CN106269908A - Strip steel wedge shape autocontrol method based on heredity - Google Patents
Strip steel wedge shape autocontrol method based on heredity Download PDFInfo
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- CN106269908A CN106269908A CN201510275691.0A CN201510275691A CN106269908A CN 106269908 A CN106269908 A CN 106269908A CN 201510275691 A CN201510275691 A CN 201510275691A CN 106269908 A CN106269908 A CN 106269908A
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Abstract
The present invention relates to hot strip rolling field, particularly relate to a kind of hot-strip Wedge Control.A kind of strip steel wedge shape autocontrol method based on heredity, first passes through the detector detection in milling train exit and obtains strip steel actual measurement shim values, and strip steel is surveyed shim values and shim values threshold value compares and obtain wedge shape deviation value；Then choose some frames control frame as wedge shape and set each wedge shape and control the efficiency factor of frame, then wedge shape deviation value is combined the strip steel speed when wedge shape controls frame and efficiency factor is calculated the unilateral adjustment amount of roll gap of this frame.The present invention controls the wedge shape regulated quantity of each frame based on second flow balance principle equal proportion, fast and effectively hot-rolled finished product wedge shape can be controlled, overcome the monolateral wave etc. caused because of regulation wedge shape to negatively affect, substantially increase control ability and the level of production process wedge shape；After hot rolling product line comes into operation, wedge shape volume number qualification rate is made to rise to more than 65% from 40%.
Description
Technical field
The present invention relates to hot strip rolling field, particularly relate to a kind of hot-strip Wedge Control.
Background technology
The product such as automobile, household electrical appliance, user's wedge shape to hot-strip is directly applied to more and more along with hot-continuous-rolling strip steel
Have higher requirement, poor to reduce the strip steel same thickness of slab when downstream user uses.
In hot rolling actual production process, a lot of companies there is no the automatic control function of wedge shape, is primarily due to wedge shape and automatically controls
The adjustment of milling train one side roll gap deviation being easily caused rolling stability poor, particularly in finish rolling region, wedge shape automatically controls and is easily caused
Finish rolling sideslip, monolateral wave, roll brokenly even steel scrap.
Patent " hot-strip roughing mills camber and wedge shape autocontrol method ", the patent No.: CN201010266910, its
Invention is mainly by actual value, the Practical Calculation value of roll gap and the spring parameter of frame both sides by on-the-spot roughing mill both sides roll-force
Deng as input, after accurate calculating, or both sides roll gap size unilateral eventually through regulation milling train realizing camber and
The correction of wedge shape.The wedge shape that this kind of scheme exports just for roughing mill is adjusted, and hot-rolled finished product also needs to carry out finish rolling 7 frame
Tandem rolling, affected by various factors, roll rear finished product still possible wedge shape the best.
Patent " convexity of hot rolled in series type rolling machine and/or wedge shape autocontrol method and system ", the patent No.:
CN201010230419, by finishing mill outlet wedge shape measured value by thickness than calculating the wedge that F1-7 rack outlet needs to regulate
Shape deviation, calculates the deviation adjustment amount of roll gap of each frame the most simultaneously, and each adjustment all needs to wait for the strip steel arrival that F1 adjusts
Measurement, calculating and feedback adjustment next time just can be carried out after F7 outlet plate profile instrument.The method exists the most delayed.In addition should
Method can not the most dynamically ensure that roll gap deviation is adjusted by equal proportion wedge shape, is easily caused each rack outlet of finish rolling and occurs monolateral
Wave, the flatness defect such as roll brokenly.
Summary of the invention
The technical problem to be solved be to provide a kind of based on heredity strip steel wedge shape autocontrol method, the method based on
Second flow balance principle equal proportion controls the wedge shape regulated quantity of each frame, it is possible to control hot-rolled finished product wedge shape fast and effectively
System, overcomes the monolateral wave etc. caused because of regulation wedge shape and negatively affects, substantially increase control ability and the water of production process wedge shape
Flat.
The present invention is achieved in that a kind of strip steel wedge shape autocontrol method based on heredity, sets shim values threshold value, with band
Steel transmission side thickness is strip steel shim values with the difference of strip steel fore side thickness, and the detector first passing through milling train exit detects
Survey shim values to strip steel, and strip steel is surveyed shim values and shim values threshold value compare and obtain wedge shape deviation value；Then choose
Some frames control frame as wedge shape and set each wedge shape and control the efficiency factor of frame, then wedge shape deviation value is combined strip steel exist
Speed and efficiency factor when wedge shape controls frame are calculated the unilateral adjustment amount of roll gap of this frame.
Set the roll gap adjustment threshold value of each frame, when unilateral roll gap practical adjustments amount is more than roll gap adjustment threshold value, take unilateral roll gap
Practical adjustments amount is roll gap adjustment threshold value.
