CN108080423B - A kind of real-time intelligent rolling mill for obtaining loading roll gap information - Google Patents
A kind of real-time intelligent rolling mill for obtaining loading roll gap information Download PDFInfo
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- CN108080423B CN108080423B CN201711428879.XA CN201711428879A CN108080423B CN 108080423 B CN108080423 B CN 108080423B CN 201711428879 A CN201711428879 A CN 201711428879A CN 108080423 B CN108080423 B CN 108080423B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
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Abstract
The invention discloses a kind of intelligent rolling mills for obtaining loading roll gap information in real time, one group of displacement sensor is respectively arranged before and after the working roll of four-roller or six roller strip-mill strips, direct measurement result is calculated by relevant calculation model, amount of deflection, unit width draught pressure and abrasion and the roll thermal crown of working roll vertical direction can be acquired, in conjunction with the flattening amount model of the working roll contacted with band, and then can computational load roll gap pattern curve, i.e., outlet plate thickness distribution.For conventional mill, approximating assumption of the direct measurement result instead of this part in Traditional calculating methods is obtained by cloth displacement sensor, does not have to especially be iterated calculating, reduces cumulative errors, precision improves, and enters roll gap moment you can learn that roll gap information in rolled piece.
Description
Technical field
The present invention relates to automatic measurement fields, more particularly to a kind of intelligent rolling mill for obtaining loading roll gap information in real time.
Background technique
The high-precision gage and shape control of steel plate and process control are always the control target of strip-mill strip production process, and
The parameter information of loading roll gap directly affects rolling machine system stability and product quality.In general, strip-mill strip is given birth in rolling
When production, working roller bending, working roller abrasion and roll thermal crown and loading roll gap be not easy it is measured directly, so being usually taken
The mode of theoretical calculation obtains above-mentioned related data.Want the numerical value of computational load roll gap, it is necessary to while analyzing the bullet of entire roller system
Property deformation and roll gap in metal plastic deformation, generally use conventional segmentation model influence coefficient method at present, but use this side
Method needs to carry out first it is assumed that especially needing flow of metal model and roller system in roll gap because lacking one group of known quantity
The mutual iteration couple solution of distorted pattern, cumulative errors are larger, exist simultaneously time lag.
Therefore, the present invention provides a kind of intelligent rolling mill for obtaining loading roll gap information in real time, accurate to obtain computational load roller
The parameter information of seam is established using the information that gets parms in real time as the rolls' deformation model of known conditions, determines actual measurement parameter information
With the corresponding relationship between loading roll gap information, to gage and shape control strategy is formulated, obtaining high precision plate strip product has weight
Want meaning.
Summary of the invention
The purpose of the present invention is to provide a kind of intelligent rolling mill for obtaining loading roll gap information in real time, milling train configuration displacements
Sensor enters roll gap moment you can learn that roll gap information in rolled piece.
The technical solution adopted by the present invention to solve the technical problems is:
The present invention provides a kind of intelligent rolling mill for obtaining loading roll gap information in real time, in a work to be detected of strip-mill strip
The entrance side and outlet side for making roller are respectively arranged one group of displacement sensor, and every group of displacement sensor includes multiple displacement sensors,
It is uniformly distributed each other between multiple displacement sensors and aligned, the arrangement total length of every group of displacement sensor and the work
The barrel length for making roller is identical, and the axial line distance between multiple displacement sensors and working roll is equal, and the displacement sensing
The axial direction of device all perpendicular to zero load when the working roll axis direction, the detection direction of every group of displacement sensor is logical
The axis of working roll when crossing zero load, the detection direction of every group of displacement sensor and the angle of horizontal plane are 40 °~60 °, two
The angle difference for the angle that the detection direction and horizontal plane of group displacement sensor are constituted is 3 °~10 °；Institute's displacement sensors are used
In measurement from institute's displacement sensors to the distance value of the work roll surface, by the distance value of measurement and in conjunction with computation model
The working roll amount of deflection, unit width draught pressure and abrasion vertically and roll thermal crown are obtained, is connect in conjunction with band
The flattening amount model of the working roll of touching, obtains the pattern curve of loading roll gap；The specific calculating that the computation model includes
Step are as follows:
Step (1): the quantity of known every group of displacement sensor, the distance between two neighboring institute's displacement sensors
And the initial diameter of the working roll is rolled using the location information and measurement result of two groups of displacement sensors
Abrasion and the roll thermal crown of amount of deflection and the working roll when Shi Suoshu works roll axis relative to milling train zero load；
Step (2): backing roll, intermediate calender rolls and the working roll axis deformation expression formula are established, elastic flattening between roller is established
Expression formula establishes compatibility of deformation expression formula between roller, obtains unit width draught pressure；
Step (3): according to the flattening of the working roll contacted with band influence coefficient, unit width draught pressure, adjacent two
The distance between a high accuracy displacement sensor obtains the flattening amount of the working roll contacted with band；
Step (4): according to working roll when unloaded roll gap constant, the flattening amount of the working roll contacted with the band, rolling
Amount of deflection and working roller abrasion and roll thermal crown when axis is relative to milling train zero load, obtain the pattern curve of loading roll gap.
