CN102716917B - Method for manually adjusting and computing shape target curve of cold-rolled steel strip - Google Patents
Method for manually adjusting and computing shape target curve of cold-rolled steel strip Download PDFInfo
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- CN102716917B CN102716917B CN201210207255.6A CN201210207255A CN102716917B CN 102716917 B CN102716917 B CN 102716917B CN 201210207255 A CN201210207255 A CN 201210207255A CN 102716917 B CN102716917 B CN 102716917B
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Abstract
The invention provides a method for manually adjusting and computing a shape target curve of a cold-rolled steel strip. The method includes 1) receiving original parameters, which are transmitted by a process computer in real time, of a cold-rolled strip coil which is rolled currently; 2) computing the number of effective shape measurement sections and coordinates of shape target curve feature points corresponding to the effective shape measurement sections; 3) inputting manual adjustment coefficients of a bending roller and computing a manual adjustment additional curve of the bending roller; 4) inputting oblique manual adjustment coefficients of a roller and computing an oblique manual adjustment additional curve of the roller; 5) inputting manual adjustment coefficients of edges and the number of the adjusted edges and computing manual adjustment additional curves of the edges; 6) sequentially adding the additional curves obtained from the step 3), the step 4) and the step 5) according to the coordinates xi of the shape target curve feature points to obtain a shape target value manual adjustment additional curve capable of automatically meeting internal stress self-phase-balance conditions; and 7) superimposing the shape target value manual adjustment additional curve onto a basic shape target curve to obtain the shape target curve which is manually adjusted and compensated.
Description
Technical field
The invention belongs to cold-rolled strip steel shape control technology field, particularly relate to a kind of manual Adjustable calculation method of cold-rolled strip steel shape aim curve.
Background technology
Flatness object curve refers to can for operator's setting, selection and the suite line as the final control objectives of plate shape in plat control system.It may be level curve under normal circumstances, also may be parabola or its high order curve, and the distribution situation longitudinally participating in stress gone up in the width direction by the rear band that rolls substantially reflected desired by operator.In traditional cold-rolled strip steel shape control concept, as long as it has been generally acknowledged that the uneven distribution of cancellation band steel internal residual stress, the tensile stress distribution making it survey online becomes a horizontal linear, then the plate shape after rolling will be good.But the design principle of this flatness object curve has been proved to be effect and bad in actual production.The plat control system of ABB AB has further developed this thought, the flatness object curve of available setting is improved to the plate-shape standard curve with updating currently form, make Strip Shape Control have more flexibility, therefore, its method has important theoretical and practical significance.According to the test of ABB plat control system of domestic introduction and the result of trace analysis, can find out that its flatness object curve mainly contains following important function in Strip Shape Control: 1) compensate the impact of on-the-spot additive factor on Shape signal.In the operation of rolling of Strip, there is many factors and interference is produced to plate shape measurement signal, the cross direction profiles of such as rolling rear strip temperature is uneven, the flexure of measuring roller, equipment is installed and wearing and tearing produce position deviation and coiling machine, on the impact of strip coiling, all make the actual plate shape of rolling rear band be that online plate shape of surveying has certain deviation with rolling.Now one of object setting flatness object curve is exactly the impact in order to compensate these factors, realizes the object that final finished plate shape is very smooth.2) control of strip crown is realized.The strip crown of Strip is the important indicator weighing end product quality.When supplied materials is identical with other conditions, the flatness object curve of certain forms correspond to the strip crown of certain forms.According to the size of strip crown, adopt corresponding flatness object curve to be rolled, not only control the glacing flatness of band, and achieve the control of strip crown.3) rolling and subsequent process is met to the requirement of plate shape.The requirement of the operation of rolling to Strip Shape itself prevents band from producing larger buckling deformation online.If roll the excessive band that may cause of front wave to be folded into roll gap; Roll rear wave excessive may making can not effectively contact between band with measuring roller, tensile stress value cannot be surveyed really.On the other hand, in plate & strip production process, rolling is one of them intermediate link, and plate shape is the important indicator factor of carrying throughout, Strip Shape Control quality not only will meet milling train and finished product thereof to the requirement of plate shape precision, and must consider the requirement of subsequent process to plate shape, as in bell furnace, continuous annealing furnace, neither wish excessive flatness defect, also do not wish definitely straight Strip Shape.According to the requirement of following process, in production, utilize different flatness object curves can meet different requirements to Strip Shape.Meanwhile, because flatness object curve is actually the desirable distribution curve rolling rear band participation internal stress, therefore the internal stress of demand fulfillment on its cross section is from phase balance condition, and namely on flatness object curve, all settings sums being set to correspondence are zero.
