CN107891065A - A kind of method for preventing Thin Strip Steel from opening car broken belt - Google Patents
A kind of method for preventing Thin Strip Steel from opening car broken belt Download PDFInfo
- Publication number
- CN107891065A CN107891065A CN201710998673.4A CN201710998673A CN107891065A CN 107891065 A CN107891065 A CN 107891065A CN 201710998673 A CN201710998673 A CN 201710998673A CN 107891065 A CN107891065 A CN 107891065A
- Authority
- CN
- China
- Prior art keywords
- roll
- force
- tandem mills
- frames
- car
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
Abstract
The invention discloses a kind of method for preventing Thin Strip Steel from opening car broken belt, and applied to tandem mills, the roll-force of tandem mills is used as memory roll-force when being stopped by gathering tandem mills；Then completed in tandem mills roll change and each roll gap is in the state of opening and determines to open current coiling tension corresponding to car；Wherein, current coiling tension is set coiling tension 1.5 3 times, and then can eliminate rising for milling train section and cover phenomenon.It is additionally based on memory roll-force and determines that each frame of tandem mills opens currently practical roll-force corresponding to car, and controls each frame of tandem mills to open currently practical roll-force corresponding to car according to each frame and depress；Wherein, the 1# frames of tandem mills, 2# frames, 3# frames, the currently practical roll-force of 4# frames are 90% the 95% of memory roll-force, can prevent excessive roll-force from breaking strip, and so as to avoid occurring milling train broken belt, control tandem mills open car.
Description
Technical field
The application is related to cold continuous rolling technical field, more particularly to a kind of method for preventing Thin Strip Steel from opening car broken belt.
Background technology
In tandem mills production process, roll change is the daily content of one of which, and produces Thin Strip Steel easily after roll change
Open the accident of car broken belt.Just open the car operation of rolling and belong to unstable state, and various factors and the most violent rank of Parameters variation
Section, opens between vehicle device frame that to play set, broken belt caused by shape wave and tension force deficiency particularly problematic every time, and it is thin particularly to meet some
Specification strip steel (thickness is less than 0.6mm), broken belt accident easily occurs.Broken belt not only causes parking to influence production, and to becoming a useful person
Rate also has extreme influence.
The content of the invention
Invention provides a kind of method for preventing Thin Strip Steel from opening car broken belt, can solve or part solution is opened car and broken
The technical problem of band, production efficiency is improved, reduces agreement product or waste product, avoid resolving car parking influence yield and derivative matter
Amount problem.
In order to solve the above technical problems, the invention provides a kind of method for preventing Thin Strip Steel from opening car broken belt, methods described
Applied to tandem mills, methods described includes：The roll-force of tandem mills when gathering the tandem mills parking
As memory roll-force；Completed in the tandem mills roll change and each roll gap is in the state of opening, according to the strip
Setting coiling tension determines to open current coiling tension corresponding to car corresponding to steel；Wherein, the current coiling tension is described
Set 1.5-3 times of coiling tension；Determine that each frame of tandem mills opens based on the memory roll-force corresponding to car to work as
Preceding actual roll-force, and control each frame of the tandem mills to open currently practical rolling corresponding to car according to each frame and force
Under；Wherein, the 1# frames of the tandem mills, 2# frames, 3# frames, the currently practical roll-force of 4# frames are the memory
The 90%-95% of roll-force；The tandem mills are controlled to open car.
Preferably, the coiling tension is set coiling tension 2 times.
Preferably, control each frame of tandem mills opens currently practical roll-force corresponding to car according to each frame
After pressure, methods described also includes：The current coiling tension is controlled to recover to the setting coiling tension.
Preferably, it is described to determine that each frame of tandem mills opens current reality corresponding to car based on the memory roll-force
Border roll-force, including：Determine that the 1# frames of the tandem mills reduce 5% memory rolling based on the memory roll-force
Power；Determine that the 2# frames of the tandem mills reduce 5% memory roll-force based on the memory roll-force；Based on the note
Recall roll-force and determine that the 3# frames of the tandem mills reduce 10% memory roll-force；Determined based on the memory roll-force
The 4# frames for going out the tandem mills reduce 10% memory roll-force；The cold continuous rolling is determined based on the memory roll-force
The 5# frames of unit are depressed into the memory roll-force.
