CN105499281B - The U-shaped control system of section cooling for hot-strip - Google Patents
The U-shaped control system of section cooling for hot-strip Download PDFInfo
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- CN105499281B CN105499281B CN201510896747.4A CN201510896747A CN105499281B CN 105499281 B CN105499281 B CN 105499281B CN 201510896747 A CN201510896747 A CN 201510896747A CN 105499281 B CN105499281 B CN 105499281B
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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
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Abstract
The invention discloses a kind of U-shaped control method of the section cooling for hot-strip, it is cooled down by the way that strip is set into five sections, wherein first paragraph is the head that cooling length is HL1, the chilling temperature of first paragraph is head chilling temperature T1, second segment is the header buffer that cooling length is HL2, the chilling temperature of second segment is header buffer domain chilling temperature T2, 3rd section is middle part of the cooling length for ML, 3rd section of chilling temperature is coiling temperature CT, 4th section is afterbody buffering area of the cooling length for TT1, 4th section of chilling temperature is afterbody buffer area chilling temperature T3, 5th section is afterbody of the cooling length for TT2, 5th section of chilling temperature is blade trailing cooling temperature T4.The invention also discloses a kind of U-shaped control system of the section cooling for hot-strip.Above-mentioned control method and system can effectively eliminate performance difference of the strip end to end with middle part.
Description
Technical field
The present invention relates to strip cooling technology, and in particular to a kind of U-shaped control method of section cooling for hot-strip
And system.
Background technology
In hot-strip production process, in order to further improve product quality and increase economic benefit, obtain high-quality
The mechanical performance of hot-strip, hot-strip is after last frame finishing mill is left, into coiling machine before, it is necessary to which hot strip steel is carried out soon
But, to control the coiling temperature of strip, the coiling temperature is that design temperature is also target coiling temperature to quickly cooling.It has been generally acknowledged that batch
Temperature control is higher as the smaller control accuracy of axle fluctuation range using design temperature, and controlled level is better, but also requires in band
Cooled down in the whole length of steel uniformly, to ensure the mechanical performance uniformity of strip.
But because hot-strip is finally deposited in the form of coil of strip, strip can more fully contact with air end to end,
Strip is caused significant difference occur with middle part performance end to end.
The content of the invention
It is U-shaped that technical problem to be solved of the embodiment of the present invention is the provision of a kind of section cooling for hot-strip
Control method and system, performance difference of the strip end to end with middle part can be effectively eliminated.
A kind of U-shaped control method of section cooling for hot-strip, is cooled down successively by the way that strip is set into five sections,
Wherein first paragraph is the head that cooling length is HL1, and the chilling temperature of first paragraph is head chilling temperature T1, and second segment is cooling
Length is HL2 header buffer, and the chilling temperature of second segment is header buffer domain chilling temperature T2, and the 3rd section is cooling length
The middle part for ML is spent, the 3rd section of chilling temperature is coiling temperature CT, and the 4th section is afterbody buffering area of the cooling length for TT1,
4th section of chilling temperature is afterbody buffer area chilling temperature T3, and the 5th section is afterbody of the cooling length for TT2, the 5th section
Chilling temperature is blade trailing cooling temperature T4.
Present invention also offers a kind of U-shaped control method of the section cooling for hot-strip, including:
Judge whether mm finishing mill unit F7 connects;And
If mm finishing mill unit F7 is connected, the distance between strip steel head and mm finishing mill unit F7 are persistently sensed;
Start head cooling technique when the distance between strip steel head and mm finishing mill unit F7 are equal to the first setting value D1, it is cold
But length is head H T cooling length HL1, and corresponding chilling temperature is head chilling temperature T1;
Start header buffer cooling when the distance between strip steel head and mm finishing mill unit F7 are equal to the second setting value D2
Technique, cooling length are the cooling length HL2 of header buffer, and chilling temperature is header buffer chilling temperature T2;
Start middle part cooling technique when the distance between strip steel head and mm finishing mill unit F7 are equal to the 3rd setting value D3, it is cold
But length is the cooling length ML at middle part, and chilling temperature is coiling temperature CT;
Start the cooling of afterbody buffering area when the distance between tail part of band steel and mm finishing mill unit F7 are equal to the 4th setting value D4
Technique, cooling length are the cooling length TL1 of afterbody buffering area, and chilling temperature is the chilling temperature T3 of afterbody buffering area;
Start blade trailing cooling technique when the distance between tail part of band steel and mm finishing mill unit F7 are equal to the 5th setting value D5, it is cold
But length is afterbody TT cooling length TL2, and chilling temperature is afterbody TT chilling temperature T4.
