CN105728468B - The method for controlling the final band outlet of finishing mill - Google Patents
The method for controlling the final band outlet of finishing mill Download PDFInfo
- Publication number
- CN105728468B CN105728468B CN201510994111.3A CN201510994111A CN105728468B CN 105728468 B CN105728468 B CN 105728468B CN 201510994111 A CN201510994111 A CN 201510994111A CN 105728468 B CN105728468 B CN 105728468B
- Authority
- CN
- China
- Prior art keywords
- band
- frame
- end section
- finishing mill
- mill
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
-
- 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
- B21B33/00—Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls for handling cobbles; Overload safety devices
-
- 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
- B21B37/46—Roll speed or drive motor control
-
- 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
- B21B2037/002—Mass flow control
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The present invention provides a kind of method for the final band outlet for controlling finishing mill, it is included in the final band export events of the end section of band before the generation of next stage frame, increases the roll seams of multiple frames successively by the traffic direction along band immediately to increase the rolling thickness of the end section of band.Methods described is by preventing recurrent sheet distortion when by the end section of thin material and burning sheet-adhesion, roll accident and mass defect can be prevented, and therefore reduces wrong possibility caused by the batten occurred during the irregular replacement of work roll changes.
Description
The cross reference of related application
The korean patent application 10-2014- submitted this application claims on December 26th, 2014 to Korean Intellectual Property Office
The priority of No. 0190236, it is incorporated by this by reference.
Background technology
The field of the invention
The present invention relates to the method for the final band outlet (output of band metal) of control (managing) finishing mill, have more
For body, it is related in close-coupled endless casting rolling machine (Compact Endless cast-rolling Mill, CEM) technique
The method of the final band outlet of middle control finishing mill, wherein continuous casting process and rolling mill practice is joined directly together, for adopting
With endless rolling roll in batch technique of thin material that stably mill product is rolled up.
The description of related art
Related art milling method has limitation in the milling train for rolling thin material, and thing is exported in final band
In part, band may not be perfectly straight movement, but may be moved with meandering manner, therefore, it may occur that band distort and
The burnt parts of band are adhered on roll.Therefore operation may be made to stop or may occur roller rupture, caused under productivity
Drop and manufacturing cost increase.
Specifically, it will be used for may having office in endless rolling technique with low wearability and the high work roll for turning round resistance
It is sex-limited, therefore because the abrasion of work roll causes to reduce available for the quantity of the endless rolling sheet material of rolling.
Prior art literature
(patent document 1) Korean Patent Application Publication No.10-1999-0059961.
The content of the invention
An aspect of of the present present invention provides a kind of method for the final band outlet for controlling finishing mill, and methods described is used for tight
Gather in formula endless casting rolling machine (CEM) technique, wherein continuous casting process and rolling mill practice is joined directly together, for using nothing
Head rolling roll in batch technique of thin material that stably mill product is rolled up.
Another aspect provides a kind of method of the final band outlet of control finishing mill, to make in finished product
Thickness on the steel band defect part that is inevitably resulted in due to quick increase rolling thickness minimize.
According to an aspect of the invention, there is provided a kind of method of the final band outlet of control finishing mill, the side
The final band export events that method is included in the end section of band are sent out in next stage frame (following-stage stand)
Before life, increase the roll seams of multiple frames successively by the traffic direction along band immediately to increase the tail end of band
The rolling thickness divided.
According to another aspect of the present invention, when the final band export events of the end section of band occur, can count
The setting value for changing rolling thickness is calculated, according to the setting value, can adjust the mill speed of each frame.
According to another aspect of the present invention, the mill speed of each frame can individually be controlled.
Brief description of the drawings
By following detailed description combination accompanying drawing, the above-mentioned of the present invention and other aspects, spy will be more clearly understood from
Seek peace other advantages, wherein：
Fig. 1-4 is the schematic diagram for illustrating the final rolling mill practice in band operation order according to embodiment of the present invention.
Embodiment
Below, according to embodiment of the present invention, refer to the attached drawing, will describe for being directly connected to continuously casting and rolling
The method that band metal exports in the finishing mill of technique.
