CN106607474A - Swing control method for steel plate in front of straightening machine - Google Patents
Swing control method for steel plate in front of straightening machine Download PDFInfo
- Publication number
- CN106607474A CN106607474A CN201510703271.8A CN201510703271A CN106607474A CN 106607474 A CN106607474 A CN 106607474A CN 201510703271 A CN201510703271 A CN 201510703271A CN 106607474 A CN106607474 A CN 106607474A
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- China
- Prior art keywords
- steel plate
- plc
- control method
- cooling
- tracking
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
-
- 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
-
- 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
- B21B37/005—Control of time interval or spacing between workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Heat Treatment Processes (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention discloses a swing control method for a steel plate in front of a straightening machine. The swing control method comprises the following steps of a step 1, tracking the position, at an outlet of a rolling mill, of the steel plate by a rolling line PLC (Programmable Logic Controller); a step 2, judging whether steel plate cooling information, which is issued by a superior computer, is received by a cooling PLC system or not; a step 3, starting the function of the cooling PLC; a step 4, tracking the position of the steel plate by the rolling line PLC; a step 5, conveying the steel plate to be in front of a pre-straightening machine; a step 6, judging whether an instruction of swinging in front of the pre-straightening machine is issued or not by a rolling mill PLC; a step 7, swinging the steel plate; a step 8, judging whether the swing of the steel plate is finished or not; a step 9, pre-straightening the steel plate; a step 10, cooling the steel plate; and a step 11, straightening the steel plate. By using the swing control method for the steel plate in front of the straightening machine, which is provided by the invention, in the condition that a production technique is met, the position tracking accuracy of the steel plate can be ensured; and the abnormality generation of a steel plate cooling signal is avoided.
Description
Technical field
The present invention relates to Wide and Thick Slab steel rolling region automation control method, more particularly, it relates to a kind of
For the control method that straightener front spring swings.
Background technology
On iron and steel steel rolling mill production line, the upper next procedure logistics close coordination in actual production coordinates
It is to improve Rolling Production rhythm, increases the important step of production capacity.
As shown in figure 1, the whole producing line of slab is divided into rolling line and finishing area, rolling line region mainly sets
Have walking beam furnace 1, De-scaling box 2, roughing mill 3, finishing mill 4, with direct quenching function
Accelerated cooling device 5, the strength pre-straightening machine 6, thermal straightening machine 7 with roll-bending device etc..
In order to further improve rolling line region plate speed, upper and lower operation is efficiently cooperateed with, in actual production,
When thermal straightening machine is in steel plates straightening, latter piece rolls the steel plate for completing, quick by rolling line roller-way
Next process is transported to, starts steel plate pre-straightening, but live fast pace Rolling Production, also brought along
New problem.When previous block of steel plate does not leave cooling or thermal straightening machine, next block of steel plate needs
Swing before pre-straightening machine, the order for waiting next process to allow access into.
However, in existing rolling line tracing control, when the steel plate for needing to cool down before pre-straightening machine when swinging
Between it is long when, may cause steel plate refrigerating work procedure open in advance cooling procedure error.Often occur once
Exception can cause the cooling of current and next steel plate abnormal, ultimately result in several blocks of steel plates and sentence and useless be reduced to substandard products.
Direct losses have hundreds of thousands unit.
Due to due to steel plate logistics rhythm, in actual production, some steel plate is needed in de-distortion
Swing before straight machine, as indicated by the arrows of fig. 2, wait runs the instruction into steel.
As shown in figure 3, from the point of view of existing automatically controlling, steel plate before pre-straightening machine, rolling line PLC
Export roller table speed to realize with milling train with the tracking of cooling PLC positions.But when the steel plate for needing to cool down
When swinging more than 10s before de-distortion, steel plate position tracking is switched to rolling line PLC to track.While by
In milling train outlet roller table speed it is asynchronous with cooled region roller table speed, swing when can occur position with
Track error, actual steel plate position is still before de-distortion.But steel plate image and the inconsistent phenomenon of actual steel plate,
Long-time may result in position tracking cumulative errors, cooling occurs abnormal.
