CN106180210B - The control method and system of cold-strip steel head strip shape quality - Google Patents
The control method and system of cold-strip steel head strip shape quality Download PDFInfo
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- CN106180210B CN106180210B CN201610854163.5A CN201610854163A CN106180210B CN 106180210 B CN106180210 B CN 106180210B CN 201610854163 A CN201610854163 A CN 201610854163A CN 106180210 B CN106180210 B CN 106180210B
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2263/00—Shape of product
- B21B2263/04—Flatness
Abstract
The present invention provides the control method and system of a kind of cold-strip steel head strip shape quality, and this method includes：It obtains the corner flowt coefficient of different rolling mode different steel specifications and stores；The controlled quentity controlled variable of the work roll bending power and intermediate calender rolls bending roller force is controlled according to different corner flowt coefficients is called；The coiling tension of strip steel head is detected, when mistake or overshoot occurs in the coiling tension of strip steel head, keeps work roll bending power with intermediate calender rolls bending roller force until coiling tension enters the stabilization sub stage；When coiling tension enters the stabilization sub stage and during still less than goal-selling tension, keep intermediate calender rolls bending roller force constant, correct the controlled quentity controlled variable of work roll bending power until coiling tension reaches goal-selling tension.The present invention effectively eliminates the side wave flatness defect that strip steel head occurs in shear stage, improves strip steel head strip shape quality；Strip lumber recovery is improved on the whole, reduces belt steel rolling cost.
Description
Technical field
The invention belongs to cold-strip steel technical fields, and more particularly to one kind in cold-rolled process, strip is in shear stage
When head strip shape quality control method and system.
Background technology
With the fast development of domestic and international equipment manufacture, strip shape quality requirement of the downstream user to cold-rolled steel strip products
Increasingly increase, especially for the industries such as superior automobile and high-end product manufacture.Then, cold-rolled strip steel shape quality oneself become examine
One of the key technical indexes of nucleus band steel product.For control technology angle, cold-rolled strip steel shape control technology is one and melts
Conjunction technique, equipment, hydraulic pressure, control and computer etc. are mutually coupled highly complex between several subject knowledges, control system parameter
Technology.Domestic and international major integrated iron and steel works and research institution have put into a large amount of human and material resources and financial resources to research and develop raising plate
The methods and techniques of shape control accuracy, to enhance the core technology of iron and steel enterprise and the market competitiveness.
Fig. 1 is six-roll cold mill schematic diagram, including working roll 2 (up and down each 1), intermediate calender rolls 3 (up and down each 1) and support
(each 1) up and down, roll roller include intermediate calender rolls bending roller force and work roll bending power to roller 4, and usual working roll has positive and negative roller work(
Can, intermediate calender rolls have the function of positive roller, and in the operation of rolling, effect is good to ensure simultaneously for intermediate calender rolls bending roller force and work roll bending power
Good strip shape quality.Fig. 2 is the production technology and equipments arrangement for five racks, the six roller tandem mills being most widely used at present
Schematic diagram, band 1 are sent to inlet of rolling mill after 5 uncoiling of uncoiler, reach defined by the rolling of five six-roll cold mills
After thickness and it is sent to coiling machine 6 and is batched.When volume reaches target weight or weld seam passes through again, progress flying shear is needed to move
Make, complete bundling.
However, in cold continuous rolling process, the head of a coiled strip steel tends to out thereafter when two coiled strip steels are cut
Existing larger flatness defect is usually expressed as side wave, as shown in Figure 3.Its reason essentially consists in：
1) moment of strip cutting, the preceding tensile stress suffered by the head of latter coiled strip steel becomes zero, and from having sheared
In a period of time after, tension is incrementally increasing, and plays pendulum, and is hidden under hightension state originally as a result,
Potential plate shape, which has reformed into, to be shown in plate shape；
2) strip cutting stage, forward pull are gradually increased to stable state setting value by zero, and the variation of tension can directly influence
The variation of roll-force, meanwhile, cutting stage speed is relatively low, but also roll-force and steady-state process be there are bigger difference, if this
When still keep the bending roller force setting value of steady-state process, usually just will appear larger bilateral unrestrained flatness defect；
3) often strip is carried out rushing crescent moon processing when welding due to strip, leads to band occur in strip shearing transition region
The situation that steel width narrows, at this time if still using the roll-force of normal width, it will it is bigger than actual value, so as to cause double
Side wave flatness defect；
4) weld seam shear stage is crossed, mill speed is low, and plate shape measurement value at this time may be inaccurate, AFC (Strip Shape Control systems
System) function cannot be put into, thus also be difficult to ensure that the strip shape quality in this stage.
