CN106363024A - Method for setting variable-aim coiling temperature along the total length of strip steel - Google Patents
Method for setting variable-aim coiling temperature along the total length of strip steel Download PDFInfo
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- CN106363024A CN106363024A CN201610728807.6A CN201610728807A CN106363024A CN 106363024 A CN106363024 A CN 106363024A CN 201610728807 A CN201610728807 A CN 201610728807A CN 106363024 A CN106363024 A CN 106363024A
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- Prior art keywords
- temperature
- target
- control point
- strip steel
- target control
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Classifications
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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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
Abstract
The invention discloses a method for setting variable-aim coiling temperature along the total length of strip steel, and relates to a control method suitable for the strip steel coiling temperature. According to the method for setting variable-aim coiling temperature along the total length of strip steel, through setting of target cooling temperature differentiation of a strip steel target control point, the adaption capacity of a model to the speed raising and reducing process is improved, automation compensation for the deviation of coiling temperature of the head and the tail of the strip steel is achieved, and the control precision of the total-length coiling temperature of the strip steel is improved. The method for setting variable-aim coiling temperature along the total length of strip steel comprises following steps of judging the position of the target control point according to the length between the target control point and the head of the strip steel; according to the position of the target control point, selecting the corresponding compensation temperature and the corresponding slope, and calculating the temperature compensation value of the target control point; adding the temperature compensation value of the target control point to the target coiling temperature to serve as the new set target coiling temperature of the target control point; carrying out set calculation.
Description
Technical field
The present invention relates to metallurgical industry field, more particularly to a kind of control method being applied to Strip Steel Coiling Temperature.
Background technology
1580mm hot continuous rolling production line, the container plate of below thickness 3mm, tinning substrate, ultra-low carbon cold-rolling material roll
Ratio more and more higher.Thin gauge strip because its thickness of thin, from heavy and light, rapid heat dissipation, speed high the features such as, production process controls unstable
Fixed, strip steel head-tail plate shape is poor, finish rolling finishing temperature controls difficulty, and this gives the coiling temperature uniformity controlling of follow-up section cooling
Bring challenges, have a strong impact on the stability of thin gauge strip product quality.The elongated temperature homogeneity of thin gauge strip is current volume
Take a temperature controlled difficult problem, be mainly reflected in strip steel head threading and afterbody throws the steel stage.Although coiling temperature model
Dynamic setting can set to collector configuration according to the actual measurement speed of strip steel target control point and finishing temperature, but due to speed
Degree amplitude of variation is big, and maximum speed is high than threading speed by more than 50%, and model weakens to the adaptability of velocity variations, model
Setting progress will significantly reduce.Practice have shown that, the bigger steel grade of target water-cooled temperature drop, the impact to coiling temperature for the speed is bigger,
Control precision of coiling temperature is lower.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of method setting change target coiling temperature along strip steel total length, leads to
The target chilling temperature differentiation crossing strip steel target control point sets to improve the adaptability to raising speed, down speeding procedure for the model,
Realize the automatic compensation of strip steel head-tail coiling temperature deviation, improve the control accuracy of strip steel total length coiling temperature.
The present invention sets, along strip steel total length, the method becoming target coiling temperature, comprises the following steps:
According to target control point apart from the length of strip steel head, judge the position of target control point,
According to the position of target control point, select corresponding compensation temperature and slope, the temperature calculating target control point is mended
Repay value,
The temperature compensation value of target control point is added on target coiling temperature as the target setting that target control point is new
Coiling temperature,
Carry out setup algorithm.
The present invention sets the method becoming target coiling temperature, the step wherein judging target control point position along strip steel total length
As follows:
(1) calculate strip length lstrip,
(2) set strip steel head length lhWith tail length lt,
(3) length setting target control point apart from strip steel head is as li, work as li≤lhWhen, represent that target control point is located at band
In steel head length range；Work as lh＜ li≤lstrip-ltWhen, represent that target control point is located in strip steel mid range；Work as lstrip-
lt＜ li≤lstripWhen, represent that target control point is located in tail part of band steel length range.
The present invention sets, along strip steel total length, the method becoming target coiling temperature, wherein calculates the temperature-compensating of target control point
The step of value is as follows:
(1) create temperature-compensating layer file, by steel grade, thickness, deceleration and roll rear target cooling temperature drop to carry out layer other
Index,
(2) retrieve head compensation temperature th_add, head length lh, afterbody compensation temperature tt_add, tail length lt, afterbody temperature
Degree slope ktTotally 5 parameters,
(3) calculate head temperature slope kh,
(4) when target control point is located in strip steel head length range, the temperature compensation value △ t of target control pointi=
th_add+kh×li,
When in length range in the middle part of target control point is located at strip steel, the temperature compensation value △ t of target control pointi=th_add
+kh×lh=0,
When target control point is located in tail part of band steel length range, the temperature compensation value △ t of target control pointi=th_add
+kh×lh+kt×[li-(lstrip-lt)].
