CN109702020A - A kind of Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system and method - Google Patents
A kind of Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system and method Download PDFInfo
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- CN109702020A CN109702020A CN201910187661.2A CN201910187661A CN109702020A CN 109702020 A CN109702020 A CN 109702020A CN 201910187661 A CN201910187661 A CN 201910187661A CN 109702020 A CN109702020 A CN 109702020A
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Abstract
The present invention is suitable for cold rolling technology field, disclose a kind of Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system and method, this method is specific as follows: in cold-rolled process, planisher adjusts the current roll-force of planisher, the entrance tension of planisher and outlet tension based on the difference of setting elongation percentage and feedback elongation percentage simultaneously.Planisher calculates the entrance tension and increased outlet tension that increased roll-force, reduction are synchronized in production automatically respectively, to improve the straightness of strip, reduce the fluctuation of elongation percentage of planisher during rolling Thin Strip Steel simultaneously, obtains elongation percentage precision controlling within 0.04%.Planisher stability is improved simultaneously, reduces fault time, improves product quality.
Description
Technical field
The invention belongs to cold rolling technology field, a kind of Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system and method are provided.
Background technique
For single stand skin pass mill at present generally using roll-force control and strip tension control, which is adopted
Become the control mode of roll-force with identical tension.It is smooth to annealed strip progress within the scope of small deformation amount, yield limit is reduced
To minimum value, yield point elongation is made to disappear.Planisher is in production Thin Strip Steel, when such as high-strength thin strip steel, only by increasing roll-force
Reach the requirement of steel plate elongation percentage, affects the straightness of strip.
Summary of the invention
The embodiment of the invention provides a kind of Cold-Rolled Strip Temper Mill Thin Strip Steel board-shape control methods, it is intended to solve existing identical tension
Become the bad problem of strip profile and flatness existing for roll-force control mode,
The invention is realized in this way a kind of Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system, the system comprises:
Rolling force controller, tension controller one and tension controller two on planisher,
Roll-force correction model is integrated in rolling force controller, it is real that rolling force controller is based on roll-force correction model
The roll-force that Shi Xiuzheng planisher currently exports,
Tensioned correction model one is integrated in tension controller one, and tensioned amendment mould is integrated in tension controller two
Type two corrects planisher entrance tension and outlet tension based on tension correction model one and tension correction model two in real time respectively.
Further, the roll-force correction model based on the difference of strip elongation percentage setting value and elongation percentage value of feedback come
Calculate roll-force correction value Δ F(t), roll-force correction model is specific as follows:
K1p=k1×k2/k3
Wherein, Δ F(t)For the roll-force correction value of t moment, K1pTo roll force controller amplification coefficient, e (t) is that the rate of stretching is set
The difference of definite value and elongation percentage value of feedback, Ti integration time constant 400, k1It is directly proportional to e (t) for adaptation coefficient, k2To put
Big coefficient, Kst be steel plate thickness roll variation coefficient, Sw (act) be the currently practical width of strip, Sw (act) be steel band most
Big width.
Further, tension correction model one is calculated based on the difference of strip elongation percentage setting value and elongation percentage value of feedback
One Δ T of tension correction valueen(t), tension correction model one indicates specific as follows:
Wherein, K2pFor the amplification coefficient of tension controller, e (t0) it is that t moment stretches rate setting value and elongation percentage value of feedback
Difference, Ti integration time constant 50, s0The sectional area of thin plate, σ b are the tensile strength of steel plate.
Further, tension correction model two is calculated based on the difference of strip elongation percentage setting value and elongation percentage value of feedback
Two Δ T of tension correction valueex(t), tension correction model two indicates specific as follows:
Wherein, Δ Tex(t)For the tension correction value two of t moment, K2pFor the amplification coefficient of tension controller, when e (t) is t
Carve the difference for stretching rate setting value Yu elongation percentage value of feedback, Ti integration time constant 50, s0The sectional area of thin plate, σ b are the anti-of steel plate
Tensile strength.
The invention is realized in this way a kind of Cold-Rolled Strip Temper Mill Thin Strip Steel board-shape control method, the method are specific as follows:
In cold-rolled process, to adjust planisher simultaneously current for difference of the planisher based on setting elongation percentage and feedback elongation percentage
Roll-force, planisher entrance tension and outlet tension.
