CN108714629A - A kind of hot continuous rolling plate rolling side guide pressure position integrated control method - Google Patents

A kind of hot continuous rolling plate rolling side guide pressure position integrated control method Download PDF

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Publication number
CN108714629A
CN108714629A CN201810609082.8A CN201810609082A CN108714629A CN 108714629 A CN108714629 A CN 108714629A CN 201810609082 A CN201810609082 A CN 201810609082A CN 108714629 A CN108714629 A CN 108714629A
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China
Prior art keywords
strip
steel
head
pressure
flipper guide
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Granted
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CN201810609082.8A
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CN108714629B (en
Inventor
徐浩
赵闻
刘炜
程礼
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Wuhan Iron and Steel Co Ltd
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Wuhan Iron and Steel Co Ltd
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Priority to CN201810609082.8A priority Critical patent/CN108714629B/en
Publication of CN108714629A publication Critical patent/CN108714629A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/68Camber or steering control for strip, sheets or plates, e.g. preventing meandering
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48Tension control; Compression control

Abstract

The invention discloses a kind of hot continuous rolling plate rolling side guide pressure position integrated control method, full kind strip steel head carries out flipper guide head centering according to finish rolling incoming profile and lateral vibration situation and puts position control in advance;Thin Specs straight carbon steel calculates the corresponding cold conditions width value batched under target temperature according to instrument, realizes the control of flipper guide medium position;Think gauge high-strength steel realizes pressure closed loop control in the middle part of flipper guide;Full kind tail part of band steel realizes that the automatic tail portion pressure closed loop of flipper guide controls according to tail part of band steel offset direction.Real-time tracking strip steel head, the physical location of tail portion in entirely batching the period, to execute corresponding action.For the present invention since input, plate rolling side guide is 7 days in machine active time;Cold rolling feeds edge damage material returned rate is down to 0.46%, and Thin Specs straight carbon steel steel coil head turriform maximum value is decreased to 30mm, the maximum scroll sawtooth in coil of strip middle part is decreased to 2mm;Scroll abnormality incidence is from being down to 1.52%.

Description

A kind of hot continuous rolling plate rolling side guide pressure position integrated control method
Technical field
This application involves coiling machines to batch technical field more particularly to a kind of plate rolling side guide pressure position Comprehensive Control side Method is applied to hot continuous rolling production line, and extends to other hot continuous rolling production lines and batch region.
Background technology
As cold rolled automobile outside plate and hot rolling acid-cleaning steel feed quality requirements are continuously improved, user's processing method and purposes are not It is disconnected to be promoted.To ensure hot continuous rolling steel coil form quality amount, it is to pass through band that hot-continuous-rolling strip steel tradition plate rolling side guide, which crosses steel control, at present Steel head position detection and plate rolling side guide whole process pressure closed loop control to realize.
This control mode can cause plate rolling side guide concentrated wear, when wear extent is more than 10mm, need more change of lap immediately Flipper guide is taken, leads to that flipper guide service life is shorter, equipment replacement is frequent, quality risk is larger, is susceptible to and is led because batching side Steel edge portion scratch, cut, side damage, scroll exception and other issues caused by plate abrasion is uneven, while to Surfaces of Hot Rolled Strip Quality has significant impact, even steel scrap occurs when serious.The solution of problems can only replace plate rolling side guide by shutdown It realizes, not only influences production efficiency, also increase security risk.
Invention content
In order to solve the above technical problems, the present invention provides a kind of hot continuous rolling plate rolling side guide pressure position Comprehensive Control sides Method, this method can extend flipper guide and are on active service the period, reduce and shut down under the premise of ensureing that plate rolling side guide uniform wear is not exceeded Time improves day operating rate, and significantly reduces steel edge portion mass defect incidence, ensures that whole scroll is excellent.
Technical solution is a kind of hot continuous rolling plate rolling side guide pressure position Comprehensive Control used by realizing the object of the invention Method includes the following steps:
(1) strip steel head flatness detection:
The strip steel head side sway amount and strip ontology deviant for detecting finishing mill outlet strip, by the strip steel head Curved amount determines the head side sway direction of the strip, this solid offsetting side of the strip is determined according to the strip ontology deviant To;
(2) position control is put in the centering of flipper guide head in advance:
Flipper guide pendulum position amount is determined according to the strip steel head side sway amount;
By the head of the flipper guide toward head side sway direction, asymmetric pendulum is carried out with flipper guide pendulum position amount Position;
(3) strip steel head tracing detection:
The head position of strip described in tracing detection, when detecting that the strip steel head enters the flipper guide, to institute The head position for stating flipper guide carries out short stroke control;
After detecting that the strip steel head enters the coiling machine, and when the reel of the coiling machine builds process, Exit the short stroke control;
(4) flipper guide ontology controls:
After the strip steel head enters the coiling machine, and before the tail part of band steel throws steel, according to the strip Thickness executes medium position control to the flipper guide ontology or middle part pressure controls;
(5) tail part of band steel tracing detection:
The tail position of strip described in tracing detection, judges whether tail part of band steel throws steel, when detecting the tail part of band steel When throwing steel, then exits and medium position control or the control of middle part pressure are executed to the flipper guide ontology, pressed into flipper guide tail portion Power closed-loop control.