Preferably, the strip-mill strip is four-high mill or six-high cluster mill.
Preferably, the specific steps of the step (1) are as follows:
Following computation model is used using the location information and measurement result of two groups of displacement sensors:
Wherein, m is every group of displacement sensor quantity, DwFor working roll initial diameter；ΔRwIt is convex for working roller abrasion and heat
Degree；fwAmount of deflection when for the roll axis that works when rolling relative to milling train zero load；L1Work is detected for inlet of rolling mill side displacement sensor
Distance of the measuring point to unloaded AnchorPoint on the circular section of roller；L2The circular section of working roll is detected for milling train outlet side displacement sensor
Distance of the upper measuring point to unloaded AnchorPoint；α is the angle of inlet of rolling mill side displacement sensor detection direction and vertical direction；β is
The angle of milling train outlet side displacement sensor detection direction and vertical direction；da0Inlet of rolling mill side displacement sensing when for milling train zero load
The detected value of device；da1The detected value of inlet of rolling mill side displacement sensor when to roll；db0Milling train outlet side position when for milling train zero load
The detected value of displacement sensor；db1The detected value of milling train outlet side displacement sensor when to roll；
The above-mentioned expression formula of simultaneous (1)-(4), four expression formula simultaneous solve fwWith Δ Rw, rolling when institute can be obtained
State abrasion and the roll thermal crown of amount of deflection and the working roll of the work roll axis relative to milling train zero load when；
Preferably, when milling train is six-high cluster mill, which is characterized in that the specific steps of step (2) are as follows:
Establish backing roll, intermediate calender rolls and working roll axis deformation expression formula
fbi=f (qmbi) (i=1,2 ..., m) (5)
fmi=f (qwmi,qmbi) (i=1,2 ..., m) (6)
fwi=f (pli,qwmi) (i=1,2 ..., m) (7)
Wherein, fbAmount of deflection when for support roll axis relative to milling train zero load, fmIt is intermediate roll axis relative to milling train zero load
When amount of deflection, qmbPressure is distributed between intermediate calender rolls and backing roll, qwmPressure is distributed between working roll and intermediate calender rolls, plFor list
Bit width draught pressure；
Establish elastic flattening expression formula between roller
Δmbi=f (qmbi) (i=1,2 ..., m) (8)
Δwmi=f (qwmi) (i=1,2 ..., m) (9)
Wherein, ΔmbThe elastic flattening amount between intermediate calender rolls and backing roll, ΔwmThe elasticity pressure between working roll and intermediate calender rolls
Flat amount.