Further, the rolling correction value Δ F calculated based on roll-force correction model(t)To correct, planisher is current to be rolled
Power processed.
Further, the one Δ T of tension correction value calculated based on tension correction model oneen(t)To correct planisher entrance
Tension value.
Further, the two Δ T of tension correction value calculated based on tension correction model twoex(t)To correct the outlet of planisher
Tension.
The control method provided by the invention for improving Cold-Rolled Strip Temper Mill thin band steel sheet shape has the following beneficial effects:
It rolls force controller, tension controller one and tension controller two and calculates synchronous in planisher production increase automatically respectively
The entrance tension and increased outlet tension of the roll-force, reduction that add, improve the straightness of strip, while reducing planisher and rolling
The fluctuation of elongation percentage during Thin Strip Steel processed obtains elongation percentage precision controlling within 0.04%, while improving planisher
Stability reduces fault time, improves product quality.
Detailed description of the invention
Fig. 1 is Cold-Rolled Strip Temper Mill thin band steel sheet shape control method flow chart provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Planisher includes rolling force controller and tension controller one and tension controller two, in rolling force controller
It is integrated with roll-force correction model, rolling force controller is rolled based on what roll-force correction model corrected that planisher currently exports in real time
Power processed integrates tensioned correction model one in tension controller one, tensioned correction model is integrated in tension controller two
Two, planisher entrance tension and outlet tension are corrected based on tension correction model one and tension correction model two in real time respectively；
In embodiments of the present invention, difference of the roll-force correction model based on strip elongation percentage setting value Yu elongation percentage value of feedback
Value calculates roll-force correction value Δ F(t), initial rolling force F0(t)For a given value, specification and elongation percentage based on strip are set
Definite value is configured, elongation percentage value of feedback, that is, current strip elongation percentage value, based on strip in planisher entrance and outlet
Movement velocity determines that in embodiments of the present invention, roll-force correction model indicates specific as follows:
K1p=k1×k2/k3
Wherein, Δ F(t)For the roll-force correction value (unit: MN) of t moment, K1pTo roll force controller amplification coefficient, e
(t) difference of rate setting value Yu elongation percentage value of feedback, Ti integration time constant 400 (unit: ms), k are stretched for t moment1It is adaptive
Coefficient is answered, k directly proportional to e (t)2For amplification coefficient, Kst is that steel plate thickness rolls variation coefficient, and Sw (act) is that strip is current
Developed width (unit: m), Sw (act) are the maximum width (unit: m) of steel band.
In embodiments of the present invention, in strip uniform motion, k2Value be 10, strip acceleration or deceleration move
When, k2Value be 20.When strip travels at the uniform speed, k2The smaller requirement that can satisfy elongation percentage precision, and have higher stabilization
Property.Elongation percentage precision is lower during acceleration, deceleration, k2Increase the precision that elongation percentage can be improved, meets the quality requirement of product.
In embodiments of the present invention, difference of the tension correction model one based on strip elongation percentage setting value Yu elongation percentage value of feedback
Value calculates one Δ T of tension correction valueen(t), the initial tension value T of planisher entranceen(t0)For a given tension value, elongation percentage is anti-
Feedback value, that is, current strip elongation percentage value is determined based on strip in the movement velocity of planisher entrance and outlet, in the present invention
In embodiment, calculation formula it is specific as follows:
Wherein, Δ Ten(t)For the tension correction value one (unit: MN) of t moment, K2pFor the amplification coefficient of tension controller, e
(t) difference of rate setting value Yu elongation percentage value of feedback, Ti integration time constant 50 (unit: ms), s are stretched for t moment0Thin plate is cut
Area (unit: mm2), σ b is the tensile strength (unit: N/mm of steel plate2)。
Tension correction model two calculates tension amendment based on the difference of strip elongation percentage setting value and elongation percentage value of feedback
Two Δ T of valueex(t), the initial tension value T of planisher outletex(t0)For a given tension value, elongation percentage value of feedback, that is, current strip
Elongation percentage value determined based on strip in the movement velocity of planisher entrance and outlet, in embodiments of the present invention, tension amendment
Model two indicates specific as follows:
Wherein, Δ Tex(t)For the tension correction value two (unit: MN) of t moment, K2pFor the amplification coefficient of tension controller, e
(t) difference of rate setting value Yu elongation percentage value of feedback, Ti integration time constant 50 (unit: ms), s are stretched for t moment0Thin plate is cut
Area (unit: mm2), σ b is the tensile strength (unit: N/mm of steel plate2)。
Fig. 1 is Cold-Rolled Strip Temper Mill thin band steel sheet shape control method flow chart provided in an embodiment of the present invention, and this method is specific
It is as follows:
In cold-rolled process, to adjust planisher simultaneously current for difference of the planisher based on setting elongation percentage and feedback elongation percentage
Roll-force, planisher entrance tension and outlet tension.
