CN108144971A - It is suitable for roll profile optimization method of the six roller tandem mills with the prevention of quick-fried roller for target - Google Patents
It is suitable for roll profile optimization method of the six roller tandem mills with the prevention of quick-fried roller for target Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B33/00—Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls for handling cobbles; Overload safety devices
- B21B33/02—Preventing fracture of rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B21B37/48—Tension control; Compression control
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Abstract
The present invention relates to a kind of roll profile optimization methods for being suitable for six roller tandem mills with the prevention of quick-fried roller for target, and this method mainly includes the following steps that, specific as follows：(a) capital equipment and technological parameter of unit are collected；(b) the specification feature and technological parameter of strip are collected；(c) working roll, intermediate calender rolls bending roller force and intermediate calender rolls shifting amount setup parameter initial value are given；(d) initial curve parameter and object function initial value are given；(e) the corresponding plate shape value of ideal format product and roll gap pressure cross direction profiles value is obtained；(f) judge inequality；(g) calculating target function G (X)；(h), judge whether Powell conditions are true, if not, step (e) is transferred to, until Powell conditions are set up, terminates to calculate, obtains optimum roll camber parameter of curve；(i), intermediate calender rolls and backing roll roller curve optimal setting are provided.
Description
Technical field
The present invention relates to a kind of optimization methods, and in particular to one kind is suitable for six roller tandem mills and is prevented with quick-fried roller as mesh
Target roll profile optimization method, belongs to cold rolling technology field.
Background technology
Cold roll is one of important part in cold-rolling equipment, and cold roll quality directly affects cold rolling development.Because of this person
Always wish that roll quality is flawless, but for various reasons, roll there is also various forms of damages, and wherein roll surface is shelled
It is principal mode that cold roll is scrapped to fall with quick-fried roller, someone's statistics, due to peel off and quick-fried roller caused by scrap that account for cold roll total
More than 70% consumption, so the research and control to roll surface spalling and quick-fried roller are particularly important.It can according to field experience
To know, in cold-rolled process, the cross direction profiles value of roll gap pressure plays important influence to the peeling of roll, quick-fried roller.Especially
, then it is to occur peeling off the root with quick-fried roller when the effect of larger peak force occurs for a long time in roller surface.Influence roll gap pressure peak
The factor of value power mainly has two classes：(1) the whole size of roll gap pressure；(2) uniformity coefficient of roll gap pressure cross direction profiles.Its
In, the entirety of roll gap pressure depends mainly on the size of the size of draught pressure；The uniformity coefficient of roll gap pressure cross direction profiles then with
The factors such as roll profile parameter are related.Six-high cluster mill contact pressure between rolls will directly be led along the uneven distribution in barrel length direction
Cause the elastic bending deflection of working roll, intermediate calender rolls and backing roll, the elastic flattening deformation and roll wear situation between roller are along roller
The uneven distribution in body length direction so as to cause the uneven distribution of milling train loading roll gap shape, influences stocking shape and ruler
Very little accuracy.On the other hand, roll gap pressure, which crosses conference, leads to the peeling of roll, quick-fried roller, causes serious economic loss.With
Past, people are mainly by using the roll with convexity or sloping shoulders roll, to change contact condition between roller, to improve the change of roll
Shape mainly includes high order curve or sine and cosine curve, not using hyperbolic tangent function；And what is mainly solved is color
Phenomena such as " the gnawing shoulder " and " losing flesh " of poor, compound shape wave, pressing problem and roll, substantially not to spalling of rolls, quick-fried roller phenomenon
Prevention；Furthermore mainly the roll shape of planisher, Hot Rolling Mill either 4-roller cold rolling mill is optimized or only to six rollers
In a pair of rolls optimize, but it is few to six roller tandem mills working rolls, intermediate calender rolls and backing roll roll shape carry out it is comprehensive
Close the research of optimization.Therefore, the quick-fried roller of six roller cold continuous rollings of further investigation and the contact pressure between rolls regularity of distribution are very necessary.