In short, in terms of existing technologies, strip steel head is susceptible to side wave flatness defect in shear stage, on the one hand
Influence whether the scroll quality of strip, cause bad internal scroll, misalignment in addition collapse volume phenomena such as, on the other hand due to strip
There are larger flatness defects on head, and accident occurs in order to prevent in subsequent treatment process to be cut off, so as to reduce into
Material rate, leads to economic loss.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of cold-strip steel head plate form quality
The control method and system of amount, for solve in the prior art strip steel head shearing when, because can not eliminate coiling tension fluctuate,
The problem of factors such as roll-force variation influence, strip steel head are caused to be susceptible to side wave phenomenon.
In order to achieve the above objects and other related objects, the present invention provides a kind of control of cold-strip steel head strip shape quality
Method controls the strip shape quality of strip steel head for cold-rolling mill in rolled band steel, including：
It obtains the corner flowt coefficient of different rolling mode different steel specifications and stores；Wherein, according to rolled band steel
Steel grade, width and thickness determine strip penalty coefficient corresponding under different bending roller forces and different rolling modes, bending roller force packet
Power containing work roll bending and intermediate calender rolls bending roller force, rolling mode include smooth roll rolling and hair rolling system；
The control of the work roll bending power and intermediate calender rolls bending roller force is controlled according to different corner flowt coefficients is called
Amount processed；
The coiling tension of strip steel head is detected, when mistake or overshoot occurs in the coiling tension of strip steel head, keeps work
Roll bending power is with intermediate calender rolls bending roller force until coiling tension enters the stabilization sub stage；
When coiling tension enters the stabilization sub stage and during still less than goal-selling tension, keep intermediate calender rolls bending roller force constant, repair
The controlled quentity controlled variable of positive work roll bending power is until coiling tension reaches goal-selling tension.
Another object of the present invention is to provide a kind of control system of cold-strip steel head strip shape quality, for cold-rolling mill
The strip shape quality of strip steel head is controlled in rolled band steel, including：
Memory module, for storing the corner flowt coefficient of different rolling mode different steel specifications, wherein, according to rolling
Strip steel grade processed, width and thickness determine strip penalty coefficient corresponding under different bending roller forces and different rolling modes, curved
Roller power includes work roll bending power and intermediate calender rolls bending roller force, and rolling mode includes smooth roll rolling and hair rolling system；
Acquisition module, for obtaining the corner flowt coefficient of different rolling mode different steel specifications；
Control module, for controlling the work roll bending power and centre according to different corner flowt coefficients is called
The controlled quentity controlled variable of roll bending power；
First execution module for detecting the coiling tension of strip steel head, is opened when losing occurs in the coiling tension of strip steel head
Or during overshoot, keep work roll bending power with intermediate calender rolls bending roller force until coiling tension enters the stabilization sub stage；
Second execution module, for entering the stabilization sub stage and during still less than goal-selling tension when coiling tension, in holding
Between roll bending power it is constant, correct work roll bending power controlled quentity controlled variable until coiling tension reaches goal-selling tension.
As described above, the control method and system of the cold-strip steel head strip shape quality of the present invention, have below beneficial to effect
Fruit：
The present invention according to different rolling mode different steel specifications by rolled band steel, setting different bending roller forces to mend
Coefficient is repaid, the controlled quentity controlled variable of the work roll bending power and intermediate calender rolls bending roller force is calculated by corner flowt coefficient, according to inspection
The coiling tension status (mistake, overshoot, stabilization) of measuring tape steel head, it is determined whether adjust work roll bending power and intermediate calender rolls
The controlled quentity controlled variable of bending roller force, so as to control strip steel head strip shape quality.Effectively eliminate what strip steel head occurred in shear stage
Side wave flatness defect, improves strip steel head strip shape quality, and improves strip lumber recovery on the whole, reduces strip and rolls
This is made.
Description of the drawings
Fig. 1 is shown as a kind of structure diagram of six-roll cold mill；
Fig. 2 is shown as a kind of production technology and equipments arrangement schematic diagram of five racks, six roller cold continuous rolling；
Fig. 3 is shown as strip shape quality figure when a kind of shearind section strip steel head bending roller force does not compensate；
Fig. 4 is shown as a kind of control method flow chart of cold-strip steel head strip shape quality provided by the invention；
Fig. 5 is shown as a kind of Control system architecture block diagram of cold-strip steel head strip shape quality provided by the invention；
Fig. 6 is shown as the control that a kind of shear stage strip steel head provided by the invention uses cold-strip steel head strip shape quality
The strip shape quality figure of method processed；
Fig. 7 is shown as a kind of shear stage strip steel head bending roller force provided by the invention with coiling tension variation relation figure.