In embodiments of the present invention, the rolling correction value Δ F calculated based on roll-force correction model(t)To correct planisher
Current roll-force, the calculation formula for rolling correction value are specific as follows:
Roll-force correction value Δ F(t)Calculation formula are as follows:
K1p=k1×k2/k3
Wherein, K1pTo roll force controller amplification coefficient, e (t) is to stretch rate setting value to obtain difference, Ti with elongation percentage value of feedback
Integration time constant 400 (unit: ms), k1It is directly proportional to e (t) for adaptation coefficient, k2For amplification coefficient, at the uniform velocity transported in strip
When dynamic, k2Value be 10, strip acceleration or deceleration movement when, k2Value be 20, Kst be steel plate thickness rolling variation system
Number, Sw (act) are the currently practical width of strip (unit: m), and Sw (act) is the maximum width (unit: m) of steel band；
In embodiments of the present invention, the one Δ T of tension correction value calculated based on tension correction model oneen(t)It is smooth to correct
The tension value of machine entrance, one Δ T of tension correction valueen(t)The calculation formula of (unit: MN) is specific as follows:
Wherein, K2pFor the amplification coefficient of tension controller, e (t) is the difference that t moment stretches rate setting value Yu elongation percentage value of feedback
Value, Ti integration time constant 50 (unit: ms), s0Sectional area (the unit: mm of thin plate2), σ b be steel plate tensile strength (unit:
N/mm2)。
In embodiments of the present invention, the two Δ T of tension correction value calculated based on tension correction model twoex(t)It is smooth to correct
The outlet tension of machine, two Δ T of tension correction valueex(t)The calculation formula of (unit: MN) is specific as follows:
Wherein, K2pFor the amplification coefficient of tension controller, e (t) is the difference that t moment stretches rate setting value Yu elongation percentage value of feedback
Value, Ti integration time constant 50 (unit: ms), s0Sectional area (the unit: mm of thin plate2), σ b be steel plate tensile strength (unit:
N/mm2)。
The control method provided by the invention for improving Cold-Rolled Strip Temper Mill thin band steel sheet shape has the following beneficial effects:
It rolls force controller, tension controller one and tension controller two and calculates synchronous in planisher production increase automatically respectively
The entrance tension and increased outlet tension of the roll-force, reduction that add, improve the straightness of strip, while reducing planisher and rolling
The fluctuation of elongation percentage during Thin Strip Steel processed, target obtains elongation percentage precision controlling within 0.04%, while improving flat
Complete machine stability reduces fault time, improves product quality.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system, which is characterized in that the system comprises:
Rolling force controller, tension controller one and tension controller two on planisher,
Roll-force correction model is integrated in rolling force controller, rolling force controller is based on roll-force correction model and repairs in real time
The roll-force that positive planisher currently exports,
Tensioned correction model one is integrated in tension controller one, and tensioned correction model is integrated in tension controller two
Two, planisher entrance tension and outlet tension are corrected based on tension correction model one and tension correction model two in real time respectively.
2. Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system as described in claim 1, which is characterized in that the roll-force corrects mould
Type calculates roll-force correction value Δ F based on the difference of strip elongation percentage setting value and elongation percentage value of feedback(t), roll-force amendment
Model is specific as follows:
K1p=k1×k2/k3
Wherein, Δ F(t)For the roll-force correction value of t moment, K1pTo roll force controller amplification coefficient, e (t) is to stretch rate setting value
With the difference of elongation percentage value of feedback, Ti integration time constant 400, k1It is directly proportional to e (t) for adaptation coefficient, k2For amplification system
Number, Kst are that steel plate thickness rolls variation coefficient, and Sw (act) is the currently practical width of strip, and Sw (act) is that the maximum of steel band is wide
Degree.
3. Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system as described in claim 1, which is characterized in that one base of tension correction model
One Δ T of tension correction value is calculated in the difference of strip elongation percentage setting value and elongation percentage value of feedbacken(t), tension correction model one
Indicate specific as follows:
Wherein, K2pFor the amplification coefficient of tension controller, e (t) is the difference that t moment stretches rate setting value Yu elongation percentage value of feedback,
Ti integration time constant 50, s0The sectional area of thin plate, σ b are the tensile strength of steel plate.
4. Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system as described in claim 1, which is characterized in that tension correction model diyl
Two Δ T of tension correction value is calculated in the difference of strip elongation percentage setting value and elongation percentage value of feedbackex(t), tension correction model two
Indicate specific as follows:
Wherein, Δ Tex(t)For the tension correction value two of t moment, K2pFor the amplification coefficient of tension controller, e (t) is that t moment stretches rate
The difference of setting value and elongation percentage value of feedback, Ti integration time constant 50, s0The sectional area of thin plate, σ b are that the tension of steel plate is strong
Degree.
5. a kind of control based on Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system described in Claims 1-4 any claim
Method, which is characterized in that the method is specific as follows:
In cold-rolled process, planisher based on setting elongation percentage and feed back elongation percentage difference adjust simultaneously planisher currently roll
Power processed, the entrance tension of planisher and outlet tension.
6. Cold-Rolled Strip Temper Mill Thin Strip Steel board-shape control method as claimed in claim 5, which is characterized in that correct mould based on roll-force
The rolling correction value Δ F that type calculates(t)To correct the current roll-force of planisher.
7. Cold-Rolled Strip Temper Mill Thin Strip Steel board-shape control method as claimed in claim 5, which is characterized in that be based on tension correction model
The one one Δ T of tension correction value calculateden(t)To correct the tension value of planisher entrance.
8. Cold-Rolled Strip Temper Mill Thin Strip Steel board-shape control method as claimed in claim 5, which is characterized in that be based on tension correction model
The two two Δ T of tension correction value calculatedex(t)To correct the outlet tension of planisher.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910187661.2A CN109702020A (en) | 2019-03-13 | 2019-03-13 | A kind of Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910187661.2A CN109702020A (en) | 2019-03-13 | 2019-03-13 | A kind of Cold-Rolled Strip Temper Mill Thin Strip Steel plat control system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505349A (en) * | 2022-01-26 | 2022-05-17 | 宝钢湛江钢铁有限公司 | Automatic control method for technological parameters of cold rolling temper mill |
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| JPH10291013A (en) * | 1997-04-16 | 1998-11-04 | Nisshin Steel Co Ltd | Shape control method in cold tandem rolling |
| JP2002282918A (en) * | 2001-03-26 | 2002-10-02 | Nisshin Steel Co Ltd | Shape control method for continuous cold rolling |
| CN102553923A (en) * | 2011-12-31 | 2012-07-11 | 中冶南方（武汉）自动化有限公司 | Control method for self-adaption compensation of elongation of planisher |
| CN107900144A (en) * | 2017-11-20 | 2018-04-13 | 武汉科技大学 | A kind of elongation percentage composite control method of the online planisher of pickling |
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2019
- 2019-03-13 CN CN201910187661.2A patent/CN109702020A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10291013A (en) * | 1997-04-16 | 1998-11-04 | Nisshin Steel Co Ltd | Shape control method in cold tandem rolling |
| JP2002282918A (en) * | 2001-03-26 | 2002-10-02 | Nisshin Steel Co Ltd | Shape control method for continuous cold rolling |
| CN102553923A (en) * | 2011-12-31 | 2012-07-11 | 中冶南方（武汉）自动化有限公司 | Control method for self-adaption compensation of elongation of planisher |
| CN107900144A (en) * | 2017-11-20 | 2018-04-13 | 武汉科技大学 | A kind of elongation percentage composite control method of the online planisher of pickling |
Non-Patent Citations (2)
| Title |
|---|
| 姜丽: "平整机延伸率和板形控制策略研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505349A (en) * | 2022-01-26 | 2022-05-17 | 宝钢湛江钢铁有限公司 | Automatic control method for technological parameters of cold rolling temper mill |
| CN114505349B (en) * | 2022-01-26 | 2023-08-25 | 宝钢湛江钢铁有限公司 | Automatic control method for technological parameters of cold rolling temper mill |
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Application publication date: 20190503 |
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