CN108202085A - The board thickness control apparatus of cold continuous rolling - Google Patents
The board thickness control apparatus of cold continuous rolling Download PDFInfo
- Publication number
- CN108202085A CN108202085A CN201710199909.8A CN201710199909A CN108202085A CN 108202085 A CN108202085 A CN 108202085A CN 201710199909 A CN201710199909 A CN 201710199909A CN 108202085 A CN108202085 A CN 108202085A
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- China
- Prior art keywords
- rack
- plate thickness
- side plate
- thickness
- entrance side
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
Abstract
The present invention provides a kind of board thickness control apparatus of cold continuous rolling, even if in the case where the entrance side of final rack is not provided with plate thickness meter, the plate thickness of the entrance side of final rack can also be inhibited to change, the precision of product plate thickness is sought to improve.The board thickness control apparatus of cold continuous rolling has quality stream plate thickness calculating part (41) and the second strip thickness control portion (42).Quality stream plate thickness calculating part (41) calculates the quality stream plate thickness of the entrance side of the n-th rack (5) according to the outlet side plate thickness measured value by outlet side plate thickness meter (10) metering, the outlet side plate speed measured value by outlet side plate speedometer (9) metering and the entrance side plate speed measured value by entrance side plate speedometer (8) metering.Second strip thickness control portion (42) controls the rolling load in the (n-1)th rack (4) so that the quality stream plate thickness calculated by quality stream plate thickness calculating part (41) is consistent with the entrance side plate thickness desired value of the n-th rack (5).
Description
Technical field
The present invention relates to a kind of board thickness control apparatus of cold continuous rolling, more particularly to the work with being rolled to metal etc.
Sequence in relation to and for by rolled piece control into desired plate thickness cold continuous rolling board thickness control apparatus.
Background technology
In recent years, the precision prescribed of the plate thickness of rolled piece is continuously improved.Particularly in electromagnetic steel plate, due to electronic in manufacture
Steel plate is laminated when machine or transformer, it is therefore necessary to carry out high-precision strip thickness control.
In general, being provided with multiple plate thickness meters, plate speedometer and tensometer in cold continuous rolling, plate thickness is controlled
System so that as the product plate thickness specified.Various board thickness control apparatus have been had developed before this.
Such as there are feed-forward AGC (Automatic Gauge Control：Automatic thickness controls), use rack entrance side
Plate thickness meter, to the roll gap of plate thickness meter downstream side frame or the working roll circumference in plate thickness meter upstream side or downstream side
Speed is operated so that outlet side plate thickness becomes target plate thickness.
In addition, also Monitor Process, the plate thickness meter of rack outlet side is used, so that measured value becomes target plate thickness
Mode, roll gap to the plate thickness meter upstream side frame or working roll peripheral speed of the rack of upstream one changes again
To control plate thickness.It is difficult high-precision due to there is distance between rack and thickness gauge and measurement delay about Monitor Process
Ground controls plate thickness.
Then there is a kind of quality stream AGC, using the plate thickness meter for being set to rack entrance side and be set to rack entrance
Side, the plate speedometer of outlet side, the working roll peripheral speed of roll gap or upstream side frame to rack change so that root
Become target plate thickness according to the quality stream plate thickness that quality stream rule calculates.
In addition, there is a kind of mode for the roll gap for controlling rack in No. 4818890 bulletins of Japanese Patent No., responded with height
For the purpose of the localized variation of the deformation drag of ground control base material, rolling load and the curved power of rod are measured in final rack, and utilize
Milling train elasticity formula calculates the outlet side plate thickness of final rack, in a manner of outlet side plate thickness calculated value to be made to become target plate thickness,
The roll gap of rack is controlled.In this mode, by being certain by tension-proof, come tension drop when preventing from closing roll gap
The increase of rolling load caused by low.
In general, these strip thickness controls are suitable for multiple racks, the high precision int of product plate thickness is realized.
Existing technical literature：
Patent document：
Patent document 1：No. 4818890 bulletins of Japanese Patent No.
As described above, being useful in multiple racks by combining the board thickness control apparatus proposed before this, plate is thus improved
Thick precision.But there are it is as follows the problem of.
Due to sensors such as plate thickness meter, plate speedometer, tensometers at high price, whole racks may not necessarily be arranged on
Outlet side and outlet side limit the number of units that can be set to inhibit expense sometimes.
In general, having to carry out high-precision control to plate thickness in initial rack in cold continuous rolling, also it is configured
There are many sensors.But such as have outlet side and outlet side arranging plate speedometer and tensometer in final rack, going out
Mouth side arranging plate thickness gauge, and the entrance side in final rack is not provided with plate thickness meter.
If this sensor configuration, above-mentioned feed-forward AGC, quality stream AGC can not be just applicable in, and be applicable in Monitor Process.Due to
Material is harder in the rack of downstream, therefore, when being the strip thickness control operated to roll gap, has rolling load and increases and send out
The danger of raw shape defect.Therefore, in the case of being applicable in Monitor Process in final rack, usually to the upstream one of final rack
The working roll peripheral speed of a rack is operated.In the case of this composition, as long as usually high-precision in initial rack
Degree ground control plate thickness, it will be able to accurately control into the product plate thickness of target.