Further, in step (1), the strip steel head flatness detection, including:
The finish rolling that the strip is obtained using finish rolling outlet width gage exports lateral vibration curve;
The maximum Dev that lateral vibration curve calculates lateral vibration within the scope of the strip steel head 50m is exported according to the finish rollingmaxWith Minimum DevminAnd within the scope of the strip 50m to 100m lateral vibration mean value Devave
Take Devmax-DevaveWith Devmin-DevaveThe larger difference of middle numerical value is as the strip steel head side sway amount;
The positive negativity of the difference corresponds to the strip steel head and is biased to transmission side or active side respectively, according to the difference Positive negativity determines head side sway direction;
Take the mean value DevaveAs the strip ontology deviant;
The mean value DevavePositive negativity correspond to the strip ontology respectively and be biased to transmission side or active side, according to described Mean value DevavePositive negativity, determine the ontology offset direction.
Further, described that flipper guide pendulum position amount, packet are determined according to the strip steel head side sway amount in step (2) It includes:
Judge whether the numerical value of the strip steel head side sway amount is more than 60mm:
If the numerical value of the strip steel head side sway amount>60mm, then the amplitude of flipper guide pendulum position amount is 30mm;
If numerical value≤60mm of the strip steel head side sway amount takes the strip steel head side sway amount half as the side Guide plate puts position amount.
Further, in step (3), the thermometal detector and the coiling machine being arranged before the coiling machine are utilized Pinch roller load relay tracing detection described in strip head position;
When receiving the signal of the thermometal detector, it is determined that the strip steel head enters the flipper guide;
When receiving the signal of the pinch roller load relay, it is determined that the strip steel head enters the coiling machine simultaneously And the reel of the coiling machine builds a process.
Further, in step (4), the thickness according to the strip, position in being executed to the flipper guide ontology Control or the control of middle part pressure are set, including:
According to the transmission data value in form control centre WINCC pictures obtain the strip thickness and hot surrender it is strong Degree;
As hot yield strength≤235Mpa of thickness≤6mm of the strip and the strip, the middle part is executed Position controls;
As the hot yield strength > 235Mpa of the thickness G T.GT.GT 6mm or described strips of the strip, the middle part is executed Pressure controls.
Further, in step (4), the medium position control, including:
Using the cold conditions width value of the strip as the aperture desired value of the flipper guide;
To the flipper guide toward the ontology offset direction, asymmetric clamping, folder are carried out with the strip ontology deviant It holds to the center line of flipper guide described in bilateral and is overlapped with the center line of the strip ontology of offset.
Further, the cold conditions width value is determined by following steps:
The hot width of strip ontology of finishing mill outlet strip is detected using finish rolling outlet width gage;
According to the material carbon equivalent of the strip and the hot width of strip ontology, it is corresponding to fit the strip Batch the cold conditions width value under target temperature CT.
Further, the hot width of strip ontology that finishing mill outlet strip is detected using finish rolling outlet width gage, Including:
Take the mean value Wid of 30m to the 80m range insied widths of the strip of finishing mill outletaveAs the strip sheet Body heat state width.
Further, in step (4), the middle part pressure control, including:
According to the ontology offset direction, pressure closed loop control is carried out to the flipper guide of ontology offset direction same side System, target pressure value are 3KN~8KN.
Further, in step (5), strip described in the side pressure head load relay tracing detection by finish rolling intermediate stand Tail position determine that the tail part of band steel throws steel when the signal of the side pressure head load relay disconnects;
In step (5), the control of flipper guide tail portion pressure closed loop, including:
The finish rolling that the strip is obtained using finish rolling outlet width gage exports lateral vibration curve;
The maximum that lateral vibration curve calculates lateral vibration within the scope of the tail part of band steel 10m to 20m is exported according to the finish rolling DevtmaxWith minimum Devtmin, take Devtmax-DevaveWith Devtmin-DevaveThe larger difference of middle numerical value is as tail part of band steel Deviant;The positive negativity of the tail part of band steel deviant corresponds to the tail part of band steel and is biased to transmission side or active side respectively, according to The positive negativity of the tail part of band steel deviant, determines tail portion offset direction;
According to the tail portion offset direction, pair pressure closed loop control is carried out with the flipper guide of tail portion offset direction opposite side System, target thickness and hot yield strength of the target pressure value that flipper guide tail portion pressure closed loop controls according to the strip Rank and determine.
As shown from the above technical solution, hot continuous rolling plate rolling side guide pressure position integrated control method provided by the invention, It is exported from finishing mill in strip and before strip steel head do not reach flipper guide, according to finish rolling incoming profile and lateral vibration situation offside Guide plate head carries out asymmetric pendulum position, and flipper guide head pose is ajusted in advance before receiving strip, not only it is possible to prevente effectively from because Strip steel head edge damage caused by plate rolling side guide, cut and the mass defects such as scroll is bad are hit/rubbed to strip steel head side sway, And in the case of the very big side sway of strip steel head can be substantially reduced, because flipper guide head short stroke acts cause strip steel head by Resistance, the production accident of steel scrap.
After coiler mandrel builds (establishing tension, the tension control system of coiling machine is started to work), according to supplied materials thickness Medium position control or the control of middle part pressure for realizing flipper guide ontology, overcome flipper guide to wear the influence to steel edge portion, can Plate rolling side guide abrasion is effectively reduced on the basis of ensureing scroll, improves the plate rolling side guide military service period, reduces steel edge portion Scratch, cut, side damage, scollop, scallop and other issues, and significantly improve production run stability.