Component label instructions：
M1 memory modules
M2 acquisition modules
M3 control modules
The first execution modules of M4
The second execution modules of M5
S1~S4 steps 1 are to step 4
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
It should be noted that the diagram provided in following embodiment only illustrates the basic structure of the present invention in a schematic way
Think, component count, shape and size when only display is with related component in the present invention rather than according to actual implementation in schema then
It draws, kenel, quantity and the ratio of each component can be a kind of random change during actual implementation, and its assembly layout kenel
It is likely more complexity.
Referring to Fig. 4, the control method flow chart for a kind of cold-strip steel head strip shape quality provided by the invention, is used for
Cold-rolling mill controls the strip shape quality of strip steel head in rolled band steel, including：
Step S1 obtains the corner flowt coefficient of different rolling mode different steel specifications and stores；
Wherein, it according to rolled band steel steel grade, width, thickness and rolling mode, determines corresponding to rolled band steel bending roller force
Penalty coefficient, the bending roller force include work roll bending power and intermediate calender rolls bending roller force, the rolling mode include smooth roll rolling with
Hair rolling system；
Specifically, the strip steel grade carries out grade classification according to raw material yield strength, and the yield strength is ranging from
200MPa~1000MPa, to be divided into a grade every 50MPa；The strip width ranging from 800mm~1300mm, with
A grade is divided into every 50mm；The belt steel thickness ranging from 0.20mm~2.0mm, belt steel thickness are more than 0.6mm with every
A grade is divided into every 0.1mm, belt steel thickness is less than or equal to 0.6mm to be divided into a grade, rolling die every 0.05mm
Formula includes smooth roll rolling and hair rolling system, wherein, the corner flowt coefficient is according to strip steel grade, width, thickness and rolling
Any one or a few in pattern changes and changes.Specifically, the corner flowt coefficient according to the steel grade of strip, width,
Any one or a few in thickness, bending roller force and rolling mode changes, and is corresponding with different penalty coefficients.
Wherein, based on plate shape mechanism model result of calculation, according to the plate shape and rolled bands in kind of live strip steel head
Steel steel grade, width, thickness and bending roller force determine initial compensation coefficient in different rolling modes；
Specifically, plate shape mechanism model is the analysis model established with Shape theory.
With reference to the strip shape quality in kind of live strip steel head, it can correct initial compensation coefficient by largely analyzing and obtain difference
Steel grade, width, thickness, bending roller force penalty coefficient corresponding under different rolling modes, cold-rolling mill is stored in by penalty coefficient
Computer Database in.
Step S2 controls the work roll bending power and intermediate roll bending according to different corner flowt coefficients is called
The controlled quentity controlled variable of power；
In strip steel head shear stage, according to institute's rolled band steel steel grade, width, thickness, bending roller force and rolling mode etc.
Factor calls corresponding corner flowt coefficient, wherein, which carried out by a large amount of field measurement data
It is obtained after amendment, more accurately, meanwhile, working roll and the corner flowt coefficient corresponding to intermediate calender rolls are different, control meter
Calculation machine determines the controlled quentity controlled variable of the work roll bending power and intermediate calender rolls bending roller force by exporting different corner flowt coefficients,
So as to achieve the purpose that control strip steel head strip shape quality.
Specifically, based on the work roll bending power and the setting value of intermediate calender rolls bending roller force, using corner flowt
Coefficient carrys out the controlled quentity controlled variable of evaluation work roll bending power and intermediate calender rolls bending roller force；
In formula (1) and formula (2),WithRespectively applied to the work roll bending power of strip steel head and intermediate roll bending
The controlled quentity controlled variable of power；CWAnd CIRespectively work roll bending power and intermediate calender rolls corner flowt coefficient；FWAnd FIRespectively work roll bending
The model specification value of roller power and intermediate calender rolls bending roller force.