Establish compatibility of deformation expression formula between roller
fmi=f (fbi,Δmbi) (i=1,2 ..., m) (10)
fwi=f (fmi,Δwmi) (i=1,2 ..., m) (11)
Totally seven expression formulas, seven expression formulas can solve seven unknown quantity f for the above-mentioned expression formula of simultaneous (5)-(11)b、
fm、qmb、qwm、pl、ΔmbAnd Δwm, unit width draught pressure p can be solvedl。
Preferably, when milling train is four-high mill, the specific steps of step (2) are as follows:
Establish backing roll and working roll axis deformation expression formula
fbi=f (qi) (i=1,2 ..., m) (14)
fwi=f (pli,qi) (i=1,2 ..., m) (15)
Wherein, fbAmount of deflection when for support roll axis relative to milling train zero load, q is roll force distribution, plFor unit width
Draught pressure；
Establish elastic flattening expression formula between roller
Δwbi=f (qi) (i=1,2 ..., m) (16)
Wherein, ΔwbThe elastic flattening amount between roller.
Establish working roll and support roller axis deformation coordinated expression formula
fbi=f (fwi,Δwbi) (i=1,2 ..., m) (17)
Simultaneous expression formula (14)-(17), four expression formulas can solve four unknown quantity fb、q、plAnd Δwb, Ji Keqiu
Solve unit width draught pressure pl。
Preferably, the specific steps of the step (3) are as follows:
Wherein, ΔwsFlattening amount for the working roll contacted with band；αwsFlattening shadow for the working roll contacted with band
Ring coefficient, plFor unit width draught pressure, Δ y is two neighboring displacement sensor distance；
Preferably, the specific steps of the step (4) are as follows:
h1i=s0+2fwi+2Δwsi+2ΔRwi(i=1,2 ..., m) (13)
Wherein, h1For loading roll gap；s0For unloaded roll gap constant；ΔwsFlattening amount for the working roll contacted with band；fw
Amount of deflection when for the roll axis that works when rolling relative to milling train zero load；ΔRwFor working roller abrasion and roll thermal crown.
Preferably, the working roll to be detected is top working roll.
Preferably, institute's displacement sensors are ultrasonic sensor, infrared sensor or laser sensor；The displacement
The range of sensor is greater than 20mm, and measurement accuracy is less than 100nm, and repeatable accuracy is less than 50nm.
The beneficial effects of the present invention are:
1, a kind of intelligent rolling mill for obtaining loading roll gap information in real time will directly measure knot by configuring displacement sensor
Fruit is calculated by computation model, and amount of deflection, unit width draught pressure and abrasion and the heat that can acquire working roll vertical direction are convex
Degree, in conjunction with the flattening amount model of the working roll contacted with band, and then can computational load roll gap pattern curve, i.e., outlet plate thickness
Distribution.
2, Traditional calculating methods are compared, reduce intermediate computations link, direct measurement result is instead of this part in tradition
Approximating assumption in calculating, especially do not have to be iterated calculatings, reduce cumulative errors, computational accuracy raising, rolled piece into
Enter roll gap moment you can learn that roll gap information.
Detailed description of the invention
Fig. 1 is the first and second displacement sensor group position axial direction schematic diagrames；
Fig. 2 is the first displacement sensor group position transverse direction schematic diagram；
Fig. 3 is that geometrical relationship changes schematic diagram between working roll and displacement sensor group when roll gap changes；
Fig. 4 be the work roll axis that is calculated of a certain moment relative to milling train zero load when amount of deflection；
Fig. 5 is the loading roll gap pattern curve being calculated at a certain moment.
Main appended drawing reference:
First displacement sensor group 1；
Second displacement sensor group 2；
Top working roll 3；
Roll line 4.
Specific implementation method
The present invention will be further described with reference to the accompanying drawing.
Specific embodiment one:
As depicted in figs. 1 and 2, the present invention provides a kind of intelligent rolling mill for obtaining loading roll gap information in real time, existing six
On the basis of roller mill, one group of displacement sensor is respectively arranged before and after top working roll respectively along with work roll axis parallel direction, i.e.,
First displacement sensor group 1 of inlet of rolling mill side and the second displacement sensor group 2 of milling train outlet side.Every group of displacement sensor by
Multiple displacement sensor compositions, displacement sensor uses ultrasonic sensor in the present embodiment.Multiple institute's displacement sensors
Between be uniformly distributed each other and aligned, the body of roll of the arrangement total length and the working roll of every group of displacement sensor
Length is identical, and each institute's displacement sensors are equal with the axial line distance of working roll, and the axial direction side of institute's displacement sensors
To all perpendicular to zero load when the working roll axis direction, top working roll axis when displacement sensor detection direction passes through zero load
Line, the angle that the plane that 1 detection direction of the first displacement sensor group is constituted with 3 axis of top working roll is constituted with horizontal plane are
50 °, the angle that the plane that 2 detection direction of second displacement sensor group is constituted with 3 axis of top working roll is constituted with horizontal plane is
45°；3 barrel length of operation roll of mill is 1720mm, diameter 400mm, displacement sensor every group 25 and is uniformly distributed, two
Adjacent displacement sensor spacing is 70mm；Displacement sensor measurement range is 30mm, measurement accuracy 100nm, repeatable accuracy 50nm.
