CN106607474B - The control method swung for straightener front spring - Google Patents
The control method swung for straightener front spring Download PDFInfo
- Publication number
- CN106607474B CN106607474B CN201510703271.8A CN201510703271A CN106607474B CN 106607474 B CN106607474 B CN 106607474B CN 201510703271 A CN201510703271 A CN 201510703271A CN 106607474 B CN106607474 B CN 106607474B
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- steel plate
- way
- roller
- cooling
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Classifications
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- 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)
- Straightening Metal Sheet-Like Bodies (AREA)
- Control Of Heat Treatment Processes (AREA)
Abstract
The invention discloses a kind of control methods swung for straightener front spring, include the following steps：Step 1, rolling line PLC tracks milling train and exports steel plate position；Step 2, judge whether cooling PLC system receives the steel plate cooling information that host computer issues；Step 3, cooling PLC functions start；Step 4, rolling line PLC tracks steel plate position；Step 5, before steel plate is delivered to pre-straightening machine；Step 6, judge whether rolling line PLC issues and swing instruction before pre-straightening machine；Step 7, steel plate is swung；Step 8, judge whether steel plate terminates to swing；Step 9, steel plate pre-straightening；Step 10, steel plate cools down；Step 11, steel plates straightening.The control method of the present invention swung for straightener front spring is under conditions of meeting production technology, it can be ensured that the correctness of steel plate position tracking avoids the generation of steel plate cooling signal exception.
Description
Technical field
The present invention relates to Wide and Thick Slab steel rolling region automation control methods, and straightener is used for more specifically to one kind
The control method that front spring is swung.
Background technology
On steel steel rolling mill production line, the upper next procedure logistics close coordination cooperation in actual production is to improve rolling
Rhythm of production increases the important link of production capacity.
As shown in Figure 1, the entire producing line of slab is divided into rolling line and finishing area, the capital equipment in rolling line region has step-by-step movement to add
Hot stove 1, De-scaling box 2, roughing mill 3, finishing mill 4, the accelerated cooling device 5 with direct quenching function, with roll-bending device
Strength pre-straightening machine 6, thermal straightening machine 7 etc..
In order to further increase rolling line region plate speed, upper and lower process efficiently cooperates with, and in actual production, works as thermal straightening machine
When being in steel plates straightening, the steel plate that latter piece of rolling is completed is fed rapidly into next process by rolling line roller-way, starts steel plate
Pre-straightening, but live fast pace Rolling Production, also bring along new problem.It is rectified whenever previous block of steel plate does not leave cooling or heat
When straight machine, next piece of steel plate needs are swung before pre-straightening machine, the order for waiting for next process to allow access into.
However, in existing rolling line tracing control, it, can when needing cooling steel plate to swing overlong time before pre-straightening machine
Steel plate cooling process can be caused to open cooling procedure error in advance.Primary exception, which often occurs, can cause current and next steel plate cold
Abnormal, it eventually leads to several blocks of steel plates and sentences and useless be reduced to substandard products.Direct losses have hundreds of thousands member to differ.
Due to steel plate logistics rhythm, in actual production, some steel plate needs are swung before pre-straightening machine,
As indicated by the arrows of fig. 2, the instruction run into steel is waited for.
As shown in figure 3, from the point of view of existing automatically control, steel plate is before pre-straightening machine, rolling line PLC and the positions cooling PLC
Tracking exports roller table speed to realize with milling train.But when needing cooling steel plate to be swung more than 10s before de-distortion, steel plate position
It sets tracking and is switched to rolling line PLC to track.Simultaneously because milling train outlet roller table speed is asynchronous with cooled region roller table speed,
Position tracking error can occur when swing, practical steel plate position is still before de-distortion.But steel plate image and practical steel plate are inconsistent
Phenomenon may result in position tracking cumulative errors for a long time, occur cooling abnormal.
When the steel plate on-line cooling of cooled region does not complete, simultaneously because rolling rhythm is accelerated, however work as next block of steel
When plate enters mill milling, rolling line tracking at this time is switched to the tracking that next block of steel plate (is rolling) position, i.e., steel plate is cold
But region rolling line PLC position trackings are switched to the position of milling train outlet.
The judgement control logic that steel plate cooling terminates again, which is steel plate tail position tracking, will leave cooled region outlet port.
So cooling tracking is caused to calculate mistake, do not completed when front spring cools down information, and cooling completion is early completed in practical steel plate.By
Occupied in lastblock steel plate cooling information, causes next piece cooling sheet steel sections condition is needed to be unsatisfactory for, can not execute cold
But.Cause production is abnormal to be directly judged to steel scrap processing.