But in the rolling that can roll the thin material near minimum plate thickness, the friction coefficient in the roller aperture type of downstream rack
It is significantly changed due to mill speed, rolling load changes, and thus the plate thickness of rack outlet side changes.Therefore, not
In the case of the entrance side plate thickness that final rack can be controlled, the plate thickness of final rack entrance side is changed according to mill speed, from
And reduce the plate thickness precision of final rack outlet side.
In the configuration of this sensor, it is also considered that when being applicable in the strip thickness control of above-mentioned No. 4818890 bulletins of Japanese Patent No.
Situation, but in the rolling that can roll the thin material near minimum plate thickness, that is, turn off roll gap, only rolling load increases,
In the case that rolling load reaches upper control limit, desired plate thickness is not ensured that.In addition, reach target even if as described above
Also because of high load capacity shape defect may occur for plate thickness.
Invention content
The present invention was completed to solve the above problem, even if its purpose is to provide a kind of entering in final rack
In the case that mouth side does not have plate thickness meter, the plate of the cold continuous rolling of the outlet side plate thickness of final rack also can be accurately controlled
Thick control device.
In order to achieve the above object, the board thickness control apparatus of cold continuous rolling of the present invention is formed as follows.
Cold continuous rolling has n (n is more than 2 natural number) seat rolling machine frame.N-th rack is with being rolled to rolled piece
The n-th working roll final rack.(n-1)th rack is arranged on the upstream of the n-th rack, with n-th rolled to rolled piece-
1 working roll and the (n-1)th speed control unit controlled the peripheral speed of the (n-1)th working roll.
In addition, cold continuous rolling has outlet side plate thickness meter, outlet side plate speedometer and entrance side plate speedometer.Outlet
Side plate thickness meter measures the plate thickness of the rolled piece of the outlet side of the n-th rack.Export the outlet side of side plate speedometer the n-th rack of metering
The plate speed (travelling speed) of rolled piece.The plate speed that entrance side plate speedometer measures the rolled piece of the entrance side of the n-th rack (transports speed
Degree).
Board thickness control apparatus has the first strip thickness control portion, quality stream plate thickness calculating part and the second strip thickness control portion.
First strip thickness control portion is Monitor Process, makes outlet side plate thickness meter metering to the (n-1)th speed control unit feedback
Outlet side plate thickness measured value and the n-th rack outlet side plate thickness desired value differential be bordering on 0 speed change values.
Quality stream plate thickness calculating part according to the outlet side plate thickness measured value measured by outlet side plate thickness meter, by outlet side plate
The outlet side plate speed measured value of speedometer metering and the entrance side plate speed measured value measured by entrance side plate speedometer,
The quality stream plate thickness of the entrance side of n-th rack is calculated.
Second strip thickness control portion controls the rolling load in the (n-1)th rack so that by quality stream plate thickness calculating part
The quality stream plate thickness of calculating is consistent with the entrance side plate thickness desired value of the n-th rack.The entrance side plate of final rack is controlled in this way
It is thick.
Preferably, cold continuous rolling has the n-th -2 rack in the upstream of the (n-1)th rack, n-th -2 rack have pair
The n-th -2 working roll that rolled piece is rolled and the n-th -2 speed control controlled the peripheral speed of the n-th -2 working roll
Device.In addition, the second strip thickness control portion makes the quality of quality stream plate thickness calculating part calculating to the n-th -2 speed control unit feedback
The differential of the entrance side plate thickness desired value of flowing plate thickness and the n-th rack is bordering on 0 speed change values, to the rolling in the (n-1)th rack
Load is controlled.
Preferably, there is the (n-1)th rack the (n-1)th press control controlled the roll gap of the (n-1)th working roll to fill
It puts.In addition, the second strip thickness control portion makes the quality stream of quality stream plate thickness calculating part calculating to the (n-1)th press control device feedback
The differential of the entrance side plate thickness desired value of plate thickness and the n-th rack is bordering on 0 roll gap change values, and the rolling in the (n-1)th rack is born
Lotus is controlled.
A mode according to the present invention, the (n-1)th rack have the controlled the roll gap of the (n-1)th working roll
N-1 press control devices.Cold continuous rolling has the n-th -2 rack in the upstream of the (n-1)th rack, n-th -2 rack have pair
The n-th -2 working roll that rolled piece is rolled.In addition, board thickness control apparatus has rack entrance side plate thickness calculating part and third plate
Thick control unit.
Rack entrance side plate thickness calculating part according to the rolling load measured value measured by the (n-1)th press control device, by
The working roll peripheral speed of n-1 speed control units metering and the quality stream plate thickness calculated by quality stream plate thickness calculating part,
The plate thickness of the entrance side of (n-1)th rack is calculated.
