll gap when c, the state that reached capacity according to each frame plate shape control parameter of mill data calculating,
Specifically include：
C1, make i=1；
C2, by band technological parameter supplied materials width B, supplied materials thicknessEach stand stretch drag σsi, each rack outlet thicknessThe
One frame entrance tension force T0, each rack outlet tension force Ti, each frame coefficientoffrictionμiAs |input paramete, according to roll-force formula
Calculate the i-th frame roll-force Pi；
C3, make the i-th frame work roll bending powerI-th frame working roll roll shifting amountI-th frame is rolled
The roller angle of the crossingBy the i-th frame roll-force Pi, the i-th frame working roll barrel length Lwi, work roll diameter Dwi, support
Roller barrel length Lbi, support roller diameter Dbi, support roller roll neck diameter Dbni, working roll bending cylinder spacing L1i, pressure oil cylinder center
Away from L3i, 1 term coefficient of working roller curve3 term coefficients5 term coefficientsThe initial grinding roller of working roller
Side-play amount1 term coefficient of support roller roller curve3 term coefficients5 term coefficientsAnd S1i,RSwi,θiMake
For |input paramete, according to roll elastic deformation theoretical calculation the i-th frame loading roll gap convexity maximum
C4, make the i-th frame work roll bending powerI-th frame working roll roll shifting amountI-th frame is rolled
The roller angle of the crossingBy the i-th frame roll-force Pi, the i-th frame working roll barrel length Lwi, work roll diameter Dwi, support
Roller barrel length Lbi, support roller diameter Dbi, support roller roll neck diameter Dbni, working roll bending cylinder spacing L1i, pressure oil cylinder center
Away from L3i, 1 term coefficient of working roller curve3 term coefficients5 term coefficientsThe initial grinding roller of working roller
Side-play amount1 term coefficient of support roller roller curve3 term coefficients5 term coefficientsAnd S1i,RSwi,θiMake
For |input paramete, according to roll elastic deformation theoretical calculation the i-th frame loading roll gap convexity minimum of a value
C5, judge whether i=n sets up, if set up, proceed to d；If be false, i=i+1 is made, proceed to c2；
D, each frame plate shape and plate convexity control ability evaluation index index of formation hot tandemiWith continuous hot-rolling mill plate shape and plate convexity
Comprehensive Control indexes of capability evaluation index, specifically includes：
D1, make i=1；
D2, judgementAndWhether set up, if set up, order
Proceed to d8；Otherwise, proceed to d3；
D3, judgementAndWhether set up, if set up, make indexi=1, proceed to d8；Otherwise,
Proceed to d4；
D4, judgementWhether set up, if set up, make indexi=0, proceed to d8；Otherwise, proceed to d5；
D5, judgementWhether set up, if set up, make indexi=0, proceed to d8；Otherwise, proceed to d6；
D6, judgementAndWhether set up, if set up, order
Proceed to d8；Otherwise, proceed to d7；
D7, orderProceed to d8；
D8, judge whether i=n sets up, if set up, proceed to d9；If be false, i=i+1 is made, proceed to d2；
D9, calculatingHot tandem plate shape and plate convexity Comprehensive Control ability is entered according to the numerical value of index
Row is evaluated, and the span of index is 0～n, and its numerical value is bigger, it was demonstrated that milling train is for given Strip Shape strip crown synthesis
Control ability is stronger, and its numerical value is less, it was demonstrated that milling train is weaker for given Strip Shape strip crown Comprehensive Control ability, knot
Beam.
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| CN201510395588.XA CN105032945B (en) | 2015-07-08 | 2015-07-08 | A kind of hot tandem plate shape and plate convexity Comprehensive Control merit rating method |
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| CN110624954B (en) * | 2019-10-16 | 2021-01-08 | 北京首钢股份有限公司 | Plate shape control method for hot-rolled thin high-strength weathering steel |
| CN111250548B (en) * | 2020-01-18 | 2021-11-12 | 太原科技大学 | Board convexity prediction method based on kernel partial least square combined support vector machine |
| CN113465476B (en) * | 2021-06-15 | 2022-09-06 | 太原理工大学 | Method for evaluating deformation coordination of multilayer metal rolling composite plate |
| CN115971258B (en) * | 2023-03-20 | 2023-05-16 | 山西建龙实业有限公司 | Control method for strip shape and convexity of hot continuous strip mill |
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| CN101602067B (en) * | 2008-03-08 | 2012-09-05 | 燕山大学 | On-line integrated control method of plate shape and plate crown of UCM continuous cold mill train with five machine frames |
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