The hot continuous rolling plate rolling side guide pressure position integrated control method of the present invention has achieved following beneficial since input Effect:
1, the plate rolling side guide replacement cycle substantially reduces, and plate rolling side guide is 7 days (sides in the prior art in machine active time Guide plate active time is 1 day), ensure strip quality simultaneously, greatly improves the period of being on active service;Flipper guide is avoided to fix abrasion, Downtime is effectively reduced, operating efficiency is improved.
2, cold rolling feeds batch edge damage defect material returned rate and are greatly reduced, and cold rolling feeds edge damage material returned rate of the invention is 0.46% (material returned rate is up to 2.21% to prior art plate rolling side guide during one's term of military service).
3, for the Thin Specs straight carbon steel of trimmed size H≤6mm and hot yield strength≤235Mpa, implementing the present invention Afterwards, belt steel surface foreign matter defect in kind is substantially reduced, and coiling clamp roller roll surface Anomalous frequency is greatly reduced, such steel grade coil of strip head Portion's turriform maximum value is from 60mm is decreased to 30mm, the maximum scroll sawtooth in coil of strip middle part is decreased to 2mm from 5mm;Scroll occurs extremely Rate is reduced to 1.52% (turriform≤50mm end to end, and middle part sawtooth≤3mm), such steel grade scroll qualification rate to improve from 8.11% 25%.
Description of the drawings
Fig. 1 is the flow chart of the hot continuous rolling plate rolling side guide pressure position integrated control method of the embodiment of the present invention;
Fig. 2 is the lateral vibration curve graph that finish rolling exports strip in the embodiment of the present invention 1;
Fig. 3 is the on-the-spot record figure according to strip tracking in the embodiment of the present invention 1;
Fig. 4 is the lateral vibration curve graph that finish rolling exports strip in the embodiment of the present invention 2;
Fig. 5 is the on-the-spot record figure according to strip tracking in the embodiment of the present invention 2;
Fig. 6 is the lateral vibration curve graph that finish rolling exports strip in the embodiment of the present invention 3;
Fig. 7 is the on-the-spot record figure according to strip tracking in the embodiment of the present invention 3.
Specific implementation mode
In order to make the application the technical staff in the technical field be more clearly understood that the application, below in conjunction with the accompanying drawings, Technical scheme is described in detail by specific embodiment.
Referring to Fig. 1, an embodiment of the present invention provides a kind of hot continuous rolling plate rolling side guide pressure position integrated control method, packets Include following steps:
(1) strip steel head flatness detection:
The strip steel head side sway amount and strip ontology deviant for detecting finishing mill outlet strip, according to strip steel head side sway amount The head side sway direction for determining strip, the ontology offset direction of strip is determined according to strip ontology deviant;
(2) position control is put in the centering of flipper guide head in advance:
Flipper guide pendulum position amount is determined according to strip steel head side sway amount;
By the head of flipper guide toward head side sway direction, asymmetric pendulum position is carried out with flipper guide pendulum position amount;
(3) strip steel head tracing detection:
The head position of tracing detection strip, when detecting that strip steel head enters flipper guide, the head position of offside guide plate Set carry out short stroke control;
After detecting that strip steel head enters coiling machine, and when the reel of coiling machine builds process, short stroke control is exited System;
(4) flipper guide ontology controls:
After strip steel head enters coiling machine, and before tail part of band steel throws steel, according to the thickness of strip, offside guide plate ontology Execute medium position control or the control of middle part pressure;
(5) tail part of band steel tracing detection:
The tail position of tracing detection strip, judges whether tail part of band steel throws steel, when detecting that tail part of band steel throws steel, then It exits offside guide plate ontology and executes medium position control or the control of middle part pressure, controlled into flipper guide tail portion pressure closed loop.
The present invention is keeping batching on existing equipment and control hardware foundation, without adding new equipment, according to finish rolling supplied materials Plate shape and lateral vibration situation offside nose portion carry out asymmetric pendulum position;By supplied materials thickness judge execute medium position control or in Portion's pressure control;Real-time tracking strip steel head, the physical location of tail portion in entirely batching the period, to execute corresponding action. Hot continuous rolling plate rolling side guide pressure position integrated control method provided by the invention is since input, production stable and antegrade, safety Reliably, stable quality realizes the function of plate rolling side guide pressure changeable control.