Further, also include before step " judging whether mm finishing mill unit F7 connects ":
Judge whether mm finishing mill unit F1 connects;And
If judging, mm finishing mill unit F1 is connected, and reading model parameter, the model parameter includes head H T cooling length
HL1 and corresponding chilling temperature T1, the cooling length HL2 of header buffer and corresponding chilling temperature T2, afterbody buffering area
Cooling length TL1 and corresponding chilling temperature T3, afterbody TT cooling length TL2 and corresponding chilling temperature T4, middle part it is cold
But length ML and coiling temperature CT.
Wherein, step " reading model parameter " includes reading basic model parameter and U-shaped cooling jig parameter simultaneously, basis
Model parameter, which includes the cooling length ML at middle part and coiling temperature CT, U-shaped cooling jig parameter, includes head H T cooling length
HL1 and corresponding chilling temperature T1, the cooling length HL2 of header buffer and corresponding chilling temperature T2, afterbody buffering area
Cooling length TL1 and corresponding chilling temperature T3, afterbody TT cooling length TL2 and corresponding chilling temperature T4.
Present invention also offers a kind of U-shaped control system of the section cooling for hot-strip, including:
Parameter module, for storing the cooling length ML at middle part, coiling temperature CT, head H T cooling length HL1 and right
Chilling temperature T1, the cooling length HL2 of header buffer and corresponding chilling temperature T2, the cooling length of afterbody buffering area answered
TL1 and corresponding chilling temperature T3, afterbody TT cooling length TL2 and corresponding chilling temperature T4;
Model parameter read module, for reading the parameter of parameter module memory storage;
Mm finishing mill unit F7 judge modules, for judging whether mm finishing mill unit F7 connects;
Distance sensing module, for persistently sensing the distance between strip steel head and mm finishing mill unit F7;And
Cool down execution module, for according to the strip steel head sensed by distance sensing module and mm finishing mill unit F7 it
Between distance and the parameter of the parameter module memory storage read by model parameter read module strip is cooled down.
Wherein, when the distance between the distance sensing module senses to strip steel head and mm finishing mill unit F7 are the first setting
During value D1, the cooling execution module starts head cooling technique, cooling length is head H T cooling length HL1, corresponding
Chilling temperature is head chilling temperature T1;When the distance sensing module senses between strip steel head and mm finishing mill unit F7 away from
During from equal to the second setting value D2, start header buffer cooling technique, cooling length be header buffer and cooling length
HL2, chilling temperature are header buffer domain chilling temperature T2;When the distance sensing module senses to strip steel head and finishing mill
When the distance between group F7 is equal to the 3rd setting value D3, start middle part cooling technique, cooling length is the cooling length at middle part
ML, chilling temperature are coiling temperature CT;When the distance sensing module senses between tail part of band steel and mm finishing mill unit F7 away from
During from equal to the 4th setting value D4, start afterbody buffering area cooling technique, cooling length is the cooling length of afterbody buffering area
TL1, chilling temperature are the chilling temperature T3 of afterbody buffering area;When the distance sensing module senses to tail part of band steel and finish rolling
When the distance between unit F7 is equal to the 5th setting value D5, start blade trailing cooling technique, the cooling that cooling length is afterbody TT is grown
TL2 is spent, chilling temperature is afterbody TT chilling temperature T4.
Further, the parameter module includes basic model parameter module and U-shaped cooling jig parameter module, the base
Plinth model parameter module internal memory contains middle part cooling length ML and coiling temperature CT, the U-shaped cooling jig parameter module internal memory
Contain head H T cooling length HL1 and corresponding chilling temperature T1, the cooling length HL2 of header buffer and corresponding cold
But temperature T2, the cooling length TL1 of afterbody buffering area and corresponding chilling temperature T3, afterbody TT cooling length TL2 and correspondingly
Chilling temperature T4.
Further, the control system also includes mm finishing mill unit F1 judge modules, the mm finishing mill unit F1 judge modules
For judging whether mm finishing mill unit F1 connects, if judging, mm finishing mill unit F1 is connected, and the model parameter read module starts to read
Take the parameter of parameter module memory storage.
The U-shaped control method of the above-mentioned section cooling for hot-strip and system are by by the chilling temperature on head, head
The chilling temperature of buffering area, the chilling temperature at middle part, the chilling temperature of afterbody buffering area, the chilling temperature of afterbody are arranged to different
Temperature value, and correspondingly different regions is cooled down using above-mentioned different temperature value, can reach and offset what the later stage occurred
The effect of performance difference.Set simultaneously as being provided between head and middle part between header buffer and middle part and afterbody
There is afterbody buffering area, therefore can prevent that high temperature fluctuates when control targe from switching, and further avoids the later stage from being likely to occur
Performance difference.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings;
Fig. 1 is the schematic diagram of the better embodiment for the U-shaped control method of section cooling that the present invention is used for hot-strip.
