CN109201750A - Hot rolling low temperature coiling band steel surface based on water area purges control method - Google Patents
Hot rolling low temperature coiling band steel surface based on water area purges control method Download PDFInfo
- Publication number
- CN109201750A CN109201750A CN201710524374.7A CN201710524374A CN109201750A CN 109201750 A CN109201750 A CN 109201750A CN 201710524374 A CN201710524374 A CN 201710524374A CN 109201750 A CN109201750 A CN 109201750A
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- water area
- image
- steel surface
- purging
- low temperature
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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
- B21B37/76—Cooling control on the run-out table
-
- 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
- B21B45/0269—Cleaning
- B21B45/0275—Cleaning devices
- B21B45/0278—Cleaning devices removing liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Radiation Pyrometers (AREA)
Abstract
The present invention relates to belt steel surface purging fields more particularly to a kind of hot rolling low temperature coiling band steel surface to purge control method.A kind of hot rolling low temperature coiling band steel surface purging control method based on water area, the nozzle of surface cleaning device is divided into several groups, the supply air line of nozzle described in each group is controlled by purging controller and is opened and closed, imaging device is set between cooling facility for laminar flow and surface cleaning device, then water area percentage and purging intensity data library are established, imaging device obtains the surface image of strip；Image analysis apparatus obtains water area percentage by surface image；Controller controls nozzle according to water area percentage.The present invention is according to residual water area control purging intensity, the status for avoiding a large amount of compressed airs of purge from purging in vain, while ensuring that the upper surface of section cooling strip ensures clean-up effect, it can also avoid a large amount of wastes of the energy, the energy consumption of production process is reduced, the target of cost efficiency is realized at the scene of realization.
Description
Technical field
The present invention relates to belt steel surface purging fields more particularly to a kind of hot rolling low temperature coiling band steel surface to purge controlling party
Method.
Background technique
As shown in Figure 1, the process of batching of existing hot rolling low temperature strip is that strip 1 is cold sequentially through finishing rolling mill 2, laminar flow
But device 3, surface cleaning device 4, temperature measuring equipment 5 and devices for taking-up 6, when the meeting after the washing of surface cleaning device 4 of strip 1
Water is remained, these remaining water influence whether the temperature measurement accuracy and thermometric success rate of temperature measuring equipment 5, and temperature is to influence strip
The important indicator of final mass is organized, therefore is provided with surface cleaning device 4 and strip 1 is purged, surface cleaning device 4
Nozzle sprays the residual water on 1 surface of compressed air purging strip, guarantees the reliability of 5 thermometric of temperature measuring equipment；
When existing surface cleaning device is applied to hot-rolling laminar region, it is contemplated that safe factor, and avoid hitting and give up
Steel, there are certain distances for meeting between its usual nozzle and strip, and in the purge zone of the hot rolling low temperature strip, belt steel temperature is usual
At 500 DEG C hereinafter, the purge stream that sprays of nozzle with range attenuation quickly, in order to reach certain purging effect need it is biggish
Throughput, so that purging energy consumption greatly increases, it is therefore desirable to which one kind can accurately control the method for purging amount to reduce energy consumption, completely
The energy-efficient demand of foot.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of, and the hot rolling low temperature coiling band steel surface based on water area is blown
Control method is swept, which avoids a large amount of compressed airs of purge invalid according to residual water area control purging intensity
The status of purging, while ensuring that the upper surface of section cooling strip ensures clean-up effect, additionally it is possible to avoid a large amount of of the energy
Waste reduces the energy consumption of production process, and the target of cost efficiency is realized at the scene of realization.
The present invention is implemented as follows: a kind of hot rolling low temperature coiling band steel surface based on water area purges control method,
The nozzle of surface cleaning device is divided into several groups, the supply air line of nozzle described in each group is controlled by purging controller to be opened and closed,
Imaging device is set between cooling facility for laminar flow and surface cleaning device, then follows the steps below control:
S1. water area percentage and purging intensity data library are established, belt steel surface is obtained in each water area percentage by test
Than when required purging intensity after storage into database；
Water area percentage=(belt steel surface remains water area/belt steel surface gross area) × 100%
Purge intensity=(nozzle sets quantity/nozzle sets total quantity of unlatching) × 100%；
S2. image analysis apparatus is sent to after the surface image of the imaging device acquisition strip；
S3. described image analytical equipment handles surface image to be sent to purging controller after obtaining water area percentage；
S4. purging controller according to water area percentage after finding to obtain corresponding purging intensity in database to surface cleaning
The purging intensity of device is controlled.
