CN109290377B - Eight cold mill group plate shape control method for rolling of one kind and system - Google Patents
Eight cold mill group plate shape control method for rolling of one kind and system Download PDFInfo
- Publication number
- CN109290377B CN109290377B CN201811119039.XA CN201811119039A CN109290377B CN 109290377 B CN109290377 B CN 109290377B CN 201811119039 A CN201811119039 A CN 201811119039A CN 109290377 B CN109290377 B CN 109290377B
- Authority
- CN
- China
- Prior art keywords
- rack
- shifting amount
- value
- roll shifting
- plate shape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/42—Control of flatness or profile during rolling of strip, sheets or plates using a combination of roll bending and axial shifting of the rolls
Abstract
The invention discloses a kind of eight cold mill group plate shape control method for rolling and systems.The method and system combine eight cold mill group equipment features and process characteristic, institute's organic frame is comprehensively considered, collaboration sets the initial value and optimizing step-length of each rack roll shifting amount and bending roller force, the influence of eight cold mill group roll shifting amount of quantitative analysis and bending roller force to production board shape, on-line tuning, optimize the bending roller force and roll shifting amount of eight cold mill groups, obtain roll shifting amount and bending roller force optimal value, to control each machine frame rolling mill mill product plate shape according to each rack roll shifting amount optimal value and each rack bending roller force optimal value, so that mkw mill completed belt steel plate shape reaches best, a possibility that generating simultaneously to steel defect is limited to the greatest extent, improve the control precision and stability of eight cold mill group finished product belt plate shapes rolling.
Description
Technical field
The present invention relates to tandem mills Strip Shape Control technical fields, roll more particularly to eight cold mill group plate shapes of one kind
Control method and system processed.
Background technique
The till soleplate shape of Strip product is related with many factors, and not only the physical property of band itself has plate shape very big
It influences, the comprehensive function of various rolling mill practices influences it more complicated.Mkw mill as backing roll back lining bearing and
It joined intermediate calender rolls between working roll, roll is arranged symmetrically by 1-1-2 in tower-shaped, and using intermediate roller driven, intermediate calender rolls do not set curved
Roller and roll shifting function, Strip Shape Control means are mainly two kinds of means of working roll or so roller and working roll play.Wherein, work
Make roller play and belong to static plate shape parameter, does not adjust during the rolling process；Work roll bending belongs to dynamic sheet shape parameter, is rolling
It can dynamically be adjusted during system.It is different from general four-roller, six-high cluster mill, the supporting roller structure of mkw mill and 20 roller Senghis rice
Your milling train is similar, uses multiple back lining bearings by saddle separately more fulcrum supports, equably by saddle by draught pressure
Pass to firm rack, backing roll deflection deformation very little compared with the backing roll of four six-high cluster mills.
However since the mkw mill development time is shorter, domestic and foreign scholars are less to its plate shape research aspect, in practical life
Due to lacking corresponding shape models during production, Strip Shape often can only be adjusted and be controlled by the knowhow of operative employee
System, often has that Strip Shape Control precision and degree of stability are bad.
Summary of the invention
The object of the present invention is to provide a kind of eight cold mill group plate shape control method for rolling and systems, cold to improve eight rollers
The control precision and stability of milling train group finished product belt plate shape rolling.
To achieve the above object, the present invention provides following schemes:
A kind of eight cold mill group plate shape control method for rolling, which comprises
Obtain each rack roll shifting amount of eight cold mill groups and roll shifting amount optimizing step-length；
Production board shape cross direction profiles value is determined according to each rack roll shifting amount；
Eight are determined according to each rack roll shifting amount, the roll shifting amount optimizing step-length and the production board shape cross direction profiles value
Each rack roll shifting amount optimal value of cold mill group；
Obtain each rack bending roller force of eight cold mill groups and bending roller force optimizing step-length；
Production board shape cross direction profiles value is determined according to each rack bending roller force；
Eight are determined according to each rack bending roller force, the bending roller force optimizing step-length and the production board shape cross direction profiles value
Each rack bending roller force optimal value of cold mill group；
Each machine frame rolling mill rolling is controlled according to each rack roll shifting amount optimal value and each rack bending roller force optimal value
Production board shape.
Optionally, described according to each rack roll shifting amount optimal value and each rack bending roller force optimal value controls each machine
After rolling mill mill product plate shape, further includes:
Obtain current production board shape and target flatness；
Judge whether the deviation between the current production board shape and the target flatness is greater than deviation threshold, obtains the
One judging result；
If deviation of first judging result between the current production board shape and the target flatness is greater than inclined
The step of poor threshold value, return each rack bending roller force of eight cold mill groups of the acquisition and bending roller force optimizing step-length.
Optionally, described that production board shape cross direction profiles value is determined according to each rack roll shifting amount, it specifically includes:
According to each rack roll shifting amount and formula
Determine i-th of forward pull cross direction profiles value σ with first band of jth rack1ji；Wherein X1Indicate jth rack left and right roller and
Roll shifting amount；X2Indicate the left and right roller and roll shifting amount of upstream stand；X3Indicate rolling procedure parameter；X4Indicate supplied materials characterisitic parameter；
SljIndicate jth rack working roll transmission side bending roller force；SrjIndicate jth rack working roll fore side bending roller force；δjIndicate jth rack
Working roll roll shifting amount；εjIndicate jth rack reduction ratio；T1jIndicate jth rack forward pull setting value；T0jIndicate the post-tensioning of jth rack
Power setting value；h01iIndicate the thickness cross direction profiles of incoming hot rolled slab；L1iIndicate the plate shape cross direction profiles of incoming hot rolled slab；
According to i-th of the jth rack forward pull cross direction profiles value σ with first band1ji, using formulaDetermine i-th of production board shape cross direction profiles value β with member of jth rackji；Wherein
υ is strip material Poisson's ratio, and E is strip material elasticity modulus.
Optionally, described lateral according to each rack roll shifting amount, the roll shifting amount optimizing step-length and the production board shape
Distribution Value determines each rack roll shifting amount optimal value of eight cold mill groups, specifically includes:
According to i-th of the jth rack production board shape cross direction profiles value β with memberji, using formula
Determine target function value G (Xδ)；Wherein n is strip Cross slat member number；αiFor flatness object curve；φjIndicate jth
Rack outlet plate shape and target flatness similitude discriminant function；ψjIndicate jth rack outlet plate shape and target flatness similitude system
Number；ψ*Penalty function value when display plate shape form is inconsistent；ξ is weighting coefficient；XδIndicate the set of institute's organic frame shifting amount；N is
Rack quantity；Indicate jth frame plate shape control coefrficient；Fj(Xδ) indicate to make jth rack outlet plate shape and target flatness difference
The smallest objective function；
Judge the target function value G (Xδ) whether be less than and compare parameter G, obtain the second judging result；
If second judging result is the target function value G (Xδ) be less than and compare parameter G, enable G=G (Xδ), δ 'j=
δj；
Judge the sum of jth rack roll shifting amount and jth rack roll shifting amount optimizing step-length δj+ΔδjWhether the roll shifting of jth rack is greater than
Measure maximum value δjmax, obtain third judging result；
If the third judging result is δj+Δδj> δjmax(j=1,2 ... n), determines jth rack roll shifting amount optimal value
For δ 'j(the step of j=1,2 ... n), executes each rack bending roller force of eight cold mill groups of the acquisition and bending roller force optimizing step-length；
If the third judging result is δj+ΔδjNo more than δjmax, enable δj=δj+Δδj, return described according to described each
Rack roll shifting amount determines the step of production board shape cross direction profiles value.