Invention content
The present invention is exactly for the technical problems in the prior art, to provide one kind and be related to one kind and be suitable for the cold company of six rollers
Milling train group prevents the roll profile optimization method for target with quick-fried roller, and the present invention was rolled for five racks, six roller tandem mills
Due to the uneven aggravation of roll gap pressure cross direction profiles in journey, there is spike distribution, roller consumption is caused to increase even in band table
There is the problems such as quick-fried roller of backing roll, intermediate calender rolls are with bearing roller surface " peeling " in face, and the equipment and technology with reference to tandem mills is special
Point fully takes into account influence of the roll profile to roll gap pressure cross direction profiles value, is tracked using field test, theoretical research and reality
The method that the experiment of inspecting rolling machine is combined establishes a set of optimum roll shape designing technique for being suitable for six roller tandem mills, to machine
Group roll shape optimizes, and roll force distribution is reduced not to the greatest extent simultaneously in the case where not influencing strip shape quality
Uniformity coefficient cuts down the peak value of roll force distribution, reduces roller consumption and the incidence of the quick-fried roller of backing roll, and apply it to cold company
The production practices of milling train achieve good using effect, and larger economic benefit is created for unit.
To achieve these goals, technical scheme is as follows, and one kind is suitable for six roller tandem mills with quick-fried roller
Prevent the roll profile optimization method for target, which is characterized in that it mainly includes the following steps that, it is specific as follows：
(a) capital equipment and technological parameter of unit are collected；
(b) the specification feature and technological parameter of strip are collected；
(c) working roll, intermediate calender rolls bending roller force and intermediate calender rolls shifting amount setup parameter initial value are given；
(d) initial curve parameter and object function initial value are given；
(e) the corresponding plate shape value of ideal format product and roll gap pressure cross direction profiles value is obtained
(f) judge inequalityWhether set up simultaneouslyIf inequality is set up, step (g) is transferred to, if
Inequality is invalid, adjusts roller curve parameter, is transferred to step (e)；
(g) calculating target function G (X)；
(h), judge whether Powell conditions are true, if not, step (e) is transferred to, until Powell conditions are set up, knot
Beam calculates, and obtains optimum roll camber parameter of curve；
(i), intermediate calender rolls and backing roll roller curve optimal setting are provided, above-mentioned roller curve parameter is substituted into intermediate calender rolls
Roller curve equation and backing roll roller curve equation optimized after intermediate calender rolls roller curve equation and backing roll
Roller curve equation.
As a modification of the present invention, the step (a) collects the capital equipment and technological parameter of unit, specifically such as
Under：
A1 the main equipment parameters of tandem mills) are collected, are mainly included：Working roll barrel length Lw, work roll diameter
Dw, intermediate calender rolls barrel length Lm, intermediate roller diameter Dm, backing roll barrel length Lb, bearing roller diameter Db, backing roll transmission side and work
Make side housing screw centre-to-centre spacing lb, intermediate roller driven side and active side bowed roller hydraulic cylinder centre-to-centre spacing lm, working roll transmission side is with working
Side bowed roller hydraulic cylinder centre-to-centre spacing lw；
A2 the technology characteristics parameter of tandem mills) is collected, is mainly included：The maximum positive bending roller force of working rollIt is maximum
Negative bending roller forceThe maximum positive bending roller force of intermediate calender rollsThe negative bending roller force of maximumIntermediate calender rolls and backing roll license are maximum
Unevenness coefficient kmb, intermediate calender rolls and working roll permit maximum unevenness coefficient kmw, the maximum unevenness of draught pressure license
Coefficient kq, intermediate calender rolls maximum roll shifting amount ξ allowablemax。
As a modification of the present invention, the specification feature and technological parameter of step (b) the collection strip are specific as follows：
The main initial strength σ for including bands0j, strain hardening coefficient ksj, band width Bj, supplied materials thickness h0j, exit thickness
h1j, muzzle velocity vj, band outlet tension T1j, entrance tension T0j, incoming profile distribution Lij。
As a modification of the present invention, the step (c) gives working roll, intermediate calender rolls bending roller force and intermediate calender rolls play
Measure setup parameter initial value；In order to improve regulating power of the unit to exit plate shape to greatest extent, work roll bending power is enabledIntermediate calender rolls bending roller forceIntermediate calender rolls shifting amount is set as ground state ξ=0.