The described unilateral roll gap practical adjustments amount Δ Gap of the i-th frameiIt is calculated by formula 1,
In formula: Δ GapiThe unilateral roll gap practical adjustments amount of the i-th frame；
WeWedge shape deviation value, the strip steel actual measurement shim values-shim values threshold value in wedge shape deviation value=milling train exit；
KmiThe mill modulus of the i-th frame；
KsiThe strip steel plastic deformation coefficient of the i-th frame；
vendThe strip speed of milling train end frame；
viThe strip speed of the i-th frame
KiThe efficiency factor of the i-th frame.
This control method also includes the step judging strip steel actual measurement shim values, when the strip steel in milling train exit surveys shim values
During less than or equal to shim values threshold value, the roll gap of each frame is not adjusted.
The present invention is to reduce the impact on plate shape when being controlled wedge shape, it is desirable to each frame equal proportion wedge shape changes, thus protects
Card strip steel occurs without camber or deformed steel strip situation in frame.It is all equal proportion wedge shape for ensureing in the strip steel any time cycle
Change, needs to consider the factor of belt steel thickness change, introduces second flow balance principle, then according to thickness and speed in therefore controlling
Degree has inversely proportional relation, obtains each frame one side adjustment amount of roll gap, can examine in real time according to each frame during so controlling
The speed data surveyed is controlled ensure that strip steel wedge shape equal proportion changes, it is ensured that the heredity of wedge shape equal proportion.
Present invention strip steel wedge shape autocontrol method based on heredity controls the wedge shape of each frame based on second flow balance principle equal proportion
Regulated quantity, it is possible to be controlled hot-rolled finished product wedge shape fast and effectively, overcomes negative because of the regulation monolateral wave that causes of wedge shape etc.
Impact, substantially increases control ability and the level of production process wedge shape；In regulation, data based on detection in real time are carried out dynamically
Feedback control, until shim values meets requirement, it is to avoid calculate and forbidden to cause regulating inaccurate situation；Produce line input in hot rolling to make
With rear, effect is notable, makes the wedge shape volume number qualification rate of strip steel rise to more than 65% from 40%, improves the market competition of product
Power.
Accompanying drawing explanation
Fig. 1 is the operating process block diagram of present invention strip steel wedge shape autocontrol method based on heredity.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments be merely to illustrate the present invention and
It is not used in restriction the scope of the present invention.In addition, it is to be understood that after having read the content of present invention statement, those skilled in the art
Can make various changes or modifications the present invention, these equivalent form of values fall within the model that the application appended claims is limited equally
Enclose.
Embodiment 1
A kind of strip steel wedge shape autocontrol method based on heredity, sets shim values threshold value, grasps with strip steel with strip steel transmission side thickness
The difference making side thickness is strip steel shim values, and the detector detection first passing through milling train exit obtains strip steel actual measurement shim values, and
Strip steel is surveyed shim values and shim values threshold value compares and obtains wedge shape deviation value；Then some frames are chosen as wedge shape control
Frame and set each wedge shape control frame efficiency factor, then wedge shape deviation value is combined strip steel wedge shape control frame time speed
With the unilateral adjustment amount of roll gap that efficiency factor is calculated this frame.
In the present invention, being found through experiments, in the case of identical adjustment amount of roll gap, the efficiency of each frame regulation is different, because of
This, after have selected wedge shape control frame, obtains the efficiency factor of each frame by experiment.
The described unilateral roll gap practical adjustments amount Δ Gap of the i-th frameiIt is calculated by formula 1,
In formula: Δ GapiThe unilateral roll gap practical adjustments amount of the i-th frame；
WeWedge shape deviation value, the strip steel actual measurement shim values-shim values threshold value in wedge shape deviation value=milling train exit；
KmiThe mill modulus of the i-th frame；
KsiThe strip steel plastic deformation coefficient of the i-th frame；
vendThe strip speed of milling train end frame；
viThe strip speed of the i-th frame
KiThe efficiency factor of the i-th frame.
In the present embodiment, affected by each frame regulating power, need to set the roll gap adjustment threshold value of each frame, work as one side
When roll gap practical adjustments amount is more than roll gap adjustment threshold value, taking unilateral roll gap practical adjustments amount is roll gap adjustment threshold value.
It addition, in practical operation, require as long as meeting certain strip shape quality, therefore in the present invention, this control method is also
Including the step that strip steel actual measurement shim values is judged, when the strip steel in milling train exit surveys shim values less than or equal to shim values threshold
During value, the roll gap of each frame is not adjusted.
As it is shown in figure 1, use the present invention based on specifically comprising the following steps that hereditary strip steel wedge shape autocontrol method is controlled
1) the continuous shim values that the detector detection in milling train exit obtains is filtered processing, and obtains strip steel actual measurement shim values；
2) judge whether strip steel actual measurement shim values exceedes shim values threshold value, as leapt to step 6 less than shim values threshold value, as super
Cross entrance next step；
3) the unilateral roll gap practical adjustments amount of each frame it is calculated by formula 1；
4) one side roll gap practical adjustments amount is compared with roll gap adjustment threshold value, when unilateral roll gap practical adjustments amount exceedes roll gap adjustment
During threshold value, taking unilateral roll gap practical adjustments amount is roll gap adjustment threshold value, and in the case of other, unilateral roll gap practical adjustments measures formula 1
Value of calculation；
5) according to the unilateral roll gap practical adjustments amount of each frame, frame roll gap is adjusted；
6) terminate.