Using transmission side DS as "+" forward direction side, using active side WS as "-" negative sense side, it is situated between in detail with reference to 3 application examples The hot continuous rolling plate rolling side guide pressure position integrated control method for the present invention that continues:
Embodiment 1:
In embodiments of the present invention, a kind of hot continuous rolling plate rolling side guide pressure position integrated control method is applied to production The cold rolling slab (hot yield strength about 150Mpa) of trimmed size 3.5*1550mm, includes the following steps:
(1) strip steel head flatness detection:
The strip steel head side sway amount and strip ontology deviant of finishing mill outlet strip are detected, specially finish rolling is utilized to export The finish rolling that width gage obtains strip exports lateral vibration curve, and the finish rolling outlet lateral vibration curve of the kind strip is as shown in Figure 2;
The maximum Dev of lateral vibration within the scope of strip steel head 50m can be calculated by exporting lateral vibration curve according to finish rollingmaxThe pole and Small value DevminAnd within the scope of strip 50m to 100m (11 in corresponding diagram 2:52:30 moment are to 11:52:40 moment) lateral vibration Mean value Devave;Take Devmax-DevaveWith Devmin-DevaveThe larger difference of middle numerical value takes as strip steel head side sway amount Value DevaveAs strip ontology deviant;
The maximum Devt of lateral vibration within the scope of lateral vibration curve measuring and calculating tail part of band steel 10m to 20m is exported according to finish rollingmaxWith Minimum Devtmin, take Devtmax-DevaveWith Devtmin-DevaveThe larger difference of middle numerical value is as tail part of band steel deviant; The positive negativity of tail part of band steel deviant corresponds to tail part of band steel and is biased to transmission side or active side respectively, according to tail part of band steel deviant Positive negativity determines tail portion offset direction;
Strip steel head side sway amount is about 30mm in the present embodiment, which is positive value, therefore transmission is biased in head side sway direction Side DS;Strip ontology deviant is about 20mm in the present embodiment, which is positive value, therefore transmission side is biased in ontology offset direction DS;Tail part of band steel deviant is negative, therefore the inclined active side WS of tail part of band steel in the present embodiment;
(2) position control is put in the centering of flipper guide head in advance:
Flipper guide pendulum position amount is determined according to strip steel head side sway amount:
Judge whether the numerical value of strip steel head side sway amount is more than 60mm;If the numerical value of strip steel head side sway amount>60mm, then side The amplitude that guide plate puts position amount is 30mm;If numerical value≤60mm of strip steel head side sway amount, strip steel head side sway amount half is taken to make Position amount is put for flipper guide;
In the present embodiment, strip steel head side sway amount is 30mm<60mm, therefore strip steel head side sway amount half is taken to be led as side Plate puts position amount, i.e. flipper guide pendulum position amount is 15mm;By the head of flipper guide toward head side sway direction, that is, transmission side DS, with flipper guide It puts position amount 15mm and carries out asymmetric pendulum position;
(a) figure and (b) figure of Fig. 3 respectively illustrate the opening curve of active side WS flipper guides and transmission side DS flipper guides, 11:54:30 moment active side WS flipper guides and transmission side DS flipper guide apertures change, corresponding asymmetric pendulum bit manipulation;
(3) strip steel head tracing detection:
Thermometal detector (HMD) is mounted on the medium position of flipper guide, and testing result has certain error, works as strip When head is run to close to the position of thermometal detector, the signal of thermometal detector (HMD) can be received;Pinch roller setting exists After flipper guide, before coiling machine, load relay is installed thereon, when strip steel head enters pinch roller, load relay Action, sends out corresponding signal, illustrates coiling machine i.e. by coiling band steel, this signal is more accurate;It utilizes thermometal detector (HMD) And pinch roller load relay can tracing detection strip head position, pinch roller load relay signal correction heat gold Belong to the tracking result of detector (HMD) signal;
When receiving the signal of thermometal detector (HMD), judge that strip steel head comes into flipper guide, offside guide plate Head position carries out short stroke control;
When receiving the signal of pinch roller load relay, judge that strip steel head comes into coiling machine and coiling machine Reel builds a process, exits short stroke control;
(c) of Fig. 3 shows the load signal of finishing mill and coiling machine, 11:54:30 moment are (since strip is run Speed, therefore signal intensity may be completed in several ms, the least unit at moment is 10s in figure, thus show image with There is deviation in actual capabilities) coiling machine starts to build, and corresponding flipper guide exits short stroke control, into flipper guide ontology control System;
(4) flipper guide ontology controls:
Before strip steel head enters coiling machine to tail part of band steel throwing steel (11 in corresponding diagram 3:54:30 moment are to 11:55:37 Moment) this period, according to the thickness of strip, offside guide plate ontology executes medium position control or the control of middle part pressure;
The thickness of strip and hot yield strength are obtained according to the transmission data value in form control centre WINCC pictures; As hot yield strength≤235Mpa of thickness≤6mm of strip and strip, medium position control is executed;When the thickness of strip When the hot yield strength > 235Mpa of > 6mm or strip, middle part pressure control is executed;
In the present embodiment, strip is cold rolling slab, thickness 3.5mm<6mm and hot yield strength 150Mpa<235Mpa, Therefore medium position control is executed:
Using the cold conditions width value of the strip as the aperture desired value of flipper guide;Offside guide plate is passed toward ontology offset direction Dynamic side DS carries out asymmetric clamping, clamping to the center line of bilateral flipper guide and the band of offset with strip ontology deviant 20mm The center line of steel ontology overlaps;
Cold conditions width value is determined by following steps:
The hot width of strip ontology that finishing mill outlet strip is detected using finish rolling outlet width gage, specifically takes finishing mill to go out The mean value Wid of 30m to the 80m range insied widths of the strip of mouthaveAs the hot width of strip ontology, then according to strip Material carbon equivalent and the hot width of strip ontology fit the corresponding cold conditions width value batched under target temperature CT of strip; In other embodiments, finish rolling can also be utilized to export setting of the width gage by strip coefficient of thermal expansion, obtains strip correspondence Cold conditions width value;
In the present embodiment, it is 1558mm that width gage, which calculates under corresponding coiling temperature strip cold conditions width, therefore flipper guide Aperture is executed according to 1558mm desired values;
(5) tail part of band steel tracing detection:Pass through the side pressure head load relay tracing detection strip of finish rolling intermediate stand Tail position judges that tail part of band steel throws steel, then exits medium position control when receiving the signal of side pressure head load relay, It is controlled into flipper guide tail portion pressure closed loop:
According to tail portion offset direction, pair pressure closed loop control is carried out with the flipper guide of tail portion offset direction opposite side, side is led The target pressure value of plate tail portion pressure closed loop control is determined according to the target thickness and hot yield strength rank of strip;
In the present embodiment, 7 racks, number F1-F7 are arranged in finish rolling milling train altogether, and each rack configures side head-load Relay, relay signal exist, and illustrate have strip to pass through in rack, and relay signal disconnects explanation without strip, as finish rolling F3 When rack load relay signal disconnects, then judge that tail part of band steel throws steel;
(c) figure according to fig. 3,11:55:37 moment finish rolling F3 rack load signals disappear, and illustrate that finish rolling F3 racks are thrown Steel (tail part of band steel throwing steel) is controlled into flipper guide tail portion pressure closed loop:
In the present embodiment, tail portion offset direction is to be biased to active side WS, therefore carry out pressure closed loop to transmission side DS flipper guides Control, pressure target value is about 3KN;(d) of Fig. 3 shows the pressure history of transmission side DS flipper guides, 11:55: 37 moment are to 11:55:56 moment transmission side DS flipper guides carry out pressure closed loop control;(c) figure according to fig. 3,11:55:56 Moment coiling machine load signal disappears, and illustrates that the strip coiling is completed.