In the step S2, the surface image of a strip is obtained every 10 ~ 60s imaging device.
The imaging device is video camera.
In the step S3, image analysis apparatus handles surface image to obtain the specific steps of water area percentage
For, gray threshold is set,
1) surface image is converted to gray scale single channel image from the color image of RGB triple channel by image analysis apparatus；
2) smooth to gray scale single channel image using filtering algorithm, denoising；
3) for the pixel using gray scale greater than gray threshold as water remanent point, the gross area of all water remanent points is belt steel surface residual
The gross area of water area, the surface image is the belt steel surface gross area, and water area percentage is calculated.
The imaging device is thermal imaging system.
In the step S3, image analysis apparatus to surface image handled to obtain water area percentage the specific steps are,
Gray threshold is set,
1) surface image is converted to gray scale single channel image from the color image of RGB triple channel by image analysis apparatus；
2) smooth to gray scale single channel image using filtering algorithm, denoising；
3) for the pixel using gray scale less than gray threshold as water remanent point, the gross area of all water remanent points is belt steel surface residual
The gross area of water area, the surface image is the belt steel surface gross area, and water area percentage is calculated.
The present invention is based on the hot rolling low temperature coiling band steel surface of water area purging control methods according to residual water area control
Intensity is purged, the status for avoiding a large amount of compressed airs of purge from purging in vain is true in the upper surface for ensuring section cooling strip
While protecting clean-up effect, additionally it is possible to which a large amount of wastes for avoiding the energy reduce the energy consumption of production process, and the scene of realization is realized
The target of cost efficiency realizes being precisely controlled when hot rolling low temperature coiling band steel surface cleaning device purges work online and oneself
Dynamic control, reduces equipment use cost, provides equipment guarantee to improve belt steel surface temperature measurement accuracy.
Detailed description of the invention
Fig. 1 batches flow diagram for existing hot rolling low temperature strip；
Fig. 2 is to batch process the present invention is based on the hot rolling low temperature coiling band steel surface of water area purging control method corollary apparatus
Schematic diagram；
Fig. 3 is control flow block diagram of the invention.
In figure: 1 strip, 2 finishing rolling mills, 3 cooling facility for laminar flow, 4 surface cleaning devices, 5 temperature measuring equipments, 6 devices for taking-ups,
7 purging controllers, 8 imaging devices.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after having read the content of the invention stated, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
As shown in Figure 2,3, a kind of hot rolling low temperature coiling band steel surface based on water area purges control method, and surface cleaning is filled
The nozzle for setting 4 is divided into several groups, and the supply air line of nozzle described in each group is controlled by purging controller 7 to be opened and closed, in section cooling
Imaging device 8 is set between device 3 and surface cleaning device 4, then follows the steps below control:
S1. water area percentage and purging intensity data library are established, belt steel surface is obtained in each water area percentage by test
Than when required purging intensity after storage into database；
Water area percentage=(belt steel surface remains water area/belt steel surface gross area) × 100%
Purge intensity=(nozzle sets quantity/nozzle sets total quantity of unlatching) × 100%；
S2. image analysis apparatus is sent to after the surface image of the imaging device acquisition strip；In the present invention, because it is practical
Do not compare in use environment and purging amount is frequently adjusted, also for the service life for improving equipment, the imaging dress
It sets and obtains the surface image of a strip every 10 ~ 60s, can meet the needs of control；
S3. described image analytical equipment handles surface image to be sent to purging controller after obtaining water area percentage；
S4. purging controller according to water area percentage after finding to obtain corresponding purging intensity in database to surface cleaning
The purging intensity of device is controlled.
In the present invention, the equipment difference according to selected by imaging device is to surface image using the processing side to match
Method, when the imaging device is video camera, in the surface image of strip 1, anhydrous domains are imaged as the lower red of brightness, and
There is the region of water to will appear the higher reflective surface of a brightness；At this point, specific processing obtain water area percentage the specific steps are,
Gray threshold is set,
1) surface image is converted to gray scale single channel image from the color image of RGB triple channel by image analysis apparatus；
2) due to site environment complexity, image can generate much noise in collection and transmission, in order to guarantee characteristics of image
The height at edge is comparative, smooth to gray scale single channel image using filtering algorithm, denoising；
3) for the pixel using gray scale greater than gray threshold as water remanent point, the gross area of all water remanent points is belt steel surface residual
The gross area of water area, the surface image is the belt steel surface gross area, and water area percentage is calculated.
