CN106077106A - A kind of online decision method of hot-strip fold defect - Google Patents
A kind of online decision method of hot-strip fold defect Download PDFInfo
- Publication number
- CN106077106A CN106077106A CN201610450519.9A CN201610450519A CN106077106A CN 106077106 A CN106077106 A CN 106077106A CN 201610450519 A CN201610450519 A CN 201610450519A CN 106077106 A CN106077106 A CN 106077106A
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- China
- Prior art keywords
- pinch roll
- strip steel
- gap
- clamping force
- judge
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
-
- 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
- B21B1/26—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 hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses the online decision method of a kind of hot-strip fold defect, at strip steel through pinch roll, determine the actual gap of the top pinch roll in described pinch roll and bottom pinch roll；Then judge that whether described actual gap is more than setting gap；And judge that whether the clamping force to strip steel of described top pinch roll is more than setting clamping force；If described actual gap is more than described setting gap, and the clamping force to strip steel of described top pinch roll is more than setting clamping force, then show that described strip steel occurs in that fold defect, then records the position that strip steel occurs to fold.The method is easy, scientific and effective, can judge the most online, judge that the strip steel batched occurs in that fold defect, and production guarantee and the maintaining enterprise image product of artificial fold defect being failed to judge or misjudges, beneficially subsequent processing can be efficiently reduced.
Description
Technical field
The application relates to technical field of steel rolling, particularly relates to the online decision method of a kind of hot-strip fold defect.
Background technology
Hot rolling belt steel roll fold defect is a kind of common mass defect, and it will affect the most cold rolling normal of subsequent handling
Produce, be also simultaneously one of reason of occurring of products for export quality objection, the image of enterprise is produced the impact that can not estimate.Long
Since phase, the fold defect that strip steel occurs during batching is all to be judged by production exercise workmanship, leakage often occurs
The phenomenon sentenced or misjudge, fails to judge and produces serious influence cold rolling production or coil of strip export trade quality, and misjudgement will increase coil of strip
Uncoiling work, a large amount of uncoilings also operation smooth to coil of strip can cause production pressure.
Summary of the invention
In order to solve hot-strip fold defect against artificial judgment, cause the technical problem failed to judge or misjudge, the present invention
Provide the online decision method of a kind of hot-strip fold defect, it is possible to the online existence judging to arrive fold defect exactly,
Reduce the probability manually failed to judge or misjudge, the beneficially subsequent processing process to fold defect.
The invention provides the online decision method of a kind of hot-strip fold defect, described method includes:
When strip steel is through pinch roll, determine the actual gap of the top pinch roll in described pinch roll and bottom pinch roll；
Judge that whether described actual gap is more than setting gap；
Judge that whether the clamping force to strip steel of described top pinch roll is more than setting clamping force；
If described actual gap is more than described setting gap, and the clamping force to strip steel of described top pinch roll is more than setting
Clamping force, then show that described strip steel occurs in that fold defect, then records the position that strip steel occurs to fold.
Preferably, described when described strip steel is through described pinch roll, determine the top pinch roll in described pinch roll and under
The actual gap of pinch roll, particularly as follows:
Described actual roll gap is determined by the displacement transducer being arranged in the hydraulic cylinder controlling the lifting of described pinch roll.
Preferably, the clamping force of described top pinch roll is by the pressure transducer on the hydraulic cylinder being arranged on described top pinch roll
Detection obtains.
Preferably, described judge described actual gap whether more than setting gap, particularly as follows: judge that described actual gap is
No for 1 times of described setting gap and more than.
Preferably, whether the described clamping force to strip steel judging described top pinch roll is more than sets clamping force, particularly as follows:
Judge the clamping force to strip steel of described top pinch roll be whether 1.5 times of described setting clamping force and more than.
Preferably, the position of described folding is the point that folding the occurs distance to the head of described strip steel；Described distance from
Described strip steel nip described pinch roll time start to calculate, there is transporting velocity V × (roll over of the position L=strip steel of folding point
Folded time T1-strip steel head is through the time T2 of pinch roll).