Preferably, the acceleration for controlling each frame of the tandem mills is 0.5m/s2, control the cold continuous rolling
The vehicle speed that rises of the 5# frames of group is 49m/min.
Preferably, the 5# frames for controlling the tandem mills rise after vehicle speed is 49m/min, methods described
Also include：Control the 5# frames of the tandem mills to play vehicle speed and be promoted to 95m/min.
By one or more technical scheme of the present invention, the invention has the advantages that or advantage：
It is cold by gathering applied to tandem mills the invention discloses a kind of method for preventing Thin Strip Steel from opening car broken belt
The roll-force of tandem mills is as memory roll-force when Continuous mill train stops；Then in tandem mills roll change completion and each roller
Seam determines to open current coiling tension corresponding to car in the state of opening, based on setting coiling tension；Wherein, currently batch
Tension force is set coiling tension 1.5-3 times, and then can eliminate rising for milling train section and cover phenomenon.It is true to be additionally based on memory roll-force
Each frame for making tandem mills opens currently practical roll-force corresponding to car, and controls each frame of tandem mills according to each machine
Frame opens currently practical roll-force pressure corresponding to car；Wherein, the 1# frames of tandem mills, 2# frames, 3# frames, 4# frames
Currently practical roll-force is the 90%-95% of memory roll-force, can prevent excessive roll-force from breaking strip, so as to avoid
Generation milling train broken belt.Finally control tandem mills open car.
Brief description of the drawings
Fig. 1 is a kind of implementation process figure of method for preventing Thin Strip Steel from opening car broken belt in the embodiment of the present invention.
Embodiment
In order that the application the technical staff in the technical field is more clearly understood that the application, below in conjunction with the accompanying drawings,
Technical scheme is described in detail by specific embodiment.
The invention discloses a kind of method for preventing Thin Strip Steel from opening car broken belt, methods described is applied to tandem mills.This
The thin gauge strip thickness of invention is less than 0.6mm.
The present invention mainly solves strip steel rolling broken belt when car is opened in tandem mills (namely five frame connection rolling machine) roll change
Problem.By digesting the operation of rolling and one-level control program of analysis tandem mills, respectively from operation and control further investigation
Problem present in the operation of rolling, predominantly opens car broken belt, has analyzed and the main reason for broken belt occurred, and proposition passes through reduction
The mode of memory roll-force opens car, and realizes that this method is applied successfully, and largely reduces tandem mills and opens car broken belt
Problem.The main implementation principle of the present invention is stored in parking moment collection memory roll-force, is opened Chinese herbaceous peony and is passed through PLC journeys
Sequence controls the coiling tension for establishing certain multiple, and opens providing for car roll-force, so as to avoid that the method for milling train broken belt occurs.
The present invention actually mainly includes：Remember the storage of roll-force, the setting of coiling tension multiple, open car roll-force
Provide etc..
It is a kind of implementation process figure of method for preventing Thin Strip Steel from opening car broken belt disclosed by the invention referring to Fig. 1, specific bag
Include：
Step 11, the roll-force of the tandem mills is as memory roll-force when gathering the tandem mills parking.
After memory roll-force is collected, roll change can store the roll-force of tandem mills now when stopping, and be
Roll-force is remembered, in case follow-up use.
Step 12, completed in the tandem mills roll change and each roll gap is in the state of opening, according to the strip
Setting coiling tension determines to open current coiling tension corresponding to car corresponding to steel；Wherein, the current coiling tension is described
Set 1.5-3 times of coiling tension.
For Thin Strip Steel, there is each self-corresponding setting coiling tension the different strip steel capital of every kind of specification, if opened
Che Shiyong sets coiling tension, then and when batching Thin Strip Steel, power can not enough cause Thin Strip Steel to fold set and then broken belt, so
The present invention will open the coiling tension to be used of car and be arranged to set 1.5-3 times of coiling tension, and then of elimination milling train section
Cover phenomenon.
As a kind of optional embodiment, coiling tension is 2 times of the setting coiling tension.
In specific implementation process, it is to utilize coiling machine and milling train forward pull roller after milling train, current batch is opened
Power is defined as 1.5-3 times of the setting coiling tension,
Step 13, determine that each frame of tandem mills opens currently practical corresponding to car roll based on the memory roll-force
Power processed, and control each frame of the tandem mills to open currently practical roll-force corresponding to car according to each frame and depress；Wherein, institute
1# frames, 2# frames, 3# frames, the currently practical roll-force of 4# frames for stating tandem mills are the memory roll-force
90%-95%.
In specific implementation process, it is corresponding to determine that each frame of tandem mills opens car based on the memory roll-force
Currently practical roll-force, including following steps, these steps do not have sequencing：
Determine that the 1# frames of the tandem mills reduce 5% memory roll-force based on the memory roll-force；
Determine that the 2# frames of the tandem mills reduce 5% memory roll-force based on the memory roll-force；
Determine that the 3# frames of the tandem mills reduce 10% memory roll-force based on the memory roll-force；
Determine that the 4# frames of the tandem mills reduce 10% memory roll-force based on the memory roll-force；
Determine that the 5# frames of the tandem mills are depressed into the memory roll-force based on the memory roll-force.
Open the 5-10% ratios that car roll-force reduces memory roll-force, that is to say, that open car roll-force as memory roll-force
90-95% ratios, it is therefore an objective to prevent excessive roll-force from breaking strip, so to prevent broken belt with control plate shape play product
The effect of pole.
Further, the present invention can also control each frame of the tandem mills to be opened according to each frame current real corresponding to car
Border roll-force pressure.As a kind of optional embodiment, the current coiling tension can be also controlled to recover to setting after this
Coiling tension.
Step 14, the tandem mills are controlled to open car.
In specific implementation process, each frame acceleration that can control the tandem mills is 0.5m/s2, control institute
The 5# frame vehicle speeds for stating tandem mills are 49m/min.By 5# frames after each frame tension force, thickness, plate shape are stable
Speed is carried to 95m/min, is progressively carried to high speed 600-1300m/min, specific speed root after 5# rack outlets thickness is stable
Depending on actual condition.
By one or more embodiment of the present invention, the invention has the advantages that or advantage：
It is cold by gathering applied to tandem mills the invention discloses a kind of method for preventing Thin Strip Steel from opening car broken belt
The roll-force of tandem mills is as memory roll-force when Continuous mill train stops；Then in tandem mills roll change completion and each roller
Seam determines to open current coiling tension corresponding to car in the state of opening, based on setting coiling tension；Wherein, currently batch
Tension force is set coiling tension 1.5-3 times, and then can eliminate rising for milling train section and cover phenomenon.It is true to be additionally based on memory roll-force
Each frame for making tandem mills opens currently practical roll-force corresponding to car, and controls each frame of tandem mills according to each machine
Frame opens currently practical roll-force pressure corresponding to car；Wherein, the 1# frames of tandem mills, 2# frames, 3# frames, 4# frames
Currently practical roll-force is the 90%-95% of memory roll-force, can prevent excessive roll-force from breaking strip, so as to avoid
Generation milling train broken belt.Finally control tandem mills open car.
Although having been described for the preferred embodiment of the application, one of ordinary skilled in the art once knows substantially
Creative concept, then other change and modification can be made to these embodiments.So appended claims are intended to be construed to wrap
Include preferred embodiment and fall into having altered and changing for the application scope.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the application to the application
God and scope.So, if these modifications and variations of the application belong to the scope of the application claim and its equivalent technologies
Within, then the application is also intended to comprising including these changes and modification.
Claims (6)
1. a kind of method for preventing Thin Strip Steel from opening car broken belt, methods described is applied to tandem mills, it is characterised in that the side
Method includes：
The roll-force of the tandem mills is as memory roll-force when gathering the tandem mills parking；
Completed in the tandem mills roll change and each roll gap is in the state of opening, the setting according to corresponding to the Thin Strip Steel
Coiling tension determines to open current coiling tension corresponding to car；Wherein, the current coiling tension is the setting coiling tension
1.5-3 times；
Determine that each frame of tandem mills opens currently practical roll-force corresponding to car based on the memory roll-force, and control
Each frame of tandem mills opens currently practical roll-force corresponding to car according to each frame and depressed；Wherein, the cold continuous rolling
1# frames, 2# frames, 3# frames, the currently practical roll-force of 4# frames of group are the 90%-95% for remembering roll-force；
The tandem mills are controlled to open car.
2. the method as described in claim 1, it is characterised in that the coiling tension is 2 times of the setting coiling tension.
3. the method as described in claim 1, it is characterised in that control each frame of tandem mills is according to each frame
After opening currently practical roll-force pressure corresponding to car, methods described also includes：
The current coiling tension is controlled to recover to the setting coiling tension.
4. the method as described in claim 1, it is characterised in that described that tandem mills are determined based on the memory roll-force
Each frame open currently practical roll-force corresponding to car, including：
Determine that the 1# frames of the tandem mills reduce 5% memory roll-force based on the memory roll-force；
Determine that the 2# frames of the tandem mills reduce 5% memory roll-force based on the memory roll-force；
Determine that the 3# frames of the tandem mills reduce 10% memory roll-force based on the memory roll-force；
Determine that the 4# frames of the tandem mills reduce 10% memory roll-force based on the memory roll-force；
Determine that the 5# frames of the tandem mills are depressed into the memory roll-force based on the memory roll-force.
5. the method as described in claim 1, it is characterised in that the control tandem mills open car, including：
The acceleration for controlling each frame of the tandem mills is 0.5m/s2, control the 5# frames of the tandem mills
It is 49m/min to play vehicle speed.
6. method as claimed in claim 5, it is characterised in that the 5# frames of the control tandem mills play speed
Spend for after 49m/min, methods described also includes：
Control the 5# frames of the tandem mills to play vehicle speed and be promoted to 95m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710998673.4A CN107891065B (en) | 2017-10-24 | 2017-10-24 | A method of prevent Thin Strip Steel from opening the disconnected band of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710998673.4A CN107891065B (en) | 2017-10-24 | 2017-10-24 | A method of prevent Thin Strip Steel from opening the disconnected band of vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107891065A true CN107891065A (en) | 2018-04-10 |
| CN107891065B CN107891065B (en) | 2019-06-07 |
Family
ID=61802899
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710998673.4A Active CN107891065B (en) | 2017-10-24 | 2017-10-24 | A method of prevent Thin Strip Steel from opening the disconnected band of vehicle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202009A (en) * | 2019-06-11 | 2019-09-06 | 首钢京唐钢铁联合有限责任公司 | A kind of milling train vehicle method for controlling thickness and device |
| CN110280596A (en) * | 2019-05-30 | 2019-09-27 | 邯郸钢铁集团有限责任公司 | A kind of cold rolling thin gauge strip is disconnected to open Che Fangfa with after |
| CN111036677A (en) * | 2019-12-30 | 2020-04-21 | 天津鞍钢天铁冷轧薄板有限公司 | Method for preventing thin strip steel from being broken when directly started |
| CN111346928A (en) * | 2020-03-04 | 2020-06-30 | 首钢京唐钢铁联合有限责任公司 | Start control method, device and medium for preventing strip steel from being broken under secondary pressing |
| CN113118211A (en) * | 2020-01-10 | 2021-07-16 | 晟通科技集团有限公司 | Finish rolling and rolling start method |
| CN113680827A (en) * | 2021-08-17 | 2021-11-23 | 北京首钢冷轧薄板有限公司 | Method for lifting cold-rolled thin high-reduction-rate high-strength steel after strip breakage |
| CN114309085A (en) * | 2021-12-30 | 2022-04-12 | 本钢板材股份有限公司 | Production process for optimizing high-strength steel finish rolling reduction rate distribution |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110280596A (en) * | 2019-05-30 | 2019-09-27 | 邯郸钢铁集团有限责任公司 | A kind of cold rolling thin gauge strip is disconnected to open Che Fangfa with after |
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| CN113118211A (en) * | 2020-01-10 | 2021-07-16 | 晟通科技集团有限公司 | Finish rolling and rolling start method |
| CN111346928A (en) * | 2020-03-04 | 2020-06-30 | 首钢京唐钢铁联合有限责任公司 | Start control method, device and medium for preventing strip steel from being broken under secondary pressing |
| CN113680827A (en) * | 2021-08-17 | 2021-11-23 | 北京首钢冷轧薄板有限公司 | Method for lifting cold-rolled thin high-reduction-rate high-strength steel after strip breakage |
| CN114309085A (en) * | 2021-12-30 | 2022-04-12 | 本钢板材股份有限公司 | Production process for optimizing high-strength steel finish rolling reduction rate distribution |
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