On the other hand, actual Rolling Production process is complicated and changeable, the basic flatness object curve of theory setting not necessarily coincide with practical condition completely, therefore certain manual adjustment can be carried out in plat control system operator station to flatness object curve by technical staff in process of production, to improve the flexibility of control system.Position up till now, conventional manual adjustment additive curve mainly contains: roller manually adjusts additive curve, roller declination and manually adjusts additive curve and edge manually adjusts additive curve.Wherein, roller manually adjusts additive curve mainly in order to eliminate the middle wave of outlet band steel or bilateral unrestrained defect, roller declination receives adjustment additive curve mainly in order to eliminate the monolateral unrestrained defect of outlet band steel, and edge when manually adjusting additive curve mainly rolling thin strip in order to avoid broken belt, people makes to roll the plate shape stress distribution that rear band has micro-bilateral unrestrained formula, i.e. so-called slack list rolling.In actual production, normally used roller manually adjusts additive curve and is:
, here
for the manual regulation coefficient of roller;
for the coordinate value of each measuring section that is the origin of coordinates with Dai Gang center, it has sign, and be negative with fore side, transmission side is just;
for the coordinate value of the effective measurement point of fore side steel edge portion.And normally used roller declination manually adjusts additive curve is:
, in formula
for roller declination manually adjusts parameter; The method for designing that edge manually adjusts additive curve is then generally directly to the plate shape desired value of several measured zone of selected close fore side and transmission side
modify.It is worthy of note, this flatness object curve manual adjustment method can not meet is being with the internal stress on steel cross section from phase balance condition, namely
.All shown by theory deduction and practical experience, the cold-rolled strip steel shape aim curve obtained by above-mentioned existing manual Adjustable calculation method destroys the internal stress of basic flatness object curve from phase balance condition, and the flatness object curve that these class methods obtain is applied in Strip Shape Control the technical problem that outlet belt plate shape control effects can be caused to be deteriorated.Therefore, a kind of effective manual Adjustable calculation method of cold-rolled strip steel shape aim curve of research and development is the necessary condition and the current demand that improve cold-rolled strip steel shape Mass Control.
Summary of the invention
The object of the present invention is to provide a kind of manual Adjustable calculation method of cold-rolled strip steel shape aim curve, cause outlet belt plate shape control effects variation that the technical problem of broken belt accident even occurs to solve in band steel production process because the setting of cold-rolled strip steel shape aim curve is unreasonable.
In order to solve the problems of the technologies described above, the technical scheme that the present invention takes is:
A kind of manual Adjustable calculation method of cold-rolled strip steel shape aim curve, is characterized in that: it comprises the following steps:
1) initial parameter of the cold rolling roll coil of strip in the current rolling that transmits in real time of receiving course computer, comprising: the wide measuring section number n of the width B of cold-strip steel, plate shape roller mid portion
1, wide measuring section width value L
1, the narrow measuring section number n of plate shape roller two end portions
2, narrow measuring section width value L
2;
2) according to the initial parameter of the cold rolling roll coil of strip in the current rolling received, the effective measuring section number N of computing board shape; Wherein judge that the whether effective standard of measuring section is: just think that this measuring section is effective when the measurement section strip steel coverage rate of plate shape roller is more than 50%;
Set up reference axis, calculate the flatness object curve characteristic point coordinate x that effective measuring section is corresponding
i;
3) the manual regulation coefficient A of roller is inputted
man_bendafter, the flatness object curve characteristic point coordinate x corresponding according to effective measuring section
i, automatically calculate roller and manually adjust additive curve;
4) the manual regulation coefficient A of roller declination is inputted
man_tiltafter, the flatness object curve characteristic point coordinate x corresponding according to effective measuring section
i, automatically calculate roller declination and manually adjust additive curve;
5) the manual regulation coefficient A of edge is inputted
sidewith edge adjustment number n, edge adjustment number refers to the close fore side or the close effective measuring section number of transmission side plate shape that carry out amendment when edge manually adjusts, the flatness object curve characteristic point coordinate x corresponding according to effective measuring section
i, automatically calculate edge and manually adjust additive curve;
6) by step 3)-5) the manual adjustment additive curve that obtains is according to flatness object curve characteristic point coordinate x
ibe added successively, automatically met internal stress and manually adjust additive curve from the plate shape desired value of phase balance condition;
7) plate shape desired value is manually adjusted additive curve to be added on basic flatness object curve, obtain the flatness object curve after manually adjustment compensation.
By such scheme, described step 7) also comprises: being presented on active station by manually adjusting the flatness object curve after compensation, dropping into plat control system after being confirmed by technologist.
By such scheme, described step 2) formula of mathematical of the effective measuring section number N of plate shape is:
（1），
In formula (1),
represent bracket function;
function is defined as: if x<0.5,
, otherwise
;
To be with steel transverse center point for the origin of coordinates, fore side direction is negative direction, and transmission side direction is the reference axis that positive direction sets up on strip width direction, the flatness object curve characteristic point coordinate x that the N number of effective measuring section calculated is corresponding
i(i=1,2 ..., N) be:
，
(
)，
，
(
)
,
(
)，
，
(
)。
By such scheme, the roller of described step 3) manually adjusts additive curve formula and is:
。
By such scheme, the roller declination of described step 4) manually adjusts additive curve formula and is:
。
By such scheme, the edge of described step 5) manually adjusts additive curve formula and is:
；
W in formula
ifor the developed width of plate shape roller i-th effective measuring section, if wide measuring section W
ivalue is L
1if, narrow measuring section W
ivalue is L
2.
Beneficial effect of the present invention is:
1, plate shape desired value manually being adjusted additive curve is added on basic flatness object curve, obtain the flatness object curve after manually adjustment compensation, the controlling functions such as the monolateral wave of the operation of rolling, middle wave, bilateral wave and slack list rolling can be realized flexibly, can ensure that again internal stress when flatness object curve sets is from phase balance condition, be conducive to the stable of control system.
2, simple, the convenience of calculation of the inventive method step, meets the requirement of real-time of existing Automatic Flatness Control system completely.
3, by adopting the inventive method, automatically band steel internal stress is met from phase balance condition when can ensure that flatness object curve manually adjusts, suit belt steel rolling production process objective law, effective solution in band steel production process causes outlet belt plate shape control effects variation that the technical problem of broken belt accident even occurs, for the Strip Shape Control level significantly improving cold-strip steel provides strong guarantee because the setting of cold-rolled strip steel shape aim curve is unreasonable.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention.
Fig. 2 is one group of flatness object curve characteristic point distribution plots in one embodiment of the invention.
Fig. 3 is that in one embodiment of the invention, one group of plate shape desired value manually adjusts additive curve distribution map.
Fig. 4 is one group of basic flatness object curve distribution map in one embodiment of the invention.
Fig. 5 be in one embodiment of the invention one group manually adjust the flatness object curve distribution map after compensation.
Detailed description of the invention
Fig. 1 is flow chart of the present invention, comprises the following steps: the 1) initial parameter of the cold rolling roll coil of strip in the current rolling that transmits in real time of receiving course computer, comprising: the wide measuring section number n of the width B of cold-strip steel, plate shape roller mid portion
1, wide measuring section width value L
1, the narrow measuring section number n of plate shape roller two end portions
2, narrow measuring section width value L
2; 2) according to the initial parameter of the cold rolling roll coil of strip in the current rolling received, the effective measuring section number N of computing board shape; Wherein judge that the whether effective standard of measuring section is: just think that this measuring section is effective when the measurement section strip steel coverage rate of plate shape roller is more than 50%; To be with steel transverse center point for the origin of coordinates, fore side direction is negative direction, and transmission side direction is that positive direction to set up on strip width direction to obtain reference axis, calculates the flatness object curve characteristic point coordinate x that effective measuring section is corresponding
i; 3) the manual regulation coefficient of roller is inputted
after, the flatness object curve characteristic point coordinate x corresponding according to effective measuring section
i, automatically calculate roller and manually adjust additive curve; 4) the manual regulation coefficient of roller declination is inputted
after, the flatness object curve characteristic point coordinate x corresponding according to effective measuring section
i, automatically calculate roller declination and manually adjust additive curve; 5) the manual regulation coefficient of edge is inputted
with edge adjustment number n, edge adjustment number refers to the close fore side or the close effective measuring section number of transmission side plate shape that carry out amendment when edge manually adjusts, the flatness object curve characteristic point coordinate x corresponding according to effective measuring section
i, automatically calculate edge and manually adjust additive curve; 6) by step 3)-5) the manual adjustment additive curve that obtains is according to flatness object curve characteristic point coordinate x
ibe added successively, automatically met internal stress and manually adjust additive curve from the plate shape desired value of phase balance condition; 7) plate shape desired value is manually adjusted additive curve to be added on basic flatness object curve, obtain the flatness object curve after manually adjustment compensation.
Four rollers, six roller single chassis or multi-frame tandem mills is can be used for based on the manual Adjustable calculation method of cold-rolled strip steel shape aim curve of the present invention.Below for a single chassis six-high cluster mill, six-high cluster mill the product of rolling can comprise common plate, high-strength steel, part stainless steel and silicon steel etc.The present embodiment rolling be middle high grade silicon steel, type is UCM milling train, and Strip Shape Control means comprise roller declination, the positive and negative roller of working roll, the positive roller of intermediate calender rolls, intermediate roll shifting and emulsion section cooling etc.Wherein intermediate roll shifting carries out presetting according to strip width, and Adjustment principle is alignd with steel edge portion at intermediate calender rolls body of roll edge, and also can consider interpolation correction by operation side, after being transferred to position, holding position is constant; Emulsion section cooling has larger characteristic time lag.Thus the Strip Shape Control means of on-line control mainly contain roller declination, the positive and negative roller of working roll, the positive roller of intermediate calender rolls three kinds, for eliminating the flatness defects such as monolateral wave, middle wave and bilateral wave with steel in the operation of rolling.The basic mechanical design feature index of this unit and device parameter are:
Mill speed: Max 900m/min, draught pressure: Max 18000KN, maximum rolling force square: 140.3KN × m, coiling tension: Max 220KN, main motor current: 5500KW;
Supplied materials thickness range: 1.8 ~ 2.5mm, supplied materials width range: 850 ~ 1350mm, outgoing gauge scope: 0.3mm ~ 1.0mm;
Work roll diameter: 290 ~ 340mm, working roll height: 1400mm, intermediate calender rolls diameter: 440 ~ 500mm, intermediate calender rolls height: 1640mm, backing roll diameter: 1150 ~ 1250mm, backing roll height: 1400mm;
Every side work roll bending power :-280 ~ 350KN, every side intermediate calender rolls bending roller force: 0 ~ 500KN, intermediate calender rolls is traversing amount :-120 ~ 120mm axially, auxiliary hydraulic system pressure: 14MPa, balance bending system pressure: 28MPa, press down system pressure: 28MPa.
Plate shape roller (being generally contact plate profile instrument) adopts ABB AB's plate shape roller of Sweden, this plate shape roller roller footpath 313mm, be made up of single solid steel axle, a measured zone is divided in the width direction every 52mm or 26mm, surrounding vertically at measuring roller in each measured zone is uniform-distribution with four grooves to place magnetoelasticity force snesor, the outside of sensor wrap up by steel loop.In this example, product specification (thickness × width) is: 0.30mm × 1250mm, and in the middle of plate shape roller, 14 are measured sector width is 52mm, and all the other are 26mm near transmission side and each 12 the measurement sector width of fore side, plate shape roller total length 1352mm.
In addition, in the present embodiment measuring roller PCM cell by TCP/IP connect carry out data communication with plate shape computer, and active station HMI with plate shape computer, be also be connected by TCP/IP to exchange data between process computer with plate shape computer.
Based on Fig. 1, the concrete calculation process that the present embodiment carries out the manual Adjustable calculation of cold-rolled strip steel shape aim curve is:
1) initial parameter of the cold rolling roll coil of strip in the current rolling that transmits in real time of receiving course computer, the present embodiment comprises: the width B=1250mm of cold-strip steel, the wide measuring section number n of plate shape roller mid portion
1=14 and wide measuring section width value L
1=52mm, the narrow measuring section number n of plate shape roller two end portions
2=24 and narrow measuring section width value L
2=26mm.
2) effective measuring section number N and flatness object curve characteristic point coordinate x is calculated
i(i=1,2 ..., N).Due to
, so the formula of mathematical of the effective measuring section number N of plate shape is in the present embodiment:
（1），
In formula (1),
represent bracket function, such as, in the present embodiment
;
function is defined as: if x<0.5,
, otherwise
, namely only have and just think that this measuring section is effective, in computation rule the present embodiment when section strip steel coverage rate is measured more than 50% in plate profile instrument two ends
.
So, according to plate profile instrument measuring section actual arrangement situation in the present embodiment, by plate profile instrument fore side to transmission side, have successively
individual narrow measuring section,
individual wide measuring section,
individual narrow measuring section is with steel effectively to cover.
To be with steel transverse center point for the origin of coordinates, fore side direction is negative direction, and transmission side direction is that positive direction to set up on strip width direction to obtain reference axis.Then N=34 the flatness object curve characteristic point coordinate x that effectively measuring section is corresponding is calculated
i(i=1,2 ..., 34):
，
(
)，
，
(
)，
,
(
)，
，
(
)。
34 the flatness object curve characteristic point distribution plots calculated in the present embodiment are given in Fig. 2.
3) in the present embodiment, before manual adjustment does not drop into, milling train outlet band steel presents bilateral wave to a certain degree, and operator is at the manual regulation coefficient of active station input roller
after, automatically calculate roller and manually adjust additive curve:
。
4) in the present embodiment, before manual adjustment does not drop into, milling train outlet band steel presents slight the right wave, and operator is at the manual regulation coefficient of active station input roller declination
after, automatically calculate roller declination and manually adjust additive curve:
。
5) in the present embodiment, due to hightension rolling and band belongs to thin strip, easily broken belt accident occurs, therefore people makes to roll the plate shape stress distribution that rear band has micro-bilateral unrestrained formula, i.e. so-called slack list rolling.Operator is at the manual regulation coefficient of active station input edge
with edge adjustment number n=3, here edge adjustment number refers to the close fore side or the close effective measuring section number of transmission side plate shape that carry out amendment when edge manually adjusts, and that is edge is manually adjusted to 3 effective measuring sections near fore side and 3 effective measuring sections near transmission side.Automatically calculate edge and manually adjust additive curve:
W in formula
ifor the developed width of plate shape roller i-th effective measuring section, in the present embodiment, there is W
i=26mm (1≤i≤10 and 25≤i≤34), W
i=52mm (11≤i≤24).