Each displacement sensor is used to measure in institute's displacement sensors detection direction 3 table from institute displacement sensors to top working roll
The distance in face.When milling train load and zero load, the position of displacement sensor is identical with detection direction and immobilizes, but due to rolling
The detected value of top working roll vertical deflection when machine loads, displacement sensor generates variation.As it is known by the man skilled in the art that in addition to
Outside ultrasonic sensor used in the present embodiment, displacement sensor can also use infrared sensor, laser sensor etc.
Other sensors；As long as range >=20mm of displacement sensor, measurement accuracy≤100nm, repeatable accuracy≤50nm, and can be
Long-term stable operation under field working conditions.
It is mounted with the intelligent rolling mill of displacement sensor, obtains the method for loading roll gap information in real time are as follows: by displacement sensor
Measured value combination computation model, acquire amount of deflection, unit width draught pressure and the abrasion and heat of top working roll vertical direction
Convexity, in conjunction with the flattening amount model of the top working roll contacted with band, and then can computational load roll gap pattern curve, that is, export
Plate thickness distribution.The computation model specifically includes following steps:
Step (1): known every group of displacement sensor quantity, the distance of two neighboring displacement sensor, working roll are initially straight
It is unloaded relative to milling train to obtain work roll axis when rolling using the location information and measurement result of two groups of displacement sensors for diameter
When amount of deflection and working roll abrasion and roll thermal crown；
Step (2): establishing backing roll, intermediate calender rolls and working roll axis deformation expression formula, and elastic flattening is expressed between establishing roller
Formula establishes compatibility of deformation expression formula between roller, obtains unit width draught pressure；
Step (3): according to the flattening of the working roll contacted with band influence coefficient, unit width draught pressure, adjacent two
A high accuracy displacement sensor distance obtains the flattening amount of the working roll contacted with band；
Step (4): according to unloaded roll gap；The flattening amount of the working roll contacted with band；The roll axis that works when rolling is opposite
Amount of deflection when milling train zero load；And working roller abrasion and roll thermal crown, obtain the pattern curve of loading roll gap.
For the six-high cluster mill in the present embodiment, the specific algorithm of computation model is as follows:
(1): every group of displacement sensor quantity is m, and two neighboring displacement sensor distance is Δ y, as shown in figure 3, utilizing
The location information and testing result of two groups of displacement sensors use following computation model:
Wherein, DwFor working roll initial diameter；ΔRwFor working roller abrasion and roll thermal crown；fwFor the roll axis that works when rolling
Amount of deflection (vertical displacement) when relative to milling train zero load；L1On the circular section for detecting working roll for inlet of rolling mill side displacement sensor
Distance of the measuring point to unloaded AnchorPoint；L2For measuring point on the circular section of milling train outlet side displacement sensor detection working roll to zero load
The distance of AnchorPoint；α is the angle of inlet of rolling mill side displacement sensor detection direction and vertical direction；β is milling train outlet side position
The angle of displacement sensor detection direction and vertical direction；da0The detected value of inlet of rolling mill side displacement sensor when for milling train zero load；
da1The detected value of inlet of rolling mill side displacement sensor when to roll；db0Milling train outlet side displacement sensor when for milling train zero load
Detected value；db1The detected value of milling train outlet side displacement sensor when to roll.
