CN105327949B - A kind of flow control methods of hot steel strip coiling temperature - Google Patents
A kind of flow control methods of hot steel strip coiling temperature Download PDFInfo
- Publication number
- CN105327949B CN105327949B CN201510831607.9A CN201510831607A CN105327949B CN 105327949 B CN105327949 B CN 105327949B CN 201510831607 A CN201510831607 A CN 201510831607A CN 105327949 B CN105327949 B CN 105327949B
- Authority
- CN
- China
- Prior art keywords
- flow
- collector
- coiling temperature
- group
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
-
- 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
- B21B2037/002—Mass flow control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention provides a kind of flow control methods of hot steel strip coiling temperature, belong to automation of rolling control technology field.This method includes：Slab PDI data, device parameter and coiling temperature model parameter are read, the measured value of the pyrometer when strip reaches finish rolling entrance and outlet is extracted；Determine that the starting valve and collector configuration flow of the material specification give；According to each group collector given flow and coiling temperature model, each group collector convection transfer rate is determined；Total flow needed for batching entrance temperature drop is exported to from finish rolling according to the calculating of coiling temperature model；It is determined that the valve opening sum needed for cooling temperature drop, is sent to one-level basic automatization by setting configuration and performs；Feedback calculating, adjustment accurate adjustment area collector open and-shut mode, it is ensured that target coiling temperature are carried out according to actual coiling temperature.The inventive method may be such that coiling temperature norm controlling is stable, it is ensured that change first piece of strip of specification and think gauge can smooth transition, and improve coiling temperature hit rate, improve product quality performance.
Description
Technical field
The present invention relates to a kind of flow control methods of hot steel strip coiling temperature, belong to automation of rolling control technology neck
Domain.
Background technology
Coiling temperature is to influence the important technical parameter of strip structure property, is also the important finger in hot rolling production control
Mark.In hot-strip production, the configuration that the control of coiling temperature relies primarily on section cooling collector group is timely opened and closed
Regulation, in order to obtain the product of acceptable performance, it is necessary to which quantity and flow to collector configuration carry out high-precision control.Typically
Ground, each group main valve of section cooling battery limits is pneumatic open and close valve, and the control to valve opening and flow is to debug or examining
Manual adjustment during repairing, and each group valve flow is adjusted substantially equal, the setting of section cooling model is in each group stream
The equal assumed condition of amount is carried out.
Wang Qiang discloses 1780 hot-rolling coiling temperature control systems in May, 2007, slave unit situation, systemic-function and cold
But the laminar cooling system of 1780 hot rollings is described in terms of model.In order that different steel grades, the strip of different size
Preferable cooling effect is attained by, laminar cooling system more steel grade endothermic character, thickness and coiling temperature situation are divided not
Same layer is other.When slab is extracted out from heating furnace and reaches the tracing area specified, corresponding calculate and setting is performed：Initially
Valve mode setting, the setting of dynamic valve pattern, feedback control and self study.Shi Rui, Yin Wei, Cai Liang are disclosed in January, 2012
The research of 1780 Coiling Temperature of Hot Tandem Rolled Strip Controlling models, teaches the control transformation of this steel 1780 Coiling Temperature of Hot Tandem Rolled Strip
The mathematical formulae and practical effect of laminar flow cooling control model afterwards.Oiler temperature control mainly has 5 parts：If
Fixed, coiling temperature feedforward control, coiling temperature feedback control (accurate adjustment), finishing temperature feedback control, self study；Coiling temperature control
Simulation is using some mathematical modelings come the cold water spray configuration of computation layer.
In existing Strip Steel Coiling Temperature control technology, first piece of strip of specification and heavy gauge steel strip coiling temperature are changed in production
High-precision control is still difficult point, and coiling temperature curve is also unstable.The Chinese patent application of Publication No. 102166582 is 2011
On August discloses to use in a kind of method for improving control precision of coiling temperature, this method for 31 successively decreases setting along rolling direction
Each group collector water-carrying capacity and the different cooling strategy of corresponding selection simultaneously match heat transfer coefficient, to ensure the feelings of the main cold energy power of leading portion
Control precision of coiling temperature is improved under condition.In the given parameters of each group collector water-carrying capacity, a certain value range is simply given, and
And the value range of certain section of collector group flow is the same, such setting is improper for the more enterprise of production material specification
, so it needs to be determined that rational flow gives, preferably to improve control precision of coiling temperature.
