CN108405629B - A kind of artificial circuit of the control method of the hot continuous rolling AGC system based on serials control - Google Patents
A kind of artificial circuit of the control method of the hot continuous rolling AGC system based on serials control Download PDFInfo
- Publication number
- CN108405629B CN108405629B CN201810278207.3A CN201810278207A CN108405629B CN 108405629 B CN108405629 B CN 108405629B CN 201810278207 A CN201810278207 A CN 201810278207A CN 108405629 B CN108405629 B CN 108405629B
- Authority
- CN
- China
- Prior art keywords
- comparator
- control
- resistance
- circuit
- hydraulic cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- B21B37/18—Automatic gauge control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
A kind of control method and its artificial circuit of the hot continuous rolling AGC system based on serials control.It is related to hot-rolling mill manufacture field.Propose it is a kind of make optimization based on serials control and to the control method of AGC system in hot continuous rolling, thus realize pair strip thickness carry out high-precision control the hot continuous rolling AGC system based on serials control control method and its artificial circuit.The technical solution of the present invention is as follows: the following steps are included: 1), plate preliminary working；2) finishing mill, is debugged；3), plate finishes；4) it, is packaged；It finishes.Have the characteristics that on the whole clear logic, step it is orderly, it is easily operated, be easily achieved and good to the machining accuracy control effect of strip.
Description
Technical field
The present invention relates to hot-rolling mill manufacture fields, more particularly to the wherein improvement of hot continuous rolling control system.
Background technique
The raw material of 1780mm hot-continuous-rolling strip steel factory is qualified continuous casting billet, is supplied by steelmaking continuous casting workshop.Slab library overhead traveling crane
Slab is hung in heating furnace approach table, send to heating furnace and enters furnace roller road, then be packed into heating furnace and added by charger
Heat；Hot base directly enters stove heating.All slabs enter back into heating furnace after the weighing device weighing in heating furnace approach table
Heating.Slab is generally heated to 1150 DEG C~1250 DEG C in heating furnace, is held out outside furnace by discharging machine, part carbon steel and certain
" low temperature is come out of the stove " (about 1100 DEG C of tapping temperature) rolling mill practice can be used in low-alloy steel.
Slab after coming out of the stove first passes around the iron scale that high-pressure water descaling case before roughing removes steel slab surface, then by
Roller-way is sent to roughing mills and is rolled.
Roughing mills use four roll reversing rollers (R1) of the 1 attached edger roll of frame band (E1).Slab generally rolls on R1 milling train
System 5~7, rolls into the intermediate made-up belt of thickness 30mm~50mm thickness.R1 roughing mill be equipped with descaling header, can according to the technological requirements,
Remove regenerating oxidation iron sheet in the operation of rolling.The detection devices such as the wide instrument in side and thermo detector are equipped with after R1 milling train.
The intermediate base of the qualification come out from roughing mill enters after being sent into crop flying shear cutting head through the delay table with insulation cover
De-scaling box before finish rolling removes the iron scale of secondary generation, rolls subsequently into mm finishing mill unit.
By F1~F7, the totally 7 irreversible milling trains of frame four-roller form mm finishing mill unit.Made-up belt passes through F1~F7 mm finishing mill unit, is rolled into
The finished strip of 1.2mm~18mm.For the thickness and precision for ensuring rolled band steel, mm finishing mill unit is rolled using modern high-precision control
Machine is equipped with complete hydraulic pressing and hydraulic AGC (AGC) system and work roll bending (WRB) on F1~F7 finishing mill
With working roll play (WRS) plate form control system, can thickness to strip, convexity and straightness carry out closed-loop automatic control,
And by the plain-barreled roll roll shifting of downstream fine operation roll of mill, realize " free rolling ".In addition, to reduce roll changing time, thick, finishing mill is adopted
With working roll Quick roll-changing device, roll changing time is about 10 minutes.After F7 rack be provided with multi-functional template instrument (bandwidth,
Convexity and Thickness sensitivity).