As a modification of the present invention, the step (d) gives initial curve parameter and object function initial value is,
Given initial curve parameterObject function initial value G0=1000000.
As a modification of the present invention, the step (e) calculates ideal format product j in ground state bending roller force S0Under
Plate shape value and roll gap pressure, draught pressure cross direction profiles value；
E1 corresponding plate shape value) is calculated
(wherein, σmaxFor lateral unit tension maximum value；σminFor lateral unit tension minimum value；For mean unit
Power.)
E2) according to flow of metal model, roll elastic deformation model and the Coordinate deformation equation of intermediate calender rolls and backing roll,
The Coordinate deformation equation of working roll and intermediate calender rolls calculates roll gap pressure cross direction profiles value qmwij,qmbijAnd draught pressure laterally divides
Implantation qij。
As a modification of the present invention, the step (f) judges inequalityWhether set up simultaneously
If inequality is set up, step (g) is transferred to, if inequality is invalid, roller curve parameter is adjusted, is transferred to step (e)；(wherein,
g'mw(X) it is working roll and intermediate calender rolls maximum unevenness coefficient, g'mb
(X) it is backing roll and intermediate calender rolls maximum unevenness coefficient,g'q(X) to roll
Pressing pressure maximum unevenness coefficient,)
As a modification of the present invention, the step (g) calculates the object function F of j-th of productj(X)=α1Fsj(X)
+α2gmwj(X)+α3gmbj(X)+α4gqj(X), (in actual production, frequent life is typically chosen for the belt steel product of all specifications
The product of m specification of production optimizes, and should be weighted according to the ratio in each comfortable total output, often
The product of production, weighting coefficient obtain bigger) calculating target function isValue；
(wherein, α1+α2+α3+α4=1.0 be weighting coefficient；Fs(X) it is band steel shape control target function；σ1iFor forward pull cross direction profiles value；T1For average forward pull；gmw(X) for working roll with
Intermediate calender rolls are averaged unevenness coefficient,gmb(X) it is backing roll and centre
Equal unevenness coefficient is rolled out,gq(X) it is average uneven for draught pressure
Spend coefficient,qmwiFor working roll and intermediate calender rolls roll force distribution value；qmbiFor bearing
Roller and intermediate calender rolls roll force distribution value；qiFor draught pressure Distribution Value；nmwThe item member number between working roll and intermediate calender rolls roller；nmbFor
Item member number between backing roll and intermediate calender rolls roller；nqFor draught pressure item member number；βjFor yield weighting coefficient, by the life of each specification product
Ratio of the yield in total output is produced to determine.)
Relative to the prior art, advantages of the present invention is as follows, and the present invention combines the equipment and technology feature of tandem mills,
Influence of the roll profile to roll gap pressure cross direction profiles value is fully taken into account, is tracked using field test, theoretical research and experiment
The method that the experiment of milling train is combined establishes a set of roll shape roller design optimizing for being suitable for six roller tandem mills, to machine
Group roll shape optimizes, and roll force distribution is reduced not to the greatest extent simultaneously in the case where not influencing strip shape quality
Uniformity coefficient cuts down the peak value of roll force distribution, reduces roller consumption and the incidence of the quick-fried roller of backing roll, ensures the surface matter of strip
Amount and plate shape precision, improve brand competitiveness, benefit are brought to enterprise.
Description of the drawings
Fig. 1 intermediate calender rolls roller curve schematic diagrames；
Fig. 2 is support roller roller curve schematic diagram；
Fig. 3 whole flow process figures of the present invention；
Fig. 4 is intermediate calender rolls roller curve figure after optimization；
Fig. 5 rubs for intermediate calender rolls and cuts data and curves schematic diagram；
Fig. 6 is optimization rear support roller roller curve schematic diagram；
Fig. 7 rubs for support roller and cuts data and curves schematic diagram；
Fig. 8 is pressure-plotting between intermediate calender rolls and top working roll upper before and after optimization；
Fig. 9 is pressure-plotting between intermediate calender rolls and bottom working roll lower before and after optimization；
Figure 10 is pressure-plotting between intermediate calender rolls and top backing up roll upper before and after optimization；
Figure 11 is pressure-plotting between intermediate calender rolls and lower support roll lower before and after optimization.