6) by step 3)-5) manually adjusted additive curve according to coordinate x
ibe added successively, automatically met internal stress and manually adjust additive curve from the plate shape desired value of phase balance condition:
。
Fig. 3 gives the one group of plate shape desired value calculated in the present embodiment and manually adjusts additive curve distribution map.
7) plate shape desired value manually being adjusted additive curve is added on basic flatness object curve, obtain the flatness object curve after manually adjustment compensation and be presented on active station HMI, drop into plat control system after being confirmed by technologist, complete cold-rolled strip steel shape closed loop control function.
Fig. 4 gives the basic flatness object curve distribution map based on theory setting provided by process computer in the present embodiment, as seen from Figure 4, basic flatness object curve is comparatively large at two ends tension value, easily causes the broken belt accident under hightension rolling condition to occur.Meanwhile because actual Rolling Production process is complicated and changeable, the basic flatness object curve of theory setting not necessarily coincide with practical condition completely, therefore certain manual adjustment can be carried out in plat control system operator station to flatness object curve by technical staff in process of production, to improve the flexibility of control system.In the present embodiment, Fig. 4 gives the basic flatness object curve that plat control system uses.Because theory calculate is with the difference existed between milling train actual condition, the cold-rolled steel strip products plate shape of producing is unsatisfactory, is usually attended by the unrestrained flatness defect of bilateral wave and slight the right and occurs; In addition, the present embodiment belongs to hightension rolling and exit plate shape thickness only has 0.30mm, and more disadvantageously, on the strip width direction of the basic plate shape curve that Fig. 4 provides, two ends tension force is higher than mid portion again, thus easily lures milling train generation broken belt accident into.
In order to solve the problem, adopt a kind of manual Adjustable calculation method of cold-rolled strip steel shape aim curve that the present invention proposes, utilize roller manually to adjust additive curve and eliminate the bilateral unrestrained defect exporting belt plate shape, utilize roller declination manually to adjust additive curve and eliminate the right wave flatness defect exporting belt plate shape, the slack list rolling function utilizing edge manually to adjust additive curve to realize preventing broken belt accident from occurring, meanwhile, automatically band steel internal stress is met from phase balance condition when automatically can ensure that flatness object curve manually adjusts, suit belt steel rolling production process objective law.
Fig. 5 give the one group of plate shape desired value calculated in the present embodiment manually adjust additive curve (i.e. Fig. 3) and based on the basic flatness object curve (i.e. Fig. 4) of theory setting be superimposed together obtain manual adjustment compensate after flatness object curve.To drop in the present embodiment after plat control system at the flatness object curve that Fig. 5 is obtained, effectively eliminate the unrestrained flatness defect of bilateral wave and slight the right of original outlet band steel, and be with steel two ends tension force suitably reduce after it also avoid the serious accidents such as operation of rolling band of discontinuance and occur.In a word, the inventive method effectively can solve in band steel production process and cause outlet belt plate shape control effects variation that the technical problem of broken belt accident even occurs, for the Strip Shape Control level significantly improving cold-strip steel provides strong guarantee because the setting of cold-rolled strip steel shape aim curve is unreasonable.
Above embodiment is only for illustration of Computation schema of the present invention and feature, and its object is to enable those skilled in the art understand content of the present invention and implement according to this, protection scope of the present invention is not limited to above-described embodiment.So all equivalent variations of doing according to disclosed principle, mentality of designing or modification, all within protection scope of the present invention.