The content of the invention
It is an object of the invention to provide a kind of flow of hot steel strip coiling temperature to locking control method, unlike material is solved
The strip of specification needs the given difference of cooling water inflow, so that because collector opening and closing easily causes coiling temperature norm controlling unstable
The problem of.It is rolling scaduled during gradually changing from thin to thick, by determining each group given flow and starting valve and cold
But strategy is given, has both ensured the ability that leading portion big flow is quickly cooled down, and again water caused by back segment valve opening and closing is fluctuated
It is smaller, so that coiling temperature norm controlling is stable, and improves coiling temperature hit rate, improve product quality performance.
The present invention is on the basis of existing hot steel strip coiling temperature Controlling model, according to certain hot rolling field apparatus condition
And actual production and experimental data, return the correspondence pass for obtaining strip cooling temperature drop and each collector group flow under different starting valves
It is, there is provided the method that a kind of flow of hot steel strip coiling temperature is controlled, to comprise the following steps：
Step 1, slab PDI data, device parameter and coiling temperature model parameter are read, extracts and enters when strip reaches finish rolling
The measured value of pyrometer when mouth and outlet；
Wherein, slab PDI packets rubbing board base number, steel grade, slab specification, product objective thickness, finish to gauge target temperature and
Batch target temperature；
Step 2, determine that the starting valve and collector configuration flow of the material specification give；
By inquiring about the layer other table related to steel grade and finished product thickness, it is determined which of collector group to organize which root as from
Beginning valve.
The given flow Flow of i-th group of collectoriCalculation formula be：
Wherein, A0Represent that lower collector pipe flow is consistent in first group of upper header given flow, setting, C0Given for collector group flow
Determine coefficient factor.
Last collector group is the 35% of valve opening as feedback accurate adjustment section, given flow.
Step 3, according to each group collector given flow and coiling temperature model, each group collector convection transfer rate is determined；
Step 4, total flow needed for batching entrance temperature drop is exported to from finish rolling according to the calculating of coiling temperature model；
Step 5, it is determined that the valve opening needed for cooling temperature drop is total, the setting configuration that collector is originated into valve and valve opening number is sent to
One-level basic automatization is performed；
Step 6, feedback calculating, adjustment accurate adjustment area collector open and-shut mode, it is ensured that target volume are carried out according to actual coiling temperature
Take temperature.
The present invention is by the given control coiling temperature of each group collector flow, improving hot steel strip coiling temperature hit
Rate, the coiling temperature curve for especially changing first piece of specification and heavy gauge steel strip is opened and closed caused temperature in dynamically setting by collector
Very little is fluctuated, a kind of given control method of coiling temperature flow is realized, the present invention compared with the conventional method, there is following positive
Effect：
(1) under the conditions of existing equipment, this method propose can be to the strategy of the first follow-up slow cooling of rapid cooling of strip, coiling temperature
Curve is steady, it is ensured that the coiling temperature and uniformity of strip, and improves properties of product；
(2) when different flow is set to each collector group and starting valve is determined according to material specification, this method disclosure satisfy that not
The high-precision water of strip of same material specification gives, and the given curve is power function, leading portion cooling manifold group flow set-point
Distinguish obvious, big flow rapid cooling can be met, it is gentle that follow-up collector group gives water decline trend, it is ensured that the cooling capacity of think gauge
While, moreover it is possible to slowing down the water fluctuation caused by dynamically setting opening and closing manifold applications causes temperature instability problem.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the flow control methods of the hot steel strip coiling temperature of the present invention；
Fig. 2 is that each group collector flow gives schematic diagram.
Embodiment
Below according to embodiment and respective drawings, the present invention is further described.
The method of the flow control of a kind of hot steel strip coiling temperature of the present invention, as shown in figure 1, illustrating each step below.
Step 1, slab PDI data, equipment and coiling temperature Parameters in Mathematical Model are read, strip arrival finishing mill is extracted and enters
The measured value of pyrometer when mouth and outlet, is that data preparation is done in model calculating.
Slab PDI packet rubbing boards base number, steel grade, slab specification, product objective thickness, finish to gauge target temperature and batch mesh
Mark temperature etc..Device parameter is primarily referred to as the relevant parameter of section cooling area equipment collector, including collector group number, collector root
Number, header length and collector maximum stream flow etc..Coiling temperature model parameter includes convection transfer rate, self study coefficient, environment
Temperature factor of influence etc., the parameter needed according to specific selected coiling temperature model read.