Specific embodiment
In order to deepen the understanding of the present invention and recognize, the present invention is made with reference to the accompanying drawings and detailed description into one
Step description and introduction.
Embodiment 1：In order to illustrate the application process of the relevant technologies of the present invention, now with certain 1,420 5 Stands Cold Tandem Mill
For group, the calculating process of certain 1,420 5 Stands Cold Tandem Mill group roll profile optimization is introduced in detail：
By largely scene tracking and theory analysis, dropped to the greatest extent simultaneously in the case where not influencing strip shape quality
The degree of irregularity of low roll force distribution cuts down the peak value of roll force distribution, and working roll still keeps former roll shape (plain-barreled roll),
And in view of actual processing ability and the Strip Shape Control efficiency of grinding machine, it in actual production, can will be in intermediate calender rolls and backing roll
Portion uses plain-barreled roll, and edge carries certain roll shape, and roller curve is hyperbolic tangent function, i.e.,As shown in Figure 1, it can be represented with equation (1)：
In formula：Dm- intermediate calender rolls green diameter；
Lm- intermediate calender rolls the body of roll is long；
δm、km- intermediate calender rolls characteristic parameter.
Likewise, according to field test and theoretical research, in order to administer the uneven of roll force distribution, control panel shape and
Prevent quick-fried roller, backing roll roller curve as shown in Fig. 2,
In formula：Db- backing roll green diameter；
Lb- backing roll the body of roll is long；
δb、kb- backing roll characteristic parameter.
In this way, it need to only determine δm、kmAnd δb、kbThis six parameters are that can determine the roll shape of intermediate calender rolls and backing roll
Curve.
In the present embodiment, it mainly includes the following steps that：
(a), the equipment and technological parameter of cold continuous rolling are collected, is mainly included the following steps that：
A1 the main equipment parameters of tandem mills) are collected, are mainly included：Working roll barrel length Lw=1420mm, work
Make roller diameter Dw=398.51mm, intermediate calender rolls barrel length Lm=1490mm, intermediate roller diameter Dm=448.91mm, backing roll roller
Body length Lb=1420mm, bearing roller diameter Db=1228.35mm, backing roll transmission side and active side housing screw centre-to-centre spacing lb
=2.55m, intermediate roller driven side and active side bowed roller hydraulic cylinder centre-to-centre spacing lm=2.65m, working roll transmission side and work lateral bending
Roller hydraulic cylinder centre-to-centre spacing lw=2.56m；
A2 the technology characteristics parameter of tandem mills) is collected, is mainly included：The maximum positive bending roller force of working roll The negative bending roller force of maximumThe maximum positive bending roller force of intermediate calender rollsThe negative bending roller force of maximumIntermediate calender rolls and the maximum unevenness coefficient k of backing roll licensemb=0.5, intermediate calender rolls and working roll license are maximum
Unevenness coefficient kmw=0.9, the maximum unevenness coefficient k of draught pressure licenseq=1.1, intermediate calender rolls maximum roll shifting amount allowable
ξmax=380mm；
(b), the specification feature and technological parameter of strip often produced is collected；
(c), in order to improve regulating power of the unit to exit plate shape to greatest extent, work roll bending power is enabledIntermediate calender rolls bending roller forceIntermediate calender rolls shifting amount is set as base
State ξ=0；
(d), initial curve parameter is givenMesh
Scalar functions initial value G0=1000000；
(e), ideal format product is calculated in ground state work roll bending power Sw=270kN, intermediate calender rolls bending roller force Sm=
In the case of 450kN, intermediate calender rolls shifting amount ξ=0, plate shape value σ1i=7.31,5.02,3.43,1.89, -0.12, -1.53, -