A kind of eight cold mill group plate shape roll control systems, the system comprises:
Roll shifting amount and optimizing step-length obtain module, for obtaining each rack roll shifting amount of eight cold mill groups and roll shifting amount optimizing
Step-length；
First production board shape cross direction profiles value determining module, for determining that production board shape is horizontal according to each rack roll shifting amount
To Distribution Value；
Roll shifting amount optimal value determining module, for according to each rack roll shifting amount, the roll shifting amount optimizing step-length and institute
It states production board shape cross direction profiles value and determines each rack roll shifting amount optimal value of eight cold mill groups；
Bending roller force and optimizing step-length obtain module, for obtaining each rack bending roller force of eight cold mill groups and bending roller force optimizing
Step-length；
Second production board shape cross direction profiles value determining module, for determining that production board shape is horizontal according to each rack bending roller force
To Distribution Value；
Bending roller force optimal value determining module, for according to each rack bending roller force, the bending roller force optimizing step-length and institute
It states production board shape cross direction profiles value and determines each rack bending roller force optimal value of eight cold mill groups；
Roll control module, for according to each rack roll shifting amount optimal value and each rack bending roller force optimal value control
Make each machine frame rolling mill mill product plate shape.
Optionally, the system also includes:
Plate shape obtains module, for obtaining current production board shape and target flatness；
Plate shape judgment module, for judging whether the deviation between the current production board shape and the target flatness is big
In deviation threshold, the first judging result is obtained；
Plate shape bias controls, if being the current production board shape and the Target Board for first judging result
Deviation between shape is greater than deviation threshold, returns to each rack bending roller force of eight cold mill groups of the acquisition and bending roller force optimizing step
Long step.
Optionally, the first production board shape cross direction profiles value determining module specifically includes:
Band forward pull cross direction profiles value determination unit, for according to each rack roll shifting amount and formulaDetermine i-th of jth rack with first band
Forward pull cross direction profiles value σ1ji；Wherein X1Indicate the left and right roller and roll shifting amount of jth rack；X2Indicate that the left and right of upstream stand is curved
Roller and roll shifting amount；X3Indicate rolling procedure parameter；X4Indicate supplied materials characterisitic parameter；SljIndicate that jth rack working roll is driven lateral bending
Roller power；SrjIndicate jth rack working roll fore side bending roller force；δjIndicate jth rack working roll roll shifting amount；εjIndicate jth rack
Reduction ratio；T1jIndicate jth rack forward pull setting value；T0jIndicate jth rack backward pull setting value；h01iIndicate incoming hot rolled slab
Thickness cross direction profiles；L1iIndicate the plate shape cross direction profiles of incoming hot rolled slab；
First production board shape cross direction profiles value determination unit, for according to i-th of the jth rack with first band before
Tension cross direction profiles value σ1ji, using formulaDetermine i-th of jth rack with member
Production board shape cross direction profiles value βji；Wherein υ is strip material Poisson's ratio, and E is strip material elasticity modulus.
Optionally, the roll shifting amount optimal value determining module specifically includes:
Target function value determination unit, for i-th of production board shape cross direction profiles value β with member according to jth rackji,
Using formula
Determine target function value G (Xδ)；Wherein n is strip Cross slat member number；αiFor flatness object curve；φjIndicate jth
Rack outlet plate shape and target flatness similitude discriminant function；ψjIndicate jth rack outlet plate shape and target flatness similitude system
Number；ψ*Penalty function value when display plate shape form is inconsistent；ξ is weighting coefficient；XδIndicate the set of institute's organic frame shifting amount；N is
Rack quantity；Indicate jth frame plate shape control coefrficient；Fj(Xδ) indicate to make jth rack outlet plate shape and target flatness difference
The smallest objective function；
Target function value judging unit, for judging the target function value G (Xδ) whether be less than and compare parameter G, it obtains
Second judging result；
Compare parameter determination unit, if being the target function value G (X for second judging resultδ) be less than and compare
Parameter G enables G=G (Xδ), δ 'j=δj；
Roll shifting amount judging unit, for judging the sum of jth rack roll shifting amount and jth rack roll shifting amount optimizing step-length δj+Δδj
Whether jth rack roll shifting amount maximum value δ is greater thanjmax, obtain third judging result；
Roll shifting amount optimal value determination unit, if being δ for the third judging resultj+Δδj> δjmax(j=1,2 ...
N), determine that jth rack roll shifting amount optimal value is δ 'j(j=1,2 ... n), and it is curved to execute eight each racks of cold mill group of the acquisition
The step of roller power and bending roller force optimizing step-length；
Roll shifting amount updating unit, if being δ for the third judging resultj+ΔδjNo more than δjmax, enable δj=δj+Δδj,
Return to described the step of production board shape cross direction profiles value is determined according to each rack roll shifting amount.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
The present invention provides eight cold mill group plate shape control method for rolling of one kind and system, and the method and system combine eight
Cold mill group equipment feature and process characteristic comprehensively consider institute's organic frame, and collaboration sets each rack roll shifting amount and roller
The initial value and optimizing step-length of power, the influence of eight cold mill group roll shifting amount of quantitative analysis and bending roller force to production board shape, online
Adjustment, the bending roller force and roll shifting amount for optimizing eight cold mill groups obtain roll shifting amount and bending roller force optimal value, thus according to each rack
Roll shifting amount optimal value and each rack bending roller force optimal value control each machine frame rolling mill mill product plate shape, so that mkw mill completed belt
Steel plate shape reaches best, while is limited to the greatest extent a possibility that steel defect generation, and eight cold mills are improved
The control precision and stability of group finished product belt plate shape rolling.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the method flow diagram of eight cold mills group plate shape control method for rolling provided by the invention；
Fig. 2 is the system construction drawing of eight cold mills group plate shape roll control system provided by the invention；
Fig. 3 is the corresponding work roll bending of the embodiment of the present invention 1 and roll shifting complex optimum front and rear panel shape contrast curve chart；
Fig. 4 is the corresponding work roll bending of the embodiment of the present invention 2 and roll shifting complex optimum front and rear panel shape contrast curve chart.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of eight cold mill group plate shape control method for rolling and systems, cold to improve eight rollers
The control precision and stability of milling train group finished product belt plate shape rolling.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the method flow diagram of eight cold mills group plate shape control method for rolling provided by the invention.Referring to Fig. 1, originally
The eight cold mill group plate shape control method for rolling that invention provides specifically include:
Step (a): the device parameter and supplied materials parameter of eight cold mill groups are obtained.
Eight cold mill group device parameters and supplied materials parameter specifically include that the barrel length L of working rollw, the roller of intermediate calender rolls
Body length Lm, the barrel length L of backing rollb；The roller diameter D of working rollw, the roller diameter D of intermediate calender rollsm, the roller diameter D of backing rollb；Upper work
Distance of the roller fore side bending roller force to rolling centerlineDistance of the top working roll transmission side bending roller force to rolling centerlineDistance of the bottom working roll fore side bending roller force to rolling centerlineBottom working roll transmission side bending roller force is to rolling center
The distance of lineBack lining bearing of supporting roll center is away from lbF, back lining bearing of supporting roll width Bz, backing axis on a certain branch backing roll
Hold that number (m-1) is a, the angle of the axial connecting line and vertical direction of left side backing roll and intermediate calender rollsStrip material thickness H, it is wide
Spend B, elastic modulus E, Poisson's ratio υ, resistance of deformation k.