Third strip thickness control portion controls the rolling load in the n-th -2 rack so that by rack entrance side plate thickness meter
The plate thickness calculated value that calculation portion calculates is consistent with the entrance side plate thickness desired value of the (n-1)th rack.Control in this way than final rack to
The entrance side plate thickness for the rack that upstream is one.
Preferably, cold continuous rolling has the n-th -3 rack in the upstream of the n-th -2 rack, n-th -3 rack have pair
The n-th -3 working roll that rolled piece is rolled and the n-th -3 speed control controlled the peripheral speed of the n-th -3 working roll
Device.In addition, third strip thickness control portion makes what rack entrance side plate thickness calculating part calculated to the n-th -3 speed control unit feedback
The differential of the entrance side plate thickness desired value of plate thickness calculated value and the (n-1)th rack is bordering on 0 speed change values, to the n-th -2 rack
In rolling load controlled.
Preferably, there is the n-th -2 rack the n-th -2 press control controlled the roll gap of the n-th -2 working roll to fill
It puts.In addition, third strip thickness control portion makes the plate of rack entrance side plate thickness calculating part calculating to the n-th -2 press control device feedback
The differential of the entrance side plate thickness desired value of thick calculated value and the (n-1)th rack is bordering on 0 roll gap change values, in the n-th -2 rack
Rolling load controlled.
Invention effect：
According to the board thickness control apparatus of cold continuous rolling of the present invention, even if in the entrance of final rack (the n-th rack)
In the case that side is not provided with plate thickness meter, the entrance side plate thickness of final rack can also be inhibited to change, final machine can be inhibited
The outlet side plate thickness of frame changes, and therefore, the outlet side plate thickness of final rack can accurately be controlled to the target plate thickness for product.
And then by inhibit than final rack upstream the entrance side of the rack (the (n-1)th rack) of one plate thickness change, will compare
The outlet side strip thickness control of the final rack upstream rack of one is desired plate thickness, and thereby, it is possible to inhibit from more upstream
Thickness deviation can more precisely control the outlet side plate thickness of final rack.
Description of the drawings
Fig. 1 is for illustrating the figure of the structure of cold continuous rolling thickness control system that embodiments of the present invention 1 are related to.
Fig. 2 is for illustrating the figure of the variation of cold continuous rolling thickness control system that embodiments of the present invention 1 are related to.
Fig. 3 is for illustrating the figure of the structure of cold continuous rolling thickness control system that embodiments of the present invention 2 are related to.
Fig. 4 is for illustrating the figure of the variation of cold continuous rolling thickness control system that embodiments of the present invention 2 are related to.
Fig. 5 is the signal for the hardware configuration example for showing processing circuit possessed by board thickness control apparatus of the present invention
Figure.
Specific embodiment
Hereinafter, with reference to attached drawing, the embodiment of the present invention will be described in detail.Further more, it is wanted to common in each figure
Element marks identical symbol and the repetitive description thereof will be omitted.
Embodiment 1
<System structure>
Fig. 1 is for illustrating the figure of the structure of cold continuous rolling thickness control system that embodiments of the present invention 1 are related to.Implement
The cold continuous rolling that mode 1 is related to has multiple rolling machine frames.The cold continuous rolling for having 5 rolling machine frames is described in Fig. 1.
5 rolling machine frames are followed successively by the first rack 1, the second rack 2, third rack 3, the 4th rack 4 from the upstream side
With the 5th rack 5.5 rolling machine frames roll rolled piece 6 to direction 7 (Fig. 1 is from left to right).
Each rack has working roll, speed control unit and press control device.Specifically, (i is nature to the i-th rack
Number, and i≤n, n=5) have：The i-th working roll of a pair (11~15) rolled to rolled piece 6；To the circumference of the i-th working roll
The i-th speed control unit (21~25) that speed is controlled；And it is depressed to the roll gap of the i-th working roll is controlled i-th
Control device (31~35).In addition, the i-th speed control unit measures the peripheral speed of the i-th working roll.I-th pressure control
Load, the i.e. rolling load that device processed is subject to the i-th working roll from rolled piece 6 measures.
In addition, the cold continuous rolling that embodiment 1 is related to has entrance side plate speedometer 8, outlet side plate speedometer 9 and outlet
Side plate thickness meter 10.Entrance side plate speedometer 8 is to the rolled piece 6 of the entrance side of the 5th rack 5 (the n-th rack) as final rack
Plate speed (travelling speed) measured.Export rolled piece 6 of the side plate speedometer 9 to the outlet side of the 5th rack 5 (the n-th rack)
Plate speed (travelling speed) measured.Export rolled piece of the side plate thickness meter 10 to the outlet side of the 5th rack 5 (the n-th rack)
6 plate thickness is measured.Further more, the cold continuous rolling that embodiment 1 is related to is not provided with plate thickness in the entrance side of final rack
Meter.
Board thickness control apparatus of the present invention is suitable for being not provided with the cold of plate thickness meter in the entrance side of final rack
Tandem mill.The board thickness control apparatus that embodiment 1 is related to has the first strip thickness control portion 40, quality stream plate thickness calculating part 41 and
Two strip thickness control portions 42.