When the steel plate on-line cooling of cooled region is not completed, simultaneously because rolling rhythm is accelerated, but
When next block of steel plate enters mill milling, now rolling line tracking is switched to next block of steel plate and (rolls
System) position tracking, i.e., steel plate cooled region rolling line PLC positions tracking be switched to milling train outlet
Position.
The judgement control logic that again steel plate cooling terminates is that the tracking of steel plate tail position will leave cooled region
Exit position.So cause cooling tracking mistake in computation, and when front spring cooling information is not completed, and it is real
Border steel plate completes already cooling and completes.Because lastblock steel plate cooling information is occupied, cause next piece
The sheet steel sections condition for needing cooling is unsatisfactory for, it is impossible to perform cooling.Production exception is caused directly to be judged to
Steel scrap process.
The content of the invention
The steel plate cooling signal exception caused when swinging for straightener front spring present in prior art
Problem, it is an object of the invention to provide it is a kind of for straightener front spring swing control method.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of control method swung for straightener front spring, comprises the following steps：Step 1, rolls
Line PLC tracking milling train outlet steel plate positions；Step 2, judges to cool down whether PLC system receives
The steel plate cooling information that position machine is issued；Step 3, cools down PLC function ons；Step 4, rolling line PLC
Tracking steel plate position；Step 5, steel plate is delivered to before pre-straightening machine；Step 6, judges milling train PLC
Whether issue and swing before pre-straightening machine instruction；Step 7, steel plate swings；Step 8, judges that steel plate is
It is no to terminate to swing；Step 9, steel plate pre-straightening；Step 10, steel plate cooling；Step 11, steel plate is rectified
Directly.
An embodiment of the invention, for the judgement of step 2：If it is not, according to rolling line PLC positions
Putting following function process carries out lower road non-cooled operation production；If so, step 3 is then entered.
An embodiment of the invention, for the judgement of step 6：If so, step 7 is then entered；
If it is not, then entering step 9.
An embodiment of the invention, step 7 also includes：Step 7.1, starts cooling PLC positions
Put tracking and milling train PLC tracks steel plate position；Whether step 7.2, judge steel plate head tracing positional
More than HMD physical locations.
An embodiment of the invention, for the judgement of step 7.2：If so, then steel plate is put backward
It is dynamic；If it is not, then steel plate swings forward.
An embodiment of the invention, for the judgement of step 8：If so, step 9 is then entered；
If it is not, then return to step 7.
In above-mentioned technical proposal, the control method for the swing of straightener front spring of the present invention is full
Under conditions of sufficient production technology, it can be ensured that the correctness of steel plate position tracking, it is to avoid steel plate cooling letter
The generation of number exception.
Description of the drawings
Fig. 1 is rolling line region technology arrangement schematic diagram；
Fig. 2 is the swing schematic diagram for rolling the steel plate for completing before pre-straightening machine；
Fig. 3 is existing automatic tracking control method flow chart；
Fig. 4 is the control method flow chart swung for straightener front spring of the present invention；
Fig. 5 is that milling train is exported to steel plate cooled region roller-way and specifically arranges schematic diagram in the present invention；
Fig. 6 is swing Position Tracking Control logical schematic before light plate pre-straightening machine of the present invention.
Specific embodiment
Technical scheme is further illustrated with reference to the accompanying drawings and examples.
With reference to Fig. 4, the present invention is directed to existing control logic, under conditions of production technology is met,
Devise a kind of new steel plate swing position tracing control logic, it is ensured that the correctness of steel plate position tracking,
Avoid the generation of the problems referred to above.As shown in figure 4, the present invention may be summarized to be following each step：
S1, rolling line PLC tracking milling train outlet steel plate position；
S2, judges to cool down whether PLC system receives the steel plate cooling information that host computer is issued.If it is not,
Lower road non-cooled operation production is carried out according to the process of rolling line PLC position tracking functions；If so, then enter
S3。
S3, cools down PLC function ons；
S4, rolling line PLC track steel plate position；
S5, steel plate is delivered to before pre-straightening machine；
S6, judges whether milling train PLC issues and swing before pre-straightening machine instruction.If so, S7 is then entered；
If it is not, then entering S9.
S7, steel plate swings.Wherein the step is further included：
S7.1, starts the tracking of cooling PLC positions and milling train PLC tracks steel plate position；
Whether S7.2, judge steel plate head tracing positional more than HMD physical locations.If so, then steel plate
Swing backward；If it is not, then steel plate swings forward.
S8, judges whether steel plate terminates to swing.If so, S9 is then entered；If it is not, then returning S7.
S9, steel plate pre-straightening；
S10, steel plate cooling；
S11, steel plates straightening.
Above-mentioned steps optimize the steel plate for needing to cool down in pre-straightening forward swing steel problem, the control of the present invention
Method is the speed for replacing cooled region using milling train muzzle velocity, does not use rolling line and cooling PLC
Position tracks handoff functionality, recovers after the completion of pendulum steel.Even if steel plate head runs to cooling during pendulum steel
Region, cooling PLC tracking is calculated also can calculate tracking change according to pendulum steel.
As shown in figure 5, milling train is exported between steel plate cooled region, be sequentially arranged FX1 group roller-ways,
FX2 group roller-ways, FX3 group roller-ways, FX4 group roller-ways, FX5 group roller-ways, AC1 group roller-ways, AC2 groups
Roller-way, wherein, a-quadrant part is milling train outlet roller-way region, and B regions part is cooled region roller
Road.
Position Tracking Control logic is swung before light plate de-distortion of the present invention as shown in fig. 6, steel plate is in de-distortion
Before straight when " pendulum steel ", the judgement of FX5 and AC1 roller table speeds is carried out first.Secondly, when positioned at speed
During degree processing module 9, according to steel plate, end to end position and corresponding roller-way start over position to calculate steel plate
Actual speed.Replace cooled region AC1 speed with the speed of FX5 before de-distortion, thus cooling PLC with
Track computation model 10 also can calculate tracking change according to pendulum steel.Improve tracking accuracy, it is to avoid because
The cooling that position tracking malfunctions and causes occurs extremely.
Control technology power electrical equipment of the present invention and detection adopt below scheme：
1. rolling line roller-way is driven by variable-frequency motor；
2. position calculation is realized using PLC；
3. steel plate position detection is realized using the hot metal detector 8 shown in Fig. 2, tracing positional
Be using position on the roller-way of specific steel plate place be by select corresponding group of roller table speed roll neck integration come
Realize.
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to
The bright present invention, and be not used as limitation of the invention, as long as in the spirit of the present invention
Interior, the change, modification to embodiment described above all will fall in the range of claims of the present invention.
Claims (6)
1. it is a kind of for straightener front spring swing control method, it is characterised in that including following step
Suddenly：
Step 1, rolling line PLC tracking milling train outlet steel plate positions；
Step 2, judges to cool down whether PLC system receives the steel plate cooling information that host computer is issued；
Step 3, cools down PLC function ons；
Step 4, rolling line PLC tracking steel plate positions；
Step 5, steel plate is delivered to before pre-straightening machine；
Step 6, judges whether milling train PLC issues and swing before pre-straightening machine instruction；
Step 7, steel plate swings；
Step 8, judges whether steel plate terminates to swing；
Step 9, steel plate pre-straightening；
Step 10, steel plate cooling；
Step 11, steel plates straightening.
2. as claimed in claim 1 to be used for the control method that straightener front spring swings, its feature exists
In for the judgement of step 2：
If it is not, carrying out lower road non-cooled operation production according to the process of rolling line PLC position tracking functions；
If so, step 3 is then entered.
3. as claimed in claim 1 to be used for the control method that straightener front spring swings, its feature exists
In for the judgement of step 6：
If so, step 7 is then entered；
If it is not, then entering step 9.
4. as claimed in claim 1 to be used for the control method that straightener front spring swings, its feature exists
In step 7 also includes：
Step 7.1, starts the tracking of cooling PLC positions and milling train PLC tracks steel plate position；
Whether step 7.2, judge steel plate head tracing positional more than HMD physical locations.
5. as claimed in claim 4 to be used for the control method that straightener front spring swings, its feature exists
In for the judgement of step 7.2：
If so, then steel plate swing backward；
If it is not, then steel plate swings forward.