Step (b): the Technological Parameters of Rolling Process of eight cold mill groups is obtained.
Eight cold mill group Technological Parameters of Rolling Process specifically include that jth rack mill speed vj, jth rack band pressure
Lower rate ζj, the first rack forward pull T0, jth rack backward pull Tj, set jth rack working roll fore side bending roller force SrjAnd work
Roller transmission side bending roller force SljFor ground state, even:In formulaFor the permission of jth machine frame rolling mill
Maximum positive bending roller force (kN)；Allow maximum negative bending roller force (kN) for jth machine frame rolling mill.
Step (c): given target flatness curvilinear system numerical value determines target flatness curve.
The target flatness curvilinear system numerical value specifically includes that b0、b2、b4.Target flatness curve be for the producer selection and
The standard of the target as Strip Shape Control of setting, it may be horizontal linear, it is also possible to the height of parabola or other forms
Secondary curve, in fact qualitative response operator is desired roll after wire strip in the width direction on longitudinal residual stress point
Cloth.In the present invention, the target flatness curve of the eight cold mills group is high order curve
b0、b2、b4For the coefficient of the target flatness curve.
Step (d): each rack roll shifting amount of eight cold mill groups and roll shifting amount optimizing step-length are obtained.
Given eight cold mill group jth rack roll shifting amount initial value δj(j=1,2 ... m), jth rack roll shifting amount optimizing step
Long Δ δjWith jth rack roll shifting amount maximum value δjmax.M is rack quantity.
Step (e): production board shape cross direction profiles value is determined according to each rack roll shifting amount.
According to the influence model that prediction of plate shape model and eight cold mill group rollers and roll shifting are distributed plate shape, milling train is calculated
Front and back tension cross direction profiles value:
I is that band steel bar member is numbered in formula；σ1iIndicate the first band forward pull cross direction profiles value (MPa) of i-th of band；σ0iIt indicates
The first band backward pull cross direction profiles value (MPa) of i-th of band；h0iIndicate i-th of Distribution Value (mm) with first inlet of rolling mill band；
h1iIndicate i-th of Distribution Value (mm) with first milling train outlet band；LiIndicate the first inlet of rolling mill plate shape Distribution Value (I) of i-th of band；
B indicates strip width (mm)；T0It indicates milling train backward pull setting value (kN)；T1It indicates milling train forward pull setting value (kN).
Bring device parameter, supplied materials parameter and the Technological Parameters of Rolling Process collected in the step (a), (b) into roller system
Elastic deformation model obtains eight cold mill group jth racks i-th with first exit thickness cross direction profiles value:
h1ji=f2(T0j,T1j,εj,Hji,Slj,Srj,δj,σ1ji,σ0ji)
Wherein T0jIt indicates jth machine frame rolling mill backward pull setting value (kN)；T1jIndicate jth machine frame rolling mill forward pull setting value
(kN)；εjIndicate jth rack reduction ratio；HjiIndicate i-th of the strip material thickness with member of jth rack；SljFor jth rack work
Make roller transmission side bending roller force (kN)；SrjFor jth rack working roll fore side bending roller force (kN)；δjFor jth rack working roll roll shifting
It measures (mm)；σ1jiFor i-th of forward pull cross direction profiles value with first band of jth rack；σ0jiFor i-th of band member of jth rack
The backward pull cross direction profiles value of band.
Any machine frame rolling mill of mkw mill can then be gone out with the relationship of roll elastic deformation model according to thickness distribution
Mouth forward pull cross direction profiles value is indicated with following formula:
Wherein σ1jiFor i-th of forward pull cross direction profiles value with first band of jth rack；X1Indicate the left and right of jth rack
Roller and roll shifting amount；X2Indicate the left and right roller and roll shifting amount of upstream stand；X3Indicate rolling procedure parameter；X4Indicate that supplied materials is special
Property parameter；SljIndicate jth rack working roll transmission side bending roller force；SrjIndicate jth rack working roll fore side bending roller force；δjIt indicates
Jth rack working roll roll shifting amount；εjIndicate jth rack reduction ratio；T1jIndicate jth rack forward pull setting value；T0jIndicate jth machine
Frame backward pull setting value；h01iWith L1iRespectively indicate the thickness cross direction profiles and plate shape cross direction profiles of incoming hot rolled slab.
It, can be by any jth machine frame rolling mill of eight roller tandem mills according to the relationship of plate shape and forward pull cross direction profiles value
The distribution of exit plate shape is indicated with formula are as follows:
Wherein βjiIndicate i-th of production board shape cross direction profiles value with member of jth rack；υ is strip material Poisson's ratio, E
For strip material elasticity modulus.
Step (f): judging whether to meet optimizing condition, according to each rack roll shifting amount, the roll shifting amount optimizing step-length
And the production board shape cross direction profiles value determines each rack roll shifting amount optimal value of eight cold mill groups.
Parameter G=1 × 10 are compared in order20, the plate shape cross direction profiles value β that will be calculatedjiIt is updated to objective function:
Determine target function value G (Xδ).Wherein n is strip Cross slat member number；αiFor flatness object curve；φjIndicate jth
Rack outlet plate shape and target flatness similitude discriminant function, φj>=0 display plate shape form it is similar (be all side wave or be all
Middle wave), φj0 display plate shape form of < it is dissimilar (such as one be Bian Lang, one be middle wave)；ψjIndicate jth rack outlet plate
Shape and target flatness likeness coefficient；ψ*Penalty function value when display plate shape form is inconsistent can generally take 5-10；ξ is to add
Weight coefficient；XδIndicate the set of institute's organic frame shifting amount；N is rack quantity；Indicate jth frame plate shape control coefrficient, for
Five Stands Cold Tandem Mill groups, can generally take
Fj(Xδ) indicate to make jth rack outlet plate shape and the smallest objective function of target flatness difference.
Calculating target function value G (Xδ), compare G (Xδ) and G size, if G > G (Xδ), then enable G=G (Xδ), determine jth
Rack roll shifting amount optimal value δ 'j=δj.Judge δjWith δjmaxSize, if δj+Δδj> δjmax(j=1,2 ... n), then enters step
Suddenly (g)；Conversely, enabling δj=δj+Δδj, then return step (e).
Step (g): each rack bending roller force of eight cold mill groups and bending roller force optimizing step-length are obtained.
The jth rack roll shifting amount optimal value δ ' obtained according to step (f)j=δj, by each rack roll shifting amount of eight cold mill groups
It is set as δ 'j(j=1,2 ... n), and given each rack bending roller force initial value of eight cold mill groups isAnd jth rack bending roller force
Optimizing step delta Sj。
Step (h): production board shape cross direction profiles value is determined according to each rack bending roller force.
According to eight cold mill groups, newly given each rack bending roller force calculates production board shape cross direction profiles value βji.Given next
Expect characterisitic parameter X4With rolling procedure parameter X3In the case where, plate shape Distribution Value can be write as βji=f4(X1,X2) form.Then eight
I-th of any jth machine frame rolling mill of roller tandem mills is write as the function of bending roller force with the exit plate shape of member:
X in formulasFor the set of eight cold mill group institute organic frame bending roller forces.
By the X in objective function described in the step (f)δUse XsIt substitutes, eight rollers can determine using similar method
Production board shape cross direction profiles value β of i-th of any jth rack of tandem mills with memberji。
Step (i): judging whether to meet optimizing condition, according to each rack bending roller force, the bending roller force optimizing step-length
And the production board shape cross direction profiles value determines each rack bending roller force optimal value of eight cold mill groups.