Embodiment 2:
In embodiments of the present invention, a kind of hot continuous rolling plate rolling side guide pressure position integrated control method is applied to production The beam steel (hot yield strength about 355Mpa) of trimmed size 8*1500mm, includes the following steps:
(1) strip steel head flatness detection:
The finish rolling outlet lateral vibration curve of the kind strip is as shown in figure 4, exporting lateral vibration curve according to finish rolling can calculate The maximum Dev of lateral vibration within the scope of strip steel head 50mmaxWith minimum DevminAnd it is (right within the scope of strip 50m to 100m It answers 12 in Fig. 4:08:35 moment are to 12:08:55 moment) lateral vibration mean value Devave;Take Devmax-DevaveWith Devmin-Devave The larger difference of middle numerical value takes mean value Dev as strip steel head side sway amountaveAs strip ontology deviant;
The maximum Devt of lateral vibration within the scope of lateral vibration curve measuring and calculating tail part of band steel 10m to 20m is exported according to finish rollingmaxWith Minimum Devtmin, take Devtmax-DevaveWith Devtmin-DevaveThe larger difference of middle numerical value is as tail part of band steel deviant; The positive negativity of tail part of band steel deviant corresponds to tail part of band steel and is biased to transmission side or active side respectively, according to tail part of band steel deviant Positive negativity determines tail portion offset direction;
Strip steel head side sway amount is about 40mm in the present embodiment, which is positive value, therefore transmission is biased in head side sway direction Side DS;Strip ontology deviant is about 23mm in the present embodiment, which is positive value, therefore transmission side is biased in ontology offset direction DS;Tail part of band steel deviant is negative, therefore the inclined active side WS of tail part of band steel in the present embodiment;
(2) position control is put in the centering of flipper guide head in advance:
Determine that flipper guide pendulum position is measured according to strip steel head side sway amount, in the present embodiment, strip steel head side sway amount is 40mm< 60mm, therefore take strip steel head side sway amount half as flipper guide pendulum position amount, i.e. flipper guide pendulum position amount is 20mm;By flipper guide Head carries out asymmetric pendulum position toward head side sway direction, that is, transmission side DS, with flipper guide pendulum position amount 20mm;
(a) figure and (b) figure of Fig. 5 respectively illustrate the opening curve of active side WS flipper guides and transmission side DS flipper guides, 14:40:46 moment active side WS flipper guides and transmission side DS flipper guide apertures change, corresponding asymmetric pendulum bit manipulation;
(3) strip steel head tracing detection:
When getting the signal of thermometal detector (HMD), judge that strip steel head comes into flipper guide, offside guide plate Head position carry out short stroke control;When getting the signal of pinch roller load relay, judge strip steel head Reel into coiling machine and coiling machine builds a process, exits short stroke control;
In the present embodiment, (c) of Fig. 5 shows the load signal of finishing mill and coiling machine, 14:40:46 moment rolled up Machine is taken to start to build, corresponding flipper guide exits short stroke control, is controlled into flipper guide ontology;
(4) flipper guide ontology controls:
Before strip steel head enters coiling machine to tail part of band steel throwing steel (14 in corresponding diagram 5:40:46 moment are to 14:41:21 Moment), according to the thickness of strip, offside guide plate ontology executes medium position control or the control of middle part pressure;
The thickness of strip and hot yield strength are obtained according to the transmission data value in form control centre WINCC pictures; In the present embodiment, strip is beam steel, thickness 8mm > 6mm, and hot yield strength about 355Mpa > 235Mpa, therefore Execute middle part pressure control:
The inclined transmission side DS in ontology offset direction in the present embodiment, automatic transmission side DS flipper guides of choosing carry out pressure closed loop control System, target pressure value 5KN;
(5) tail part of band steel tracing detection:Pass through the side pressure head load relay tracing detection strip of finish rolling intermediate stand Tail position judges that tail part of band steel has thrown steel when getting the signal of side pressure head load relay, then exits middle part pressure Control is controlled into flipper guide tail portion pressure closed loop:
According to tail portion offset direction, pair pressure closed loop control is carried out with the flipper guide of tail portion offset direction opposite side, side is led The target pressure value of plate tail portion pressure closed loop control is determined according to the target thickness and hot yield strength rank of strip;
In the present embodiment, 7 racks, number F1-F7 are arranged in finish rolling milling train altogether, and each rack configures side head-load Relay, according to (c) of Fig. 5 figure, 14:41:21 moment finish rolling F3 rack load signals disappear, and illustrate that finish rolling F3 racks throw steel (tail part of band steel throwing steel) is controlled into flipper guide tail portion pressure closed loop:
In the present embodiment, tail portion offset direction is to be biased to active side WS, therefore carry out pressure closed loop to transmission side DS flipper guides Control, pressure target value is about 12KN;(d) of Fig. 5 shows the pressure history of transmission side DS flipper guides, 14:41: 21 moment are to 14:41:43 moment transmission side DS flipper guides carry out pressure closed loop control;According to (c) of Fig. 5 figure, 14:41:43 Moment coiling machine load signal disappears, and illustrates that the strip coiling is completed.