However, the design of the present invention can illustration, and should not be construed as limited to set forth herein in a number of different manners
Particular.Certainly, there is provided these embodiments, to make present disclosure more comprehensively and completely, to art technology
Personnel fully pass on scope of the present disclosure.
Throughout this specification, it should be understood that when element such as layer, region or chip (substrate) are referred to as another
Element " on ", " being connected to " or during " being coupled to " another element, it can directly another element " on ", " being connected to " or
" being coupled to " another element, or can be presented as that other elements are interposed therebetween.On the contrary, when element be referred to as " directly existing ", " directly
Be connected to " or during " being directly coupled to " another element, may no element or layer be interposed therebetween.Similar label represents herein
Similar element.As it is used herein, term "and/or" includes the one or more any and all of related Listed Items
Combination.
Obviously, although term first, second, third, etc. can be used to describe various components, component, region, layer herein
And/or part, but these components, component, region, layer and/or part should not be limited by these terms.These terms are only used for
One component, component, region, layer or part and another region, layer or partial differentiation.Therefore, the first structure discussed below
Part, component, region, layer or part are referred to alternatively as second component, component, region, layer or part, without departing from exemplary embodiment party
The teaching of case.
Space relative terms " top ", " top ", " lower section " and " bottom " etc., can be herein for ease of description
For describing the relation of an element and another (multiple) element, as shown in the figure.It should be understood that except the orientation described in accompanying drawing
Outside, space relative terms are intended to be also contemplated by the different orientation of device in use or operation.If for example, device quilt in figure
Upset, be described as be in the element on other elements " top " or " top " then by be positioned in other elements or part " under
Side " or " bottom ".Therefore, term " top " can cover two kinds of orientations above and below specific direction with reference to the accompanying drawings.Institute
State device (can be rotated by 90 ° or in other orientations) by other positioning, and can correspondingly explain that space used herein is relative and retouch
Predicate.
Term used herein is only used for describing specific embodiment, and is not intended to the design of the limitation present invention.As herein
Used, unless the context clearly indicates otherwise, singulative " one (a) ", " one (an) " and " described " are intended to also include plural number
Form.It will be further understood that when term " including (comprises) " and/or " including (comprising) " are in this specification
In in use, specifying described feature, integer, step, operation, component, element and/or their group be present, but be not excluded for depositing
Or other additional one or more features, integer, step, operation, component, element and/or their groups.
Hereinafter, by the schematic diagram for the embodiment conceived described with reference to the invention, the invention structure is illustrated
The embodiment of think of.In the accompanying drawings, for example, due to manufacturing technology and/or tolerance, the modification of shown shape is estimable.Cause
This, the embodiment of the invention design should not be construed as limited to the given shape of regions illustrated herein, such as unlimited
In including caused change in shape in the mill.Embodiments below can be also made up of one or combinations thereof.
The content of the following description of the present invention inventive concept can have various configurations, and it is only the configuration required by this paper
And propose, but it is not limited to this.
Reference picture 1-4, finishing mill includes the first to the 5th frame 1-5, and band supplies from the first frame 1 to the 5th frame 5
Give, and continuously export.
In the present embodiment, although describing five frames, the invention is not restricted to this, the quantity of frame can be four
It is individual or less, or can be six or more.
Herein, band 100 can undergo the technique from the surface scale removal of band first before finish rolling, by first
The upstream installation finish rolling descaling mill (finishing mill scale breaker, FSB) 30 of frame 1 is realized.
Moreover, crop shear 40 can be installed in the upstream of oxide skin disintegrating machine 30 with cut off the front end of band 100 and
End section.
In addition, the straightener 10 of the smoothness for correcting band 100 can be arranged on the upstream of crop shear 40.
In this embodiment, the controller of finishing mill includes the process control system (PCS) in 2 grades of regions, and 1 grade of area
The programmable logic controller (PLC) (PLC) in domain.
Rolling result information based on real-time collecting, PCS calculate the output end thickness of each frame in finishing mill, and have
Calculate and set roll seam, mill speed, rolling load, drafts percentage (draft percentage), advancing slip, frame
Speed rheostat (SSRH), ramp time, automated location control the functions such as the requirement of (APC).
APC means that the position of equipment is carried out by the setting value for being used for device in the host computer in factory automation stage
Control, and in the present embodiment, it is meant that the position of finishing mill is by set value calculation.
In addition, APC requirement means that reference fractional signal time is sent.
SSRH is it is meant that in the finishing mill as tandem mill, and in order to balance the mass flow of rolling stock, institute is organic
The speed of frame is uncontrolled when by synchronization, and the speed of each frame is individually controlled.
I.e., in the present embodiment, due to be in each frame 1-5 of same time point mass flow it is different from each other, because
This should individually control the speed of each frame, to keep tension force predetermined between frame, it means that as carrying out successively
Control.
PLC function is to provide from the information of the 2nd grade of reception to milling train in reasonable time and referred to for APC.
The finishing mill of the present embodiment configured as described above is by the following method in the continuously casting rolling being directly connected to
Operated in technique.
When disconnected event occurs in mill inlet temperature (FET) thermometer 50, the finishing mill of the present embodiment, such as scheme
Shown in 1, the information about the roll seam of each frame, mill speed and rolling load in the first to the 5th frame 1-5 is collected,
And the current output end thickness of the first to the 5th frame 1-5 each frame is calculated based on collected information.
Here, FET thermometers 50 also have the position of the detection end section of band 100 and the function of measurement temperature.
Then, the thickness based on calculating, the target that need to change thickness is calculated for the first to the 5th frame 1-5 each frame
Degree, rolling setting value (roll seam, mill speed, reduction ratio (draft that thickness changes to be used for during then calculating rolling
Percentages it is), advancing slip) and setting value (SSRH, ramp time, required APC quantity), it is sent to PLC.
Next, as shown in Fig. 2 when final band export events occur in the second frame 2, PLC is in slope staring position
P1 performs APC, and the setting value of the thickness for change is changed into the roll seam by receiving the frame 3 of setting value the 3rd,
And in the same time, the SSRH of change is applied to mill speed (B1).Now, the speed of the second frame 2 is individually controlled so that
The speed increase of only the second frame 2, with the tension force being maintained between the second frame 2 and the 3rd frame 3.
The reason for carrying out this control is because of when tension force drastically changes, due to the linear motion of material in milling train
Reduction causes material width to reduce, and in severe cases, it may occur however that rupture.
Next, as shown in figure 3, the 3rd frame 3 is carried out at slope staring position (ramp starting point) P2
APC, when slope staring position P2 reaches four frames 4, PLC performs APC so that use is changed into the roll seam of the 4th frame 4
In the setting value of the thickness (A2) of change, meanwhile, the SSRH after change is applied to the mill speed (B2) of the 4th frame.In addition,
Individually perform APC so that change to keep the SSRH of the tension force between the 3rd frame 3 and the 4th frame 4 to be applied to the 3rd frame 3
Mill speed B1.
Next, as shown in figure 4, the 4th frame 4 is carried out at slope staring position (ramp starting point) P3
APC, when slope staring position P3 reaches five frames 5, PLC performs APC so that use is changed into the roll seam of the 5th frame 5
In the setting value of the thickness (A3) of change, meanwhile, the SSRH after change is applied to the mill speed (B3) of the 5th frame 5.In addition,
Individually perform APC so that change to keep the SSRH of the tension force related to the 5th frame 5 to be applied to the 3rd frame 3 and the 4th machine
The mill speed B1 and B2 of frame 4.
In the present embodiment, all APC can be carried out separately repeatedly step by step, and APC required number is set by setting value
Amount.
That is, the 1st grade of PLC is sent for operating the motor of finishing mill or the reference signal of cylinder.Here, these are grasped
It is not to carry out but perform respectively for several times at once, this is suitable.The institute that reference signal is defined as APC for several times is sent respectively
Need quantity.
Disperse to send reference signal purpose for several times respectively be, by same time point each frame operating time
Under similarly matched beginning and end come individually control speed to keep the tension force between frame because the first to the 5th frame 1-5
APC quantity be different from each other, and in this way to match the mass flow between frame different from each other.
In addition, reference 21,23,25 and 27 represents that mass flow is put down between being used to control the first to the 5th frame 1-5
The kink of weighing apparatus, and reference 22,24,26 and 28 represents the loop back roll installed in kink end.
According to above-mentioned embodiment, compared with thin material, the labyrinth movement degree of thick material significantly reduces, by using
This physical property, exported in the metal of the end section of band before the next stage frame of finishing mill occurs, immediately with fast
The increased rolling thickness rolled strip of speed, so as to by stablizing mass flow and increase rolling thickness between frame, there is provided
It is a kind of to avoid band from distorting and ensure the method for handling capacity.
According to embodiment of the present invention, by preventing that recurrent band distorts when by the end section of thin material
Adhered to band is burnt, can effectively prevent roll accident and mass defect, and therefore reduce due in the irregular of work roll
Replace possibility wrong caused by caused batten in changing.
Although had been shown with reference to exemplary and describe the present invention, in without departing substantially from appended claims
It can modify and change in the scope of the present invention of restriction, this will be readily apparent to one having ordinary skill.
Claims (1)
1. a kind of method of the final band outlet of control finishing mill, methods described are included in the end section of the band most
Whole band export events are increased successively by the traffic direction along band and ramp time immediately before the generation of next stage frame
Add the roll seam of a frame and increase the rolling thickness of the end section of the band,
Wherein when the final band export events of the end section of the band occur, calculate for changing setting for rolling thickness
Definite value, and according to the setting value, be divided into more than the 2 times mill speeds for individually adjusting each frame, the purpose is to by
Similarly matched beginning and end under the operating time of each frame of same time point keeps the tension force between each frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0190236 | 2014-12-26 | ||
| KR1020140190236A KR101674773B1 (en) | 2014-12-26 | 2014-12-26 | Method of strip metal out in finishing mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105728468A CN105728468A (en) | 2016-07-06 |
| CN105728468B true CN105728468B (en) | 2018-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510994111.3A Expired - Fee Related CN105728468B (en) | 2014-12-26 | 2015-12-25 | The method for controlling the final band outlet of finishing mill |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101674773B1 (en) |
| CN (1) | CN105728468B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202000000316A1 (en) * | 2020-01-10 | 2021-07-10 | Danieli Off Mecc | METHOD AND APPARATUS FOR THE PRODUCTION OF FLAT METALLIC PRODUCTS |
| CN113500102B (en) * | 2021-07-07 | 2023-06-23 | 中铝瑞闽股份有限公司 | Rolling method for reducing deviation rolling leakage of aluminum hot finish rolling belt tail |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3270723B2 (en) * | 1996-12-02 | 2002-04-02 | 株式会社日立製作所 | Strip control method and rolling control system for tandem rolling mill |
| JP3879239B2 (en) * | 1998-03-24 | 2007-02-07 | Ｊｆｅスチール株式会社 | Crown control method |
| KR20010060418A (en) | 1999-12-21 | 2001-07-07 | 이구택 | A method for manufacturing grain oriented electrical steel sheet using thin hot coil |
| JP2002096109A (en) * | 2000-09-14 | 2002-04-02 | Nippon Steel Corp | Method for restraining meandering of material to be rolled |
| DE102007058709A1 (en) * | 2007-08-04 | 2009-02-05 | Sms Demag Ag | Method for producing a strip of steel |
| CN104226693B (en) * | 2014-08-28 | 2016-03-02 | 首钢总公司 | Reduce the production method of cold-rolled process non-weld seam broken belt incidence |
-
2014
- 2014-12-26 KR KR1020140190236A patent/KR101674773B1/en active IP Right Grant
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- 2015-12-25 CN CN201510994111.3A patent/CN105728468B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR101674773B1 (en) | 2016-11-10 |
| KR20160079947A (en) | 2016-07-07 |
| CN105728468A (en) | 2016-07-06 |
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Granted publication date: 20180302 Termination date: 20201225 |