Four expression formula simultaneous of above-mentioned expression formula (1)-(4), can solve fwWith Δ Rw, work when can calculate rolling
Amount of deflection (vertical displacement) and the abrasion of working roll and roll thermal crown when roll axis is relative to milling train zero load.
(2) unit of account width Rolling Pressure Calculation model are as follows:
Establish backing roll, intermediate calender rolls and working roll axis deformation expression formula
fbi=f (qmbi) (i=1,2 ..., m) (5)
fmi=f (qwmi,qmbi) (i=1,2 ..., m) (6)
fwi=f (pli,qwmi) (i=1,2 ..., m) (7)
Wherein, fbAmount of deflection (vertical displacement) when for support roll axis relative to milling train zero load, fmIt is opposite for intermediate roll axis
Amount of deflection (vertical displacement) when milling train zero load, qmbPressure is distributed between intermediate calender rolls and backing roll, qwmFor working roll and centre
Pressure is distributed between roller, plFor unit width draught pressure.
Establish elastic flattening expression formula between roller
Δmbi=f (qmbi) (i=1,2 ..., m) (8)
Δwmi=f (qwmi) (i=1,2 ..., m) (9)
Wherein, ΔmbThe elastic flattening amount between intermediate calender rolls and backing roll, ΔwmThe elasticity pressure between working roll and intermediate calender rolls
Flat amount.
Establish compatibility of deformation expression formula between roller
fmi=f (fbi,Δmbi) (i=1,2 ..., m) (10)
fwi=f (fmi,Δwmi) (i=1,2 ..., m) (11)
The above-mentioned expression formula of simultaneous (5)-(11), seven expression formulas can solve seven unknown quantitys, fb、fm、qmb、qwm、pl、Δmb
And Δwm, unit width draught pressure p can be solvedl。
(3) the flattening amount model of the working roll contacted with band are as follows:
Wherein, ΔwsFlattening amount for the working roll contacted with band；αwsFlattening shadow for the working roll contacted with band
Ring coefficient, plFor unit width draught pressure, Δ y is two neighboring displacement sensor distance.
(4) pattern curve of loading roll gap, i.e. outlet plate thickness distributed computing model are as follows:
h1i=s0+2fwi+2Δwsi+2ΔRwi(i=1,2 ..., m) (13)
Wherein, h1For loading roll gap (outlet plate thickness distribution)；s0For unloaded roll gap constant, fwFor the roll axis that works when rolling
Amount of deflection (vertical displacement) when relative to milling train zero load, ΔwsFlattening amount for the working roll contacted with band, Δ RwFor working roll
Abrasion and roll thermal crown.
Specific embodiment two:
If the present invention is used for four-high mill, the algorithm and six rollings of the step (1), (3) and (4) in computation model
Machine is identical, and step (2) uses following algorithm:
(2) four-high mill unit of account width Rolling Pressure Calculation model are as follows:
Establish backing roll and working roll axis deformation expression formula
fbi=f (qi) (i=1,2 ..., m) (14)
fwi=f (pli,qi) (i=1,2 ..., m) (15)
Wherein, fbAmount of deflection when for support roll axis relative to milling train zero load, q is roll force distribution, plFor unit width
Draught pressure.
Establish elastic flattening expression formula between roller
Δwbi=f (qi) (i=1,2 ..., m) (16)
Wherein, ΔwbThe elastic flattening amount between roller.
Establish working roll and support roller axis deformation coordinated expression formula
fbi=f (fwi,Δwbi) (i=1,2 ..., m) (17)
Simultaneous expression formula (14)-(17), aforementioned four expression formula can solve four unknown quantity fb、q、plAnd Δwb, Ji Keqiu
Solve unit width draught pressure pl。
In practical applications by taking four-high mill as an example, which is 380mm, and working roll barrel length is
900mm, bearing roller diameter are 800mm, and backing roll barrel length is 900mm.Rolled products width is 500mm, and unloaded roll gap is
2.5mm.When Rolling Production, at a time, measurement value sensor is calculated by mathematical model, and obtained work roll axis is opposite
Amount of deflection (vertical displacement) f when milling train zero loadwAs shown in Figure 4；The pattern curve of loading roll gap is calculated, i.e. outlet plate thickness
It is distributed h1, as shown in Figure 5.