Fig. 2 is the flow chart of the better embodiment for the U-shaped control method of section cooling that the present invention is used for hot-strip.
Fig. 3 is the block diagram of the better embodiment for the U-shaped control system of section cooling that the present invention is used for hot-strip.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
First, before embodiment is described, it is necessary to which some herein presented terms are explained.Example
Such as:
If occur describing various elements using the term such as " first ", " second " herein, but these elements should not
Limited by these terms.These terms are only used for distinguishing an element and another element.Therefore, " first " element can also
It is referred to as " second " element without departing from the teachings of the present invention.
In addition, it is to be understood that when referring to an element " connection " or " coupled " to another element, it can be direct
Ground connects or is directly coupled to another element or there may also be intermediary element.An element is referred on the contrary, working as " directly
When connection " or " directly coupling " arrive another element, then in the absence of intermediary element.
The various terms occurred herein are used only for describing the purpose of specific embodiment and being not intended as to this
The restriction of invention.Unless context clearly dictates otherwise, then singulative is intended to also include plural form.
When using term " comprising " and/or " including " in this manual, these terms specify the feature, whole
Body, step, operation, the presence of element and/or part, but be also not excluded for more than one other feature, entirety, step, operation,
Element, part and/or the presence of its group and/or additional.
On embodiment:
It refer to shown in Fig. 1, for a kind of schematic diagram of the U-shaped control method of section cooling for hot-strip of the invention.
Strip is divided into head H T, header buffer, middle part, afterbody buffering area and afterbody TT, and wherein head H T cooling length is designated as
HL1, the cooling length of header buffer are designated as HL2, and the cooling length of afterbody buffering area is designated as TL1, afterbody TT cooling length
TL2 is designated as, the cooling length at middle part is designated as ML.
In order to effectively eliminate performance difference of the strip end to end with middle part, the present invention by strip be set to five sections carry out successively it is cold
But, wherein head H T chilling temperature T1, the chilling temperature T2 of header buffer, chilling temperature (the i.e. coiling temperature at middle part
CT), the chilling temperature T3 of afterbody buffering area, afterbody TT chilling temperature T4 are arranged to different temperature values, so both can reach
Offset the effect of the performance difference of later stage appearance.Simultaneously as header buffer and middle part are provided between head and middle part
Afterbody buffering area is provided between afterbody, therefore can prevent that high temperature fluctuates when control targe from switching, and further keeps away
Exempt from the performance difference that the later stage is likely to occur.
Specifically, please continue to refer to shown in Fig. 2, the present invention be used for the U-shaped control method of section cooling of hot-strip compared with
Good embodiment comprises the following steps:
Step S1:Judge whether mm finishing mill unit F1 connects.If mm finishing mill unit F1 is connected, then it represents that strip will enter finish rolling
Technological process, and perform step S2.If mm finishing mill unit F1 is not yet connected, then it represents that strip not yet enters finish-rolling process flow, and
Continue executing with step S1.
Step S2:Reading model parameter.For the ease of scrap build and upgrading, by basic model and U in present embodiment
Type cooling jig is by the way of separately designing.When needing the section cooling U type control methods using the present invention, read simultaneously
Take basic model parameter and U-shaped cooling jig parameter;When the U-shaped control method of section cooling of the present invention need not be used, only
Read basic model parameter.Wherein, basic model parameter includes middle part cooling length ML and coiling temperature CT, U-shaped cooling
The cooling length HL1 and corresponding chilling temperature T1 of model parameter including head H T, the cooling length HL2 of header buffer and
Corresponding chilling temperature T2, the cooling length TL1 of afterbody buffering area and corresponding chilling temperature T3, afterbody TT cooling length
TL2 and corresponding chilling temperature T4.
Step S3:Judge whether mm finishing mill unit F7 connects.If mm finishing mill unit F7 is connected, then it represents that strip will enter laminar flow
Cooling process, and perform step S4.If mm finishing mill unit F7 is not yet connected, then it represents that strip not yet enters laminar flow cooling technology
Flow, and continue executing with step S3.