The present invention sets, along strip steel total length, the method becoming target coiling temperature, wherein by the temperature compensation value of target control point
It is added on target coiling temperature after as the new target setting coiling temperature of target control point, also will check new target setting volume
Taking the effectiveness of temperature, judge it whether in the range of 300～800 DEG C, if exceeding bound scope, taking bound as new
Target setting coiling temperature.
The present invention sets the method becoming target coiling temperature, wherein said head compensation temperature t along strip steel total lengthh_addGive
Determine value range and be 0～30 DEG C.
The present invention sets the method becoming target coiling temperature, wherein said head length l along strip steel total lengthhGiven range
It is worth for 10～80.
The present invention sets the method becoming target coiling temperature, wherein said tail length l along strip steel total lengthtGiven range
It is worth for 0～100.
The present invention sets the method becoming target coiling temperature, wherein said tail temperature slope k along strip steel total lengthtGiven
Value range is 0.05～0.35.
The present invention sets the method becoming target coiling temperature, wherein said afterbody compensation temperature t along strip steel total lengtht_addGive
Determine value range and be -5～20 DEG C.
The present invention sets the method becoming target coiling temperature by changing head compensation temperature, head length along strip steel total length
The target setting that degree, the parameter end to end of afterbody compensation temperature, tail length, tail temperature slope can change head-tail batches temperature
Degree, reaches the automatic compensation of strip steel head-tail coiling temperature deviation, improves the control accuracy of strip steel total length coiling temperature, easily exists
Popularization and application in same type temperature control system.
The invention will be further described below in conjunction with the accompanying drawings.
Brief description
Fig. 1 is that in the embodiment of the present invention, strip steel total length becomes target setting coiling temperature schematic diagram；
Fig. 2 is the flow chart of the embodiment of the present invention.
Specific embodiment
The method that the present invention sets change target coiling temperature along strip steel total length comprises the following steps:
According to target control point apart from the length of strip steel head, judge the position of target control point,
According to the position of target control point, select corresponding compensation temperature and slope, the temperature calculating target control point is mended
Repay value,
The temperature compensation value of target control point is added on target coiling temperature as the target setting that target control point is new
Coiling temperature,
Carry out setup algorithm.
The present invention sets the method becoming target coiling temperature, the step wherein judging target control point position along strip steel total length
As follows:
(1) calculate strip length lstrip,
(2) set strip steel head length lhWith tail length lt,
(3) length setting target control point apart from strip steel head is as li, work as li≤lhWhen, represent that target control point is located at band
In steel head length range；Work as lh＜ li≤lstrip-ltWhen, represent that target control point is located in strip steel mid range；Work as lstrip-
lt＜ li≤lstripWhen, represent that target control point is located in tail part of band steel length range.
The present invention sets, along strip steel total length, the method becoming target coiling temperature, wherein calculates the temperature-compensating of target control point
The step of value is as follows:
(1) create temperature-compensating layer file, by steel grade, thickness, deceleration and roll rear target cooling temperature drop to carry out layer other
Index,
(2) retrieve head compensation temperature th_add, head length lh, afterbody compensation temperature tt_add, tail length lt, afterbody temperature
Degree slope ktTotally 5 parameters,
(3) calculate head temperature slope kh,
(4) when target control point is located in strip steel head length range, the temperature compensation value △ t of target control pointi=
th_add+kh×li,
When in length range in the middle part of target control point is located at strip steel, the temperature compensation value △ t of target control pointi=th_add
+kh×lh=0,
When target control point is located in tail part of band steel length range, the temperature compensation value △ t of target control pointi=th_add
+kh×lh+kt×[li-(lstrip-lt)].
The present invention sets, along strip steel total length, the method becoming target coiling temperature, wherein by the temperature compensation value of target control point
It is added on target coiling temperature after as the new target setting coiling temperature of target control point, also will check new target setting volume
Taking the effectiveness of temperature, judge it whether in the range of 300～800 DEG C, if exceeding bound scope, taking bound as new
Target setting coiling temperature.