Step S3 detects the coiling tension of strip steel head, when mistake or overshoot occurs in the coiling tension of strip steel head, protects
Work roll bending power and intermediate calender rolls bending roller force are held until coiling tension enters the stabilization sub stage；
Specifically, by acquiring the coiling tension of strip steel head, detecting the coiling tension of strip steel head, whether no-station pole canopy (loses
) or tension amplitude modulation fluctuation excessive (overshoot), when there is " lose and open " or " overshoot " phenomenon, continue to keep the work after compensating
Make roll bending power with the controlled quentity controlled variable of intermediate calender rolls bending roller force until coiling tension enters the stabilization sub stage, wherein, " stabilization sub stage "
It is smaller and in stable state to refer to compensated volume pressure wave amplitude.
Step S4 when coiling tension enters the stabilization sub stage and during still less than goal-selling tension, keeps intermediate calender rolls bending roller force
It is constant, the controlled quentity controlled variable of work roll bending power is corrected until coiling tension reaches goal-selling tension.
Wherein, it based on the work roll bending power after corner flowt compensating coefficient, is counted using correction factor
New work roll bending power controlled quentity controlled variable；
Formula (3) F 'WFor revised work roll bending power controlled quentity controlled variable；α is the correction factor of work roll bending power；To answer
For the work roll bending power controlled quentity controlled variable of strip steel head.
In the present embodiment, by step-by-step setting work roll bending power and the penalty coefficient of intermediate calender rolls bending roller force, meanwhile, root
Different penalty coefficients is used according to the constant interval of coiling tension so that cold-rolling mill exports best work roll bending power and centre
The controlled quentity controlled variable of roll bending power avoids strip steel head and side wave flatness defect occurs in shear stage, improves strip steel head plate shape
Quality.
Referring to Fig. 5, providing a kind of control system of cold-strip steel head strip shape quality for the present invention, exist for cold-rolling mill
The strip shape quality of strip steel head is controlled during rolled band steel, including：
Memory module M1, for storing the corner flowt coefficient of different rolling mode different steel specifications, wherein, according to
Rolled band steel steel grade, width, thickness and rolling mode determine the penalty coefficient corresponding to rolled band steel bending roller force, the roller
Power includes work roll bending power and intermediate calender rolls bending roller force, and the rolling mode includes smooth roll rolling and hair rolling system；
The strip steel grade carries out divided rank, the ranging from 200MPa of the yield strength according to raw material yield strength
~1000MPa, to be divided into a grade every 50MPa；The strip width ranging from 800mm~1300mm, with every
50mm is divided into a grade；The belt steel thickness ranging from 0.20mm~2.0mm, belt steel thickness be more than 0.6mm with every
0.1mm is divided into a grade, and belt steel thickness is less than or equal to 0.6mm to be divided into a grade, rolling mode every 0.05mm
Comprising smooth roll rolling and hair rolling system, wherein, the corner flowt coefficient is according to strip steel grade, width, thickness and rolling die
Any one or a few in formula changes and changes.Specifically, the corner flowt coefficient is according to the steel grade, width, thickness of strip
Any one or a few in degree, bending roller force and rolling mode changes, and is corresponding with different penalty coefficients.
Acquisition module M2, for obtaining the corner flowt coefficient of different rolling mode different steel specifications；
Wherein, based on plate shape mechanism model result of calculation, according to the plate shape and rolled bands in kind of live strip steel head
Steel steel grade, width, thickness and bending roller force determine initial compensation coefficient in different rolling modes；
With reference to live strip steel head material object plate shape data correction initial compensation coefficient obtain different steel grades, width, thickness,
Bending roller force penalty coefficient corresponding under different rolling modes.
Control module M3, for calculating the work roll bending power with according to different corner flowt coefficients is called
Between roll bending power controlled quentity controlled variable；
Wherein, based on the work roll bending power and the setting value of intermediate calender rolls bending roller force, using corner flowt system
Number comes evaluation work roll bending power and the controlled quentity controlled variable of intermediate calender rolls bending roller force；
In formula (1) and formula (2),WithRespectively applied to the work roll bending power of strip steel head and intermediate roll bending
The controlled quentity controlled variable of power；CWAnd CIRespectively work roll bending power and intermediate calender rolls corner flowt coefficient；FWAnd FIRespectively work roll bending
The model specification value of roller power and intermediate calender rolls bending roller force.
First execution module M4, for detecting the coiling tension of strip steel head, when the coiling tension of strip steel head loses
Or during overshoot, keep work roll bending power with intermediate calender rolls bending roller force until coiling tension enters the stabilization sub stage；
Second execution module M5 for entering the stabilization sub stage and during still less than goal-selling tension when coiling tension, is kept
Intermediate calender rolls bending roller force is constant, corrects the controlled quentity controlled variable of work roll bending power until coiling tension reaches goal-selling tension.