If field working conditions condition has, one group of displacement sensing can also be respectively arranged before and after strip-mill strip bottom working roll
Device realizes the present invention, only need to top working roll involved in the embodiment of the present application one and two be replaced with bottom working roll,
There is no any difficulty for those skilled in the art.
The present invention is calculated by configuring displacement sensor, by direct measurement result by computation model, and working roll can be acquired
Amount of deflection, unit width draught pressure and the abrasion of vertical direction and roll thermal crown, in conjunction with the flattening of the working roll contacted with band
Measure model, and then can computational load roll gap pattern curve, i.e., outlet plate thickness distribution.Compared to Traditional calculating methods, reduce
Between calculate link, approximating assumption of the direct measurement result instead of this part in traditional calculations does not have to especially be iterated
It calculates, reduces cumulative errors, computational accuracy improves, and enters roll gap moment you can learn that roll gap information in rolled piece.By testing,
Using conventional method, metal pattern and roller system model the number of iterations are related with convergence error, and typically at least 50 times or more, when calculating
Between it is very long, for metal pattern to accurate, metal pattern needs 1 minute or more every time, roller system model 0.05 second or so, causes in this way
Conventional method at least needs 50 minutes or more, and the application only needs 0.05 second, and difference of them is very big, especially in conventional method
It iterates to calculate unstable, dissipates sometimes, error will be bigger, make error controllable using the application.
The above is the preferred embodiment of the application, it is noted that for those skilled in the art
For, under the premise of not departing from this technology principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as
The protection scope of the application.
Claims (9)
1. a kind of intelligent rolling mill for obtaining loading roll gap information in real time, it is characterised in that: in a work to be detected of strip-mill strip
The entrance side and outlet side for making roller are respectively arranged one group of displacement sensor, and every group of displacement sensor includes multiple displacement sensors,
It is uniformly distributed each other between multiple displacement sensors and aligned, the arrangement total length of every group of displacement sensor and the work
The barrel length for making roller is identical, and the axial line distance between multiple displacement sensors and working roll is equal, and the displacement sensing
The axial direction of device all perpendicular to zero load when the working roll axis direction, the detection direction of every group of displacement sensor is logical
The axis of working roll when crossing zero load, the detection direction of every group of displacement sensor and the angle of horizontal plane are 40 °~60 °, two
The angle difference for the angle that the detection direction and horizontal plane of group displacement sensor are constituted is 3 °~10 °；Institute's displacement sensors are used
In measurement from institute's displacement sensors to the distance value of the work roll surface, by the distance value of measurement and in conjunction with computation model
The working roll amount of deflection, unit width draught pressure and abrasion vertically and roll thermal crown are obtained, is connect in conjunction with band
The flattening amount model of the working roll of touching, obtains the pattern curve of loading roll gap；The specific calculating that the computation model includes
Step are as follows:
Step (1): the quantity of known every group of displacement sensor, the distance between two neighboring institute's displacement sensors and
The initial diameter of the working roll obtains rolling when institute using the location information and measurement result of two groups of displacement sensors
State abrasion and the roll thermal crown of amount of deflection and the working roll of the work roll axis relative to milling train zero load when；
Step (2): establishing backing roll, intermediate calender rolls and the working roll axis deformation expression formula, and elastic flattening is expressed between establishing roller
Formula establishes compatibility of deformation expression formula between roller, obtains unit width draught pressure；
Step (3): coefficient, unit width draught pressure, two neighboring height are influenced according to the flattening of the working roll contacted with band
The distance between Accuracy Displacement sensor obtains the flattening amount of the working roll contacted with band；
Step (4): work roll axis when according to unloaded roll gap constant, the flattening amount of the working roll contacted with the band, rolling
Amount of deflection and working roller abrasion and roll thermal crown when relative to milling train zero load, obtain the pattern curve of loading roll gap.
2. the real-time intelligent rolling mill for obtaining loading roll gap information according to claim 1, it is characterised in that: the strip is rolled
Machine is four-high mill or six-high cluster mill.