Step 2, determine that the starting valve and collector configuration flow of the material specification give.
Starting valve is inquired about by the other table of the layer related to steel grade and finished product thickness, and confirmation organizes the from which of collector group
Several are used as starting valve.
For example：The starting valve layer that straight carbon steel Q235B finished product target thicknesses are 3mm is not worth for (1,1), and it is meant that from collector
First group first of group is used as starting valve water spray.
The given flow Flow of i-th group of collectoriCalculation formula be：
Wherein, A0Represent first group of upper header given flow, it is assumed that upper lower collector pipe flow is consistent；C0For collector configuration flow
Given coefficient factor.
It should be noted that collector group flow gives coefficient -0.27606, it is, according to existing equipment and production requirement, to pass through
Mass data, which is fitted, to be come, therefore, and the difference divided according to section cooling area collector group number and cooling capacity micro can be corrected
C0, C0For positive number, span is [0.5,1.5].
Target temperature is batched in order to better control over, last collector group is generally valve as feedback accurate adjustment section, given flow
The 35% of aperture.
Step 3, according to each group collector given flow and coiling temperature model, each group collector convection transfer rate is determined；
Step 4, total flow needed for batching entrance temperature drop is exported to from finish rolling according to the calculating of coiling temperature model；
Step 5, the valve opening sum needed for collector starting valve and cooling temperature drop is determined, such setting configuration is sent to one
Level basic automatization is performed；
Step 6, feedback calculating, adjustment accurate adjustment area collector open and-shut mode, it is ensured that target volume are carried out according to actual coiling temperature
Take temperature.As shown in figure 1, calculate it is actual batch inlet temperature, when meeting target temperature range, terminate coiling temperature control
System, if being unsatisfactory for target temperature range, continues to go to step 4 execution, until meeting target temperature range.
Embodiment
The present invention is illustrated as follows by taking certain hot rolling line of middle width strip 950 as an example with reference to Fig. 2：
Step 1, slab PDI data are read, slab number is YG151004366, and steel grade is 08AL, and slab specification is 165*
770*10000mm, product objective thickness is 3.0mm, and 865 DEG C of finish to gauge target temperature batches 550 DEG C of target temperature, reads equipment
Constant and coiling temperature Parameters in Mathematical Model, it is 988 DEG C that slab, which reaches finishing mill front entrance pyrometer measured value, reaches finishing mill
It is 851 DEG C to export pyrometer measured value；Layer cold area totally 15 groups of collectors, preceding 13 groups every group 4 cooling units, latter two groups every group 8
Cooling unit, and flowmeter has been equipped with for every group of collector, by flowmeter can preferably examine inventive flow to
Locking control method.
Step 2, determine that the starting valve and collector configuration flow of the material specification give；
Originate valve to inquire about by the other table of the layer related with thickness to steel grade, confirm from the 5th group the 1st as starting valve.
Assuming that lower collector pipe flow set is consistent in each group, A0Take first group of upper header given flow 116.18m3/ h, C0For collection
Pipe configuration flow gives coefficient factor, and value is 1.0, then the given calculation formula of upper header flow is：
Flowi=116.18 × i-0.27606×1.0
Wherein, i represents i-th group of collector, FlowiI-th group of collector given flow is represented, unit is m3/h。
Obtain that each collector given flow is as follows according to formula above, unit is m3/h：
Flow1=116；Flow2=96；Flow3=88；Flow4=80；
Flow5=75；Flow6=71；Flow7=68；Flow8=65；Flow9=63；Flow10=62；
Flow11=59；Flow12=58；Flow13=57；Flow14=56；Flow15=35.
Step 3, it is given according to each group collector flow, determine each group collector convection transfer rate between 0.8-1.2；
Step 4, total flow needed for batching entrance temperature drop is exported to from finish rolling according to the calculating of coiling temperature model, it is default to be set to
942m3/h。
Step 5, determine that collector starting valve is 5, valve opening number is default be set to above and below collector totally 32, wherein 26, coarse adjustment area,
6, accurate adjustment area, micro adjustment during dynamic setting；
Step 6, feedback calculating, adjustment accurate adjustment area collector open and-shut mode, it is ensured that target volume are carried out according to actual coiling temperature
Take 550 DEG C of temperature.
Using a kind of reeling temperature controlling method of the present invention using the different given flows of different collector groups so that change specification
The coiling temperature curve of first piece and heavy gauge steel strip improves hot-strip and batched in temperature fluctuation very little caused by collector opening and closing
Temperature hit rate.