Wherein, it based on the work roll bending power after corner flowt compensating coefficient, is counted using correction factor
New work roll bending power controlled quentity controlled variable；
Formula (3) F 'WFor revised work roll bending power controlled quentity controlled variable；α is the correction factor of work roll bending power；To answer
For the work roll bending power controlled quentity controlled variable of strip steel head warp.
In the present embodiment, using the control system or control method of cold-strip steel head strip shape quality, with 1450mm five
For six roller tandem mills of rack, raw material yield strength 200MPa~1000MPa used by the unit, strip width range
800mm~1300mm, belt steel thickness range 0.2mm~2.0mm, corresponding divided rank are shown in Table 1.
1 strip steel grade of table and specification divided rank
| Steel grade Grade numbers | Yield strength divides | Width Grade numbers | Width divides | Level of thickness is numbered | Thickness divides |
| 1 | ≤200MPa | 1 | ≤800mm | 1 | ≤2.0mm |
| 2 | ≤250MPa | 2 | ≤850mm | 2 | ≤1.9mm |
| 3 | ≤300MPa | 3 | ≤900mm | 3 | ≤1.8mm |
| 4 | ≤350MPa | 4 | ≤950mm | 4 | ≤1.7mm |
| 5 | ≤400MPa | 5 | ≤1000mm | 5 | ≤1.6mm |
| 6 | ≤450MPa | 6 | ≤1050mm | 6 | ≤1.5mm |
| 7 | ≤500MPa | 7 | ≤1100mm | 7 | ≤1.4mm |
| 8 | ≤550MPa | 8 | ≤1150mm | 8 | ≤1.3mm |
| 9 | ≤600MPa | 9 | ≤1200mm | 9 | ≤1.2mm |
| 10 | ≤650MPa | 10 | ≤1250mm | 10 | ≤1.1mm |
| 11 | ≤700MPa | 11 | ≤1300mm | 11 | ≤1.0mm |
| 12 | ≤750MPa | 12 | ≤0.9mm | ||
| 13 | ≤800MPa | 13 | ≤0.8mm | ||
| 14 | ≤850MPa | 14 | ≤0.7mm | ||
| 15 | ≤900MPa | 15 | ≤0.6mm | ||
| 16 | ≤950MPa | 16 | ≤0.55mm | ||
| 17 | ≤1000MPa | 17 | ≤0.5mm | ||
| 18 | ≤0.45mm | ||||
| 19 | ≤0.4mm | ||||
| 20 | ≤0.35mm | ||||
| 21 | ≤0.3mm | ||||
| 22 | ≤0.25mm | ||||
| 23 | ≤0.20mm |
Rolling mode includes smooth roll rolling and hair rolling system, and bending roller force includes work roll bending power and intermediate calender rolls bending roller force,
17 × 11 × 23 × 2 × 2=can be accommodated according to being established in database of the above table in tandem mills control computer
The table of 17204 values, a corner flowt coefficient corresponding to each value.
By taking strip trimmed size 1220mm × 0.43mm as an example (its raw material specification 1235mm × 2.75mm), Yield Grade is
CQ (commercial quality business levels), corresponding raw material yield strength are 275MPa, are calculated by setting model
Work roll bending power and intermediate calender rolls bending roller force setting value are respectively 100kN and 126kN, and scene plate in kind is combined by theoretical calculation
The penalty coefficient that the analysis result of shape obtains strip steel head work roll bending power and intermediate calender rolls bending roller force is respectively 1.2 and 1.25,
So it is respectively for the work roll bending power of strip steel head and intermediate calender rolls bending roller force controlled quentity controlled variableWith
In the starting stage of corner flowt control, i.e., the first (I) stage, 1s starts to increase bending roller force before strip shearing
ExtremelyWithIt keeps being fully compensated after 4.0s coiling tension to increase from zero to caused by larger overshoot stage occurs in tension
Plate deformation.