3. the real-time intelligent rolling mill for obtaining loading roll gap information according to claim 1, which is characterized in that the step
(1) specific steps are as follows:
It is calculated using the location information and measurement result of two groups of displacement sensors using following computation model:
Expression formula 1:
Expression formula 2:
Expression formula 3:
Expression formula 4:
Wherein, m is the quantity of every group of displacement sensor, DwFor working roll initial diameter；ΔRwFor working roller abrasion and roll thermal crown；
fwAmount of deflection when for the roll axis that works when rolling relative to milling train zero load；L1Working roll is detected for inlet of rolling mill side displacement sensor
Circular section on measuring point to unloaded AnchorPoint distance；L2On the circular section for detecting working roll for milling train outlet side displacement sensor
Distance of the measuring point to unloaded AnchorPoint；α is the angle of inlet of rolling mill side displacement sensor detection direction and vertical direction；β is to roll
The angle of machine outlet side displacement sensor detection direction and vertical direction；da0Inlet of rolling mill side displacement sensor when for milling train zero load
Detected value；da1The detected value of inlet of rolling mill side displacement sensor when to roll；db0Milling train outlet side is displaced when for milling train zero load
The detected value of sensor；db1The detected value of milling train outlet side displacement sensor when to roll；
The above-mentioned expression formula 1- expression formula 4 of simultaneous, four expression formula simultaneous solve fwWith Δ Rw, work when rolling can be obtained
Abrasion and the roll thermal crown of amount of deflection and the working roll when roll axis is relative to milling train zero load.
4. the real-time intelligent rolling mill for obtaining loading roll gap information according to claim 2, which is characterized in that when milling train is six
When roller mill, the specific steps of step (2) are as follows:
It establishes backing roll, intermediate calender rolls and work roll axis and deforms expression formula as follows:
Expression formula 5:fbi=f (qmbi) (i=1,2 ..., m)；
Expression formula 6:fmi=f (qwmi,qmbi) (i=1,2 ..., m)；
Expression formula 7:fwi=f (pli,qwmi) (i=1,2 ..., m)；
Wherein, fbAmount of deflection when for support roll axis relative to milling train zero load, fmWhen for intermediate roll axis relative to milling train zero load
Amount of deflection, qmbPressure is distributed between intermediate calender rolls and backing roll, qwmPressure is distributed between working roll and intermediate calender rolls, plIt is wide for unit
Spend draught pressure；
Establish elastic flattening following expression between roller:
Expression formula 8: Δmbi=f (qmbi) (i=1,2 ..., m)；
Expression formula 9: Δwmi=f (qwmi) (i=1,2 ..., m)；
Wherein, ΔmbThe elastic flattening amount between intermediate calender rolls and backing roll, ΔwmThe elastic flattening amount between working roll and intermediate calender rolls；
Establish compatibility of deformation following expression between roller:
Expression formula 10:fmi=f (fbi,Δmbi) (i=1,2 ..., m)；
Expression formula 11:fwi=f (fmi,Δwmi) (i=1,2 ..., m)；
Totally seven expression formulas, seven expression formulas can solve seven unknown quantity f to the above-mentioned expression formula 5- expression formula 11 of simultaneousb、fm、qmb、
qwm、pl、ΔmbAnd Δwm, unit width draught pressure p can be solvedl。
5. the real-time intelligent rolling mill for obtaining loading roll gap information according to claim 2, which is characterized in that when milling train is four
When roller mill, the specific steps of step (2) are as follows:
Establish the following deformation expression formula of backing roll and the roll axis that works:
Expression formula 14:fbi=f (qi) (i=1,2 ..., m)；
Expression formula 15:fwi=f (pli,qi) (i=1,2 ..., m)；
Wherein, fbAmount of deflection when for support roll axis relative to milling train zero load, q is roll force distribution, plFor the rolling of unit width
Pressure；
Establish elastic flattening following expression between roller:
Expression formula 16: Δwbi=f (qi) (i=1,2 ..., m)；
Wherein, ΔwbThe elastic flattening amount between roller；
It establishes working roll and support roller axis deformation coordinates following expression:
Expression formula 17:fbi=f (fwi,Δwbi) (i=1,2 ..., m)；
Simultaneous expression formula 14- expression formula 17, aforementioned four expression formula can solve four unknown quantity fb、q、plAnd Δwb, can solve
Unit width draught pressure p outl。
6. the real-time intelligent rolling mill for obtaining loading roll gap information according to claim 2, which is characterized in that the step
(3) specific steps are as follows:
Expression formula 12:
Wherein, ΔwsFlattening amount for the working roll contacted with band；αwsSystem is influenced for the flattening of the working roll contacted with band
Number, plFor unit width draught pressure, Δ y is two neighboring displacement sensor distance.
7. the real-time intelligent rolling mill for obtaining loading roll gap information according to claim 1, which is characterized in that the step
(4) specific steps are as follows:
Expression formula 13:h1i=s0+2fwi+2Δwsi+2ΔRwi(i=1,2 ..., m)；
Wherein, h1For loading roll gap；s0For unloaded roll gap constant；ΔwsFlattening amount for the working roll contacted with band；fwTo roll
Amount of deflection when working roll axis when processed relative to milling train zero load；ΔRwFor working roller abrasion and roll thermal crown.
8. the real-time intelligent rolling mill for obtaining loading roll gap information according to claim 1, it is characterised in that: work to be detected
Roller is top working roll.
9. the real-time intelligent rolling mill for obtaining loading roll gap information according to claim 1, it is characterised in that: the displacement passes
Sensor is ultrasonic sensor, infrared sensor or laser sensor；The range of institute's displacement sensors is greater than 20mm, measurement
Precision is less than 100nm, and repeatable accuracy is less than 50nm.
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| CN201710979559.7A CN107552578A (en) | 2017-10-19 | 2017-10-19 | A kind of intelligent rolling mill for obtaining loading roll gap information in real time |
| CN2017109795597 | 2017-10-19 |
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| EP0091586A1 (en) * | 1982-04-08 | 1983-10-19 | Sulzer-Escher Wyss Ag | A roll device |
| JP2539134B2 (en) * | 1992-03-23 | 1996-10-02 | 日本無線株式会社 | Flatness measuring device |
| CN101477353A (en) * | 2008-12-23 | 2009-07-08 | 南京钢铁股份有限公司 | Computing method for roll profile of steckel mill |
| CN102553945A (en) * | 2012-01-18 | 2012-07-11 | 燕山大学 | Abnormal shape forecasting method suitable for four-high rolling mill |
| CN202824155U (en) * | 2012-06-26 | 2013-03-27 | 中国重型机械研究院有限公司 | Variable deflection four-roller rolling mill with a plurality of screw down cylinders |
| CN104307892A (en) * | 2014-11-06 | 2015-01-28 | 广西柳州银海铝业股份有限公司 | Method for strip head correction in continuous rolling strip threading process |
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- 2017-10-19 CN CN201710979559.7A patent/CN107552578A/en not_active Withdrawn
- 2017-12-26 CN CN201711428879.XA patent/CN108080423B/en active Active
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|---|---|---|---|---|
| EP0091586A1 (en) * | 1982-04-08 | 1983-10-19 | Sulzer-Escher Wyss Ag | A roll device |
| JP2539134B2 (en) * | 1992-03-23 | 1996-10-02 | 日本無線株式会社 | Flatness measuring device |
| CN101477353A (en) * | 2008-12-23 | 2009-07-08 | 南京钢铁股份有限公司 | Computing method for roll profile of steckel mill |
| CN102553945A (en) * | 2012-01-18 | 2012-07-11 | 燕山大学 | Abnormal shape forecasting method suitable for four-high rolling mill |
| CN202824155U (en) * | 2012-06-26 | 2013-03-27 | 中国重型机械研究院有限公司 | Variable deflection four-roller rolling mill with a plurality of screw down cylinders |
| CN104307892A (en) * | 2014-11-06 | 2015-01-28 | 广西柳州银海铝业股份有限公司 | Method for strip head correction in continuous rolling strip threading process |
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| CN108080423A (en) | 2018-05-29 |
| CN107552578A (en) | 2018-01-09 |
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