2.27-3.19,-3.89,-4.02,-4.11,-4.01,-3.84,-3.68,-2.47,-1.75,0.28,1.84,3.79,
5.87 }, top working roll intermediate calender rolls roll gap pressure cross direction profiles value qOn mwi=-1939.84,5240.02,5526.794,
5791.643,6052.654,6309.591,6555.547,6784.453,6991.477,7172.834,7325.584,
7447.456,7536.688,7591.898,7611.982,7596.069,7561.288,7498.761,7407.331,
7286.161,7134.844,6953.551,6743.205,6505.676,6243.993,5962.564,5667.381,
5365.61,5058.102,4727.954,0 }, upper intermediate calender rolls support roller roll gap pressure cross direction profiles value qOn mbi=0,0,
8064.966,9592.817,9344.29,9104.989,8879.056,8669.812,8479.881,8311.311,
8165.675,8044.177,7947.729,7877.022,7832.578,7814.787,7830.28,7871.894,
7939.653,8033.431,8152.909,8297.514,8466.343,8658.07,8870.84,9102.151,
9348.726,9606.371,8088.501,0,0 }, bottom working roll intermediate calender rolls roll gap pressure cross direction profiles value qUnder mwi=0,
4739.718,5075.81,5389.319,5697.21,5998.591,6286.208,6553.833,6796.662,
7011.108,7194.593,7345.341,7462.2,7544.482,7591.839,7604.187,7595.574,
7553.653,7478.076,7368.79,7226.131,7050.967,6844.852,6610.223,6350.602,
6070.818,5777.213,5477.222,5171.869,4844.176,0 }, lower intermediate calender rolls support roller roll gap pressure laterally divides
Implantation qUnder mbi=0,0,8114.769,9629.606,9367.632,9116.748,8881.159,8664.16 2,
8468.281,8295.403,8146.896,8023.723,7926.526,7855.709,7811.495,7793.972,
7810.25,7853.976,7924.887,8022.589,8146.511,8295.848,8469.486,8665.908,
8883.088,9118.375,9368.362,9628.748,8111.665,0,0 }, draught pressure cross direction profiles value qi=
{8521.213,8331.669,8155.882,7999.262,7865.606,7757.494,7676.625,7624.106,
7600.677,7606.869,7643.104,7668.547,7711.693,7774.896,7860.249,7969.421,
8103.453,8262.483,8445.43,8649.609,8870.304}；
(f), judge inequalityWhether set up simultaneouslyIf inequality is set up, step (g) is transferred to, if
Inequality is invalid, adjusts roller curve parameter, is transferred to step (e)；
(g), calculating target functionValue；
(h), judge whether Powell conditions are true, if not, step (e) is transferred to, until Powell conditions are set up, knot
Beam calculates, and obtains optimum roll camber parameter of curve
(i), above-mentioned roller curve parameter is substituted into the roller curve equation of intermediate calender rolls and the roller curve equation of backing roll
The roller curve equation of intermediate calender rolls after being optimized and the roller curve equation of backing roll.
According to above-mentioned theory achievement in research, with reference to the production technology characteristic of 1420 tandem mills strips, 1420 are designed
Tandem mills intermediate calender rolls and backing roll Optimal Curve are as follows：
(1) roller curve of intermediate calender rolls
Intermediate calender rolls curvilinear equation can be written as：Such as Fig. 4
It is shown：
According to the parameter needs of grinding machine, spy provides the grinding data of intermediate calender rolls as shown in table 1 and Fig. 5：
1 intermediate calender rolls of table are ground data
(2) roller curve of backing roll
Backing roll curvilinear equation can be written as：Such as Fig. 6
It is shown：
According to the parameter needs of grinding machine, spy provides the grinding data of backing roll as shown in table 2 and Fig. 7：
2 backing roll of table is ground data
For the effect illustrated after optimum roll shape being more clear, now advised with the typical case of 1420 tandem mills produced on-sites
For lattice cold-strip steel, the pressure distribution situation between the roller of typical regulation product before and after optimum roll shape is calculated respectively.Typical case's rule
The relevant parameter of journey strip is as shown in table 3.
3 ideal format strip relevant parameter of table
Ideal format strip is calculated using optimization front and rear roller curve separately below, before then list is to optimization
Related objective parameter is compared afterwards, and as shown in table 4, and before and after providing optimization, pressure distribution curve such as Fig. 8 between each roller is to scheming
Shown in 11.