By one or more technical scheme of the present invention, the invention have the advantages that or advantage:
In technical solution of the present invention, it is provided that the online decision method of a kind of hot-strip fold defect, at strip steel warp
When crossing pinch roll, determine the actual gap of the top pinch roll in described pinch roll and bottom pinch roll；Then described actual seam is judged
Whether gap is more than setting gap；And judge that whether the clamping force to strip steel of described top pinch roll is more than setting clamping force；If
Described actual gap is more than described setting gap, and the clamping force to strip steel of described top pinch roll is more than setting clamping force, then
Show that described strip steel occurs in that fold defect, then record the position that strip steel occurs to fold.The method is easy, scientific and effective,
Can judge the most online, judge that the strip steel batched occurs in that fold defect, and can efficiently reduce artificial
Fold defect is failed to judge or misjudges, beneficially the production guarantee of subsequent processing and maintaining enterprise image product.
Accompanying drawing explanation
Fig. 1 is the process chart that in the embodiment of the present invention, strip steel is advanced；
Fig. 2 is strip steel fold defect schematic diagram in the embodiment of the present invention；
Fig. 3 is the implementation process figure of the online decision method of a kind of hot-strip fold defect in the embodiment of the present invention.
Description of reference numerals: 1 strip steel, 2 rack of finishing mills, 3 rollgangs, 4 flipper guides,
5 pinch rolls, 6 reels.
Detailed description of the invention
In order to make the application the technical staff in the technical field be more clearly understood that the application, below in conjunction with the accompanying drawings,
By specific embodiment, technical scheme is described in detail.
The present invention provides the online decision method of a kind of hot-strip fold defect.
Seeing Fig. 1-Fig. 3, hot strip rolling process is: strip steel 1 arrives coiling machine from rack of finishing mill 2, rollgang 3
Pinch roll 5.Nipped by pinch roll 5 and be wrapped on coiler mandrel 6.
And the main implementation process of the present invention, then it is to judge when strip steel is through pinch roll 5, specifically:
S1, when strip steel is through pinch roll 5, determines the actual seam of the top pinch roll in described pinch roll 5 and bottom pinch roll
Gap.
S2, it is judged that whether described actual gap is more than setting gap.
S3, it is judged that whether the clamping force to strip steel of described top pinch roll is more than setting clamping force.
S4, if described actual gap is more than described setting gap, and the clamping force to strip steel of described top pinch roll is more than
Set clamping force, then show that described strip steel occurs in that fold defect, and record the position that strip steel occurs to fold.
In concrete implementation process, pinch roll 5 includes top pinch roll and bottom pinch roll, and top pinch roll and bottom pinch roll
Between gap be then the actual roll gap of pinch roll 5.
When strip steel 1 is through pinch roll 5, by being arranged on the displacement sensing in the hydraulic cylinder controlling the lifting of described pinch roll
Device determines this actual roll gap.Then judge that whether the actual roll gap of pinch roll 5 is more than setting roll gap.If the reality of pinch roll 5
Roll gap, more than setting 1 times of roll gap and above (folding see the strip steel at Fig. 2 pinch roll 5), judges that top pinch roll is to band the most again
Whether the clamping force of steel is more than setting clamping force.Certainly, in actual applications, if the actual roll gap of pinch roll 5 is more than setting roller
1.5 times of seam and more than, if or pinch roll 5 actual roll gap more than set 2 times of roll gap and more than, it is also possible to again judge
Whether the clamping force of strip steel is more than by top pinch roll sets clamping force.
Specifically, the clamping force of described top pinch roll (is such as arranged by being arranged on the hydraulic cylinder of described top pinch roll
On hydraulic cylinder two chamber) pressure transducer detection obtain.
When top pinch roll the clamping force of strip steel suddenlyd change set 1.5 times of clamping force and more than, then may determine that band
Steel 1 occurs in that fold defect, records fold defect information simultaneously.Fold defect information includes that strip steel occurs the position folded.
The position folded is the point that folding the occurs distance to strip steel head, and this distance starts to calculate when strip steel nips pinch roll 5, sends out
Transporting velocity V of the position L=strip steel of raw folding point × (occur the time T1-strip steel head time through pinch roll of folding
T2)。
Fold defect information is by Rolling Automation control system record and shows.The actual roll gap of pinch roll is by being arranged on control
Displacement transducer in the hydraulic cylinder of pinch roll processed lifting records, and sets roll gap and is sent by the Process Control System of hot rolling line
To Basic automation control system；The clamping force of pinch roll is by the pressure transducer inspection being arranged on top pinch roll hydraulic cylinder two chamber
Survey is calculated.
Specifically, the present invention sets out setting roll gap by the Process Control System of hot rolling line and sets clamping
Power, is then transferred to Basic automation control system.And when strip steel is by pinch roll 5, by being set in the liquid in pinch roll 5
The displacement transducer detection installed on cylinder pressure obtains actual roll gap, is obtained by the pressure transducer detection installed on hydraulic cylinder
The pinch roll clamping force to strip steel, is then transferred to Basic automation control system, real by Basic automation control system contrast
Border roll gap and set roll gap, and contrast top pinch roll to the clamping force of strip steel and sets clamping force, and then judge strip steel
All information of fold defect (are called for short fold defect information, the position etc. folded occur including strip steel simultaneously by fold defect
Deng) send Rolling Automation control system record to and show.Above procedure is all automatically performed on hot rolling line, no
Need the fold defect of artificial judgment strip steel.Rolling Automation control system then can be with real time record and show fold defect
Information.
By one or more embodiment of the present invention, the invention have the advantages that or advantage:
In embodiments of the present invention, it is provided that the online decision method of a kind of hot-strip fold defect, pass through at strip steel
During pinch roll, determine the actual gap of the top pinch roll in described pinch roll and bottom pinch roll；Then described actual gap is judged
Whether more than setting gap；And judge that whether the clamping force to strip steel of described top pinch roll is more than setting clamping force；If institute
State actual gap and be more than described setting gap, and the clamping force to strip steel of described top pinch roll is more than setting clamping force, then table
Bright described strip steel occurs in that fold defect, then records the position that strip steel occurs to fold.The method is easy, scientific and effective, energy
Enough judge the most online, judge that the strip steel batched occurs in that fold defect, and can efficiently reduce artificial right
The production guarantee of the failing to judge or misjudging of fold defect, beneficially subsequent processing and maintaining enterprise image product.
Although having been described for the preferred embodiment of the application, but one of ordinary skilled in the art once knowing substantially
Creative concept, then can make other change and amendment to these embodiments.So, claims are intended to be construed to bag
Include preferred embodiment and fall into all changes and the amendment of the application scope.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the application to the application
God and scope.So, if these amendments of the application and modification belong to the scope of the application claim and equivalent technologies thereof
Within, then the application is also intended to comprise these change and modification.
Claims (6)
1. the online decision method of a hot-strip fold defect, it is characterised in that described method includes:
When strip steel is through pinch roll, determine the actual gap of the top pinch roll in described pinch roll and bottom pinch roll；
Judge that whether described actual gap is more than setting gap；
Judge that whether the clamping force to strip steel of described top pinch roll is more than setting clamping force；
If described actual gap is more than described setting gap, and the clamping force to strip steel of described top pinch roll is more than setting clamping
Power, then show that described strip steel occurs in that fold defect, then records the position that strip steel occurs to fold.
2. the method for claim 1, it is characterised in that described when described strip steel is through described pinch roll, determines institute
State the actual gap of the top pinch roll in pinch roll and bottom pinch roll, particularly as follows:
Described actual roll gap is determined by the displacement transducer being arranged in the hydraulic cylinder controlling the lifting of described pinch roll.
3. the method for claim 1, it is characterised in that
The clamping force of described top pinch roll is detected by the pressure transducer on the hydraulic cylinder being arranged on described top pinch roll and obtains.
4. the method for claim 1, it is characterised in that described judge described actual gap whether more than setting gap,
Particularly as follows:
Judge described actual gap be whether 1 times of described setting gap and more than.
5. the method as described in claim 1 or 4, it is characterised in that the clamping to strip steel of the described top pinch roll of described judgement
Whether power is more than sets clamping force, particularly as follows:
Judge the clamping force to strip steel of described top pinch roll be whether 1.5 times of described setting clamping force and more than.
6. the method for claim 1, it is characterised in that
The position of described folding is the point that folding the occurs distance to the head of described strip steel；
Described distance started to calculate when described strip steel nips described pinch roll, and the conveying of the position L=strip steel of folding point occurs
Speed V × (there is the time T1-strip steel head time T2 through pinch roll of folding).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450519.9A CN106077106A (en) | 2016-06-21 | 2016-06-21 | A kind of online decision method of hot-strip fold defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450519.9A CN106077106A (en) | 2016-06-21 | 2016-06-21 | A kind of online decision method of hot-strip fold defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106077106A true CN106077106A (en) | 2016-11-09 |
Family
ID=57238545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610450519.9A Pending CN106077106A (en) | 2016-06-21 | 2016-06-21 | A kind of online decision method of hot-strip fold defect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106077106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404962A (en) * | 2019-06-26 | 2019-11-05 | 南京钢铁股份有限公司 | A kind of output strip line and its method for extending vertical pinch roller service life |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0780547A (en) * | 1993-09-17 | 1995-03-28 | Nisshin Steel Co Ltd | Method and device for detecting folding of sheet in sheet line |
| KR20020020343A (en) * | 2000-09-08 | 2002-03-15 | 이구택 | Automatic detecting system of folded strip head part |
| JP4396340B2 (en) * | 2004-03-18 | 2010-01-13 | Ｊｆｅスチール株式会社 | Method for detecting defects in steel sheet in rolling line |
| CN201389578Y (en) * | 2009-05-10 | 2010-01-27 | 山西太钢不锈钢股份有限公司 | Coil box tail decoiling device |
| US20100219964A1 (en) * | 2005-08-05 | 2010-09-02 | Hunt Kevin G | Method and System for Detecting Faults in Sheet Material |
| CN104772345A (en) * | 2014-01-13 | 2015-07-15 | 宝山钢铁股份有限公司 | Automatic head and tail residue monitoring method of hot rolling strip steel |
-
2016
- 2016-06-21 CN CN201610450519.9A patent/CN106077106A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0780547A (en) * | 1993-09-17 | 1995-03-28 | Nisshin Steel Co Ltd | Method and device for detecting folding of sheet in sheet line |
| KR20020020343A (en) * | 2000-09-08 | 2002-03-15 | 이구택 | Automatic detecting system of folded strip head part |
| JP4396340B2 (en) * | 2004-03-18 | 2010-01-13 | Ｊｆｅスチール株式会社 | Method for detecting defects in steel sheet in rolling line |
| US20100219964A1 (en) * | 2005-08-05 | 2010-09-02 | Hunt Kevin G | Method and System for Detecting Faults in Sheet Material |
| CN201389578Y (en) * | 2009-05-10 | 2010-01-27 | 山西太钢不锈钢股份有限公司 | Coil box tail decoiling device |
| CN104772345A (en) * | 2014-01-13 | 2015-07-15 | 宝山钢铁股份有限公司 | Automatic head and tail residue monitoring method of hot rolling strip steel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404962A (en) * | 2019-06-26 | 2019-11-05 | 南京钢铁股份有限公司 | A kind of output strip line and its method for extending vertical pinch roller service life |
| CN110404962B (en) * | 2019-06-26 | 2020-10-27 | 南京钢铁股份有限公司 | Strip steel production line and method for prolonging service life of vertical pinch roll |
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| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |
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| RJ01 | Rejection of invention patent application after publication |