Above examples describe the embodiment of the present invention, it should be understood that, specific description here is not
The restriction to the spirit and scope of the invention is construed as, one of ordinary skilled in the art is upon review of the specification to upper
The various modifications that example is made are stated, the scope that the present invention is protected is belonged to.
Claims (3)
1. a kind of flow control methods of hot steel strip coiling temperature, it is characterised in that realize that step is as follows：
Step 1, slab PDI data, device parameter and coiling temperature model parameter are read, extract when strip reach finish rolling entrance and
The measured value of pyrometer during outlet；
Wherein, slab PDI packets rubbing board base number, steel grade, slab specification, product objective thickness, finish to gauge target temperature and batch
Target temperature；
Step 2, determine that the starting valve and collector configuration flow of strip material specification give；
By inquiring about the layer other table related to steel grade and finished product thickness, it is determined which of collector group to organize which root as starting from
Valve；
The given flow Flow of i-th group of collectoriCalculation formula be：Wherein, A0Represent to collect on first group
Lower collector pipe flow is consistent in pipe given flow, setting；C0Coefficient factor is given for collector group flow；
Step 3, according to each group collector given flow and coiling temperature model, each group collector convection transfer rate is determined；
Step 4, total flow needed for batching entrance temperature drop is exported to from finish rolling according to the calculating of coiling temperature model；
Step 5, it is determined that the valve opening needed for cooling temperature drop is total, the setting configuration that collector is originated into valve and valve opening number is sent to one-level
Basic automatization is performed；
Step 6, feedback calculating, adjustment accurate adjustment area collector open and-shut mode, it is ensured that target batches temperature are carried out according to actual coiling temperature
Degree.
2. the flow control methods of a kind of hot steel strip coiling temperature according to claim 1, it is characterised in that described
In step 2, the flow for giving end collector group is the 35% of valve opening.
3. the flow control methods of a kind of hot steel strip coiling temperature according to claim 1, it is characterised in that described
In step 2, C is set0Span be [0.5,1.5].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510831607.9A CN105327949B (en) | 2015-11-25 | 2015-11-25 | A kind of flow control methods of hot steel strip coiling temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510831607.9A CN105327949B (en) | 2015-11-25 | 2015-11-25 | A kind of flow control methods of hot steel strip coiling temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105327949A CN105327949A (en) | 2016-02-17 |
| CN105327949B true CN105327949B (en) | 2017-08-22 |
Family
ID=55278826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510831607.9A Active CN105327949B (en) | 2015-11-25 | 2015-11-25 | A kind of flow control methods of hot steel strip coiling temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105327949B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019002910A1 (en) * | 2017-06-26 | 2019-01-03 | Arcelormittal | Method and electronic device for determining the temperature of a metal strip, related control method, computer program, control apparatus and hot rolling installation |
| CN107999547B (en) * | 2018-01-16 | 2023-10-13 | 中冶赛迪电气技术有限公司 | Laminar cooling self-learning method and device |
| DE102018219276A1 (en) | 2018-03-12 | 2019-09-12 | Sms Group Gmbh | Cooling group of a laminar cooling device |
| CN110064668B (en) * | 2019-04-25 | 2020-08-28 | 河钢股份有限公司承德分公司 | Coiling temperature control method and terminal equipment |
| CN110877055B (en) * | 2019-10-31 | 2020-12-22 | 河钢股份有限公司承德分公司 | Method for improving hot-rolled steel strip tail coiling temperature hit |
| CN110814053B (en) * | 2019-11-15 | 2021-04-20 | 中冶华天工程技术有限公司 | Intelligent calculation method for reverse self-decision temperature control of bar water tank based on trial and error method |
| CN110883105B (en) * | 2019-11-15 | 2021-06-08 | 中冶华天工程技术有限公司 | Method for adjusting parameters of controlled cooling optimizing water tank of hot-rolled deformed steel bar in real time after rolling |
| CN113649421B (en) * | 2021-07-07 | 2023-04-18 | 阳春新钢铁有限责任公司 | Control system and method for temperature drop compensation of finish rolling inlet |