<First strip thickness control portion (Monitor Process)>
First strip thickness control portion 40 is functioned as Monitor Process.First strip thickness control portion 40 is received by outlet side plate thickness
The outlet side plate thickness measured value of 10 metering of degree meter and the outlet side plate thickness desired value of the 5th rack 5 (the n-th rack).First plate thickness control
Portion 40 processed makes the thick and solid measured value of outlet side plate and outlet side to fourth speed control device 24 (the (n-1)th speed control unit) feedback
The differential of plate thickness desired value is bordering on 0 speed change values so that outlet side plate thickness measured value is consistent with outlet side plate thickness desired value.
By changing the working roll peripheral speed of the 4th rack 4, to make the tension variation between the 4th rack 4 and the 5th rack 5, so as to
Control the plate thickness of the outlet side of the 5th rack 5.
Specifically, it is more than going out for the 5th rack 5 in the outlet side plate thickness measured value measured by outlet side plate thickness meter 10
In the case of mouth side plate thickness desired value, the first strip thickness control portion 40 is sent to fourth speed control device 24 reduces working roll circumference
The speed change values of speed.In addition, in the case where outlet side plate thickness measured value is less than outlet side plate thickness desired value, the first plate thickness
Control unit 40 sends the speed change values for improving working roll peripheral speed to fourth speed control device 24.Further more, outlet side plate
The difference of thick and solid measured value and outlet side plate thickness desired value is bigger, and the absolute value of speed change values is bigger.
But influenced since product plate thickness is changed by the outlet side plate thickness of the 4th rack 4, in order to accurately
It controls as the product plate thickness as desired value, needs to inhibit the variation of the outlet side plate thickness of the 4th rack 4.
Hereinafter, to setting, being shown in the dotted line of Fig. 1 to inhibit the variation of the outlet side plate thickness of the 4th rack 4
Quality stream plate thickness calculating part 41 and the second strip thickness control portion 42 illustrate.
<Quality stream plate thickness calculating part>
Quality stream plate thickness calculating part 41 receives the outlet side plate thickness measured value measured by outlet side plate thickness meter 10, by exporting
The outlet side plate speed measured value and the entrance side plate speed reality measured by entrance side plate speedometer 8 that side plate speedometer 9 measures
Measured value.Quality stream plate thickness calculating part 41 substitutes into these measured values in following formula (1), calculates 4 (the (n-1)th machine of the 4th rack
Frame) outlet side quality stream plate thickness.The quality stream plate thickness calculated is sent to the second strip thickness control portion 42.Further more, the 4th
The outlet side quality stream plate thickness of rack 4 means the quality stream plate thickness of the entrance side of the 5th rack 5 (the n-th rack).
【Mathematical expression 1】
Here,
The quality stream plate thickness of the outlet side of 4th rack 4
The plate thickness measured value [mm] of the outlet side of 5th rack 5
The plate speed measured value [mpm] of the outlet side of 4th rack 4
The plate speed measured value [mpm] of the outlet side of 5th rack 5
<Second strip thickness control portion (Monitor Process)>
Second strip thickness control portion 42 receives the matter of the outlet side of the 4th rack 4 calculated by quality stream plate thickness calculating part 41
It is thick to measure flowing plate.Second strip thickness control portion 42 makes quality stream to third speed control device 23 (the n-th -2 speed control unit) feedback
The differential of the outlet side plate thickness desired value of plate thickness and the 4th rack 4 (the entrance side plate thickness desired value of the 5th rack 5) is bordering on 0 speed
Spend change values so that quality stream plate thickness and outlet side plate thickness desired value (the entrance side plate thickness mesh of the 5th rack 5 of the 4th rack 4
Scale value) unanimously, so as to control the rolling load in the 4th rack 4 (the (n-1)th rack).
It is specifically, big in the quality stream plate thickness of the outlet side of the 4th rack 4 calculated by quality stream plate thickness calculating part 41
In the case of the outlet side plate thickness desired value of the 4th rack 4, the second strip thickness control portion 42 is sent out to third speed control device 23
Sending reduces the speed change values of working roll peripheral speed.By reducing the working roll peripheral speed of third rack 3, third rack 3
And the 4th tension between rack 4 increases, and can reduce the rolling load in the 4th rack 4.As a result, it is possible to make the 5th rack
The plate thickness of the rolled piece 6 of 5 entrance side is thinning.
In addition, it is less than in the quality stream plate thickness of the outlet side of the 4th rack 4 calculated by quality stream plate thickness calculating part 41
In the case of the outlet side plate thickness desired value of 4th rack 4, the second strip thickness control portion 42 is sent to third speed control device 23
Improve the speed change values of working roll peripheral speed.By improving the working roll peripheral speed of third rack 3,3 He of third rack
Tension between 4th rack 4 is reduced, and can improve the rolling load in the 4th rack 4.As a result, it is possible to make the 5th rack 5
Entrance side rolled piece 6 plate thickness it is thickening.Further more, the difference of quality stream plate thickness and outlet side plate thickness desired value is bigger, speed change
The absolute value of value is bigger.