Relevant parameter compares before and after the typical rule parameter optimization of table 4
By table 4, Fig. 8 to Figure 11 can be seen that using optimization roller curve after, band steel shape control target function by
0.744 drops to 0.534, has dropped 28.2% and ensure that strip shape quality, object function drops to 0.940 by original 1.208, declines
Average, maximum unevenness coefficient between 22.2% and roller all decreased significantly, and successfully reduce roll force distribution
Degree of irregularity, while roll gap pressure peak value has decline by a relatively large margin, working roll is with intermediate calender rolls roll gap pressure peak value by original
The 7820.59KN/m come drops to 7022.25KN/m, has dropped 10.2%, intermediate calender rolls and backing roll roll gap pressure peak value by
9988.50KN/m drops to 8929.37KN/m, has dropped 10.6%, has reached the set goal.Ideal format product before and after optimization
The comparison of finished product roll gap pressure cross direction profiles peak value is as shown in table 5.
Table 5 optimizes front and rear finished product roll gap pressure cross direction profiles peak value and compares
The present invention tests on 1420 sour rolling mill of plum steel cold rolling mill, according to the knowhow of plum steel cold rolling mill, sheet
Scheme of the invention is practicable, and effectively tandem mills are reduced with roller consumption and is controlled with the quick-fried roller of backing roll, can be into one
Step is generalized to the other similar units of Mei Gang, and popularizing application prospect is than broader.
It should be noted that above-described embodiment, is not used for limiting protection scope of the present invention, in above-mentioned technical proposal
On the basis of made equivalents or replacement each fall within the range that the claims in the present invention are protected.
Claims (8)
1. a kind of roll profile optimization method for being suitable for six roller tandem mills with the prevention of quick-fried roller for target, which is characterized in that
It mainly includes the following steps that, it is specific as follows：
(a) capital equipment and technological parameter of unit are collected；
(b) the specification feature and technological parameter of strip are collected；
(c) working roll, intermediate calender rolls bending roller force and intermediate calender rolls shifting amount setup parameter initial value are given；
(d) initial curve parameter and object function initial value are given；
(e) the corresponding plate shape value of ideal format product and roll gap pressure cross direction profiles value is obtained
(f) judge inequalityWhether set up simultaneouslyIf inequality is set up, step (g) is transferred to, if inequality
It is invalid, roller curve parameter is adjusted, is transferred to step (e)；
(g) calculating target function G (X)；
(h), judge whether Powell conditions are true, if not, step (e) is transferred to, until Powell conditions are set up, terminates meter
It calculates, obtains optimum roll camber parameter of curve；
(i), intermediate calender rolls and backing roll roller curve optimal setting are provided, above-mentioned roller curve parameter is substituted into the roller of intermediate calender rolls
The roller curve equation of type curvilinear equation and backing roll optimized after the roller curve equation of intermediate calender rolls and the roller of backing roll
Type curvilinear equation.
2. the roll profile optimization side according to claim 1 for being suitable for six roller tandem mills with the prevention of quick-fried roller for target
Method, which is characterized in that the step (a) collects the capital equipment and technological parameter of unit, specific as follows：
A1 the main equipment parameters of tandem mills) are collected, are mainly included：Working roll barrel length Lw, work roll diameter Dw, in
Between roller barrel length Lm, intermediate roller diameter Dm, backing roll barrel length Lb, bearing roller diameter Db, backing roll transmission side and active side
Housing screw centre-to-centre spacing lb, intermediate roller driven side and active side bowed roller hydraulic cylinder centre-to-centre spacing lm, working roll transmission side with work lateral bending
Roller hydraulic cylinder centre-to-centre spacing lw；
A2 the technology characteristics parameter of tandem mills) is collected, is mainly included：The maximum positive bending roller force of working rollMaximum is negative curved
Roller powerThe maximum positive bending roller force of intermediate calender rollsThe negative bending roller force of maximumIntermediate calender rolls are maximum uneven with backing roll license
Evenness coefficient kmb, intermediate calender rolls and working roll permit maximum unevenness coefficient kmw, the maximum unevenness coefficient of draught pressure license
kq, intermediate calender rolls maximum roll shifting amount ξ allowablemax。
3. the roll profile optimization side according to claim 1 for being suitable for six roller tandem mills with the prevention of quick-fried roller for target
Method, which is characterized in that the specification feature and technological parameter of step (b) the collection strip are specific as follows：Mainly including band
Initial strength σs0j, strain hardening coefficient ksj, band width Bj, supplied materials thickness h0j, exit thickness h1j, muzzle velocity vj, band
The outlet tension T of material1j, entrance tension T0j, incoming profile distribution Lij。
4. the roll profile optimization side according to claim 1 for being suitable for six roller tandem mills with the prevention of quick-fried roller for target
Method, which is characterized in that it is initial that the step (c) gives working roll, intermediate calender rolls bending roller force and intermediate calender rolls shifting amount setup parameter
Value；In order to improve regulating power of the unit to exit plate shape to greatest extent, work roll bending power is enabled
Intermediate calender rolls bending roller forceIntermediate calender rolls shifting amount is set as ground state ξ=0.