Embodiment 3:
In embodiments of the present invention, a kind of hot continuous rolling plate rolling side guide pressure position integrated control method is applied to production The wheel steel (hot yield strength about 500Mpa) of trimmed size 4*1300mm, includes the following steps:
(1) strip steel head flatness detection:
The finish rolling outlet lateral vibration curve of the kind strip is as shown in fig. 6, exporting lateral vibration curve according to finish rolling can calculate The maximum Dev of lateral vibration within the scope of strip steel head 50mmaxWith minimum DevminAnd it is (right within the scope of strip 50m to 100m It answers 11 in Fig. 6:58:40 moment are to 11:58:53 moment) lateral vibration mean value Devave;Take Devmax-DevaveWith Devmin-Devave The larger difference of middle numerical value takes mean value Dev as strip steel head side sway amountaveAs strip ontology deviant;
The maximum Devt of lateral vibration within the scope of lateral vibration curve measuring and calculating tail part of band steel 10m to 20m is exported according to finish rollingmaxWith Minimum Devtmin, take Devtmax-DevaveWith Devtmin-DevaveThe larger difference of middle numerical value is as tail part of band steel deviant; The positive negativity of tail part of band steel deviant corresponds to tail part of band steel and is biased to transmission side or active side respectively, according to tail part of band steel deviant Positive negativity determines tail portion offset direction;
Strip steel head side sway amount is about 46mm in the present embodiment, which is positive value, therefore transmission is biased in head side sway direction Side DS;Strip ontology deviant is about 18mm in the present embodiment, which is positive value, therefore transmission side is biased in ontology offset direction DS;Tail part of band steel deviant is negative, therefore the inclined active side WS of tail part of band steel in the present embodiment;
(2) position control is put in the centering of flipper guide head in advance:
Determine that flipper guide pendulum position is measured according to strip steel head side sway amount, in the present embodiment, strip steel head side sway amount is 46mm< 60mm, therefore take strip steel head side sway amount half as flipper guide pendulum position amount, i.e. flipper guide pendulum position amount is 23mm;By flipper guide Head carries out asymmetric pendulum position toward head side sway direction, that is, transmission side DS, with flipper guide pendulum position amount 23mm;
(a) figure and (b) figure of Fig. 7 respectively illustrate the opening curve of active side WS flipper guides and transmission side DS flipper guides, 11:58:45 moment active side WS flipper guides and transmission side DS flipper guide apertures change, corresponding asymmetric pendulum bit manipulation;
(3) strip steel head tracing detection:
When getting the signal of thermometal detector (HMD), judge that strip steel head comes into flipper guide, offside guide plate Head position carry out short stroke control;When getting the signal of pinch roller load relay, judge strip steel head Reel into coiling machine and coiling machine builds a process, exits short stroke control;
In the present embodiment, (c) of Fig. 7 shows the load signal of finishing mill and coiling machine, 11:58:45 moment rolled up Machine is taken to start to build, corresponding flipper guide exits short stroke control, is controlled into flipper guide ontology;
(4) flipper guide ontology controls:
Before strip steel head enters coiling machine to tail part of band steel throwing steel (11 in corresponding diagram 7:58:45 moment are to 11:59:55 Moment), according to the thickness of strip, offside guide plate ontology executes medium position control or the control of middle part pressure;
The thickness of strip and hot yield strength are obtained according to the transmission data value in form control centre WINCC pictures; In the present embodiment, strip is wheel steel, thickness 4mm<6mm, but hot yield strength about 500Mpa > 235Mpa, therefore in execution Portion's pressure control:
The inclined transmission side DS in ontology offset direction in the present embodiment, automatic transmission side DS flipper guides of choosing carry out pressure closed loop control System, target pressure value 5KN;
(5) tail part of band steel tracing detection:Pass through the side pressure head load relay tracing detection strip of finish rolling intermediate stand Tail position judges that tail part of band steel has thrown steel when getting the signal of side pressure head load relay, then exits middle part pressure Control is controlled into flipper guide tail portion pressure closed loop:
According to tail portion offset direction, pair pressure closed loop control is carried out with the flipper guide of tail portion offset direction opposite side, side is led The target pressure value of plate tail portion pressure closed loop control is determined according to the target thickness and hot yield strength rank of strip;
In the present embodiment, 7 racks, number F1-F7 are arranged in finish rolling milling train altogether, and each rack configures side head-load Relay, according to (c) of Fig. 7 figure, 11:59:55 moment finish rolling F3 rack load signals disappear, and illustrate that finish rolling F3 racks throw steel (tail part of band steel throwing steel) is controlled into flipper guide tail portion pressure closed loop:
In the present embodiment, tail portion offset direction is to be biased to active side WS, therefore carry out pressure closed loop to transmission side DS flipper guides Control, pressure target value is about 7KN;(d) of Fig. 7 shows the pressure history of transmission side DS flipper guides, 11:59: 55 moment are to 12:00:13 moment transmission side DS flipper guides carry out pressure closed loop control;According to (c) of Fig. 5 figure, 12:00:13 Moment coiling machine load signal disappears, and illustrates that the strip coiling is completed.