<Effect>
It is as described above, 1 board thickness control apparatus being related to according to the embodiment of the present invention, even if entering in final rack
In the case that mouth side does not have plate thickness meter, the plate thickness of the entrance side of the 5th rack 5 can also be inhibited to change, and the 5th can be reduced
The plate thickness of the outlet side of rack 5 changes, and therefore, the outlet side plate thickness of the 5th rack 5 can accurately be controlled to the mesh for product
Target is thick.
<Variation>
With reference to Fig. 2, the variation of embodiment 1 is illustrated.Fig. 2 is for illustrating that embodiments of the present invention 1 relate to
And cold continuous rolling thickness control system variation figure.In the above embodiment 1, by being incited somebody to action by the second strip thickness control portion 42
Speed change values feed back to third speed control device 23, control the rolling load in the 4th rack 4.But in the 4th rack 4
The control method of rolling load be not limited to this.Can also be that the second strip thickness control portion 42 is to the 4th press control device 34
(the (n-1)th press control device) feedback make the outlet side plate thickness desired value of quality stream plate thickness and the 4th rack 4 (the 5th rack 5
Entrance side plate thickness desired value) differential be bordering on 0 roll gap change values, to the rolling load in the 4th rack 4 (the (n-1)th rack)
It is controlled.Further more, the point is also the same in the following embodiments.
It is specifically, big in the quality stream plate thickness of the outlet side of the 4th rack 4 calculated by quality stream plate thickness calculating part 41
In the case of the outlet side plate thickness desired value of the 4th rack 4, the second strip thickness control portion 42 is sent out to the 4th press control device 34
Send the roll gap change values for reducing roll gap.In addition, in the case where quality stream plate thickness is less than outlet side plate thickness desired value, the second plate thickness
Control unit 42 sends the roll gap change values for expanding roll gap to the 4th press control device 34.Further more, quality stream plate thickness and outlet side
The difference of plate thickness desired value is bigger, and the absolute value of roll gap change values is bigger.
In addition, in the system of the above embodiment 1, to suitable for the cold continuous rolling being made of 5 rolling machine frames
Situation is illustrated, but the quantity of rolling machine frame is not limited to 5.Further more, the point is also the same in the following embodiments.
Embodiment 2
<System structure>
In the following, with reference to Fig. 3, embodiments of the present invention 2 are illustrated.Fig. 3 is the embodiment party for illustrating the present invention
The figure of the structure of cold continuous rolling thickness control system that formula 2 is related to.System structure shown in Fig. 3 is in addition to additional organic frame entrance side plate
It is similary with Fig. 1 other than thick calculating part 43 and this point of third strip thickness control portion 44.
The system that embodiment 2 is related to is identical with the applicable object of embodiment 1, but in the outlet for calculating third rack 3
Side plate is thick and controls different for this point of target plate thickness.Hereinafter, only a pair action different from embodiment 1 illustrates.
<Rack entrance side plate thickness calculating part>
Rack entrance side plate thickness calculating part 43 is received to be counted by the 4th press control device 34 (the (n-1)th press control device)
The rolling load measured value of amount, the 4th rack 4 by fourth speed control device 24 (the (n-1)th speed control unit) metering
Working roll peripheral speed and the quality stream plate thickness of the outlet side of the 4th rack 4 calculated by quality stream plate thickness calculating part 41.Machine
Frame entrance side plate thickness calculating part 43 substitutes into these values in following formula (2), calculates going out for third rack 3 (the n-th -2 rack)
The plate thickness of mouth side.The plate thickness calculated is sent to third strip thickness control portion 44.Further more, the plate thickness of the outlet side of third rack 3
Mean the plate thickness of the entrance side of the 4th rack 4 (the (n-1)th rack).
【Mathematical expression 2】
Here,
The plate thickness calculated value [mm] of the outlet side of third rack 3
f：For seeking the function of the plate thickness of the outlet side of third rack 3
The rolling load measured value [mm] of 4th rack 4
The working roll peripheral speed [mpm] of 4th rack 4
The quality stream plate thickness [mm] of the outlet side of 4th rack 4
It is in general, non-linear for the function of the outlet side plate thickness of third rack 3 to be asked to have in formula (2).
<Third strip thickness control portion (Monitor Process)>
Third strip thickness control portion 44 receives the third rack 3 (n-th -2 calculated by rack entrance side plate thickness calculating part 43
Rack) outlet side plate thickness calculated value.To second speed control device 22, (the n-th -3 speed control fills in third strip thickness control portion 44
Put) feedback makes the outlet side plate thickness desired value the (the 4th of outlet side plate thickness calculated value (entrance side plate thickness calculated value) and third rack 3
The entrance side plate thickness desired value of rack 4) differential be bordering on 0 speed change values so that the outlet side plate thickness of third rack 3 calculates
It is worth (the entrance side plate thickness calculated value of the 4th rack 4) and the outlet side plate thickness desired value (entrance of the 4th rack 4 of third rack 3
Side plate thickness desired value) unanimously, so as to control the rolling load in third rack 3 (the n-th -2 rack).