Parameter G=1 × 10 are compared in order20, the plate shape cross direction profiles value β that will be calculatedjiIt is updated to the objective function meter
Target function value G (X is calculated in formulaS).Compare G (XS) and G size, if G > G (XS), then enable G=G (XS), determine jth machine
Frame bending roller force optimal value S 'j=Sj.Judge SjWithSize, ifThen into
Enter the step (j)；Conversely, enabling Sj=Sj+ΔSj, then return to the step (h).
Step (j): each rack is controlled according to each rack roll shifting amount optimal value and each rack bending roller force optimal value
Mill milling production board shape.
The jth rack bending roller force optimal value S ' obtained according to the step (i)j=Sj, eight each racks of cold mill group are curved
Roller power is set as S 'j(j=1,2 ... n).
According to each rack roll shifting amount optimal value δ 'j(j=1,2 ... n) and each rack bending roller force optimal value S 'j(j
=1,2 ... n) control each machine frame rolling mill mill product plate shape.
Step (k): judge whether the deviation between current production board shape and target flatness is greater than deviation threshold.
Current production board shape and target flatness are obtained, is judged inclined between the current production board shape and the target flatness
Difference G (XΔsj) whether it is greater than deviation threshold.When fluctuation, the fluctuation of supplied materials parameter etc. that practical rolling technological parameter occur cause
When production board shape changes, production board shape and target flatness deviation G (XΔsj) larger, it is greater than deviation threshold, at this time mill product plate shape
Discontented pedal plate shape requirement, then need each rack bending roller force setting value of eight cold mill group of on-line tuning, be transferred to the step (g)；
If production board shape and target flatness deviation G (XΔsj) smaller, meet the requirement of plate shape, is then transferred to the step (j), real-time monitoring is worked as
Whether preceding production board shape meets the requirement of plate shape.
When stopping rolling, eight cold mill groups terminate to roll work.
As it can be seen that the present invention is under the premise of fully understanding the main Strip Shape Control means of mkw mill influences plate shape, it is quantitative
Analyze the influence of eight cold mill group rollers and roll shifting to plate shape, propose a kind of roller for being suitable for eight cold mill groups and
Roll shifting integrated optimization and setting method, in conjunction with eight cold mill group equipment features and process characteristic, by examining institute's organic frame synthesis
Consider, cooperate with each rack roller of setting and roll shifting amount, enables to mkw mill completed belt steel plate shape to reach best, while to band
A possibility that steel defect generates is limited to the greatest extent, is provided reliably for the roller roll shifting setting of live eight cold mill groups
Theoretical basis, promote eight cold mill groups plate form control effect can effectively be promoted.
The present invention also provides a kind of eight cold mill group plate shape roll control systems, Fig. 2 is eight roller provided by the invention
The system construction drawing of cold mill complex plate shape roll control system.Referring to fig. 2, the system comprises:
Roll shifting amount and optimizing step-length obtain module 201, for obtaining each rack roll shifting amount of eight cold mill groups and roll shifting amount
Optimizing step-length；
First production board shape cross direction profiles value determining module 202, for determining production board according to each rack roll shifting amount
Shape cross direction profiles value；
Roll shifting amount optimal value determining module 203, for according to each rack roll shifting amount, the roll shifting amount optimizing step-length and
The production board shape cross direction profiles value determines each rack roll shifting amount optimal value of eight cold mill groups；
Bending roller force and optimizing step-length obtain module 204, for obtaining each rack bending roller force of eight cold mill groups and bending roller force
Optimizing step-length；
Second production board shape cross direction profiles value determining module 205, for determining production board according to each rack bending roller force
Shape cross direction profiles value；
Bending roller force optimal value determining module 206, for according to each rack bending roller force, the bending roller force optimizing step-length and
The production board shape cross direction profiles value determines each rack bending roller force optimal value of eight cold mill groups；
Roll control module 207, for optimal according to each rack roll shifting amount optimal value and each rack bending roller force
Value controls each machine frame rolling mill mill product plate shape.
Optionally, the system also includes:
Plate shape obtains module, for obtaining current production board shape and target flatness；
Plate shape judgment module, for judging whether the deviation between the current production board shape and the target flatness is big
In deviation threshold, the first judging result is obtained；
Plate shape bias controls, if being the current production board shape and the Target Board for first judging result
Deviation between shape is greater than deviation threshold, returns to each rack bending roller force of eight cold mill groups of the acquisition and bending roller force optimizing step
Long step.
The first production board shape cross direction profiles value determining module 202 specifically includes:
Band forward pull cross direction profiles value determination unit, for according to each rack roll shifting amount and formulaDetermine i-th of jth rack with first band
Forward pull cross direction profiles value σ1ji；Wherein X1Indicate the left and right roller and roll shifting amount of jth rack；X2Indicate that the left and right of upstream stand is curved
Roller and roll shifting amount；X3Indicate rolling procedure parameter；X4Indicate supplied materials characterisitic parameter；SljIndicate that jth rack working roll is driven lateral bending
Roller power；SrjIndicate jth rack working roll fore side bending roller force；δjIndicate jth rack working roll roll shifting amount；εjIndicate jth rack
Reduction ratio；T1jIndicate jth rack forward pull setting value；T0jIndicate jth rack backward pull setting value；h01iIndicate incoming hot rolled slab
Thickness cross direction profiles；L1iIndicate the plate shape cross direction profiles of incoming hot rolled slab；
First production board shape cross direction profiles value determination unit, for according to i-th of the jth rack with first band before
Tension cross direction profiles value σ1ji, using formulaDetermine i-th of jth rack with member
Production board shape cross direction profiles value βji；Wherein υ is strip material Poisson's ratio, and E is strip material elasticity modulus.
The roll shifting amount optimal value determining module 203 specifically includes:
Target function value determination unit, for i-th of production board shape cross direction profiles value β with member according to jth rackji,
Using formula
Determine target function value G (Xδ)；Wherein n is strip Cross slat member number；αiFor flatness object curve；φjIndicate jth
Rack outlet plate shape and target flatness similitude discriminant function；ψjIndicate jth rack outlet plate shape and target flatness similitude system
Number；ψ*Penalty function value when display plate shape form is inconsistent；ξ is weighting coefficient；XδIndicate the set of institute's organic frame shifting amount；N is
Rack quantity；Indicate jth frame plate shape control coefrficient；Fj(Xδ) indicate to make jth rack outlet plate shape and target flatness difference most
Small objective function；
Target function value judging unit, for judging the target function value G (Xδ) whether be less than and compare parameter G, it obtains
Second judging result；
Compare parameter determination unit, if being the target function value G (X for second judging resultδ) be less than and compare
Parameter G enables G=G (Xδ), δ 'j=δj；
Roll shifting amount judging unit, for judging the sum of jth rack roll shifting amount and jth rack roll shifting amount optimizing step-length δj+Δδj
Whether jth rack roll shifting amount maximum value δ is greater thanjmax, obtain third judging result；
Roll shifting amount optimal value determination unit, if being δ for the third judging resultj+Δδj> δjmax(j=1,2 ...
N), determine that jth rack roll shifting amount optimal value is δ 'j(j=1,2 ... n), and it is curved to execute eight each racks of cold mill group of the acquisition
The step of roller power and bending roller force optimizing step-length；
Roll shifting amount updating unit, if being δ for the third judging resultj+ΔδjNo more than δjmax, enable δj=δj+Δδj,
Return to described the step of production board shape cross direction profiles value is determined according to each rack roll shifting amount.
Illustrate eight cold mill group plate shape control method for rolling of the invention and system below by two specific embodiments
Production board shape complex optimum effect.
Embodiment 1:
By taking certain 1,450 8 cold mill group roller of factory and roll shifting synthetic setting as an example, according to eight cold mills group shown in FIG. 1
Plate shape control method for rolling, firstly, collecting eight cold mill group device parameters and supplied materials parameter in step (a), specifically including that
The barrel length L of the working roll of 1#~5# milling trainw1=1550mm, Lw2=1550mm, Lw3=1550mm, Lw4=1550mm, Lw5=
1550mm, the barrel length L of intermediate calender rollsm1=1665mm, Lm2=1665mm, Lm3=1665mm, Lm4=1665mm, Lm5=1665mm,
The barrel length L of backing roll1=1550mm, L2=1550mm, L3=1550mm, L4=1550mm, L5=1550mm, the roller of working roll
Diameter Dw1=290mm, Dw2=280mm, Dw3=280mm, Dw4=280mm, Dw5=290mm, the roller diameter D of intermediate calender rollsm1=480, Dm2=
480、Dm3=480, Dm4=480, Dm5=480, the roller diameter D of backing rollb1=520mm, Db2=520mm, Db3=520mm, Db4=
520mm、Db5=520mm, the distance of top working roll fore side bending roller force to rolling centerline Top working roll is driven lateral bending
Distance of the roller power to rolling centerline
Distance of the bottom working roll fore side bending roller force to rolling centerline Distance of the bottom working roll transmission side bending roller force to rolling centerline Back lining bearing of supporting roll center is away from lbF=
150mm, back lining bearing of supporting roll width Bz=100mm, back lining bearing number 10 on a certain backing roll, left side backing roll and in
Between the axial connecting line of roller and the angle of vertical direction Strip material
Thickness H=3mm, width B=1250mm, elastic modulus E=200GPa, Poisson's ratio υ=0.269, resistance of deformation k=1050MPa.
Later in step (b), cold mill complex Technological Parameters of Rolling Process, 1#~5# rack mill speed v are collectedj1=
253m/min、vj2=390m/min, vj3=541m/min, vj4=629m/min, vj5=692m/min, 1#~5# rack band
Reduction ratio ζj1=0.25, ζj2=0.255, ζj3=0.246, ζj4=0.219, ζj5=0.049, the first rack forward pull T0=
90KN, 1#~5# rack backward pull Tj1=80KN, Tj2=67KN, Tj3=51KN, Tj4=34KN, Tj5=6KN sets rack work
Make roller fore side bending roller force SrjWith transmission side bending roller force SljFor ground state:
Target flatness curvilinear system numerical value is then given in step (c) determines target flatness curve: b0=3, b2=9.7, b4
=2.
Each rack roll shifting amount initial value δ of eight cold mill groups is then given in step (d)1=65mm, δ2=55mm, δ3
=40mm, δ4=50mm, δ5=70mm, optimizing step delta δj=1mm and each rack roll shifting amount maximum value δjmax=100mm.
Then according to step (e), production board shape cross direction profiles value is calculated according to each rack roll shifting amount
Then compare parameter G=1 × 10 according to step (f) order20, the plate shape cross direction profiles value β that will be calculatedjiIt substitutes into
To objective function
Calculating target function value G (Xδ).In formula, XδIndicate the set of 5 rack shifting amounts；φjIndicate jth rack outlet
Plate shape and target flatness similitude discriminant function, φj>=0 display plate shape form is similar (be all side wave or be all middle wave), φj
0 display plate shape form of < it is dissimilar (such as one be Bian Lang, one be middle wave)；ψjIndicate jth rack outlet plate shape and target
Plate shape likeness coefficient；ψ*Penalty function value when display plate shape form is inconsistent, takes 7 here；Indicate jth rack Strip Shape Control
Coefficient takes five Stands Cold Tandem Mill groups here
Compare G (Xδ) and G size, if G > G (Xδ), then enable G=G (Xδ), δ 'j=δj, judge δjWith δjmaxSize,
If δj+Δδj> δjmax(j=1,2,3,4,5), then program enters (g), conversely, enabling δj=δj+Δδj, then program enters step
(e)。
(g) δ ' is set as to each rack roll shifting amount of eight cold mill groupsj(j=1,2,3,4,5) gives eight cold mill groups
Each rack bending roller force initial value is And step delta Sj=1KN.
(h) production board shape cross direction profiles value β is calculated according to the newly given each rack bending roller force of eight cold mill groupsji。
(i) it enables and compares parameter G=1 × 1020, the plate shape cross direction profiles value β that will be calculatedjiIt is updated to objective function meter
Target function value G (X is calculated in formulaS), compare G (XS) and G size, if G > G (XS), then enable G=G (XS), S 'j=Sj, sentence
Disconnected SjWithSize, ifThen program enters (j), conversely, enabling Sj=Sj+ΔSj, then
Program enters step (h).
(j) S ' is set as to each rack bending roller force of eight cold mill groupsj(j=1,2 ... n).
(k) under the fluctuation of the practical rolling technological parameter of the unit, the fluctuation of supplied materials parameter, production board shape changes and target
Plate shape deviation G (XΔsj) less, meet the requirement of plate shape, be then transferred to step (j), when stopping rolling, terminates rolling, it is cold to obtain eight rollers
Correlation data is as shown in table 1 before and after milling train group roller and roll shifting setting value complex optimum:
Comparison before and after the corresponding eight cold mills group roller of 1 embodiment of table 1 and roll shifting setting value complex optimum
Roller unit of force is KN in table 1, and roll shifting amount unit is mm.Fig. 3 is the corresponding work roll bending of the embodiment of the present invention 1
With roll shifting complex optimum front and rear panel shape contrast curve chart.Using eight cold mill groups after optimization it can be seen from table 1 and Fig. 3
Roller and roll shifting setting value, enable each rack make optimizing and revising for different amplitudes, the plate shape after optimization relatively optimize before have compared with
Big to improve, maximum template value is reduced to the 4I after optimization by 10I, and the distribution of plate shape is more uniform, improves eight roller tandem mills
Outlet strip shape quality, be conducive to eight cold mill group belt steel products quality improve, promoted scene economic benefit.