Step S4:Strip steel head and the distance between afterbody and mm finishing mill unit F7 are persistently sensed, and according to institute in step S2
The model parameter of reading cools down to strip.Specifically, when the distance between strip steel head and mm finishing mill unit F7 are equal to the
Judge that strip enters head cooled region during one setting value D1, now start head cooling technique, chilling temperature is step
The head H T read in S2 cooling length HL1 and corresponding chilling temperature T1;When between strip steel head and mm finishing mill unit F7
Distance judge that strip enters header buffer cooled region when being equal to the second setting value D2, now start head buffering
Area's cooling technique, chilling temperature is by the cooling length HL2 of header buffer read in step S2 and corresponding chilling temperature
T2;Judge that strip enters middle part cooling zone when the distance between strip steel head and mm finishing mill unit F7 are equal to the 3rd setting value D3
Domain, now starts middle part cooling technique, and chilling temperature is by the cooling length ML at middle part that is read in step S2 and corresponding
Coiling temperature CT;Judge that strip enters tail when the distance between tail part of band steel and mm finishing mill unit F7 are equal to the 4th setting value D4
Portion's buffering area cooled region, now start afterbody buffering area cooling technique, chilling temperature is by the afterbody that is read in step S2
The cooling length TL1 of buffering area and corresponding chilling temperature T3;When the distance between tail part of band steel and mm finishing mill unit F7 are equal to the
Judge that strip enters blade trailing cooling region during five setting value D5, now start blade trailing cooling technique, chilling temperature is step
The afterbody TT read in S2 cooling length TL2 and corresponding chilling temperature T4.
The U-shaped control method of the above-mentioned section cooling for hot-strip is by head H T chilling temperature T1, header buffer
Chilling temperature T2, the chilling temperature CT at middle part, the chilling temperature T3 of afterbody buffering area, afterbody TT chilling temperature T4 be arranged to
Different temperature values, it so both can reach the effect for the performance difference for offsetting later stage appearance.Simultaneously as between head and middle part
It is provided between header buffer and middle part and afterbody and is provided with afterbody buffering area, the chilling temperature of two buffering area is set respectively
T2 and T3 are set to, therefore can prevent that high temperature fluctuates when control targe from switching, and further avoids what the later stage was likely to occur
Performance difference.
It refer to shown in Fig. 3, the present invention is used for the better embodiment bag of the U-shaped control system of section cooling of hot-strip
Mm finishing mill unit F1 judge modules 10, basic model parameter module 11, U-shaped cooling jig parameter module 12, model parameter is included to read
Module 15, mm finishing mill unit F7 judge modules 16, distance sensing module 17 and cooling execution module 18.
The mm finishing mill unit F1 judge modules 10 are used to judge whether mm finishing mill unit F1 connects, if mm finishing mill unit F1 is connected,
Then represent that strip will enter finish-rolling process flow;If mm finishing mill unit F1 is still connected, then it represents that strip not yet enters finish-rolling process
Flow.
The internal memory of basic model parameter module 11 contains middle part cooling length ML and coiling temperature CT.The U-shaped cooling
The internal memory of model parameter module 12 contains head H T cooling length HL1 and corresponding chilling temperature T1, header buffer cooling
Length HL2 and corresponding chilling temperature T2, the cooling length TL1 of afterbody buffering area and corresponding chilling temperature T3, afterbody TT
Cooling length TL2 and corresponding chilling temperature T4.The model parameter read module 15 is used to read basic model parameter module
11 and U-shaped cooling jig parameter module 12.
The mm finishing mill unit F7 judge modules 16 are used to judge whether mm finishing mill unit F7 connects, if mm finishing mill unit F7 is connected,
Then represent that strip will enter laminar flow cooling technology flow;If mm finishing mill unit F7 is not yet connected, then it represents that strip not yet enters layer
Flow cooling process.
The distance sensing module 17 is used to persistently sense the distance between strip steel head and mm finishing mill unit F7.The cooling
Execution module 18 be used for according to the distance between strip steel head for being sensed by distance sensing module 17 and mm finishing mill unit F7 with
And in the basic model parameter module 11 read by model parameter read module 15 and U-shaped cooling jig parameter module 12
The parameter of storage cools down to strip.Specifically, when the distance between strip steel head and mm finishing mill unit F7 are set equal to first
Start head cooling technique during definite value D1, cooling length is head H T cooling length HL1, and corresponding chilling temperature is head
Chilling temperature T1;Start head buffering when the distance between strip steel head and mm finishing mill unit F7 are equal to the second setting value D2
Area's cooling technique, cooling length be header buffer and cooling length HL2, chilling temperature is header buffer domain chilling temperature
T2;Start middle part cooling technique, cooling when the distance between strip steel head and mm finishing mill unit F7 are equal to the 3rd setting value D3
Length is the cooling length ML at middle part, and chilling temperature is coiling temperature CT;When the distance between tail part of band steel and mm finishing mill unit F7
Starting afterbody buffering area cooling technique during equal to the 4th setting value D4, cooling length is the cooling length TL1 of afterbody buffering area,
Chilling temperature is the chilling temperature T3 of afterbody buffering area;When the distance between tail part of band steel and mm finishing mill unit F7 are equal to the 5th setting
Start blade trailing cooling technique during value D5, cooling length is afterbody TT cooling length TL2, and chilling temperature is afterbody TT cooling
Temperature T4.
Embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize the present invention
The equivalent structure or equivalent flow conversion that specification and accompanying drawing content are made, or directly or indirectly it is used in other related technologies
Field, it is included within the scope of the present invention.
Claims (1)
- A kind of 1. U-shaped control system of section cooling for hot-strip, it is characterised in that:The control system includes:Parameter module, for storing the cooling length ML at middle part, coiling temperature CT, head H T cooling length HL1 and corresponding Chilling temperature T1, the cooling length HL2 of header buffer and corresponding chilling temperature T2, the cooling length TL1 of afterbody buffering area And corresponding chilling temperature T3, afterbody TT cooling length TL2 and corresponding chilling temperature T4;The parameter module includes basis Model parameter module and U-shaped cooling jig parameter module, the basic model parameter module internal memory contain middle part cooling length ML And coiling temperature CT, the U-shaped cooling jig parameter module internal memory contain head H T cooling length HL1 and corresponding cooling temperature Spend T1, the cooling length HL2 and corresponding chilling temperature T2 of header buffer, the cooling length TL1 of afterbody buffering area and correspondingly Chilling temperature T3, afterbody TT cooling length TL2 and corresponding chilling temperature T4;Model parameter read module, for reading the parameter of parameter module memory storage;Mm finishing mill unit F1 judge modules, the mm finishing mill unit F1 judge modules are used to judge whether mm finishing mill unit F1 connects, if sentencing Disconnected mm finishing mill unit F1 is connected, then the model parameter read module starts to read the parameter of parameter module memory storage;Mm finishing mill unit F7 judge modules, for judging whether mm finishing mill unit F7 connects;Distance sensing module, for persistently sensing strip steel head and the distance between afterbody and mm finishing mill unit F7;AndCool down execution module, for according to the strip steel head that is sensed by distance sensing module and afterbody and mm finishing mill unit F7 it Between distance and the parameter of the parameter module memory storage read by model parameter read module strip is cooled down;When The distance sensing module senses to the distance between strip steel head and mm finishing mill unit F7 be the first setting value D1 when, the cooling Execution module starts head cooling technique, and cooling length is head H T cooling length HL1, and corresponding chilling temperature is that head is cold But temperature T1;When the distance between the distance sensing module senses to strip steel head and mm finishing mill unit F7 are equal to the second setting value During D2, start header buffer cooling technique, cooling length is the cooling length HL2 in header buffer domain, and chilling temperature is head Portion buffer area chilling temperature T2;When the distance between described distance sensing module senses to strip steel head and mm finishing mill unit F7 etc. When the 3rd setting value D3, start middle part cooling technique, cooling length is the cooling length ML at middle part, and chilling temperature is to batch temperature Spend CT;When the distance between the distance sensing module senses to tail part of band steel and mm finishing mill unit F7 are equal to the 4th setting value D4 When, start afterbody buffering area cooling technique, cooling length is the cooling length TL1 of afterbody buffering area, and chilling temperature delays for afterbody Rush the chilling temperature T3 in area;When the distance between the distance sensing module senses to tail part of band steel and mm finishing mill unit F7 are equal to the During five setting value D5, start blade trailing cooling technique, cooling length is afterbody TT cooling length TL2, and chilling temperature is afterbody TT Chilling temperature T4.
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CN106734246B (en) * | 2016-11-21 | 2019-03-05 | 首钢京唐钢铁联合有限责任公司 | A method of reducing cold-rolled biphase steel color difference |
CN106623430B (en) * | 2016-12-02 | 2018-10-19 | 首钢集团有限公司 | A method of eliminating Galvanized Dual Phase Steel rough surface defect |
CN108160725A (en) * | 2017-12-25 | 2018-06-15 | 武汉钢铁有限公司 | A kind of laminar flow cooling control system |
CN110479773B (en) * | 2018-05-15 | 2020-10-27 | 宝山钢铁股份有限公司 | Method for controlling tail temperature of U-shaped cooling strip steel |
CN111702006B (en) * | 2020-05-15 | 2022-09-13 | 山西太钢不锈钢股份有限公司 | Rolling method for improving quality stability of steel plate coil |
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