Specifically, the outlet side plate thickness in the third rack 3 calculated by rack entrance side plate thickness calculating part 43 calculates
In the case of outlet side plate thickness desired value of the value more than third rack 3, third strip thickness control portion 44 is to second speed control device
22 send the speed change values for reducing working roll peripheral speed.By reducing the working roll peripheral speed of the second rack 2, the second machine
Tension between frame 2 and third rack 3 increases, and can reduce the rolling load in third rack 3.As a result, it is possible to make the 4th
The plate thickness of the rolled piece 6 of the entrance side of rack 4 is thinning.
In addition, the outlet side plate thickness calculated value in the third rack 3 calculated by rack entrance side plate thickness calculating part 43 is small
In the case of the outlet side plate thickness desired value of third rack 3, third strip thickness control portion 44 is sent out to second speed control device 22
Send the speed change values for improving working roll peripheral speed.By improving the working roll peripheral speed of the second rack 2, the second rack 2
Tension between third rack 3 is reduced, and can improve the rolling load in third rack 3.As a result, it is possible to make the 4th rack
The plate thickness of the rolled piece 6 of 4 entrance side is thickening.Further more, the difference of outlet side plate thickness calculated value and outlet side plate thickness desired value is bigger, speed
The absolute value for spending change values is bigger.
<Effect>
It is as described above, 2 board thickness control apparatus being related to according to the embodiment of the present invention, even if entering in final rack
In the case that mouth side does not have plate thickness meter, it can also inhibit the entrance side of the 4th rack 4 caused by the variation of mill speed
Plate thickness change, can inhibit the 5th rack 5 entrance side plate thickness change, therefore, it is possible to than embodiment 1 more precisely
Control the outlet side plate thickness of the 5th rack 5.
<Variation>
With reference to Fig. 4, the variation of embodiment 2 is illustrated.Fig. 4 is for illustrating that embodiments of the present invention 2 relate to
And cold continuous rolling thickness control system variation figure.In the above embodiment 2, by being incited somebody to action by third strip thickness control portion 44
Speed change values feed back to second speed control device 22, to control the rolling load in third rack 3.But third rack 3
In the control method of rolling load be not limited to this.It can also be from third strip thickness control portion 44 to third press control device 33
(the n-th -2 press control device) feeds back the outlet for making outlet side plate thickness calculated value (entrance side plate thickness calculated value) and third rack 3
The differential of side plate thickness desired value (the entrance side plate thickness desired value of the 4th rack 4) is bordering on 0 roll gap change values, so as to third machine
Rolling load in frame 3 (the n-th -2 rack) is controlled.
Specifically, the outlet side plate thickness in the third rack 3 calculated by rack entrance side plate thickness calculating part 43 calculates
In the case of outlet side plate thickness desired value of the value more than third rack 3, third strip thickness control portion 44 is to third press control device
33 send the roll gap change values for reducing roll gap.In addition, in the third rack 3 calculated by rack entrance side plate thickness calculating part 43
In the case that outlet side plate thickness calculated value is less than the outlet side plate thickness desired value of third rack 3, third strip thickness control portion 44 is to the
Three press control devices 33 send the roll gap change values for expanding roll gap.Further more, outlet side plate thickness calculated value and outlet side plate thickness mesh
The difference of scale value is bigger, and the absolute value of roll gap change values is bigger.
<Hardware configuration example>
Fig. 5 is the signal for the hardware configuration example for showing processing circuit possessed by board thickness control apparatus of the present invention
Figure.First strip thickness control portion 40, quality stream plate thickness calculating part 41, the second strip thickness control portion 42, rack entrance side plate thickness calculating part
43rd, third strip thickness control portion 44 represents a part for function possessed by board thickness control apparatus, and each function is by processing circuit Lai real
It is existing.For example, processing circuit has at least one processor 91 and at least one memory 92.For example, processing circuit has
At least one specialized hardware 93.As concrete example, processing circuit is PLC (Programmable Logic Controller：
Programmable logic controller (PLC)).
In the case where processing circuit has processor 91 and memory 92, pass through software, firmware or software and firmware
Combination realize each function.At least one party of software and firmware is described as program.At least one party of software and firmware is deposited
Storage is in memory 92.Processor 91 is by reading the program stored in memory 92 and being performed, to realize each function.Place
It manages device 91 and is also referred to as CPU (Central Processing Unit), central processing unit, processing unit, arithmetic unit, Wei Chu
Manage device, microcomputer, DSP.For example, memory 92 is that RAM, ROM, flash memory, EPROM, EEPROM etc. are non-volatile
Or volatile semiconductor memory, disk, floppy disk, CD, compact disk, Mini Disk, DVD etc..