6. as claimed in claim 1 to be used for the control method that straightener front spring swings, its feature exists
In for the judgement of step 8：
If so, step 9 is then entered；
If it is not, then return to step 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510703271.8A CN106607474B (en) | 2015-10-26 | 2015-10-26 | The control method swung for straightener front spring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510703271.8A CN106607474B (en) | 2015-10-26 | 2015-10-26 | The control method swung for straightener front spring |
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| CN106607474A true CN106607474A (en) | 2017-05-03 |
| CN106607474B CN106607474B (en) | 2018-09-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637018A (en) * | 2018-05-31 | 2018-10-12 | 北京首钢自动化信息技术有限公司 | A method of prevent two region slabs from colliding in Plate Rolling Process |
| CN111389935A (en) * | 2020-03-12 | 2020-07-10 | 南京钢铁股份有限公司 | Control method for roller table swinging between medium plate mills |
| CN111672933A (en) * | 2020-07-16 | 2020-09-18 | 山东钢铁股份有限公司 | Steel plate straightening method |
| CN114669606A (en) * | 2020-12-24 | 2022-06-28 | 宝山钢铁股份有限公司 | Internally cooled steel plate interruption prevention control method and rolling line |
| CN114762866A (en) * | 2022-05-30 | 2022-07-19 | 宝武集团鄂城钢铁有限公司 | Method for controlling rolling rhythm of on-line quenching steel plate for rolling medium plate single stand |
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| JPS5441256A (en) * | 1977-09-09 | 1979-04-02 | Kawasaki Steel Corp | Automatic tracking method for blooming line |
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| CN101912885A (en) * | 2010-08-11 | 2010-12-15 | 马鞍山钢铁股份有限公司 | Section mill rolled piece end bending monitoring device and method |
| CN102601123A (en) * | 2012-03-21 | 2012-07-25 | 莱芜钢铁集团有限公司 | Method for controlling swinging of medium and thick plate rolling steel plate roller way |
| CN103372573A (en) * | 2012-04-28 | 2013-10-30 | 宝山钢铁股份有限公司 | Modifiable tracking control method for images of hot-rolled plate blanks |
| CN103861877A (en) * | 2014-03-27 | 2014-06-18 | 东北大学 | System and method for tracking and controlling position of steel plate of moderate-thickness plate thermal treatment furnace |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5441256A (en) * | 1977-09-09 | 1979-04-02 | Kawasaki Steel Corp | Automatic tracking method for blooming line |
| CN1990131A (en) * | 2005-12-27 | 2007-07-04 | 宝山钢铁股份有限公司 | Roughed plate bloom temperature control method in hot-rolled process |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637018A (en) * | 2018-05-31 | 2018-10-12 | 北京首钢自动化信息技术有限公司 | A method of prevent two region slabs from colliding in Plate Rolling Process |
| CN108637018B (en) * | 2018-05-31 | 2019-10-08 | 北京首钢自动化信息技术有限公司 | A method of prevent two region slabs from colliding in Plate Rolling Process |
| CN111389935A (en) * | 2020-03-12 | 2020-07-10 | 南京钢铁股份有限公司 | Control method for roller table swinging between medium plate mills |
| CN111672933A (en) * | 2020-07-16 | 2020-09-18 | 山东钢铁股份有限公司 | Steel plate straightening method |
| CN114669606A (en) * | 2020-12-24 | 2022-06-28 | 宝山钢铁股份有限公司 | Internally cooled steel plate interruption prevention control method and rolling line |
| CN114669606B (en) * | 2020-12-24 | 2024-03-08 | 宝山钢铁股份有限公司 | Method for preventing interruption of intermediate cooling steel plate and rolling line |
| CN114762866A (en) * | 2022-05-30 | 2022-07-19 | 宝武集团鄂城钢铁有限公司 | Method for controlling rolling rhythm of on-line quenching steel plate for rolling medium plate single stand |
| CN114762866B (en) * | 2022-05-30 | 2023-09-19 | 宝武集团鄂城钢铁有限公司 | Method for controlling rolling rhythm of on-line quenched steel plate rolled by medium plate single stand |
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|---|---|
| CN106607474B (en) | 2018-09-04 |
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