By above-described embodiment, the invention has the advantages that advantage:
1) hot continuous rolling plate rolling side guide pressure position integrated control method provided by the invention is keeping batching existing equipment And on control hardware foundation, without adding new equipment, full kind strip steel head is carried out according to finish rolling incoming profile and lateral vibration situation Position control is put in the centering of plate rolling side guide head in advance;Thin Specs straight carbon steel according to instrument calculate it is corresponding batch it is cold under target temperature State width value realizes the control of flipper guide medium position;Think gauge high-strength steel realizes pressure closed loop control in the middle part of flipper guide;Full kind Tail part of band steel realizes that the automatic tail portion pressure closed loop of flipper guide controls according to tail part of band steel offset direction.It is real in entirely batching the period When tracking strip steel head, the physical location of tail portion, to execute corresponding action.The present invention is since input, production stable and antegrade, Securely and reliably, stable quality.
2) present invention judges that executing medium position control or middle part presses by supplied materials thickness and the hot yield strength of supplied materials Power controls, and medium position control exports width gage by finish rolling and calculates the strip cold conditions width value under different coiling temperatures, and As Thin Specs straight carbon steel medium position control targe value, scroll in the middle part of strip can be effectively ensured, while not contacting and batching side and lead Plate, avoiding side defects of strip steel, (position target value crosses conference and causes sawtooth scroll in the middle part of strip, and desired value is too small to cause side to lead Plate is worn, and causes edge fault).
3) present invention passes through strip ontology deviant DevaveDirection automatically selects corresponding direction flipper guide pressure closed loop control On the one hand system can substantially reduce " sawtooth " phenomenon in the middle part of coil of strip, and realize according to finish rolling Automatic Flatness Control, avoid it is artificial because Element ensure that the stability of good scroll;On the other hand in the case of can avoid the very big side sway of strip steel head, because flipper guide pressure is closed Ring control side selection is improper, causes strip clamping to be obstructed, the production accident of steel scrap.
4) present invention both can guarantee scroll in the middle part of strip, can also have been subtracted by pressure closed loop desired value in the middle part of rational guide plate Few flipper guide degree of wear.By tail part of band steel offset direction, the control of opposite side flipper guide pressure closed loop is automatically selected, it can be effective It is bad to improve the coil of strip tail portion scroll caused by finish rolling tail portion side sway changes.
5) present invention is automatically given tail part of band steel pressure and is closed by strip target thickness and hot yield strength correspondence Ring control targe value can ensure tail part of band steel scroll, rationally reduce flipper guide wear extent and (be directed to the general carbon of Thin Specs Steel, tail portion flipper guide are controlled using small pressure, avoid pressure is excessive from causing side defects of strip steel and scroll arching phenomenon;For thickness Size high-tensile steel, tail portion flipper guide are controlled using big pressure, ensure that tail portion coil of strip scroll is excellent).
Although the preferred embodiment of the application has been described, one of ordinary skilled in the art once knows substantially Creative concept, then additional changes and modifications may be made to these embodiments.It is wrapped so the following claims are intended to be interpreted as It includes preferred embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application God and range.In this way, if these modifications and variations of the application belong to the range of the application claim and its equivalent technologies Within, then the application is also intended to include these modifications and variations.

Claims (10)

1. a kind of hot continuous rolling plate rolling side guide pressure position integrated control method, which is characterized in that include the following steps:
(1) strip steel head flatness detection:
The strip steel head side sway amount and strip ontology deviant for detecting finishing mill outlet strip, according to the strip steel head side sway amount The head side sway direction for determining the strip, the ontology offset direction of the strip is determined according to the strip ontology deviant;
(2) position control is put in the centering of flipper guide head in advance:
Flipper guide pendulum position amount is determined according to the strip steel head side sway amount;
By the head of the flipper guide toward head side sway direction, asymmetric pendulum position is carried out with flipper guide pendulum position amount;
(3) strip steel head tracing detection:
The head position of strip described in tracing detection, when detecting that the strip steel head enters the flipper guide, to the side The head position of guide plate carries out short stroke control;
After detecting that the strip steel head enters the coiling machine, and when the reel of the coiling machine builds process, exit The short stroke control;
(4) flipper guide ontology controls:
After the strip steel head enters the coiling machine, and before the tail part of band steel throws steel, according to the thickness of the strip, Medium position control or the control of middle part pressure are executed to the flipper guide ontology;
(5) tail part of band steel tracing detection:
The tail position of strip described in tracing detection, judges whether tail part of band steel throws steel, when detecting that the tail part of band steel throws steel When, then it exits and medium position control or the control of middle part pressure is executed to the flipper guide ontology, closed into flipper guide tail portion pressure Ring controls.