When corner flowt control enter the stabilization sub stage, i.e., the second (II) stage, coiling tension enter the stabilization sub stage and
Coiling tension is not up to the desired value set, (that is, less than normal than the goal tension set), at this point, working roll should be reduced suitably
Roller force value, otherwise it is possible that will appear larger middle unrestrained defect.Intermediate calender rolls bending roller force keeps 158kN constant, in work roll bending
A correction factor (choosing 0.85 here) is multiplied by the basis of roller power, obtains second stage work roll bending power controlled quentity controlled variableCoiling tension starts to reach target set point after time keeps 4.7s, is provided by the invention as shown in Figure 7
A kind of shear stage strip steel head bending roller force with coiling tension variation relation figure, in the figure stage i in phase il,
Curve A, B, C represent intermediate calender rolls bending roller force, work roll bending power, coiling tension, the horizontal axis of curve A, curve B and curve C respectively
Be roller force value size for time, the longitudinal axis, intermediate calender rolls bending roller force A in stage i and phase il, no matter coiling tension C such as
What changes, and intermediate calender rolls bending roller force is always maintained at constant；Work roll bending power B occur losing in stage i, as coiling tension C or
During overshoot, work roll bending power B can be according to being always maintained at bending roller force to until batching after work roll bending force compensating compensating coefficient
Tension C enters the stabilization sub stage (i.e. phase il)；And enter phase il and still less than goal-selling when batching pressure C
During power, the controlled quentity controlled variable of work roll bending power B is corrected until coiling tension C reaches goal-selling tension.
After above two benches corner flowt control, strip steel head obtains stable and straight strip shape quality,
It refers to shown in attached drawing 6, has prevented side wave flatness defect occur in shear stage, improved strip steel head strip shape quality.
In conclusion the present invention according to different rolling mode different steel specifications by rolled band steel, setting different
Corner flowt coefficient, the control of the work roll bending power and intermediate calender rolls bending roller force is determined by corner flowt coefficient
Amount, according to the coiling tension status (mistake, overshoot, stabilization) of detection strip steel head, it is determined whether adjust work roll bending
Power and the controlled quentity controlled variable of intermediate calender rolls bending roller force, so as to control strip steel head strip shape quality.Strip steel head is effectively eliminated in shearing rank
There is side wave flatness defect in section, improves strip steel head strip shape quality, and improve strip lumber recovery on the whole, reduces
Belt steel rolling cost.So industry exploitation value of the invention for effectively overcoming various shortcoming of the prior art and there is height
Value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of control method of cold-strip steel head strip shape quality controls strip steel head in rolled band steel for cold-rolling mill
Strip shape quality, which is characterized in that including：
It obtains the corner flowt coefficient of different rolling mode different steel specifications and stores；Wherein, according to rolled band steel steel grade,
Width, thickness and rolling mode, determine the penalty coefficient corresponding to rolled band steel bending roller force, and the bending roller force includes work roll bending
Roller power and intermediate calender rolls bending roller force, the rolling mode include smooth roll rolling and hair rolling system；
The controlled quentity controlled variable of the work roll bending power and intermediate calender rolls bending roller force is controlled according to different corner flowt coefficients is called；
The coiling tension of strip steel head is detected, when mistake or overshoot occurs in the coiling tension of strip steel head, keeps work roll bending
Roller power is with intermediate calender rolls bending roller force until coiling tension enters the stabilization sub stage；
When coiling tension enters the stabilization sub stage and during still less than goal-selling tension, keep intermediate calender rolls bending roller force constant, correct work
Make the controlled quentity controlled variable of roll bending power until coiling tension reaches goal-selling tension.
2. the control method of cold-strip steel head according to claim 1 strip shape quality, which is characterized in that the basis is rolled
Strip steel grade processed, width, thickness and rolling mode specifically include：
The strip steel grade carries out grade classification according to raw material yield strength, and the ranging from 200MPa of the yield strength~
1000MPa, to be divided into a grade every 50MPa；The strip width ranging from 800mm~1300mm, with every 50mm
It is divided into a grade；The belt steel thickness ranging from 0.20mm~2.0mm, belt steel thickness are more than 0.6mm to be drawn every 0.1mm
It is divided into a grade, belt steel thickness is less than or equal to 0.6mm to be divided into a grade every 0.05mm, and rolling mode includes smooth roll
Rolling and hair rolling system, wherein, the corner flowt coefficient is according to arbitrary in strip steel grade, width, thickness and rolling mode
One or more change and change.
3. the control method of cold-strip steel head according to claim 1 strip shape quality, which is characterized in that the basis is rolled
Strip steel grade processed, width and thickness determine strip penalty coefficient corresponding under different bending roller forces and different rolling modes
Step specifically includes：
Based on plate shape mechanism model result of calculation, according to the plate shape in kind of live strip steel head and rolled band steel steel grade, width
Degree, thickness and bending roller force determine initial compensation coefficient in different rolling modes；
Different steel grades, width, thickness, roller are obtained with reference to the data correction initial compensation coefficient of live strip steel head material object plate shape
Power penalty coefficient corresponding under different rolling modes.