Invention content
The problem of caused steel plate cooling signal exception when being swung for straightener front spring existing in the prior art, this
The purpose of invention is to provide a kind of control method swung for straightener front spring.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of control method swung for straightener front spring, includes the following steps：Step 1, rolling line PLC tracks milling train
Export steel plate position；Step 2, judge whether cooling PLC system receives the steel plate cooling information that host computer issues；Step 3, cold
But PLC functions start；Step 4, rolling line PLC tracks steel plate position；Step 5, before steel plate is delivered to pre-straightening machine；Step 6, judge
Whether rolling line PLC issues swings instruction before pre-straightening machine；Step 7, steel plate is swung；Step 8, judge whether steel plate terminates to put
It is dynamic；Step 9, steel plate pre-straightening；Step 10, steel plate cools down；Step 11, steel plates straightening.
An embodiment according to the present invention, the judgement for step 2：If it is not, being handled according to rolling line PLC position tracking functions
Carry out the non-cooled process production in lower road；If so, entering step 3.
An embodiment according to the present invention, the judgement for step 6：If so, entering step 7；If it is not, then entering step
9。
An embodiment according to the present invention, step 7 further include：Step 7.1, start cooling PLC position trackings and rolling line PLC
Track steel plate position；Step 7.2, judge whether steel plate head tracing positional is more than HMD physical locations.
An embodiment according to the present invention, the judgement for step 7.2：If so, steel plate swing backward；If it is not, then steel
Plate is swung forward.
An embodiment according to the present invention, the judgement for step 8：If so, entering step 9；If it is not, then return to step
7。
In the above-mentioned technical solutions, the control method swung for straightener front spring of the invention is meeting production technology
Under conditions of, it can be ensured that the correctness of steel plate position tracking avoids the generation of steel plate cooling signal exception.
Description of the drawings
Fig. 1 is rolling line region technology arrangement schematic diagram；
Fig. 2 is swing schematic diagram of the steel plate of rolling completion before pre-straightening machine；
Fig. 3 is existing automatic tracking control method flow chart；
Fig. 4 is the control method flow chart of the present invention swung for straightener front spring；
Fig. 5 is that milling train is exported to the specific arrangement schematic diagram of steel plate cooled region roller-way in the present invention；
Fig. 6 is swing Position Tracking Control logical schematic before light plate pre-straightening machine of the present invention.
Specific implementation mode
The technical solution further illustrated the present invention 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 meeting production technology, devises a kind of new
Steel plate swing position tracing control logic, it is ensured that steel plate position tracking correctness, avoid the generation of the above problem.Such as Fig. 4
Shown, the present invention may be summarized to be following each step：
S1, rolling line PLC tracking milling trains export steel plate position；
S2, judges whether cooling PLC system receives the steel plate cooling information that host computer issues.If it is not, according to rolling line PLC
Position tracking function processing carries out the non-cooled process production in lower road；If so, into S3.
S3, cooling PLC functions start；
S4, rolling line PLC track steel plate position；
S5, before steel plate is delivered to pre-straightening machine；
S6 judges whether rolling line PLC issues and swings instruction before pre-straightening machine.If so, into S7；If it is not, then entering
S9。
S7, steel plate are swung.Wherein the step further comprises：
S7.1, starts cooling PLC position trackings and rolling line PLC tracks steel plate position；
S7.2, judges whether steel plate head tracing positional is more than HMD physical locations.If so, steel plate swing backward；If
No, then steel plate is swung forward.
S8, judges whether steel plate terminates to swing.If so, into S9；If it is not, then returning to S7.
S9, steel plate pre-straightening；
S10, steel plate cooling；
S11, steel plates straightening.
Above-mentioned steps, which optimize, needs cooling steel plate in pre-straightening forward swing steel problem, and control method of the invention is to use
Milling train muzzle velocity replaces the speed of cooled region, does not use rolling line and cooling PLC position tracking handoff functionalities, complete in pendulum steel
At rear recovery.Even if when putting steel steel plate head run to can be calculated according to pendulum steel if the cooling PLC tracking of cooled region calculates with
Track changes.
As shown in figure 5, milling train is exported between steel plate cooled region, it is sequentially arranged FX1 groups roller-way, FX2 groups roller-way, FX3
Group roller-way, FX4 groups roller-way, FX5 groups roller-way, AC1 groups roller-way, AC2 group roller-ways, wherein a-quadrant part is that milling train exports roller-way area
Domain, B area part are cooled region roller-way.