Embodiment 2:
By taking certain 1,250 8 cold mill group roller of factory and roll shifting synthetic setting as an example, according to method shown in FIG. 1, firstly,
In step (a), eight cold mill group device parameters and supplied materials parameter are collected, specifically includes that the working roll of 1#~5# milling train
Barrel length Lw1=1350mm, Lw2=1350mm, Lw3=1350mm, Lw4=1350mm, Lw5=1350mm, the body of roll of intermediate calender rolls
Length Lm1=1400mm, Lm2=1400mm, Lm3=1400mm, Lm4=1400mm, Lm5=1400mm, the barrel length of backing roll
L1=1350mm, L2=1350mm, L3=1350mm, L4=1350mm, L5=1350mm, the roller diameter D of working rollw1=260mm,
Dw2=260mm, Dw3=260mm, Dw4=260mm, Dw5=260mm, the roller diameter D of intermediate calender rollsm1=430, Dm2=430, Dm3=
430、Dm4=430, Dm5=430, the roller diameter D of backing rollb1=490mm, Db2=490mm, Db3=490mm, Db4=490mm, Db5
=490mm, the distance of top working roll fore side bending roller force to rolling centerlineTop working roll transmission side
Distance of the bending roller force to rolling centerline Distance of the bottom working roll fore side bending roller force to rolling centerlineBottom working roll transmission side
Distance of the bending roller force to rolling centerline Back lining bearing of supporting roll center is away from lbF=80mm, back lining bearing of supporting roll width Bz=90mm, a certain bearing
Back lining bearing number 8 on roller, the angle of the axial connecting line and vertical direction of left side backing roll and intermediate calender rollsStrip material thickness H=4mm, width B=950mm, bullet
Property modulus E=210GPa, Poisson's ratio υ=0.235, resistance of deformation k=875MPa；
Later in step (b), cold mill complex Technological Parameters of Rolling Process, 1#~5# rack mill speed v are collectedj1=
220m/min、vj2=336m/min, vj3=495m/min, vj4=587m/min, vj5=663m/min, 1#~5# rack band
Reduction ratio ζj1=0.23, ζj2=0.24, ζj3=0.252, ζj4=0.21, ζj5=0.035, the first rack forward pull T0=87KN,
1#~5# rack backward pull Tj1=90KN, Tj2=87KN, Tj3=65KN, Tj4=40KN, Tj5=23KN sets rack working roll
Fore side bending roller force SrjWith transmission side bending roller force SljFor ground state:
Target flatness curvilinear system numerical value is then given in step (c) determines target flatness curve: b0=3.4, b2=6.2,
b4=2；
Each rack roll shifting amount initial value δ of eight cold mill groups is then given in step (d)1=30mm, δ2=25mm, δ3
=20mm, δ4=35mm, δ5=30mm, optimizing step delta δj=1mm and each rack roll shifting amount maximum value δjmax=100mm；
Then according to step (e), production board shape cross direction profiles value is calculated according to each rack roll shifting amount
Then compare parameter G=1 × 10 according to step (f) order20, the plate shape cross direction profiles value β that will be calculatedjiIt substitutes into
To objective function
In formula, XδIndicate the set of 5 rack shifting amounts；φjIndicate jth rack outlet plate shape and target flatness similitude
Discriminant function, φj>=0 display plate shape form is similar (be all side wave or be all middle wave), φj0 display plate shape form of < is dissimilar
(such as one be Bian Lang, one be middle wave)；ψjIndicate jth rack outlet plate shape and target flatness likeness coefficient；ψ*Display plate
Penalty function value when shape form is inconsistent, takes 5 here；Jth frame plate shape control coefrficient is indicated, for five Stands Cold Tandem Mills
Group takes here
Calculating target function value G (Xδ), compare G (Xδ) and G size, if G > G (Xδ), then enable G=G (Xδ), δ 'j=δj,
Judge δjWith δjmaxSize, if δj+Δδj> δjmax(j=1,2,3,4,5), then program enters (g), conversely, enabling δj=δj+Δ
δj, then program enters step (e)；
δ ' then is set as to each rack roll shifting amount of eight cold mill groups in step (g)j(j=1,2,3,4,5) gives eight
Each rack bending roller force initial value of cold mill group is And step delta Sj=1KN；
Production board shape cross direction profiles are then calculated according to the newly given each rack bending roller force of eight cold mill groups in step (h)
Value βji；
Then compare parameter G=1 × 10 in step (i) order20, the plate shape cross direction profiles value β that will be calculatedjiIt is updated to
Target function value G (X is calculated in objective function calculating formulaS), compare G (XS) and G size, if G > G (XS), then enable G=G
(XS), S 'j=Sj, judge SjWithSize, ifThen program enters (j), conversely, enabling
Sj=Sj+ΔSj, then program enters step (h)；
S ' then is set as to each rack bending roller force of eight cold mill groups in step (j)j(j=1,2 ... n)；
Then in step (k) under the fluctuation of the practical rolling technological parameter of the unit, the fluctuation of supplied materials parameter, production board shape
Change and target flatness deviation G (XΔsj) larger, plate shape requires not to be able to satisfy, and needs eight each rack of cold mill group of on-line tuning
Bending roller force setting value, program are transferred to step (g)；Giving each rack bending roller force initial value of eight cold mill groups is And step delta Sj=
1KN；Production board shape cross direction profiles value β is calculated according to the newly given each rack bending roller force of eight cold mill groups in step (h)ji；?
Parameter G=1 × 10 are compared in step (i) order20, the plate shape cross direction profiles value β that will be calculatedjiIt is updated to objective function calculating formula
Middle calculating target function value G (XS), compare G (XS) and G size, if G > G (XS), then enable G=G (XS), S 'j=Sj, judge Sj
WithSize, ifThen program enters (j), conversely, enabling Sj=Sj+ΔSj, then program
It enters step (h)；S ' then is set as to each rack bending roller force of eight cold mill groups in step (j)j(j=1,2 ... n)；
Finally under the fluctuation of the practical rolling technological parameter of step (k) the unit, the fluctuation of supplied materials parameter, production board shape changes
Change and target flatness deviation G (XΔsj) less, meeting the requirement of plate shape, then program is transferred to (j), when stopping rolling, EP (end of program).?
Correlation data is as shown in table 2 before and after to eight cold mill group rollers and roll shifting setting value complex optimum:
Comparison before and after the corresponding eight cold mills group roller of 2 embodiment of table 2 and roll shifting setting value complex optimum
Roller unit of force is KN in table 2, and roll shifting amount unit is mm.Fig. 4 is the corresponding work roll bending of the embodiment of the present invention 2
With roll shifting complex optimum front and rear panel shape contrast curve chart.As shown in table 2, in conjunction with Fig. 4 as can be seen that optimization after eight cold mill groups
Roller and each rack of roll shifting setting value make optimizing and revising for different amplitudes, and the plate shape after optimization has larger change before relatively optimizing
Kind, maximum template value is reduced to the 6I after optimization by 8I, and the distribution of plate shape is more uniform, improves the outlet of eight roller tandem mills
Strip shape quality, the quality for being conducive to eight cold mill group belt steel products improve, and promote the economic benefit at scene,.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of eight cold mill group plate shape control method for rolling, which is characterized in that the described method includes:
Obtain each rack roll shifting amount of eight cold mill groups and roll shifting amount optimizing step-length；
Production board shape cross direction profiles value is determined according to each rack roll shifting amount；
Determine that eight rollers are cold according to each rack roll shifting amount, the roll shifting amount optimizing step-length and the production board shape cross direction profiles value
Each rack roll shifting amount optimal value of milling train group；
Obtain each rack bending roller force of eight cold mill groups and bending roller force optimizing step-length；
Production board shape cross direction profiles value is determined according to each rack bending roller force；
Determine that eight rollers are cold according to each rack bending roller force, the bending roller force optimizing step-length and the production board shape cross direction profiles value
Each rack bending roller force optimal value of milling train group；
Each machine frame rolling mill mill product is controlled according to each rack roll shifting amount optimal value and each rack bending roller force optimal value
Plate shape.
2. eight cold mills group plate shape control method for rolling according to claim 1, which is characterized in that described according to
After each rack roll shifting amount optimal value and each rack bending roller force optimal value control each machine frame rolling mill mill product plate shape, also wrap
It includes:
Obtain current production board shape and target flatness；
Judge whether the deviation between the current production board shape and the target flatness is greater than deviation threshold, obtains first and sentence
Disconnected result；
If deviation of first judging result between the current production board shape and the target flatness is greater than deviation threshold
The step of value, return each rack bending roller force of eight cold mill groups of the acquisition and bending roller force optimizing step-length.