2. hot continuous rolling plate rolling side guide pressure position integrated control method as described in claim 1, it is characterised in that:Step (1) in, the strip steel head flatness detection, including:
The finish rolling that the strip is obtained using finish rolling outlet width gage exports lateral vibration curve;
The maximum Dev that lateral vibration curve calculates lateral vibration within the scope of the strip steel head 50m is exported according to the finish rollingmaxWith it is minimum Value DevminAnd within the scope of the strip 50m to 100m lateral vibration mean value Devave
Take Devmax-DevaveWith Devmin-DevaveThe larger difference of middle numerical value is as the strip steel head side sway amount;
The positive negativity of the difference corresponds to the strip steel head and is biased to transmission side or active side respectively, according to the positive and negative of the difference Property, determine head side sway direction;
Take the mean value DevaveAs the strip ontology deviant;
The mean value DevavePositive negativity correspond to the strip ontology respectively and be biased to transmission side or active side, according to the mean value DevavePositive negativity, determine the ontology offset direction.
3. hot continuous rolling plate rolling side guide pressure position integrated control method as described in claim 1, it is characterised in that:Step (2) described that flipper guide pendulum position amount is determined according to the strip steel head side sway amount in, including:
Judge whether the numerical value of the strip steel head side sway amount is more than 60mm:
If the numerical value of the strip steel head side sway amount>60mm, then the amplitude of flipper guide pendulum position amount is 30mm;
If numerical value≤60mm of the strip steel head side sway amount takes the strip steel head side sway amount half as the flipper guide Put position amount.
4. hot continuous rolling plate rolling side guide pressure position integrated control method as described in claim 1, it is characterised in that:Step (3) in, using the thermometal detector and the coiling machine that are arranged before the coiling machine pinch roller load relay with Track detects the head position of the strip;
When receiving the signal of the thermometal detector, it is determined that the strip steel head enters the flipper guide;
When receiving the signal of the pinch roller load relay, it is determined that the strip steel head enters the coiling machine and institute The reel for stating coiling machine builds a process.
5. hot continuous rolling plate rolling side guide pressure position integrated control method as described in claim 1, it is characterised in that:Step (4) in, the thickness according to the strip executes medium position control to the flipper guide ontology or middle part pressure controls, Including:
The thickness of the strip and hot yield strength are obtained according to the transmission data value in form control centre WINCC pictures;
As hot yield strength≤235Mpa of thickness≤6mm of the strip and the strip, the medium position is executed Control;
As the hot yield strength > 235Mpa of the thickness G T.GT.GT 6mm or described strips of the strip, the middle part pressure is executed Control.
6. the hot continuous rolling plate rolling side guide pressure position integrated control method as described in claim 1 or 5, it is characterised in that:Step Suddenly in (4), the medium position control, including:
Using the cold conditions width value of the strip as the aperture desired value of the flipper guide;
To the flipper guide toward the ontology offset direction, asymmetric clamping is carried out with the strip ontology deviant, clamping is extremely The center line of flipper guide described in bilateral is overlapped with the center line of the strip ontology of offset.
7. hot continuous rolling plate rolling side guide pressure position integrated control method as claimed in claim 6, it is characterised in that:It is described cold State width value is determined by following steps:
The hot width of strip ontology of finishing mill outlet strip is detected using finish rolling outlet width gage;
According to the material carbon equivalent of the strip and the hot width of strip ontology, fit that the strip is corresponding to be batched The cold conditions width value under target temperature CT.
8. hot continuous rolling plate rolling side guide pressure position integrated control method as claimed in claim 7, it is characterised in that:The profit The hot width of strip ontology of finishing mill outlet strip is detected with finish rolling outlet width gage, including:
Take the mean value Wid of 30m to the 80m range insied widths of the strip of finishing mill outletaveAs the strip calor innatus State width.
9. the hot continuous rolling plate rolling side guide pressure position integrated control method as described in claim 1 or 5, it is characterised in that:Step Suddenly in (4), the middle part pressure control, including:
According to the ontology offset direction, pressure closed loop control, mesh are carried out to the flipper guide of ontology offset direction same side Mark pressure value is 3KN~8KN.
10. hot continuous rolling plate rolling side guide pressure position integrated control method as described in claim 1, it is characterised in that:Step (5) in, the tail position of strip described in the side pressure head load relay tracing detection by finish rolling intermediate stand, when the side pressure When the signal of head load relay disconnects, determine that the tail part of band steel throws steel;
In step (5), the control of flipper guide tail portion pressure closed loop, including:
The finish rolling that the strip is obtained using finish rolling outlet width gage exports lateral vibration curve;
The maximum that lateral vibration curve calculates lateral vibration within the scope of the tail part of band steel 10m to 20m is exported according to the finish rolling DevtmaxWith minimum Devtmin, take Devtmax-DevaveWith Devtmin-DevaveThe larger difference of middle numerical value is as tail part of band steel Deviant;The positive negativity of the tail part of band steel deviant corresponds to the tail part of band steel and is biased to transmission side or active side respectively, according to The positive negativity of the tail part of band steel deviant, determines tail portion offset direction;
According to the tail portion offset direction, pair pressure closed loop control is carried out with the flipper guide of tail portion offset direction opposite side, Target thickness and hot yield strength grade of the target pressure value of flipper guide tail portion pressure closed loop control according to the strip It does not determine.
CN201810609082.8A 2018-06-13 2018-06-13 Comprehensive control method for pressure position of hot continuous rolling coiling side guide plate Active CN108714629B (en)

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