The present invention sets the method becoming target coiling temperature, wherein said head compensation temperature t along strip steel total lengthh_addGive
Determine value range and be 0～30 DEG C, mainly with belt steel thickness for main basis of design, reduce with belt steel thickness, set-point increases.
The present invention sets the method becoming target coiling temperature, the given range of wherein said head length lh along strip steel total length
It is worth for 10～80, mainly with belt steel thickness for main basis of design, reduce with belt steel thickness, set-point increases.
The present invention sets the method becoming target coiling temperature, the given range of wherein said tail length lt along strip steel total length
It is worth for 0～100, mainly with belt steel thickness, the rate of deceleration, target cooling temperature drop for main basis of design, with belt steel thickness
Reduce, rate of deceleration absolute value is bigger, target cooling temperature drop is bigger, and set-point increases.
The present invention sets, along strip steel total length, the method becoming target coiling temperature, wherein said tail temperature slope k t given
Value range is 0.05～0.35, mainly with belt steel thickness, the rate of deceleration, target cooling temperature drop for main basis of design, with band
Steel thickness reduces, and rate of deceleration absolute value is bigger, target cooling temperature drop is bigger, and set-point increases.
The present invention sets, along strip steel total length, the method becoming target coiling temperature, wherein said afterbody compensation temperature tt_add
Given range value is -5～20 DEG C, mainly with belt steel thickness, the rate of deceleration, target cooling temperature drop for main basis of design, with
Belt steel thickness reduces, and rate of deceleration absolute value is bigger, target cooling temperature drop is bigger, and set-point increases.
The present invention sets the method becoming target coiling temperature by changing head compensation temperature, head length along strip steel total length
The target setting that degree, the parameter end to end of afterbody compensation temperature, tail length, tail temperature slope can change head-tail batches temperature
Degree, reaches the automatic compensation of strip steel head-tail coiling temperature deviation, improves the control accuracy of strip steel total length coiling temperature, easily exists
Popularization and application in same type temperature control system.
With reference to embodiment, the invention will be further described:
As shown in figure 1, and combine Fig. 2 shown in, the present invention along strip steel total length set become target coiling temperature method, including
Following steps:
Step s1: calculate strip length l firststrip, according to size of plate blank and trimmed size, using constancy of volume principle and
Lumber recovery is calculated strip length lstrip；
Step s2: the steel grade of acquisition strip steel, target thickness, target water-cooled temperature drop, the afterbody rate of deceleration, are from model file
Read data to prepare；
Step s3: open model file, according to the strip steel information obtaining in step s2, read the model ginseng meeting condition
Number, 5 altogether, respectively head compensation temperature th_add, head length lh, afterbody compensation temperature tt_add, tail length lt, afterbody
Temperature slope kt；
Step s4: head compensation temperature t being read according to step s3h_addWith head length lh, it is calculated head temperature
Slope kh；
Step s5: according to target control point apart from strip steel head length li, obtain target control point position；
Step s6: first determine whether whether target control point position is located in strip steel head length range, if calculating target
The temperature compensation value at control point；Otherwise then judge whether target control point position is located in length range in the middle part of strip steel, if,
Calculate the temperature compensation value of target control point；Otherwise judge that target control point is located in tail part of band steel length range, if calculating
The temperature compensation value of target control point, otherwise temperature compensation value △ ti=0；
Step s7: calculated for step s6 temperature compensation value is added with target coiling temperature, obtains target control point
New target setting coiling temperature；
Step s8: validity check is carried out to new target setting coiling temperature, when this value meets 300～800 DEG C, directly
Connect using this value, if exceed bound, capping value or lower limit are used as new target setting coiling temperature；
Step s9: enter setup algorithm.
Parameter head compensation temperature t wherein in step s3h_add, head length lh, afterbody compensation temperature tt_add, tail length
lt, tail temperature slope kt, the foundation of its modification is exactly strip steel head-tail temperature control in claimed range.If temperature occurs surpass
The upper limit, then reduce relevant parameter；If the super lower limit of temperature occurs, increase relevant parameter.
By the enforcement of previous step, improve the adaptability to raising speed, down speeding procedure for the model, improve strip steel total length and batch
The control accuracy of temperature, the steady quality for thin gauge strip provides powerful guarantee.
Embodiment described above is only that the preferred embodiment of the present invention is described, the not model to the present invention
Enclose and be defined, on the premise of without departing from design spirit of the present invention, the technical side to the present invention for the those of ordinary skill in the art
Various modifications and improvement that case is made, all should fall in the protection domain of claims of the present invention determination.