When the imaging device is thermal imaging system, imager to strip 1 surface image in, anhydrous domains are
The higher light-emitting surface of brightness, and have water area because with peripheral temperature contrast difference it is larger, on thermal imaging system can not correctly at
Picture is shown as black region, specific processing obtain water area percentage the specific steps are, set gray threshold,
1) surface image is converted to gray scale single channel image from the color image of RGB triple channel by image analysis apparatus；
2) due to site environment complexity, image can generate much noise in collection and transmission, in order to guarantee characteristics of image
The height at edge is comparative, smooth to gray scale single channel image using filtering algorithm, denoising；
3) for the pixel using gray scale less than gray threshold as water remanent point, the gross area of all water remanent points is belt steel surface residual
The gross area of water area, the surface image is the belt steel surface gross area, and water area percentage is calculated.
By taking the control of the purging of certain rack as an example, surface cleaning device 4, temperature measuring equipment 5 and imaging device 8 deploy with
Afterwards, the nozzle of surface cleaning device 4 is divided into five rows first, nozzle described in five rows along the direction of advance of strip 1 it is sequentially equal between
Away from arrangement；Then field test is carried out, water area percentage is related with the temperature of strip 1, and the temperature of usual strip 1 is at 200 DEG C
When left and right, the water area percentage that image analysis apparatus obtains is 90% ~ 100%, needs five row's nozzle standard-sized sheets at this time, i.e. purging is strong
Spending 100% just can guarantee that temperature measuring equipment 5 can smoothly obtain the continuous temperature data of strip 1；The water that image analysis apparatus obtains
Area percentage needs to open four row's nozzles when being 70% ~ 90% just can guarantee that temperature measuring equipment 5 can smoothly obtain strip 1 continuously
Temperature data；The water area percentage that image analysis apparatus obtains, which needs to open three row's nozzles when being 50% ~ 70%, just can guarantee
Temperature measuring equipment 5 can smoothly obtain the continuous temperature data of strip 1；The water area percentage that image analysis apparatus obtains is
Needing to open two rows of nozzles when 20% ~ 50% just can guarantee that temperature measuring equipment 5 can smoothly obtain the continuous temperature data of strip 1；
The water area percentage that image analysis apparatus obtains, which needs to open row's nozzle when being 1% ~ 20%, just can guarantee that temperature measuring equipment 5 can
Smoothly obtain the continuous temperature data of strip 1；When water area percentage is less than 1% on temperature measuring equipment 5 substantially without influence, no
Need to be then turned on surface cleaning device 4；After the above test data is stored in database, field condition when according to production is carried out
Selection, can substantially reduce the energy consumption of surface cleaning device 4 and the consumption of compressed air.
Claims (6)
1. a kind of hot rolling low temperature coiling band steel surface based on water area purges control method, it is characterized in that: surface cleaning is filled
The nozzle set is divided into several groups, and the supply air line of nozzle described in each group is controlled by purging controller to be opened and closed, and fills in section cooling
It sets and imaging device is set between surface cleaning device, then follow the steps below control:
S1. water area percentage and purging intensity data library are established, belt steel surface is obtained in each water area percentage by test
Than when required purging intensity after storage into database；
Water area percentage=(belt steel surface remains water area/belt steel surface gross area) × 100%
Purge intensity=(nozzle sets quantity/nozzle sets total quantity of unlatching) × 100%；
S2. image analysis apparatus is sent to after the surface image of the imaging device acquisition strip；
S3. described image analytical equipment handles surface image to be sent to purging controller after obtaining water area percentage；
S4. purging controller according to water area percentage after finding to obtain corresponding purging intensity in database to surface cleaning
The purging intensity of device is controlled.
2. the hot rolling low temperature coiling band steel surface based on water area purges control method as described in claim 1, it is characterized in that:
In the step S2, the surface image of a strip is obtained every 10 ~ 60s imaging device.
3. the hot rolling low temperature coiling band steel surface based on water area purges control method, feature as claimed in claim 1 or 2
Be: the imaging device is video camera.
4. the hot rolling low temperature coiling band steel surface based on water area purges control method as claimed in claim 3, it is characterized in that:
In the step S3, image analysis apparatus to surface image handled to obtain water area percentage the specific steps are settings
Gray threshold,
1) surface image is converted to gray scale single channel image from the color image of RGB triple channel by image analysis apparatus；
2) smooth to gray scale single channel image using filtering algorithm, denoising；
3) for the pixel using gray scale greater than gray threshold as water remanent point, the gross area of all water remanent points is belt steel surface residual
The gross area of water area, the surface image is the belt steel surface gross area, and water area percentage is calculated.
5. the hot rolling low temperature coiling band steel surface based on water area purges control method, feature as claimed in claim 1 or 2
Be: the imaging device is thermal imaging system.
6. the hot rolling low temperature coiling band steel surface based on water area purges control method as claimed in claim 5, it is characterized in that:
In the step S3, image analysis apparatus to surface image handled to obtain water area percentage the specific steps are settings
Gray threshold,
1) surface image is converted to gray scale single channel image from the color image of RGB triple channel by image analysis apparatus；
2) smooth to gray scale single channel image using filtering algorithm, denoising；
3) for the pixel using gray scale less than gray threshold as water remanent point, the gross area of all water remanent points is belt steel surface residual
The gross area of water area, the surface image is the belt steel surface gross area, and water area percentage is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710524374.7A CN109201750B (en) | 2017-06-30 | 2017-06-30 | Hot-rolled low-temperature coiled strip steel surface purging control method based on water area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710524374.7A CN109201750B (en) | 2017-06-30 | 2017-06-30 | Hot-rolled low-temperature coiled strip steel surface purging control method based on water area |
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| CN109201750A true CN109201750A (en) | 2019-01-15 |
| CN109201750B CN109201750B (en) | 2020-12-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112934985A (en) * | 2021-02-01 | 2021-06-11 | 武汉钢铁有限公司 | Method and device for purifying surface of strip steel |
| CN115213233A (en) * | 2022-04-22 | 2022-10-21 | 广西广盛新材料科技有限公司 | Method, controller and system for spraying and sweeping strip steel |
| CN118237409A (en) * | 2024-05-28 | 2024-06-25 | 杭州泰恩智达装备科技有限公司 | Scale removal speed regulation method, electronic equipment, computer readable medium and speed regulation system |
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| JPH11244930A (en) * | 1998-03-03 | 1999-09-14 | Nisshin Steel Co Ltd | Deposition removing device and its method |
| CN202006222U (en) * | 2011-01-12 | 2011-10-12 | 宝山钢铁股份有限公司 | Online control device for linear secondary pressing-in of oxide scales |
| KR20140042076A (en) * | 2012-09-27 | 2014-04-07 | 현대제철 주식회사 | Apparatus and method for controlling descaler |
| CN205362240U (en) * | 2015-12-24 | 2016-07-06 | 马鞍山钢铁股份有限公司 | Off -line cold rolled steel strip sweeps device |
| CN106216393A (en) * | 2016-07-26 | 2016-12-14 | 宝钢股份黄石涂镀板有限公司 | A kind of reversible mill with remaining liquid rapid purging device |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11244930A (en) * | 1998-03-03 | 1999-09-14 | Nisshin Steel Co Ltd | Deposition removing device and its method |
| CN202006222U (en) * | 2011-01-12 | 2011-10-12 | 宝山钢铁股份有限公司 | Online control device for linear secondary pressing-in of oxide scales |
| KR20140042076A (en) * | 2012-09-27 | 2014-04-07 | 현대제철 주식회사 | Apparatus and method for controlling descaler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112934985A (en) * | 2021-02-01 | 2021-06-11 | 武汉钢铁有限公司 | Method and device for purifying surface of strip steel |
| CN112934985B (en) * | 2021-02-01 | 2022-08-30 | 武汉钢铁有限公司 | Method and device for purifying surface of strip steel |
| CN115213233A (en) * | 2022-04-22 | 2022-10-21 | 广西广盛新材料科技有限公司 | Method, controller and system for spraying and sweeping strip steel |
| CN118237409A (en) * | 2024-05-28 | 2024-06-25 | 杭州泰恩智达装备科技有限公司 | Scale removal speed regulation method, electronic equipment, computer readable medium and speed regulation system |
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| CN109201750B (en) | 2020-12-22 |
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