5. the roll profile optimization side according to claim 1 for being suitable for six roller tandem mills with the prevention of quick-fried roller for target
Method, which is characterized in that the step (d) gives initial curve parameter and object function initial value is, gives initial curve ginseng
NumberObject function initial value G0=1000000.
6. the roll profile optimization side according to claim 1 for being suitable for six roller tandem mills with the prevention of quick-fried roller for target
Method, which is characterized in that the step (e) calculates ideal format product j in ground state bending roller force S0Under plate shape value and roller between press
Power, draught pressure cross direction profiles value；
E1 corresponding plate shape value) is calculated
(wherein, σmaxFor lateral unit tension maximum value；σminFor lateral unit tension minimum value；For mean unit tension.)
E2) according to flow of metal model, roll elastic deformation model and the Coordinate deformation equation of intermediate calender rolls and backing roll, work
The Coordinate deformation equation of roller and intermediate calender rolls calculates roll gap pressure cross direction profiles value qmwij,qmbijAnd draught pressure cross direction profiles value
qij。
7. the roll profile optimization side according to claim 1 for being suitable for six roller tandem mills with the prevention of quick-fried roller for target
Method, which is characterized in that the step (f) judges inequalityWhether set up simultaneouslyIf inequality is set up,
Step (g) is transferred to, if inequality is invalid, roller curve parameter is adjusted, is transferred to step (e)；
(wherein, g'mw(X) it is working roll and intermediate calender rolls maximum unevenness coefficient,g'mb(X) it is backing roll and intermediate calender rolls maximum unevenness coefficient,g'q(X) it is draught pressure maximum unevenness coefficient,
8. the roll profile optimization side according to claim 1 for being suitable for six roller tandem mills with the prevention of quick-fried roller for target
Method, which is characterized in that the step (g) calculates the object function F of j-th of productj(X)=α1Fsj(X)+α2gmwj(X)+α3gmbj
(X)+α4gqj(X), it is for the belt steel product calculating target function of all specificationsValue；
(wherein, α1+α2+α3+α4=1.0 be weighting coefficient；Fs(X) it is band steel shape control target function；σ1iFor forward pull cross direction profiles value；T1For average forward pull；gmw(X) for working roll with
Intermediate calender rolls are averaged unevenness coefficient,gmb(X) it is backing roll and centre
Equal unevenness coefficient is rolled out,gq(X) it is average uneven for draught pressure
Spend coefficient,qmwiFor working roll and intermediate calender rolls roll force distribution value；qmbiFor bearing
Roller and intermediate calender rolls roll force distribution value；qiFor draught pressure Distribution Value；nmwThe item member number between working roll and intermediate calender rolls roller；nmbFor
Item member number between backing roll and intermediate calender rolls roller；nqFor draught pressure item member number；βjFor yield weighting coefficient, by the life of each specification product
Ratio of the yield in total output is produced to determine).
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| CN111842506A (en) * | 2020-06-30 | 2020-10-30 | 宝钢湛江钢铁有限公司 | Roll shifting control method for five-frame six-roll cold continuous rolling unit |
| CN112380634A (en) * | 2019-07-29 | 2021-02-19 | 上海梅山钢铁股份有限公司 | Method for improving effective working layer of finish rolling working roll suitable for hot-rolled old rolling mill |
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