4. the control method of cold-strip steel head according to claim 1 strip shape quality, which is characterized in that described according to tune
The step of work roll bending power and the controlled quentity controlled variable of intermediate calender rolls bending roller force being controlled with different corner flowt coefficients, it is specific to wrap
It includes：
Based on the work roll bending power and the setting value of intermediate calender rolls bending roller force, work is calculated using corner flowt coefficient
Make the controlled quentity controlled variable of roll bending power and intermediate calender rolls bending roller force；
In formula (1) and formula (2),WithRespectively applied to the work roll bending power of strip steel head and intermediate calender rolls bending roller forces
Controlled quentity controlled variable；CWAnd CIRespectively work roll bending power and intermediate calender rolls corner flowt coefficient；FWAnd FIRespectively work roll bending power
With the model specification value of intermediate calender rolls bending roller force.
5. the control method of cold-strip steel head according to claim 1 strip shape quality, which is characterized in that the amendment work
Make the step of controlled quentity controlled variable of roll bending power is until coiling tension reaches goal-selling tension, specifically include：
Based on the work roll bending power after corner flowt compensating coefficient, new work is calculated using correction factor
Roll bending power controlled quentity controlled variable；
F ' in formula (3)WFor revised work roll bending power controlled quentity controlled variable；α is the correction factor of work roll bending power；For application
In the work roll bending power controlled quentity controlled variable of strip steel head.
6. a kind of control system of cold-strip steel head strip shape quality controls strip steel head in rolled band steel for cold-rolling mill
Strip shape quality, which is characterized in that including
Memory module, for storing the corner flowt coefficient of different rolling mode different steel specifications, wherein, according to rolled bands
Steel steel grade, width, thickness and rolling mode, determine the penalty coefficient corresponding to rolled band steel bending roller force, and the bending roller force includes
Work roll bending power and intermediate calender rolls bending roller force, the rolling mode include smooth roll rolling and hair rolling system；
Acquisition module, for obtaining the corner flowt coefficient of different rolling mode different steel specifications；
Control module, for controlling the work roll bending power and intermediate roll bending according to different corner flowt coefficients is called
The controlled quentity controlled variable of roller power；
First execution module for detecting the coiling tension of strip steel head, is opened or is surpassed when losing occurs in the coiling tension of strip steel head
Timing keeps work roll bending power with intermediate calender rolls bending roller force until coiling tension enters the stabilization sub stage；
Second execution module for entering the stabilization sub stage and during still less than goal-selling tension when coiling tension, keeps intermediate calender rolls
Bending roller force is constant, corrects the controlled quentity controlled variable of work roll bending power until coiling tension reaches goal-selling tension.
7. the control system of cold-strip steel head according to claim 6 strip shape quality, which is characterized in that the basis is rolled
Strip steel grade processed, width and thickness specifically include：
The strip steel grade carries out grade classification according to raw material yield strength, and the ranging from 200MPa of the yield strength~
1000MPa, to be divided into a grade every 50MPa；The strip width ranging from 800mm~1300mm, with every 50mm
It is divided into a grade；The belt steel thickness ranging from 0.20mm~2.0mm, belt steel thickness are more than 0.6mm to be drawn every 0.1mm
It is divided into a grade, belt steel thickness is less than or equal to 0.6mm to be divided into a grade every 0.05mm, and rolling mode includes smooth roll
Rolling and hair rolling system, wherein, the corner flowt coefficient is according to arbitrary in strip steel grade, width, thickness and rolling mode
One or more change and change.
8. the control system of cold-strip steel head according to claim 6 strip shape quality, which is characterized in that the storage mould
Block specifically includes：
Based on plate shape mechanism model result of calculation, according to the plate shape in kind of live strip steel head and rolled band steel steel grade, width
Degree, thickness and bending roller force determine initial compensation coefficient in different rolling modes；
Different steel grades, width, thickness, roller are obtained with reference to the data correction initial compensation coefficient of live strip steel head material object plate shape
Power penalty coefficient corresponding under different rolling modes.