This patent has been put into implementing in our company 1580 hot rolling L1 system, and can borrow on similar hot rolling line
Mirror is implemented.Example: rolled steel reel number: 124507051100 specifications: 2.6*1275mm, puts into the inventive method and carries out wedge
Shape controls, and selected F4-F6 frame controls frame as wedge shape, efficiency factor K of frame4=0.25, K5=0.35, K6=0.4；
It is 35 μm that exit detector detection obtains strip steel actual measurement shim values, is unsatisfactory for shim values threshold value 4um requirement, needs to put into this
Inventive method is adjusted；
By formula 1 be calculated the unilateral adjustment amount of roll gap of F4-F6 frame be respectively 30.47 μm, 34.44 μm, 41.35
μm, after regulation, detector detection in exit obtains strip steel actual measurement shim values is 3 μm, meets shim values threshold requirement.
Claims (4)
1. a strip steel wedge shape autocontrol method based on heredity, is characterized in that: set shim values threshold value, with strip steel transmission
Side thickness is strip steel shim values with the difference of strip steel fore side thickness, and the detector detection first passing through milling train exit obtains strip steel
Actual measurement shim values, and strip steel is surveyed shim values and shim values threshold value compare and obtain wedge shape deviation value；Then some machines are chosen
Frame controls frame as wedge shape and sets the efficiency factor of each wedge shape control frame, then wedge shape deviation value is combined strip steel in wedge shape control
Speed during frame processed and efficiency factor are calculated the unilateral adjustment amount of roll gap of this frame.
2., as claimed in claim 1 based on hereditary strip steel wedge shape autocontrol method, it is characterized in that: set each frame
Roll gap adjustment threshold value, when unilateral roll gap practical adjustments amount is more than roll gap adjustment threshold value, taking unilateral roll gap practical adjustments amount is roll gap
Regulation threshold value.
3., as claimed in claim 1 based on hereditary strip steel wedge shape autocontrol method, it is characterized in that: the institute of the i-th frame
State unilateral roll gap practical adjustments amount Δ GapiIt is calculated by formula 1,
In formula: Δ GapiThe unilateral roll gap practical adjustments amount of the i-th frame；
WeWedge shape deviation value, the strip steel actual measurement shim values-shim values threshold value in wedge shape deviation value=milling train exit；
KmiThe mill modulus of the i-th frame；
KsiThe strip steel plastic deformation coefficient of the i-th frame；
vendThe strip speed of milling train end frame；
viThe strip speed of the i-th frame
KiThe efficiency factor of the i-th frame.
4. the strip steel wedge shape autocontrol method based on heredity as described in claim any one in claims 1 to 3, it is special
Levy and be: this control method also includes the step judging strip steel actual measurement shim values, when the strip steel in milling train exit surveys wedge shape
When value is less than or equal to shim values threshold value, the roll gap of each frame is not adjusted.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644463A (en) * | 2020-05-20 | 2020-09-11 | 安阳钢铁股份有限公司 | Method for improving wedge shape of hot continuous rolling strip steel |
| CN112453067A (en) * | 2019-09-09 | 2021-03-09 | 重庆钢铁股份有限公司 | Rough rolling plate shape adjusting method |
| CN113953332A (en) * | 2020-07-21 | 2022-01-21 | 宝山钢铁股份有限公司 | Control method for strip steel single-side wave shape between hot continuous rolling mill frames |
| CN114042760A (en) * | 2021-10-28 | 2022-02-15 | 北京科技大学设计研究院有限公司 | Method for improving wedge shape of section of strip steel through roll shifting compensation value of lower working roll |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112453067A (en) * | 2019-09-09 | 2021-03-09 | 重庆钢铁股份有限公司 | Rough rolling plate shape adjusting method |
| CN111644463A (en) * | 2020-05-20 | 2020-09-11 | 安阳钢铁股份有限公司 | Method for improving wedge shape of hot continuous rolling strip steel |
| CN111644463B (en) * | 2020-05-20 | 2022-03-11 | 安阳钢铁股份有限公司 | Method for improving wedge shape of hot continuous rolling strip steel |
| CN113953332A (en) * | 2020-07-21 | 2022-01-21 | 宝山钢铁股份有限公司 | Control method for strip steel single-side wave shape between hot continuous rolling mill frames |
| CN114042760A (en) * | 2021-10-28 | 2022-02-15 | 北京科技大学设计研究院有限公司 | Method for improving wedge shape of section of strip steel through roll shifting compensation value of lower working roll |
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