3. eight cold mills group plate shape control method for rolling according to claim 1, which is characterized in that described according to
Each rack roll shifting amount determines production board shape cross direction profiles value, specifically includes:
According to each rack roll shifting amount and formula
Determine i-th of forward pull cross direction profiles value σ with first band of jth rack1ji；Wherein X1Indicate jth rack left and right roller and
Roll shifting amount；X2Indicate the left and right roller and roll shifting amount of upstream stand；X3Indicate rolling procedure parameter；X4Indicate supplied materials characterisitic parameter；
SljIndicate jth rack working roll transmission side bending roller force；SrjIndicate jth rack working roll fore side bending roller force；δjIndicate jth rack
Working roll roll shifting amount；εjIndicate jth rack reduction ratio；T1jIndicate jth rack forward pull setting value；T0jIndicate the post-tensioning of jth rack
Power setting value；h01iIndicate the thickness cross direction profiles of incoming hot rolled slab；L1iIndicate the plate shape cross direction profiles of incoming hot rolled slab；
According to i-th of the jth rack forward pull cross direction profiles value σ with first band1ji, using formulaDetermine i-th of production board shape cross direction profiles value β with member of jth rackji；Wherein
υ is strip material Poisson's ratio, and E is strip material elasticity modulus.
4. eight cold mills group plate shape control method for rolling according to claim 3, which is characterized in that described according to
Each rack roll shifting amount, the roll shifting amount optimizing step-length and the production board shape cross direction profiles value determine eight each racks of cold mill group
Roll shifting amount optimal value, specifically includes:
According to i-th of the jth rack production board shape cross direction profiles value β with memberji, using formula
Determine target function value G (Xδ)；Wherein n is strip Cross slat member number；αiFor flatness object curve；φjIndicate jth rack
Exit plate shape and target flatness similitude discriminant function；ψjIndicate jth rack outlet plate shape and target flatness likeness coefficient；ψ*
Penalty function value when display plate shape form is inconsistent；ξ is weighting coefficient；XδIndicate the set of institute's organic frame shifting amount；N is rack
Quantity；Indicate jth frame plate shape control coefrficient；Fj(Xδ) indicate to keep jth rack outlet plate shape and target flatness difference minimum
Objective function；
Judge the target function value G (Xδ) whether be less than and compare parameter G, obtain the second judging result；
If second judging result is the target function value G (Xδ) be less than and compare parameter G, enable G=G (Xδ), δ 'j=δj；
Judge the sum of jth rack roll shifting amount and jth rack roll shifting amount optimizing step-length δj+ΔδjWhether jth rack roll shifting amount is greater than most
Big value δjmax, obtain third judging result；
If the third judging result is δj+Δδj> δjmax(j=1,2 ... n), determines that jth rack roll shifting amount optimal value is δ 'j
(the step of j=1,2 ... n), executes each rack bending roller force of eight cold mill groups of the acquisition and bending roller force optimizing step-length；
If the third judging result is δj+ΔδjNo more than δjmax, enable δj=δj+Δδj, return described according to each rack
Roll shifting amount determines the step of production board shape cross direction profiles value.
5. a kind of eight cold mill group plate shape roll control systems, which is characterized in that the system comprises:
Roll shifting amount and optimizing step-length obtain module, for obtaining each rack roll shifting amount of eight cold mill groups and roll shifting amount optimizing step
It is long；
First production board shape cross direction profiles value determining module, for determining that production board shape is laterally divided according to each rack roll shifting amount
Implantation；
Roll shifting amount optimal value determining module, for according to each rack roll shifting amount, the roll shifting amount optimizing step-length and it is described at
Product plate shape cross direction profiles value determines each rack roll shifting amount optimal value of eight cold mill groups；
Bending roller force and optimizing step-length obtain module, for obtaining each rack bending roller force of eight cold mill groups and bending roller force optimizing step
It is long；
Second production board shape cross direction profiles value determining module, for determining that production board shape is laterally divided according to each rack bending roller force
Implantation；
Bending roller force optimal value determining module, for according to each rack bending roller force, the bending roller force optimizing step-length and it is described at
Product plate shape cross direction profiles value determines each rack bending roller force optimal value of eight cold mill groups；
Roll control module, it is each for being controlled according to each rack roll shifting amount optimal value and each rack bending roller force optimal value
Machine frame rolling mill mill product plate shape.
6. eight cold mills group plate shape roll control system according to claim 5, which is characterized in that the system is also wrapped
It includes:
Plate shape obtains module, for obtaining current production board shape and target flatness；
Plate shape judgment module, for judging whether the deviation between the current production board shape and the target flatness is greater than partially
Poor threshold value obtains the first judging result；
Plate shape bias controls, if for first judging result be the current production board shape and the target flatness it
Between deviation be greater than deviation threshold, return to each rack bending roller force of eight cold mill groups and the bending roller force optimizing step-length of obtaining
Step.
7. eight cold mills group plate shape roll control system according to claim 5, which is characterized in that first finished product
Plate shape cross direction profiles value determining module specifically includes:
Band forward pull cross direction profiles value determination unit, for according to each rack roll shifting amount and formulaDetermine i-th of jth rack with first band
Forward pull cross direction profiles value σ1ji；Wherein X1Indicate the left and right roller and roll shifting amount of jth rack；X2Indicate that the left and right of upstream stand is curved
Roller and roll shifting amount；X3Indicate rolling procedure parameter；X4Indicate supplied materials characterisitic parameter；SljIndicate that jth rack working roll is driven lateral bending
Roller power；SrjIndicate jth rack working roll fore side bending roller force；δjIndicate jth rack working roll roll shifting amount；εjIndicate jth rack
Reduction ratio；T1jIndicate jth rack forward pull setting value；T0jIndicate jth rack backward pull setting value；h01iIndicate incoming hot rolled slab
Thickness cross direction profiles；L1iIndicate the plate shape cross direction profiles of incoming hot rolled slab；
First production board shape cross direction profiles value determination unit, for i-th of forward pull with first band according to the jth rack
Cross direction profiles value σ1ji, using formulaDetermine i-th of finished product with member of jth rack
Plate shape cross direction profiles value βji；Wherein υ is strip material Poisson's ratio, and E is strip material elasticity modulus.