Position Tracking Control logic is swung before light plate de-distortion of the present invention as shown in fig. 6, steel plate " pendulum steel " before pre-straightening
When, the judgement of FX5 and AC1 roller table speeds is carried out first.Secondly, when positioned at velocity process module 9, according to steel plate position end to end
Position is started over corresponding roller-way to calculate steel plate actual speed.Replace cooled region AC1 fast with the speed of FX5 before de-distortion
Degree, so cooling PLC tracking computation model 10 can also calculate tracking variation according to pendulum steel.Tracking accuracy is improved, is avoided
Exception is cooled down caused by due to position tracking malfunctions.
Control technology power electrical equipment of the present invention and detection use following scheme：
1. rolling line roller-way is driven by variable-frequency motor；
2. position, which calculates, to be realized using PLC controller；
3. steel plate position detection is realized using hot metal detector 8 shown in Fig. 2, tracing positional is using specific
Position is realized by corresponding group of roller table speed roller diameter integral of selection on roller-way where steel plate.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (1)
1. a kind of control method swung for straightener front spring, which is characterized in that the control method is exported to for milling train
Between steel plate cooled region, be sequentially arranged FX1 groups roller-way, FX2 groups roller-way, FX3 groups roller-way, FX4 groups roller-way, FX5 groups roller-way,
AC1 groups roller-way, AC2 group roller-ways, wherein FX1 groups roller-way, FX2 groups roller-way, FX3 groups roller-way, FX4 groups roller-way, FX5 group roller-ways are in A
Region, AC1 groups roller-way, AC2 groups roller-way are in B area, and a-quadrant part is that milling train exports roller-way region, and B area part is cooling zone
Domain roller-way；When steel plate is swung before pre-straightening, the judgement of FX5 groups roller-way and AC1 group roller table speeds is carried out first and secondly works as position
When velocity process module, according to steel plate, position and corresponding roller-way start over position and calculate steel plate actual speed end to end, use
The speed of FX5 groups roller-way replaces the speed of cooled region AC1 group roller-ways before de-distortion, and cooling PLC tracking computation models are according to pendulum steel
Calculate tracking variation；Specifically include following steps：
Step 1, rolling line PLC tracks milling train and exports steel plate position；
Step 2, judge whether cooling PLC system receives the steel plate cooling information that host computer issues；If it is not, according to rolling line PLC
Position tracking function processing carries out the non-cooled process production in lower road；If so, entering step 3；
Step 3, cooling PLC functions start；
Step 4, rolling line PLC tracks steel plate position；
Step 5, before steel plate is delivered to pre-straightening machine；
Step 6, judge whether rolling line PLC issues and swing instruction before pre-straightening machine；If so, entering step 7；If it is not, then into
Enter step 9；
Step 7, steel plate is swung, including：
Step 7.1, start cooling PLC position trackings and rolling line PLC tracks steel plate position；
Step 7.2, judge whether steel plate head tracing positional is more than HMD physical locations, if so, steel plate swing backward；If it is not,
Then steel plate is swung forward；
Step 8, judge whether steel plate terminates to swing；If so, entering step 9；If it is not, then return to step 7；
Step 9, steel plate pre-straightening；
Step 10, steel plate cools down；
Step 11, steel plates straightening.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN106607474A CN106607474A (en) | 2017-05-03 |
| CN106607474B true CN106607474B (en) | 2018-09-04 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Family Cites Families (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 |
| CN100493749C (en) * | 2005-12-27 | 2009-06-03 | 宝山钢铁股份有限公司 | Roughed plate bloom temperature control method in hot-rolled process |
| CN101912885B (en) * | 2010-08-11 | 2012-11-07 | 马鞍山钢铁股份有限公司 | Section mill with rolled piece end bending monitoring device and monitoring method thereof |
| CN102601123B (en) * | 2012-03-21 | 2014-04-02 | 莱芜钢铁集团有限公司 | Method for controlling swinging of medium and thick plate rolling steel plate roller way |
| CN103372573B (en) * | 2012-04-28 | 2015-12-09 | 宝山钢铁股份有限公司 | A kind of hot rolling slab is videoed amendable tracking and controlling method |
| CN103861877B (en) * | 2014-03-27 | 2015-09-23 | 东北大学 | A kind of heat treatment for medium plate stove steel plate position tracking control system and method |
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