In the case where processing circuit has specialized hardware 93, processing circuit is such as single circuit, compound circuit, program
The processor after processor, concurrent program, ASIC, FPGA or combination thereof after change.For example, respectively with processing electricity
Each function is realized on road.For example, concentration realizes each function with processing circuit.
In addition, about each function, it can also realize a part with specialized hardware 93, other are realized with software or firmware
Part.
Processing circuit realizes each function by hardware 93, software, firmware or combination thereof in this wise.
Symbol description
The-the five rack of the first racks of 1-5
6 rolled pieces
7 directions
8 entrance side plate speedometers
9 outlet side plate speedometers
10 outlet side plate thickness meters
The-the five speed control unit of 21-25 First Speed control device
The first press controls of 31-35 the-the five press control device of device
40 first strip thickness control portions
41 quality stream plate thickness calculating parts
42 second strip thickness control portions
43 rack entrance side plate thickness calculating parts
44 third strip thickness control portions
91 processors
92 memories
93 hardware
Claims (6)
1. a kind of board thickness control apparatus of cold continuous rolling, which is characterized in that the cold continuous rolling has n rolling machine frames, wherein, n
For more than 2 natural number,
The cold continuous rolling includes：
N-th rack is with the final rack of the n-th working roll rolled to rolled piece；
(n-1)th rack is arranged on the upstream of n-th rack, have the (n-1)th working roll for being rolled to the rolled piece and
The (n-1)th speed control unit controlled the peripheral speed of (n-1)th working roll；
Side plate thickness meter is exported, measures the plate thickness of the rolled piece of the outlet side of n-th rack；
Side plate speedometer is exported, measures the plate speed of the rolled piece of the outlet side of n-th rack；And
Entrance side plate speedometer measures the plate speed of the rolled piece of the entrance side of n-th rack,
The board thickness control apparatus includes：
First strip thickness control portion makes the outlet of the outlet side plate thickness meter metering to (n-1)th speed control unit feedback
The differential of the outlet side plate thickness desired value of the thick and solid measured value of side plate and n-th rack is bordering on 0 speed change values；
Quality stream plate thickness calculating part, according to the outlet side plate thickness measured value measured by the outlet side plate thickness meter, by it is described go out
The outlet side plate speed measured value of mouth side plate speedometer metering and the entrance side plate speed by entrance side plate speedometer metering
Measured value is spent, the quality stream plate thickness of the entrance side of n-th rack is calculated；And
Second strip thickness control portion controls the rolling load in (n-1)th rack so that by the quality stream plate thickness
The quality stream plate thickness that calculating part calculates is consistent with the entrance side plate thickness desired value of n-th rack.
2. the board thickness control apparatus of cold continuous rolling according to claim 1, which is characterized in that
The cold continuous rolling has the n-th -2 rack in the upstream of (n-1)th rack, which has rolls to described
The n-th -2 working roll and the n-th -2 speed control controlled the peripheral speed of n-th -2 working roll that part is rolled
Device processed,
The second strip thickness control portion calculates the quality stream plate thickness calculating part to n-th -2 speed control unit feedback
Quality stream plate thickness and n-th rack entrance side plate thickness desired value differential be bordering on 0 speed change values, to described
Rolling load in n-1 racks is controlled.
3. the board thickness control apparatus of cold continuous rolling according to claim 1, which is characterized in that
(n-1)th rack has the (n-1)th press control device controlled the roll gap of (n-1)th working roll,
The second strip thickness control portion calculates the quality stream plate thickness calculating part to the (n-1)th press control device feedback
Quality stream plate thickness and n-th rack entrance side plate thickness desired value differential be bordering on 0 roll gap change values, to described
Rolling load in n-1 racks is controlled.
4. according to the board thickness control apparatus of any one of them cold continuous rolling of claims 1 to 3, which is characterized in that
(n-1)th rack has the (n-1)th press control device controlled the roll gap of (n-1)th working roll,
The cold continuous rolling has the n-th -2 rack in the upstream of (n-1)th rack, which has rolls to described
The n-th -2 working roll that part is rolled,
The board thickness control apparatus includes：
Rack entrance side plate thickness calculating part, according to the rolling load measured value measured by the (n-1)th press control device, by
The working roll peripheral speed of the (n-1)th speed control unit metering and the matter calculated by the quality stream plate thickness calculating part
It is thick to measure flowing plate, the plate thickness of the entrance side of (n-1)th rack is calculated；And
Third strip thickness control portion controls the rolling load in n-th -2 rack so that by the rack entrance side
The plate thickness calculated value that plate thickness calculating part calculates is consistent with the entrance side plate thickness desired value of (n-1)th rack.
5. the board thickness control apparatus of cold continuous rolling according to claim 4, which is characterized in that
The cold continuous rolling has the n-th -3 rack in the upstream of n-th -2 rack, which has rolls to described
The n-th -3 working roll and the n-th -3 speed control controlled the peripheral speed of n-th -3 working roll that part is rolled
Device processed,
The third strip thickness control portion makes the rack entrance side plate thickness calculating part to n-th -3 speed control unit feedback
The differential of the entrance side plate thickness desired value of the plate thickness calculated value of calculating and (n-1)th rack is bordering on 0 speed change values, right
Rolling load in n-th -2 rack is controlled.
6. the board thickness control apparatus of cold continuous rolling according to claim 4, which is characterized in that
N-th -2 rack has the n-th -2 press control device controlled the roll gap of n-th -2 working roll,
The third strip thickness control portion makes the rack entrance side plate thickness calculating part to n-th -2 press control device feedback
The differential of the entrance side plate thickness desired value of the plate thickness calculated value of calculating and (n-1)th rack is bordering on 0 roll gap change values, right
Rolling load in n-th -2 rack is controlled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016246626A JP6627740B2 (en) | 2016-12-20 | 2016-12-20 | Thickness control device for tandem cold rolling mill |
| JP2016-246626 | 2016-12-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108202085A true CN108202085A (en) | 2018-06-26 |
| CN108202085B CN108202085B (en) | 2019-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710199909.8A Active CN108202085B (en) | 2016-12-20 | 2017-03-30 | The board thickness control apparatus of cold continuous rolling |
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| Country | Link |
|---|---|
| JP (1) | JP6627740B2 (en) |
| CN (1) | CN108202085B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814049A (en) * | 2019-10-23 | 2020-02-21 | 首钢集团有限公司 | Method and device for controlling thickness of strip steel |
| CN114393033A (en) * | 2021-12-17 | 2022-04-26 | 天津市新宇彩板有限公司 | Rolling method for rolling 0.24mm ultrathin material by acid continuous rolling unit |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110807029B (en) * | 2019-09-26 | 2023-04-25 | 乳源东阳光优艾希杰精箔有限公司 | Hash mapping storage method and system for second flow thickness |
| WO2022049739A1 (en) | 2020-09-04 | 2022-03-10 | 東芝三菱電機産業システム株式会社 | Control system for tandem cold rolling mill |
| CN114192587B (en) * | 2021-12-13 | 2022-09-13 | 东北大学 | Cold-rolled plate shape control parameter setting method based on error back propagation algorithm |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07227611A (en) * | 1994-02-22 | 1995-08-29 | Nkk Corp | Board wave shape control method for continuous hot rolling mill |
| JP2008126305A (en) * | 2006-11-24 | 2008-06-05 | Nippon Steel Corp | Thickness control method in cold tandem rolling |
| CN101885003A (en) * | 2009-05-14 | 2010-11-17 | 株式会社日立制作所 | The control device of rolling equipment and control method |
| CN105363797A (en) * | 2014-08-19 | 2016-03-02 | 株式会社日立制作所 | Rolling control device and rolling control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57127518A (en) * | 1981-01-29 | 1982-08-07 | Toshiba Corp | Plate thickness controlling device for tandem rolling mill |
| JP2547850B2 (en) * | 1989-07-13 | 1996-10-23 | 株式会社東芝 | Plate thickness controller for cold tandem rolling mill |
| JP2970264B2 (en) * | 1992-10-30 | 1999-11-02 | 株式会社日立製作所 | Thickness control device of tandem rolling mill |
| JP3826762B2 (en) * | 2001-10-29 | 2006-09-27 | Ｊｆｅスチール株式会社 | Thickness control method |
| JP6025553B2 (en) * | 2012-12-26 | 2016-11-16 | 株式会社日立製作所 | Rolling control device, rolling control method, and rolling control program |
-
2016
- 2016-12-20 JP JP2016246626A patent/JP6627740B2/en active Active
-
2017
- 2017-03-30 CN CN201710199909.8A patent/CN108202085B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07227611A (en) * | 1994-02-22 | 1995-08-29 | Nkk Corp | Board wave shape control method for continuous hot rolling mill |
| JP2008126305A (en) * | 2006-11-24 | 2008-06-05 | Nippon Steel Corp | Thickness control method in cold tandem rolling |
| CN101885003A (en) * | 2009-05-14 | 2010-11-17 | 株式会社日立制作所 | The control device of rolling equipment and control method |
| CN105363797A (en) * | 2014-08-19 | 2016-03-02 | 株式会社日立制作所 | Rolling control device and rolling control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814049A (en) * | 2019-10-23 | 2020-02-21 | 首钢集团有限公司 | Method and device for controlling thickness of strip steel |
| CN110814049B (en) * | 2019-10-23 | 2021-09-21 | 首钢集团有限公司 | Method and device for controlling thickness of strip steel |
| CN114393033A (en) * | 2021-12-17 | 2022-04-26 | 天津市新宇彩板有限公司 | Rolling method for rolling 0.24mm ultrathin material by acid continuous rolling unit |
| CN114393033B (en) * | 2021-12-17 | 2024-04-05 | 天津市新宇彩板有限公司 | Rolling method for rolling 0.24mm ultrathin material by acid continuous rolling unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6627740B2 (en) | 2020-01-08 |
| CN108202085B (en) | 2019-10-01 |
| JP2018099707A (en) | 2018-06-28 |
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