Finished strip carries out roller repairing through the cooling facility for laminar flow on mm finishing mill unit runout table, reaches belt steel temperature
Defined coiling temperature.Strip coils into coil of strip by the three all-hydraulic coiling machines of Wrapping Roll formula after cooling.Volume is finished, will by coil stripping car
Coil of strip is drawn off from coiling machine, is sent to bundling station.Coil of strip is sent to steel coil transportation line after horizontal baler bundling, with coil car
On.Steel coil transportation is using completely horizontal transport.It needs the coil of strip for checking and sampling to take out from steel coil transportation line, is sent to coil of strip inspection
It checks, sample in the line inspection, coil of strip is returning to coil of strip conveying system after checking.On steel coil transportation line, coil of strip is weighed, after spray printing
By storage, cooling in overhead traveling crane handling to warehouse of steel roll.The coil of strip being stored in warehouse of steel roll is stacked using horizontal roll mode.Coilcooling
Afterwards, it delivers by shipment schedule.
Thickness is one of characterization most important quality index of Strip, and hot-strip thickness and precision is also always to improve product
The main target of quality.The main method for eliminating Strip thickness error is to control (AGC) system, AGC system using automatic thickness
The superiority and inferiority of system performance directly affects the precision of milling train exit thickness.Therefore the control precision for continuously improving AGC system is to improve
One major measure of strip thickness and precision and the thickness uniformity.Automatic control system is smart as hot rolled strip thickness is improved
The most important control means of degree, have become important component indispensable in modern hot rolled strip production process.
Summary of the invention
The present invention is in view of the above problems, propose a kind of controlling party based on serials control and to AGC system in hot continuous rolling
Method makes optimization, so that the thickness of the strip of realization pair carries out the hot continuous rolling AGC system based on serials control of high-precision control
Control method and its artificial circuit.
The technical solution of the present invention is as follows: the following steps are included:
1), plate preliminary working: successively including heating of plate blank, high pressure water dephosphorization and roughing mill rolling；
2), debug finishing mill: the finishing mill includes that several pressure rollers upper correspondingly and lower compression roller, the upper pressure roller are logical
Cross the top that hydraulic cylinder is connected to lower compression roller；
2.1), sensor is set: the thickness transducer for detecting steel strip thickness being set in finishing mill outlet, and hydraulic
The displacement sensor for detecting hydraulic cylinder travel is arranged in the side of cylinder；
2.2), analytical calculation: what the data and displacement sensor obtained by control centre to thickness transducer obtained
Data are analyzed, are compared, to obtain functional relation between the two；
3), plate finishes: successively including high pressure water dephosphorization, finishing mill rolling, cooling；Wherein, control centre will make a reservation for
Thickness substitutes into the functional relation that step 2.2) obtains, stroke needed for obtaining hydraulic cylinder, and through control centre according to needed for
Stroke the hydraulic cylinder in finishing mill is controlled, finally, obtain the strip of predetermined thickness；
4) it, is packaged: whole strip being batched, is packaged；It finishes.
Further include step 2.3), error calculation in step 2): being issued by control centre's comparison, analysis by control centre
The traveled distance of the control signal and hydraulic cylinder of hydraulic cylinder is controlled, and show that the function of hydraulic cylinder traveled distance and preset strokes closes
System；
To which control centre can first substitute into predetermined thickness in the functional relation that step 2.2) obtains in step 3), obtain
Stroke needed for hydraulic cylinder, then required stroke is substituted into the functional relation that step 2.3) obtains, obtaining control centre needs to issue
Preset strokes, hereafter, control centre according to the preset strokes that need to be issued to hydraulic cylinder issue control signal；Finally, it obtains pre-
Determine the strip of thickness.