8. eight cold mills group plate shape roll control system according to claim 7, which is characterized in that the roll shifting amount is most
Figure of merit determining module specifically includes:
Target function value determination unit, for i-th of production board shape cross direction profiles value β with member according to jth rackji, use
Formula
Determine target function value G (Xδ)；Wherein n is strip Cross slat member number；αiFor flatness object curve；φjIndicate jth rack
Exit plate shape and target flatness similitude discriminant function；ψjIndicate jth rack outlet plate shape and target flatness likeness coefficient；ψ*
Penalty function value when display plate shape form is inconsistent；ξ is weighting coefficient；XδIndicate the set of institute's organic frame shifting amount；N is rack
Quantity；Indicate jth frame plate shape control coefrficient；Fj(Xδ) indicate to keep jth rack outlet plate shape and target flatness difference minimum
Objective function；
Target function value judging unit, for judging the target function value G (Xδ) whether be less than and compare parameter G, it obtains second and sentences
Disconnected result；
Compare parameter determination unit, if being the target function value G (X for second judging resultδ) be less than and compare parameter G,
Enable G=G (Xδ), δ 'j=δj；
Roll shifting amount judging unit, for judging the sum of jth rack roll shifting amount and jth rack roll shifting amount optimizing step-length δj+ΔδjWhether
Greater than jth rack roll shifting amount maximum value δjmax, obtain third judging result；
Roll shifting amount optimal value determination unit, if being δ for the third judging resultj+Δδj> δjmax(j=1,2 ... n), really
Determining jth rack roll shifting amount optimal value is δ 'j(j=1,2 ... n), execute each rack bending roller force of eight cold mill groups of the acquisition and
The step of bending roller force optimizing step-length；
Roll shifting amount updating unit, if being δ for the third judging resultj+ΔδjNo more than δjmax, enable δj=δj+Δδj, return
Described the step of production board shape cross direction profiles value is determined according to each rack roll shifting amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119039.XA CN109290377B (en) | 2018-09-25 | 2018-09-25 | Eight cold mill group plate shape control method for rolling of one kind and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119039.XA CN109290377B (en) | 2018-09-25 | 2018-09-25 | Eight cold mill group plate shape control method for rolling of one kind and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109290377A CN109290377A (en) | 2019-02-01 |
| CN109290377B true CN109290377B (en) | 2019-08-02 |
Family
ID=65164400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811119039.XA Active CN109290377B (en) | 2018-09-25 | 2018-09-25 | Eight cold mill group plate shape control method for rolling of one kind and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109290377B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112588839B (en) * | 2020-11-26 | 2021-11-23 | 燕山大学 | Method and system for compensating bending roller by taking shape control as target |
| CN112872047B (en) * | 2020-12-16 | 2022-06-28 | 苏州博恩普特测控科技有限公司 | Shape control method of cold rolling mill |
| CN113369314A (en) * | 2021-08-04 | 2021-09-10 | 宝钢湛江钢铁有限公司 | Fine optimization control technology for plate shape of five-frame six-roller cold continuous rolling unit |
| CN114309084B (en) * | 2021-12-15 | 2023-05-12 | 鞍钢股份有限公司 | Roll bending compensation method of cold continuous rolling unit based on section shape of incoming material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581536A (en) * | 1969-04-17 | 1971-06-01 | Gen Electric | Apparatus for sensing the unstressed shape of a thin strip subjected to high tensile stress |
| JPS579504A (en) * | 1980-06-23 | 1982-01-19 | Nisshin Steel Co Ltd | Manufacture of hot rolled steel strip with excellent descalability |
| CN1609736A (en) * | 2003-10-22 | 2005-04-27 | 株式会社日立制作所 | Controlling device, system utilizing the same controller and controlling method |
| CN101301659A (en) * | 2008-03-15 | 2008-11-12 | 燕山大学 | On-line method for setting mechanism model-based plate parameter of double UCM temper milling machine group |
| CN101513647A (en) * | 2008-02-22 | 2009-08-26 | 宝山钢铁股份有限公司 | Method for leveling strip produced by secondary cold rolling unit |
| CN101618402A (en) * | 2008-06-30 | 2010-01-06 | 宝山钢铁股份有限公司 | Method for controlling planeness of cold-rolling strip steel |
| CN103376085A (en) * | 2013-07-05 | 2013-10-30 | 燕山大学 | Intelligent and comprehensive evaluation method for cold-rolled strip steel plate shapes |
-
2018
- 2018-09-25 CN CN201811119039.XA patent/CN109290377B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581536A (en) * | 1969-04-17 | 1971-06-01 | Gen Electric | Apparatus for sensing the unstressed shape of a thin strip subjected to high tensile stress |
| JPS579504A (en) * | 1980-06-23 | 1982-01-19 | Nisshin Steel Co Ltd | Manufacture of hot rolled steel strip with excellent descalability |
| CN1609736A (en) * | 2003-10-22 | 2005-04-27 | 株式会社日立制作所 | Controlling device, system utilizing the same controller and controlling method |
| CN101513647A (en) * | 2008-02-22 | 2009-08-26 | 宝山钢铁股份有限公司 | Method for leveling strip produced by secondary cold rolling unit |
| CN101301659A (en) * | 2008-03-15 | 2008-11-12 | 燕山大学 | On-line method for setting mechanism model-based plate parameter of double UCM temper milling machine group |
| CN101618402A (en) * | 2008-06-30 | 2010-01-06 | 宝山钢铁股份有限公司 | Method for controlling planeness of cold-rolling strip steel |
| CN103376085A (en) * | 2013-07-05 | 2013-10-30 | 燕山大学 | Intelligent and comprehensive evaluation method for cold-rolled strip steel plate shapes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109290377A (en) | 2019-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109290377B (en) | Eight cold mill group plate shape control method for rolling of one kind and system | |
| CN104511482B (en) | A kind of hot-strip convex degree control method | |
| CN1980752B (en) | Method and device for measuring and adjusting the evenness and/or tension of a special steel strip or special steel film in a multi-roll stand, particularly in a 20-roll sendzimir rolling machine | |
| CN100406146C (en) | Optimized presetting method for steel strip-flattening technological parameter | |
| CN101301659B (en) | On-line method for setting mechanism model-based plate parameter of double UCM temper milling machine group | |
| CN103978043B (en) | Method applicable to rolling force and tension force coordinated control of dual-rack four-roller leveling unit | |
| CN101602067A (en) | Five frame UCM tandem mills plate shapes and the online integrated control method of strip crown | |
| CN101934290B (en) | Load allocation adjusting method for stainless steel tandem cold rolling mill | |
| CN101513647B (en) | Method for leveling strip produced by secondary cold rolling unit | |
| CN108405625B (en) | Downstream roll changing method for realizing online roll changing of ESP finishing mill group | |
| CN101739514B (en) | Method for comprehensively optimizing rolling technological parameter of dual UCM type secondary cold mill train | |
| CN102029294A (en) | Control method of lateral thick difference of cold-rolling strip steels | |
| CN102601125B (en) | Steel rail cross section specification full-length fluctuation control method | |
| CN106269903B (en) | A kind of continuous hot-rolling mill roller optimal setting method | |
| CN103962392B (en) | A kind of continuous hot-rolling mill mm finishing mill unit Dynamic load control method | |
| CN104942019A (en) | Automatic control method for width of steel strips during cold rolling | |
| CN103962391A (en) | Rolling load optimization method for hot continuous finishing mill group | |
| CN111229829B (en) | Full-multiple-length bar processing equipment and process | |
| CN101097439A (en) | Stretch reducing mill wall thickness feed forward combination feedback control method | |
| CN106607460B (en) | Sendzimir 20 high mill Edge shape control method | |
| CN111842506B (en) | Roll shifting control method for five-frame six-roll cold continuous rolling unit | |
| CN113333477A (en) | Method for controlling roll gap during online roll changing and dynamic regulation changing of ESP finishing mill group | |
| CN109877167B (en) | Tension influence coefficient analysis method for improving rolling stability of degree of freedom | |
| CN107214199B (en) | A kind of prediction of plate shape method being suitable for eight cold mill groups | |
| CN102581028B (en) | Hardness compensation method for controlling band steel hot-rolling molding process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191101 Address after: 063600 south of Lexin Road, leting Town, leting County, Tangshan City, Hebei Province (original Sanhe economic community) Patentee after: Tangshan grano Metal Technology Co., Ltd Address before: 066000 No. 438, Hebei Avenue, Qinhuangdao, Hebei Patentee before: Yanshan University |
|
| TR01 | Transfer of patent right |