Claims (9)
1. a kind of method along strip steel total length setting change target coiling temperature is it is characterised in that comprise the following steps:
According to target control point apart from the length of strip steel head, judge the position of target control point,
According to the position of target control point, select corresponding compensation temperature and slope, calculate the temperature compensation value of target control point,
The temperature compensation value of target control point is added to and batches as the new target setting of target control point on target coiling temperature
Temperature,
Carry out setup algorithm.
2. the method along strip steel total length setting change target coiling temperature according to claim 1 is it is characterised in that judge mesh
The step of mark control point position is as follows:
(1) calculate strip length lstrip,
(2) set strip steel head length lhWith tail length lt,
(3) length setting target control point apart from strip steel head is as li, work as li≤lhWhen, represent that target control point is located at band steel toe
In the range of minister's degree；Work as lh＜ li≤lstrip-ltWhen, represent that target control point is located in strip steel mid range；Work as lstrip-lt＜
li≤lstripWhen, represent that target control point is located in tail part of band steel length range.
3. according to claim 2 setting along strip steel total length becomes the method for target coiling temperature it is characterised in that calculating mesh
The step of the temperature compensation value at mark control point is as follows:
(1) create temperature-compensating layer file, by steel grade, thickness, deceleration and roll rear target cooling temperature drop and carry out layer and do not index,
(2) retrieve head compensation temperature th_add, head length lh, afterbody compensation temperature tt_add, tail length lt, tail temperature oblique
Rate ktTotally 5 parameters,
(3) calculate head temperature slope kh,
(4) when target control point is located in strip steel head length range, the temperature compensation value △ t of target control pointi=th_add+
kh×li,
When in length range in the middle part of target control point is located at strip steel, the temperature compensation value △ t of target control pointi=th_add+kh×
lh=0,
When target control point is located in tail part of band steel length range, the temperature compensation value △ t of target control pointi=th_add+kh×
lh+kt×[li-(lstrip-lt)].
4. according to claim 3 setting along strip steel total length becomes the method for target coiling temperature it is characterised in that by target
The temperature compensation value at control point is added on target coiling temperature after as the new target setting coiling temperature of target control point, also will
Check the effectiveness of new target setting coiling temperature, judge it whether in the range of 300～800 DEG C, if exceeding bound model
Enclose, take bound as new target setting coiling temperature.
5. according to claim 4 along strip steel total length set become target coiling temperature method it is characterised in that: described head
Portion's compensation temperature th_addGiven range value be 0～30 DEG C.
6. according to claim 5 along strip steel total length set become target coiling temperature method it is characterised in that: described head
Minister degree lhGiven range value be 10～80.
7. according to claim 6 along strip steel total length set become target coiling temperature method it is characterised in that: described tail
Minister degree ltGiven range value be 0～100.
8. according to claim 7 along strip steel total length set become target coiling temperature method it is characterised in that: described tail
Portion temperature slope ktGiven range value be 0.05～0.35.
9. according to claim 8 along strip steel total length set become target coiling temperature method it is characterised in that: described tail
Portion's compensation temperature tt_addGiven range value be -5～20 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728807.6A CN106363024A (en) | 2016-08-26 | 2016-08-26 | Method for setting variable-aim coiling temperature along the total length of strip steel |
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|---|---|---|---|
| CN201610728807.6A CN106363024A (en) | 2016-08-26 | 2016-08-26 | Method for setting variable-aim coiling temperature along the total length of strip steel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716561A (en) * | 2017-09-15 | 2018-02-23 | 首钢京唐钢铁联合有限责任公司 | Strip Steel Coiling Temperature control method, device, computer-readable storage medium and equipment |
| CN112207137A (en) * | 2020-08-24 | 2021-01-12 | 河钢股份有限公司承德分公司 | Band steel curling temperature control method, terminal equipment and readable storage medium |
| WO2021017262A1 (en) * | 2019-07-31 | 2021-02-04 | 首钢京唐钢铁联合有限责任公司 | Strip steel coiling temperature control method and apparatus and strip steel machining system |
| CN115228929A (en) * | 2022-07-29 | 2022-10-25 | 广西广盛新材料科技有限公司 | Temperature control method and device for strip steel production, terminal equipment and storage medium |
| TWI786580B (en) * | 2021-03-26 | 2022-12-11 | 中國鋼鐵股份有限公司 | Method for estimating an outlet temperature of a finishing mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107716561A (en) * | 2017-09-15 | 2018-02-23 | 首钢京唐钢铁联合有限责任公司 | Strip Steel Coiling Temperature control method, device, computer-readable storage medium and equipment |
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Application publication date: 20170201 |