The artificial circuit includes single-chip microcontroller, the D/A conversion circuit, displacement sensor simulation for being sequentially connected and being formed into a loop
Circuit, thickness transducer analog circuit and A/D conversion circuit, the D/A conversion circuit connect the displacement by power supply circuit
Sensor Analog Relay System circuit；
Institute's displacement sensors analog circuit includes comparator U1, comparator U2, resistance R10, resistance R0, resistance R11, electricity
The cathode input pin for holding C4 and capacitor C5, the comparator U1 passes through resistance R10 connection power supply circuit and the power supply of comparator U1
Foot is connected in power supply circuit, and the both ends of the resistance R0 are connected to the cathode input pin and comparator U1 of comparator U1
On output pin, the both ends of the capacitor C4 are connected on the cathode input pin of comparator U1 and the output pin of comparator U1；
The output pin of the comparator U1 is connected on the cathode input pin of comparator U2 by resistance R11, and the comparator U2's is defeated
Foot connects the A/D conversion circuit out and the supply pin of comparator U2 is connected in power supply circuit, the both ends point of the capacitor C5
It is not connected on the cathode input pin of comparator U2 and the output pin of comparator U2；
The thickness transducer analog circuit includes comparator U3, resistance R2, resistance R12 and capacitor C6, the comparator
The cathode input pin of U3 passes through the output pin of resistance R2 connection comparator U2, and the output pin of the comparator U3 connects the A/D
The supply pin of conversion circuit and comparator U3 are connected in power supply circuit, and the both ends of the resistance R12 are connected to comparator
On the cathode input pin of U3 and the output pin of comparator U3, the cathode that the both ends of the capacitor C6 are connected to comparator U3 is defeated
On the output pin for entering foot and comparator U3.
The single-chip microcontroller is AT89S51 single-chip microcontroller, and the D/A conversion circuit is ADC0809 chip, the A/D conversion electricity
Road is TLC7528 chip.
The control method of this case in actual use, can be incorporated into ADC system by the present invention, so as to by calculating twice
Out functional relation " first is that step 2.2) in calculate steel strip thickness and hydraulic cylinder travel functional relation, second is that step 2.3)
The functional relation of the traveled distance of the control signal and hydraulic cylinder for the control hydraulic cylinder that the control centre of middle calculating issues " obtains control
The preset strokes that center processed need to actually issue are control effectively, to effectively eliminate with the control signal finally to hydraulic cylinder
Error in strip finishing stands realizes the high-precision control to steel strip thickness so that the processing of strip is more accurate, efficiently
System.On the whole with clear logic, step it is orderly, it is easily operated, be easily achieved and to the machining accuracy control effect of strip
The good feature of fruit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of artificial circuit in this case,
Fig. 2 is the structural schematic diagram of thickness transducer analog circuit and displacement sensor analog circuit in Fig. 1；
Fig. 3 is the postrun step response curve figure of artificial circuit in this case.
Specific embodiment
The present invention is as shown in Figs. 1-3, comprising the following steps:
1), plate preliminary working: successively including heating of plate blank, high pressure water dephosphorization and roughing mill rolling；
2), debug finishing mill: the finishing mill includes that several pressure rollers upper correspondingly and lower compression roller, the upper pressure roller are logical
Cross the top that hydraulic cylinder is connected to lower compression roller；By pressure roller in Driven by Hydraulic Cylinder, to adjust the spacing of upper pressure roller and lower compression roller；
2.1), sensor is set: the thickness transducer for detecting steel strip thickness being set in finishing mill outlet, and hydraulic
The displacement sensor for detecting hydraulic cylinder travel is arranged in the side of cylinder；
2.2), analytical calculation: what the data and displacement sensor obtained by control centre to thickness transducer obtained
Data are analyzed, are compared, to obtain functional relation between the two；
3), plate finishes: successively including high pressure water dephosphorization, finishing mill rolling, cooling；Wherein, control centre will make a reservation for
Thickness substitutes into the functional relation that step 2.2) obtains, stroke needed for obtaining hydraulic cylinder, and through control centre according to needed for
Stroke the hydraulic cylinder in finishing mill is controlled, finally, obtain the strip of predetermined thickness；
4) it, is packaged: whole strip being batched, is packaged；It finishes.
Further include step 2.3), error calculation in step 2): being issued by control centre's comparison, analysis by control centre
The traveled distance of the control signal and hydraulic cylinder of hydraulic cylinder is controlled, and show that the function of hydraulic cylinder traveled distance and preset strokes closes
System；
To which control centre can first substitute into predetermined thickness in the functional relation that step 2.2) obtains in step 3), obtain
Stroke needed for hydraulic cylinder, then required stroke is substituted into the functional relation that step 2.3) obtains, obtaining control centre needs to issue
Preset strokes, hereafter, control centre according to the preset strokes that need to be issued to hydraulic cylinder issue control signal；Finally, it obtains pre-
Determine the strip of thickness.