9. the control system of cold-strip steel head according to claim 6 strip shape quality, which is characterized in that the control mould
Block specifically includes：
Based on the work roll bending power and the setting value of intermediate calender rolls bending roller force, work is calculated using corner flowt coefficient
Make the controlled quentity controlled variable of roll bending power and intermediate calender rolls bending roller force；
In formula (1) and formula (2),WithRespectively applied to the work roll bending power of strip steel head and intermediate calender rolls bending roller forces
Controlled quentity controlled variable；CWAnd CIRespectively work roll bending power and intermediate calender rolls corner flowt coefficient；FWAnd FIRespectively work roll bending power
With the model specification value of intermediate calender rolls bending roller force.
10. the control system of cold-strip steel head according to claim 6 strip shape quality, which is characterized in that the amendment
It the step of controlled quentity controlled variable of work roll bending power is until coiling tension reaches goal-selling tension, specifically includes：
Based on the work roll bending power after corner flowt compensating coefficient, new work is calculated using correction factor
Roll bending power controlled quentity controlled variable；
F ' in formula (3)WFor revised work roll bending power controlled quentity controlled variable；α is the correction factor of work roll bending power；For application
In the work roll bending power controlled quentity controlled variable of strip steel head.
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| CN107377633B (en) * | 2017-07-07 | 2019-09-20 | 首钢京唐钢铁联合有限责任公司 | A kind of hot rolling tin plate twill defects controlling and monitoring method |
| CN111215454B (en) * | 2018-11-26 | 2021-07-16 | 宝山钢铁股份有限公司 | Method for controlling flat plate shape of hot-rolled strip steel |
| CN110125190B (en) * | 2019-05-24 | 2021-04-23 | 首钢京唐钢铁联合有限责任公司 | Method and device for preventing edge crack of strip steel in rolling |
| CN111250551B (en) * | 2020-01-15 | 2022-03-18 | 首钢京唐钢铁联合有限责任公司 | Method and system for controlling bending force of finishing machine |
| 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 |
| CN112974546A (en) * | 2021-03-05 | 2021-06-18 | 北京首钢自动化信息技术有限公司 | Control method for automatically adjusting roll bending force through welding line of finishing machine |
| CN114101340B (en) * | 2021-12-01 | 2022-07-29 | 燕山大学 | Method for compensating transverse moving position error of roller |
| CN114367543A (en) * | 2021-12-13 | 2022-04-19 | 首钢京唐钢铁联合有限责任公司 | Control method, device and equipment for flat rolling of strip steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543842A (en) * | 2008-03-24 | 2009-09-30 | 宝钢新日铁汽车板有限公司 | Control method for cold rolling mill for improving surface quality of strip steel |
| CN102581035A (en) * | 2012-01-30 | 2012-07-18 | 中冶南方工程技术有限公司 | Feed-forward control system for cold-rolled steel strip shape |
| CN102688897A (en) * | 2011-03-22 | 2012-09-26 | 宝山钢铁股份有限公司 | Control method of edge portion strip shape of cold rolling strip steel |
| CN102688898A (en) * | 2011-03-22 | 2012-09-26 | 宝山钢铁股份有限公司 | Control method for strip shape in rolling of cold-rolling strip steel by two-stand temper mill |
| JP6012137B2 (en) * | 2010-09-30 | 2016-10-25 | 小林製薬株式会社 | Bone density increasing agent and anti-menopausal agent |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6012137B2 (en) * | 1979-06-29 | 1985-03-30 | 新日本製鐵株式会社 | Plate crown control device in rolling mill |
-
2016
- 2016-09-27 CN CN201610854163.5A patent/CN106180210B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543842A (en) * | 2008-03-24 | 2009-09-30 | 宝钢新日铁汽车板有限公司 | Control method for cold rolling mill for improving surface quality of strip steel |
| JP6012137B2 (en) * | 2010-09-30 | 2016-10-25 | 小林製薬株式会社 | Bone density increasing agent and anti-menopausal agent |
| CN102688897A (en) * | 2011-03-22 | 2012-09-26 | 宝山钢铁股份有限公司 | Control method of edge portion strip shape of cold rolling strip steel |
| CN102688898A (en) * | 2011-03-22 | 2012-09-26 | 宝山钢铁股份有限公司 | Control method for strip shape in rolling of cold-rolling strip steel by two-stand temper mill |
| CN102581035A (en) * | 2012-01-30 | 2012-07-18 | 中冶南方工程技术有限公司 | Feed-forward control system for cold-rolled steel strip shape |
Non-Patent Citations (1)
| Title |
|---|
| 六辊冷轧机板形控制模型优化的研究;梁勋国;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;20120615(第06期);全文 * |
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