Claims (6)
1. the manual Adjustable calculation method of cold-rolled strip steel shape aim curve, is characterized in that: it comprises the following steps:
1) initial parameter of the cold rolling roll coil of strip in the current rolling that transmits in real time of receiving course computer, comprising: the wide measuring section number n of the width B of cold-strip steel, plate shape roller mid portion
1, wide measuring section width value L
1, the narrow measuring section number n of plate shape roller two end portions
2, narrow measuring section width value L
2;
2) according to the initial parameter of the cold rolling roll coil of strip in the current rolling received, the effective measuring section number N of computing board shape; Wherein judge that the whether effective standard of measuring section is: just think that this measuring section is effective when the measurement section strip steel coverage rate of plate shape roller is more than 50%;
Set up reference axis, calculate the flatness object curve characteristic point coordinate x that effective measuring section is corresponding
i;
3) the manual regulation coefficient of roller is inputted
after, the flatness object curve characteristic point coordinate x corresponding according to effective measuring section
i, automatically calculate roller and manually adjust additive curve;
4) the manual regulation coefficient of roller declination is inputted
after, the flatness object curve characteristic point coordinate x corresponding according to effective measuring section
i, automatically calculate roller declination and manually adjust additive curve;
5) the manual regulation coefficient of edge is inputted
with edge adjustment number n, edge adjustment number refers to the close fore side or the close effective measuring section number of transmission side plate shape that carry out amendment when edge manually adjusts, the flatness object curve characteristic point coordinate x corresponding according to effective measuring section
i, automatically calculate edge and manually adjust additive curve;
6) by step 3)-5) the manual adjustment additive curve that obtains is according to flatness object curve characteristic point coordinate x
ibe added successively, automatically met internal stress and manually adjust additive curve from the plate shape desired value of phase balance condition;
7) plate shape desired value is manually adjusted additive curve to be added on basic flatness object curve, obtain the flatness object curve after manually adjustment compensation.
2. the manual Adjustable calculation method of cold-rolled strip steel shape aim curve according to claim 1, it is characterized in that: described step 7) also comprises: being presented on active station by manually adjusting the flatness object curve after compensation, after being confirmed by technologist, dropping into plat control system.
3. the manual Adjustable calculation method of cold-rolled strip steel shape aim curve according to claim 1 and 2, is characterized in that: described step 2) formula of mathematical of the effective measuring section number N of plate shape is:
（1），
In formula (1),
represent bracket function;
function is defined as: if x<0.5,
, otherwise
;
To be with steel transverse center point for the origin of coordinates, fore side direction is negative direction, and transmission side direction is the reference axis that positive direction sets up on strip width direction, the flatness object curve characteristic point coordinate x that the N number of effective measuring section calculated is corresponding
i(i=1,2 ..., N) be:
，
(
)，
，
(
)
,
(
)，
，
(
)。
4. the manual Adjustable calculation method of cold-rolled strip steel shape aim curve according to claim 1 and 2, is characterized in that: the roller of described step 3) manually adjusts additive curve formula and is:
。
5. the manual Adjustable calculation method of cold-rolled strip steel shape aim curve according to claim 1 and 2, is characterized in that: the roller declination of described step 4) manually adjusts additive curve formula and is:
。
6. the manual Adjustable calculation method of cold-rolled strip steel shape aim curve according to claim 1 and 2, is characterized in that: the edge of described step 5) manually adjusts additive curve formula and is:
；
W in formula
ifor the developed width of plate shape roller i-th effective measuring section, if wide measuring section W
ivalue is L
1if, narrow measuring section W
ivalue is L
2.
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| CN103801580B (en) * | 2014-01-24 | 2017-02-08 | 江苏省沙钢钢铁研究院有限公司 | Galvanized full-hard board cold-rolling edge crack control method in consideration of board shape |
| CN108655188B (en) * | 2017-03-30 | 2020-03-06 | 宝山钢铁股份有限公司 | Plate shape measurement error compensation method |
| CN110125189B (en) * | 2019-06-18 | 2021-04-02 | 中冶赛迪技术研究中心有限公司 | Method for setting target strip shape curve of cold-rolled strip steel and computer equipment |
| CN111889514B (en) * | 2020-07-27 | 2022-05-17 | 苏州博恩普特测控科技有限公司 | Optimized calculation method for cold-rolled plate shape target curve |
| CN115007656B (en) * | 2022-05-12 | 2023-03-24 | 燕山大学 | Setting method of normalized plate-shaped target curve |
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| CN102716917A (en) | 2012-10-10 |
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