The control method of this case in actual use, can be incorporated into ADC system by the present invention, so as to by calculating twice
Out functional relation " first is that step 2.2) in calculate steel strip thickness and hydraulic cylinder travel functional relation, second is that step 2.3)
The functional relation of the traveled distance of the control signal and hydraulic cylinder for the control hydraulic cylinder that the control centre of middle calculating issues " obtains control
The preset strokes that center processed need to actually issue are control effectively, to effectively eliminate with the control signal finally to hydraulic cylinder
Error in strip finishing stands realizes the high-precision control to steel strip thickness so that the processing of strip is more accurate, efficiently
System.On the whole with clear logic, step it is orderly, it is easily operated, be easily achieved and to the machining accuracy control effect of strip
The good feature of fruit.
It is below the feasibility and correctness of verifying above-mentioned control method, this case is provided with following artificial circuit:
The artificial circuit includes single-chip microcontroller, the D/A conversion circuit, displacement sensor simulation for being sequentially connected and being formed into a loop
Circuit, thickness transducer analog circuit and A/D conversion circuit, the D/A conversion circuit connect the displacement by power supply circuit
Sensor Analog Relay System circuit；
Wherein, for single-chip microcontroller using pid control algorithm, specific algorithm programming is as follows:
Institute's displacement sensors analog circuit includes comparator U1, comparator U2, resistance R10, resistance R0, resistance R11, electricity
The cathode input pin for holding C4 and capacitor C5, the comparator U1 passes through resistance R10 connection power supply circuit and the power supply of comparator U1
Foot is connected in power supply circuit, and the both ends of the resistance R0 are connected to the cathode input pin and comparator U1 of comparator U1
On output pin, the both ends of the capacitor C4 are connected on the cathode input pin of comparator U1 and the output pin of comparator U1；
The output pin of the comparator U1 is connected on the cathode input pin of comparator U2 by resistance R11, and the comparator U2's is defeated
Foot connects the A/D conversion circuit out and the supply pin of comparator U2 is connected in power supply circuit, the both ends point of the capacitor C5
It is not connected on the cathode input pin of comparator U2 and the output pin of comparator U2；In this way, can effectively be simulated by voltage
The data that displacement sensor detects, transmission function form are
The thickness transducer analog circuit includes comparator U3, resistance R2, resistance R12 and capacitor C6, the comparator
The cathode input pin of U3 passes through the output pin of resistance R2 connection comparator U2, and the output pin of the comparator U3 connects the A/D
The supply pin of conversion circuit and comparator U3 are connected in power supply circuit, and the both ends of the resistance R12 are connected to comparator
On the cathode input pin of U3 and the output pin of comparator U3, the cathode that the both ends of the capacitor C6 are connected to comparator U3 is defeated
On the output pin for entering foot and comparator U3.In this way, the data that thickness transducer detects can be effectively simulated by voltage,
Transmission function form is
The single-chip microcontroller is AT89S51 single-chip microcontroller, and the D/A conversion circuit is ADC0809 chip, the A/D conversion electricity
Road is TLC7528 chip.
In this way, running pid control algorithm in artificial circuit can be obtained step response curve shown in Fig. 3, and the song
Line has many advantages, such as that very fast, overshoot and static difference are small, to finally demonstrate the feasibility of serials control, has structure on the whole
Simplify, flexible operation, reliability and adaptable, is brought convenience for Practical Project debugging.Pass through MATLAB's early period
Simulink simulated environment can be very good to emulate control system, while pass through SCM Based artificial circuit
Design and debugging, can substantially reduce the time of simulation test, also provide for actual industrial control a kind of fast and simple
The method for adjusting controller parameter, can be according to different systems, different environment to system real-time simulation, to obtain system most
Suitable parameter, to improve the efficiency of system controller parameter tuning.
Claims (2)
1. a kind of artificial circuit of the control method of the hot continuous rolling AGC system based on serials control,
Control method the following steps are included:
1), plate preliminary working: successively including heating of plate blank, high pressure water dephosphorization and roughing mill rolling；
2), debug finishing mill: the finishing mill includes that several pressure rollers upper correspondingly and lower compression roller, the upper pressure roller pass through liquid
Cylinder pressure is connected to the top of lower compression roller；
2.1), sensor is set: the thickness transducer for detecting steel strip thickness being set in finishing mill outlet, and in hydraulic cylinder
The displacement sensor for detecting hydraulic cylinder travel is arranged in side；
2.2), analytical calculation: pass through the data of data and displacement sensor acquisition that control centre obtains thickness transducer
It analyzed, compared, to obtain functional relation between the two；
3), plate finishes: successively including high pressure water dephosphorization, finishing mill rolling, cooling；Wherein, control centre is by predetermined thickness
It substitutes into the functional relation that step 2.2) obtains, stroke needed for obtaining hydraulic cylinder, and by control centre according to required row
Journey controls the hydraulic cylinder in finishing mill, finally, obtains the strip of predetermined thickness；
4) it, is packaged: whole strip being batched, is packaged；It finishes；
The artificial circuit includes single-chip microcontroller, D/A conversion circuit, the displacement sensor simulation electricity for being sequentially connected and being formed into a loop
Road, thickness transducer analog circuit and A/D conversion circuit, the D/A conversion circuit connect the displacement by power supply circuit and pass
Sensor analog circuit；
Institute's displacement sensors analog circuit includes comparator U1, comparator U2, resistance R10, resistance R0, resistance R11, capacitor C4
Connected with the cathode input pin of capacitor C5, the comparator U1 by the supply pin of resistance R10 connection power supply circuit and comparator U1
It connects in power supply circuit, the both ends of the resistance R0 are connected to the output of the cathode input pin and comparator U1 of comparator U1
On foot, the both ends of the capacitor C4 are connected on the cathode input pin of comparator U1 and the output pin of comparator U1；It is described
The output pin of comparator U1 is connected on the cathode input pin of comparator U2 by resistance R11, the output pin of the comparator U2
The supply pin for connecting the A/D conversion circuit and comparator U2 is connected in power supply circuit, and the both ends of the capacitor C5 connect respectively
It connects on the cathode input pin of comparator U2 and the output pin of comparator U2；
The thickness transducer analog circuit includes comparator U3, resistance R2, resistance R12 and capacitor C6, the comparator U3's
Cathode input pin passes through the output pin of resistance R2 connection comparator U2, and the output pin of the comparator U3 connects the A/D conversion
The supply pin of circuit and comparator U3 are connected in power supply circuit, and the both ends of the resistance R12 are connected to comparator U3's
On the output pin of cathode input pin and comparator U3, the both ends of the capacitor C6 are connected to the cathode input pin of comparator U3
On the output pin of comparator U3；
It is characterized in that, further including step 2.3), error calculation in step 2): by control centre's comparison, analyzing by control
The traveled distance of the control signal and hydraulic cylinder of the control hydraulic cylinder that the heart issues, and obtain hydraulic cylinder traveled distance and preset strokes
Functional relation；The data that displacement sensor detects effectively are simulated by voltage, transmission function form is
To which control centre can first substitute into predetermined thickness in the functional relation that step 2.2) obtains in step 3), obtain hydraulic
Stroke needed for cylinder, then required stroke is substituted into the functional relation that step 2.3) obtains, acquisition control centre need to issue pre-
If stroke, the data that thickness transducer detects effectively are simulated by voltage, transmission function form is
Hereafter, control centre issues control signal to hydraulic cylinder according to the preset strokes that need to be issued；Finally, predetermined thickness is obtained
Strip.
2. a kind of artificial circuit of the control method of hot continuous rolling AGC system based on serials control according to claim 1,
It is characterized in that, the single-chip microcontroller is AT89S51 single-chip microcontroller, the D/A conversion circuit is ADC0809 chip, the A/D conversion
Circuit is TLC7528 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810278207.3A CN108405629B (en) | 2018-03-31 | 2018-03-31 | A kind of artificial circuit of the control method of the hot continuous rolling AGC system based on serials control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810278207.3A CN108405629B (en) | 2018-03-31 | 2018-03-31 | A kind of artificial circuit of the control method of the hot continuous rolling AGC system based on serials control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108405629A CN108405629A (en) | 2018-08-17 |
| CN108405629B true CN108405629B (en) | 2019-11-22 |
Family
ID=63133752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810278207.3A Active CN108405629B (en) | 2018-03-31 | 2018-03-31 | A kind of artificial circuit of the control method of the hot continuous rolling AGC system based on serials control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108405629B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542899A (en) * | 2007-03-19 | 2009-09-23 | 松下电器产业株式会社 | AGC circuit |
| CN201950071U (en) * | 2010-12-17 | 2011-08-31 | 中冶南方工程技术有限公司 | High precision automatic thickness control device based on thickness meter segment monitoring |
| CN204074722U (en) * | 2014-07-10 | 2015-01-07 | 太原重工股份有限公司 | The control system of tandem rolling tube machine |
| CN104741388A (en) * | 2015-04-15 | 2015-07-01 | 东北大学 | Method for controlling fine rolling thickness of hot continuous rolling |
-
2018
- 2018-03-31 CN CN201810278207.3A patent/CN108405629B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542899A (en) * | 2007-03-19 | 2009-09-23 | 松下电器产业株式会社 | AGC circuit |
| CN201950071U (en) * | 2010-12-17 | 2011-08-31 | 中冶南方工程技术有限公司 | High precision automatic thickness control device based on thickness meter segment monitoring |
| CN204074722U (en) * | 2014-07-10 | 2015-01-07 | 太原重工股份有限公司 | The control system of tandem rolling tube machine |
| CN104741388A (en) * | 2015-04-15 | 2015-07-01 | 东北大学 | Method for controlling fine rolling thickness of hot continuous rolling |
Non-Patent Citations (2)
| Title |
|---|
| 冷带轧机液压AGC***的MAC-PID串级控制;孙孟辉等;《机床与液压》;20171031;第45卷(第20期);第118-120页 * |
| 热连轧AGC***的串级预测控制;张晓东等;《北京科技大学学报》;20110831;第33卷(第8期);第1013-1017页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108405629A (en) | 2018-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103170508B (en) | Method for controlling width of hot rolling strip steel | |
| CN1980752B (en) | Method and device for measuring and adjusting the evenness and/or tension of a special steel strip or special steel film in a multi-roll stand, particularly in a 20-roll sendzimir rolling machine | |
| CN103212585B (en) | A control device of a hot mill used for thin plates and a control method of the hot mill used for thin plates | |
| CN103464469B (en) | A kind of edge drop amount control method of cold rolling non-orientation silicon steel | |
| CN104801551B (en) | A kind of hot continuous rolling slab reeling temperature controlling method | |
| CN103286141B (en) | Hot continuous rolling fine-rolling strip steel Automatic control method of width | |
| CN104741388B (en) | A kind of Rolling Thickness control method | |
| CN102688897B (en) | Control method of edge portion strip shape of cold rolling strip steel | |
| CN101618401B (en) | High precision strip rolling thickness control method based on feedback signals by thickness gauge | |
| CN105215057B (en) | Control method of medium-thickness plate rolling and conveying speed | |
| WO2021063364A1 (en) | High-efficiency double-frame double-cutting line feed-through intermediate thickness slab production line and production method | |
| CN1330930C (en) | Flexible measurement method for grain sizes of steel plate internal structure during rolling process | |
| CN100581671C (en) | Operating method for a rolling train and corresponding devices | |
| CN105251778B (en) | Feedback control method for edge drop of taper work roll shifting mill (T-WRS) | |
| CN111666653B (en) | Online judging method for setting precision of strip steel finish rolling model | |
| CN102716913B (en) | Width control method for ferrite hot rolling stainless steel wedge-shaped plate blank | |
| CN201950071U (en) | High precision automatic thickness control device based on thickness meter segment monitoring | |
| Cao et al. | VCR and ASR technology for profile and flatness control in hot strip mills | |
| CN108405629B (en) | A kind of artificial circuit of the control method of the hot continuous rolling AGC system based on serials control | |
| CN108435802A (en) | A kind of control method and its artificial circuit of the hot continuous rolling AGC system estimated based on Smith | |
| CN105414205A (en) | PLC-based online predication method for temperatures of steel plates | |
| CN102397886A (en) | System for correcting plate detection error due to transverse temperature difference of cold-rolled strip | |
| CN104801548A (en) | Method for automatically improving per-second flow balance of strip steel in hot continuous rolling strip threading process | |
| CN101811143B (en) | Temperature control method for heat-preservation casting blank to be rolled | |
| CN108655182A (en) | A kind of hot-strip production method of overall length thickness consecutive variations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |