CN109248925A - A kind of solution for strangling roller defect - Google Patents
A kind of solution for strangling roller defect Download PDFInfo
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- CN109248925A CN109248925A CN201811264209.3A CN201811264209A CN109248925A CN 109248925 A CN109248925 A CN 109248925A CN 201811264209 A CN201811264209 A CN 201811264209A CN 109248925 A CN109248925 A CN 109248925A
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- rolling
- dynamic variable
- tension
- roller
- variable specification
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- 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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
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- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The present invention can be improved rolling stability, strict control format change, and refinement hot rolling stock roll transition rule criterion, it is specified that milling train exit thickness jumps can prevent the generation for strangling roll marks from source.Optimize milling train tension fluctuation, dynamic variable specification rolling model sets suitable tension value, function is normally put into during ensuring to become specification, and the Correlative Influence Factors such as formula, smooth transition design of Regulator, velocity transformation formula and influence dynamic variable specification control precision, which are optimized and improve, to be determined on the dynamic variable specification time in dynamic variable specification rolling procedure, keep rolling stability during dynamic variable specification.
Description
Technical field
The present invention relates to a kind of solutions for strangling roller defect.
Background technique
When milling train produces width and thickness transitions, it is easy to produce Le roller, belt steel surface is caused to leave Le Yin, roll marks is strangled and lacks
It falls into than more covert, could only be found from special angle, if Quality Inspector's experience and technical level are insufficient, high-volume roller can be generated
Defect is printed, there is presently no the scheme that can thoroughly solve this defect, the purpose of the present invention is to provide a kind of process control schemes,
By optimizing production plan arrangement, optimize rolling scheme, optimization tension force solves the Le roller defect of milling train, and finally prevents
Batch strangles roller defect.
Summary of the invention
The technical solution that the present invention uses for the above technical issues are as follows: a kind of solution for strangling roller defect, optimization
Production plan arrangement, strict control specification variation, increases alert interface on the basis of rolling-mill housing exports tension-sensing roller, when
It when tension changes, is reminded, optimizes milling train tension fluctuation, dynamic variable specification rolling model sets suitable tension value,
FGC function is normally put into during ensuring to become specification, and is determined formula to the FGC time in dynamic variable specification FGC rolling procedure, put down
The Correlative Influence Factors such as steady transition design of Regulator, velocity transformation formula and influence FGC control precision are optimized and change
Into rolling stability during holding dynamic variable specification.
Preferably, the optimization production plan arrangement includes carrying out hot rolling stock roll thickness transitions, maintaining milling train outlet
Thickness jump benchmark and follow width jump principle.
Preferably, reminding tension variation is big to carry out taking out roller inspection when the alert interface monitoring tension is more than 10%
It looks into, when tension is more than 20%, alarm and reminding must roll change.
Compared with prior art, the advantages and positive effects of the present invention are, propose a kind of solution party for strangling roller defect
Method, by optimizing production plan arrangement, to improve rolling stability, strict control format change can prevent to strangle from source
The generation of roll marks increases alert interface on the basis of rolling-mill housing exports tension-sensing roller, when tension variation is more than 10%, Huang
Color alarm and reminding tension variation is big to need to take out roller inspection, and more than 20%, warning red reminds necessary roll change, can will strangle roller defect
Loss be preferably minimized, optimize milling train tension fluctuation, dynamic variable specification rolling model sets suitable tension value, causes to become specification
Period roll-force, roll gap, tension fluctuation are larger, this be cause strangle roller remote cause, it is ensured that become specification during FGC function just
Often investment, and formula, smooth transition design of Regulator, velocity transformation are determined to the FGC time in dynamic variable specification FGC rolling procedure
The Correlative Influence Factors such as formula and influence FGC control precision are optimized and improve, and keep rolling during dynamic variable specification
Stability, and finally prevention batch strangles roller defect.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for ability
For the those of ordinary skill of domain, without any creative labor, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is hot rolling stock roll thickness transitions principle schematic diagram of the present invention；
Fig. 2 is course of hot rolling schematic diagram of the invention；
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawings and examples
The present invention will be further described.It should be noted that in the absence of conflict, in embodiments herein and embodiment
Feature can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other modes described herein are different from, therefore, the present invention is not limited to the specific of specification is described below
The limitation of embodiment.
As shown in Figure 1 and Figure 2, it then follows secondly the hot rolling stock roll thickness transitions principle that Fig. 1 is shown is exported according to milling train
Thickness jumps benchmark, as h < 0.5mm, Δ h≤0.3mm, as 0.5≤h≤0.8mm, Δ h≤0.5mm, when 0.8 < h≤
1.85mm, Δ h≤0.7mm work as h > 1.85mm, Δ h≤0.8mm, and later according to width jump principle, the width of front and back band steel is poor
Ying≤150mm.Later according to alert interface, when tension variation is more than 10%, warning yellow reminds that tension variation is big to need to take out
Roller inspection, more than 20%, warning red reminds necessary roll change, the loss that strangle roller defect can be preferably minimized, finally, optimization is rolled
Machine tension fluctuation, dynamic variable specification rolling model set suitable tension value.Cause roll-force, roll gap, tension during change specification
Fluctuate it is larger, this be cause strangle roller remote cause.FGC function is normally put into during ensuring to become specification, and is become to dynamic and advised
The FGC time determines formula, smooth transition design of Regulator, velocity transformation formula and influences FGC control in lattice FGC rolling procedure
The Correlative Influence Factors such as precision are optimized and improve, and keep rolling stability during dynamic variable specification.
During dynamic analysis, pass through the product of the mill speed difference of adjacent rolling direction strip outlet side and entrance side
Divide and solve, then seeks forward pull with stress-strain relation, backward pull is determined according to interstand tension balance principle, for rack
Between the processing of tension have several schemes:
1, between rack by neighbouring rolling direction material deform the integral of the mill speed difference of entrance side and outlet side come
It solves, then seeks forward pull with stress-strain relation；According to the balanced type with backward pull:
Tfi=E/L ∫ (Vin,i+1-Vout,i)dt
In formula, E is the elasticity modulus (2.058105MPa) of strip；L distance between rack.
2, the model that plate thickness is distributed between consideration rack, integrates the speed difference of rack entrance, outlet side material, finds out
The deformation of material rolling direction；
3, using the material between rack as the model of rigid body, ignore the flexible deformation of material between rack, if the i-th rack
Rolled piece admission velocity is equal with the rolled piece admission velocity of i+1 machine frame rolling mill.When stable rolling state is by external interference,
Balance, which is broken, is transferred to next equilibrium state.The transient of continuous-rolling may be considered of short duration stable state sequence and prolong
Continuous and interim concentration, takes certain flashy plate thickness as shown in Fig. 2, once being influenced by the external world, the response that moment generates makes to connect
Each non-independent variable of continuous milling train system has periodic changes, which will be always maintained at next extraneous influence
It arrives.Therefore the rate of outflow of each the i-th frame material of moment must be equal with the inflow velocity of i+1 frame material.In addition,
It is equal, the certain equation of second flow in roller gap due to being flowed between any breast roller, flowing out the amount of material
It is to set up, roll bites the certain equation of area's second flow
Vout,i-1·HI=Vout,i·hi
The rate of outflow of rack outlet material is
Equalization of strain formula is
hiTfi=Hi+1Tbi+1
The method feature is interstand tension without integral calculation, but is solved with algebraic manipulation.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
It imitates embodiment and is applied to other fields, but without departing from the technical solutions of the present invention, according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the protection scope of technical solution of the present invention.
Claims (3)
1. a kind of solution for strangling roller defect, which is characterized in that optimization production plan arrangement, the variation of strict control specification,
Increase alert interface on the basis of rolling-mill housing outlet tension-sensing roller, when tension changes, is reminded, optimize milling train
Tension fluctuation, dynamic variable specification rolling model set suitable tension value, it is ensured that and FGC function is normally put into during becoming specification,
And to the FGC time in dynamic variable specification FGC rolling procedure determine formula, smooth transition design of Regulator, velocity transformation formula with
And influence the Correlative Influence Factors such as FGC control precision and be optimized and improve, keep rolling stability during dynamic variable specification.
2. a kind of solution for strangling roller defect according to claim 1, which is characterized in that the optimization production plan peace
Row includes carrying out hot rolling stock roll thickness transitions, maintain milling train exit thickness jump benchmark and following width jump principle.
3. a kind of solution for strangling roller defect according to claim 1, which is characterized in that the alert interface monitoring
When power is more than 10%, remind tension variation is big to carry out taking out roller inspection, when tension is more than 20%, alarm and reminding must be changed
Roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811264209.3A CN109248925A (en) | 2018-10-29 | 2018-10-29 | A kind of solution for strangling roller defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811264209.3A CN109248925A (en) | 2018-10-29 | 2018-10-29 | A kind of solution for strangling roller defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109248925A true CN109248925A (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811264209.3A Pending CN109248925A (en) | 2018-10-29 | 2018-10-29 | A kind of solution for strangling roller defect |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1524636A (en) * | 2003-02-26 | 2004-09-01 | 三菱电机株式会社 | Sheet thickness changing apparatus of continuous rolling mill during rolling |
| CN101607264A (en) * | 2009-07-07 | 2009-12-23 | 东北大学 | A kind of periodic longitudinal variable-thickness strip, longitudinal variable-thickness sheet material and preparation method thereof |
| CN104226697A (en) * | 2013-06-09 | 2014-12-24 | 上海梅山钢铁股份有限公司 | Tandem cold rolling mill flying gauge change speed control method |
| CN104289523A (en) * | 2014-09-15 | 2015-01-21 | 首钢京唐钢铁联合有限责任公司 | Control method for improving belt breakage in dynamic specification changing process |
| CN107442574A (en) * | 2016-05-31 | 2017-12-08 | 本钢板材股份有限公司 | A kind of five Stands Cold Tandem Mills group automated system gets rid of the control method of frame rolling |
-
2018
- 2018-10-29 CN CN201811264209.3A patent/CN109248925A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1524636A (en) * | 2003-02-26 | 2004-09-01 | 三菱电机株式会社 | Sheet thickness changing apparatus of continuous rolling mill during rolling |
| CN101607264A (en) * | 2009-07-07 | 2009-12-23 | 东北大学 | A kind of periodic longitudinal variable-thickness strip, longitudinal variable-thickness sheet material and preparation method thereof |
| CN104226697A (en) * | 2013-06-09 | 2014-12-24 | 上海梅山钢铁股份有限公司 | Tandem cold rolling mill flying gauge change speed control method |
| CN104289523A (en) * | 2014-09-15 | 2015-01-21 | 首钢京唐钢铁联合有限责任公司 | Control method for improving belt breakage in dynamic specification changing process |
| CN107442574A (en) * | 2016-05-31 | 2017-12-08 | 本钢板材股份有限公司 | A kind of five Stands Cold Tandem Mills group automated system gets rid of the control method of frame rolling |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190122 |
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| RJ01 | Rejection of invention patent application after publication |