| CN113857264A (en) * | 2021-09-27 | 2021-12-31 | 日照宝华新材料有限公司 | SPA-H hot-rolled coil shape control method |
| CN114535316B (en) * | 2022-02-08 | 2023-10-03 | 邯郸钢铁集团有限责任公司 | Coiling temperature control method for hot-rolled high-strength dual-phase steel |
| CN114850226A (en) * | 2022-03-03 | 2022-08-05 | 河钢乐亭钢铁有限公司 | Steel rolling process controlled cooling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004518023A (en) * | 2000-12-27 | 2004-06-17 | ポスコ | Method and apparatus for producing hot rolled steel strip |
| CN101381806A (en) * | 2007-09-06 | 2009-03-11 | 中冶赛迪工程技术股份有限公司 | Refrigerating device of belt steel and cooling and controlling method thereof |
| CN102166582A (en) * | 2010-12-13 | 2011-08-31 | 河北省首钢迁安钢铁有限责任公司 | Method for improving control precision of coiling temperature |
| CN102513385A (en) * | 2011-12-29 | 2012-06-27 | 一重集团大连设计研究院有限公司 | Design method of hot-rolling strip steel rolled cooling line |
| CN103286147A (en) * | 2013-06-26 | 2013-09-11 | 重庆钢铁(集团)有限责任公司 | Hot-rolled board strip production line laminar cooling method |
-
2015
- 2015-11-25 CN CN201510831607.9A patent/CN105327949B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004518023A (en) * | 2000-12-27 | 2004-06-17 | ポスコ | Method and apparatus for producing hot rolled steel strip |
| CN101381806A (en) * | 2007-09-06 | 2009-03-11 | 中冶赛迪工程技术股份有限公司 | Refrigerating device of belt steel and cooling and controlling method thereof |
| CN102166582A (en) * | 2010-12-13 | 2011-08-31 | 河北省首钢迁安钢铁有限责任公司 | Method for improving control precision of coiling temperature |
| CN102513385A (en) * | 2011-12-29 | 2012-06-27 | 一重集团大连设计研究院有限公司 | Design method of hot-rolling strip steel rolled cooling line |
| CN103286147A (en) * | 2013-06-26 | 2013-09-11 | 重庆钢铁(集团)有限责任公司 | Hot-rolled board strip production line laminar cooling method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105327949A (en) | 2016-02-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105327949B (en) | A kind of flow control methods of hot steel strip coiling temperature | |
| RU2291750C2 (en) | Control method for finishing line stands arranged in front of cooling section and designed for rolling hot rolled metal strip | |
| CN101347822B (en) | Method for testing on-line temperature field of bloom continuous casting and method for controlling secondary cooling water | |
| Peng et al. | Strip shape modeling and its setup strategy in hot strip mill process | |
| CN105522003B (en) | Inexpensive hot-strip sub-sectional cooling control method | |
| JP5059254B2 (en) | Method and system for controlling a cooling zone | |
| CN103170508B (en) | Method for controlling width of hot rolling strip steel | |
| CN102513384B (en) | Method for cooling intermediate billet of medium-thickness plate by using equipment for cooling after rolling | |
| CN107971345B (en) | Process control system and control method for steel pipe on-line cooling | |
| CN102513385B (en) | Design method of hot-rolling strip steel rolled cooling line | |
| CN103406370B (en) | FHM-based (fuzzy hyperbolic model-based) cold-rolling mill working roll emulsion sectional cooling control method | |
| CN103559334B (en) | Modeling method and system for temperature field in laminar cooling | |
| CN103071683A (en) | Comprehensive adjustment rolling technology for double-frame S-shaped four-roll cold rolling mill | |
| CN105344720B (en) | A kind of On-Line Control Method of fine-rolling strip steel finishing temperature | |
| CN102363161B (en) | Ultrafast cooling control method for H-shaped steel | |
| CN107626751B (en) | The control method of hot-rolling line ultra-rapid cooling | |
| KR100643373B1 (en) | Method of controlling longitudinal direction temperature of thick hot-rolled steel plate | |
| CN106557651B (en) | A kind of optimization method and device of roller temperature model cootrol precision | |
| CN108421830B (en) | Self-adaptive control method and device | |
| TWI754979B (en) | Method of controlling a cooling device in a rolling train | |
| JPS63168211A (en) | Temperature control method for hot rolling process | |
| CN105695728A (en) | Devices and method of online steel plate solution treatment process control system | |
| JP2012000663A (en) | Cooling control method for rolled material, and continuous rolling mill with the cooling control method applied | |
| JP2012011448A (en) | Cooling control method of rolled material, and continuous rolling mill to which the cooling control method is applied | |
| CN101811143A (en) | Temperature control method for heat-preservation casting blank to be rolled |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |