CN106755933B - A kind of entry loop mechanism, system and continuous annealing line loop control method - Google Patents
A kind of entry loop mechanism, system and continuous annealing line loop control method Download PDFInfo
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- CN106755933B CN106755933B CN201611047900.7A CN201611047900A CN106755933B CN 106755933 B CN106755933 B CN 106755933B CN 201611047900 A CN201611047900 A CN 201611047900A CN 106755933 B CN106755933 B CN 106755933B
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- strip tension
- band
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- strip
- loop
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/564—Tension control
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention discloses a kind of entry loop mechanism, system and continuous annealing line loop control methods, are applied to technical field of steel rolling.Entry loop mechanism includes: loop bottom roller, bearing, bearing block, pneumatic actuator, band-type brake roller, pedestal, connecting rod；The roller lateral location of the loop bottom roller is arranged in bearing block, band-type brake roller is assemblied in bearing block by bearing, bearing block is fixed on the first end of the connecting rod, the second end of connecting rod is hinged on pedestal, the fixed part of pneumatic actuator is connected on pedestal, and the movement portion of pneumatic actuator is hinged on the first end of connecting rod.It solves in entry loop in the prior art and takes the lead the technical problem that can be pumped into annealing furnace after strip fracture, fault handling time is greatly reduced.
Description
Technical field
The present invention relates to technical field of steel rolling more particularly to a kind of entry loop mechanisms, system and continuous annealing line tower-loop control
Method.
Background technique
Continuous annealing unit is the important link of cold rolled strip steel production, it has, and process is short, yield is high, good product quality etc.
Series of advantages is indispensable annealing device.The entrance velocity of high speed continuous annealing line is fast, when producing thin gauge strip, clearly
It washes section and entry loop and disconnected tape jam often occurs.For example, 1420 continuous annealing lines, entry design maximum speed 1000m/min,
Furnace area maximum speed 750m/min exports maximum speed 1100m/min.Cleaning section and entry loop often occur disconnected when production
Tape jam.
It is existing by be arranged band-type brake block when producing line parking after band-type brake investment, to prevent strip from falling, slide and hurt sb.'s feelings.
But due to losing after disconnected band, strip is out of hand, takes the lead to be pumped into annealing furnace after strip fracture in entry loop, cause by
Urgent blow-on handles disconnected band, since blow-on needs to cool down, purging, needs to purge again, heat up again after having handled strip, directly resulting in
Fault time extends at double, seriously affects the production efficiency of continuous annealing producing line.
Summary of the invention
The embodiment of the present invention is solved by providing a kind of entry loop mechanism, system and continuous annealing line loop control method
The technical problem that can be pumped into annealing furnace is taken the lead after strip fracture in entry loop in the prior art.
In a first aspect, the embodiment of the invention provides a kind of entry loop mechanisms, comprising: loop bottom roller, bearing, bearing
Seat, pneumatic actuator, band-type brake roller, pedestal, connecting rod；The roller lateral location of the loop bottom roller, institute is arranged in the bearing block
It states band-type brake roller to be assemblied in the bearing block by the bearing, the bearing block is fixed on the first end of the connecting rod, described
Hingedly on the base, the fixed part of the pneumatic actuator connects on the base the second end of connecting rod, the gas
The movement portion of dynamic executing agency is hinged on the first end of the connecting rod.
Preferably, distance is less than or equal to 60mm between the roll surface and the pedestal of the band-type brake roller.
Preferably, the band-type brake roller includes solid steel rider, is covered with encapsulated face in the outer wall of the solid steel rider.
Preferably, the diameter of the band-type brake roller is 45~55mm.
Preferably, pressure regulator valve is provided on the air inlet pipeline of the pneumatic actuator.
Second aspect, the embodiment of the invention provides a kind of entry loop systems, comprising: cylinder control module, first party
Any entry loop mechanism in face, the first strip tension measuring device that entry loop region is arranged in, setting are being cleaned
Second strip tension measuring device of section；Wherein, the output end of the first strip tension measuring device, second strip
The output end of force measuring device respectively with the input terminal of the cylinder control module be electrically connected, the cylinder control module it is defeated
The pneumatic actuator of outlet and each entry loop mechanism is electrically connected.
Preferably, the cylinder control module include: a controller and for each entry loop mechanism setting solenoid valve,
The controller and each solenoid valve are electrically connected.
The third aspect, the embodiment of the invention provides a kind of continuous annealing line loop control methods, are applied to described in second aspect
Entry loop system, the continuous annealing line loop control method includes the following steps:
Obtain first strip tension in the entry loop region detected by the first strip tension measuring device
Value, and the second strip tension value of the cleaning section by the second strip tension measuring device detection；
Judge whether the first strip tension value is greater than less than the duration of the first default strip tension lower limit value
One time threshold, and judge the second strip tension value less than the second default strip tension lower limit value duration whether
Greater than second time threshold；
It is greater than in the duration that the first strip tension value is less than the described first default strip tension lower limit value described
First time threshold and/or the second strip tension value are less than the duration of the described second default strip tension lower limit value
When greater than the second time threshold, controlled described at least one described entry loop mechanism by the cylinder control module
Band-type brake roller presses to strip under the drive of the pneumatic actuator.
Preferably, the described first default strip tension lower limit value is 1KN, and the second default strip tension lower limit value is
1KN。
Preferably, the first time threshold is 0.5S, and the second time threshold is 0.5S.
The one or more technical solutions provided in the embodiment of the present invention, have at least the following technical effects or advantages:
The roller lateral location of loop bottom roller is set by bearing block, and band-type brake roller is assemblied in the bearing block by bearing
Interior, bearing block is fixed on the first end of connecting rod, and the second end of connecting rod is hinged on pedestal, the fixed part connection of pneumatic actuator
On pedestal, the movement portion of pneumatic actuator is hinged on the first end of connecting rod.Occur to break as can be seen that can run in producing line
Band or when being judged to disconnected band (strip tension is less than default strip tension lower limit value), pneumatic actuator drives under band-type brake roll-in, from
And strip is pressed to provide Minimal Tension to strip, it avoids taking the lead to be pumped into furnace, to solve in entry loop in the prior art
The technical problem that can be pumped into annealing furnace is taken the lead after strip fracture, since taking the lead to be drawn into furnace when disconnected band, is also just not required to
It wants blow-on to handle disconnected band, therefore fault handling time is greatly reduced.Also limitation strip is on the roll surface of loop bottom roller simultaneously
Left and right play, and then effectively avoid the secondary disconnected band as caused by strip scratch steel construction.
Further, by obtaining the first strip tension value in detection entry loop region and the second strip of cleaning section
Tension value；First strip tension value is pre- less than second less than the first default strip tension lower limit value and/or the second strip tension value
If when strip tension lower limit value, pneumatically being executed by the band-type brake roller that cylinder control module controls at least one entry loop mechanism
Strip is pressed under the drive of mechanism.As can be seen that can judge through the above scheme cleaning section, entry loop region whether band
Steel, which loses, to be opened, and is opened to be lost with the strip in cleaning section and/or entry loop region for trigger condition to trigger the throwing of entry loop mechanism
Enter, to realize that band-type brake roller provides Minimal Tension to strip in advance, without just coming into operation after waiting thoroughly parking, it is ensured that taking the lead not
It can be drawn back into furnace.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of entry loop mechanism in the embodiment of the present invention；
Fig. 2 is the installation main view of band-type brake roller in Fig. 1；
Fig. 3 is the installation side view of band-type brake roller in Fig. 1；
Fig. 4 is the structural schematic diagram of entry loop system in the embodiment of the present invention；
Fig. 5 is the flow chart of continuous annealing line loop control method in the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
With reference to shown in FIG. 1 to FIG. 4, a kind of entry loop mechanism 10 provided by the invention.
Entry loop mechanism 10 includes: loop bottom roller 1, bearing 2, bearing block 3, pneumatic actuator 4, band-type brake roller 5, pedestal
6, connecting rod 7.The roller lateral location of loop bottom roller 1 is arranged in bearing block 3, and band-type brake roller 5 is assemblied in bearing block 3 by bearing 2, axis
The first end that seat 3 is fixed on connecting rod 7 is held, the second end of connecting rod 7 is hinged on pedestal 6, the fixed part connection of pneumatic actuator 4
On pedestal 6, the movement portion of pneumatic actuator 4 is hinged on the first end of connecting rod 7.
Pass through above-mentioned entry loop mechanism 10, when producing line operation occurs disconnected band or is judged to disconnected band, pneumatic actuator 4
The movement of movement portion drives connecting rod 7, so that bearing block 3 fixed in the first end of connecting rod 7 pushes, makes the band-type brake roller 5 on bearing block 3
Minimal Tension is provided to strip, effectively avoids taking the lead to be drawn into furnace, while a left side of the strip on 1 roll surface of loop bottom roller can be limited
Right play, to avoid the secondary disconnected band as caused by strip scratch steel construction.
In one embodiment, after band-type brake roller 5 is installed, distance is less than or equal between the roll surface and pedestal 6 of band-type brake roller 5
60mm.Corresponding, the diameter of band-type brake roller 5 is 45~55mm.It avoids band-type brake roller 5 too big and influences band-type brake roller 5 and run hair in producing line
Pressure when giving birth to disconnected band or being judged to disconnected band.
In one embodiment, bearing 2 uses roller needle bearing, and roller needle bearing is mounted in bearing block 3 with external.
In one embodiment, band-type brake roller 5 includes solid steel rider, is covered with encapsulated face in the outer wall of solid steel rider.
In one embodiment, it is provided with pressure regulator valve on the air inlet pipeline of pneumatic actuator 4, realizes that band-type brake roller 5 is thrown
Fashionable pressure adjustable, effectively avoids hypertonia from breaking strip.
By taking 1420 continuous annealing lines as an example, the setting of entry loop area successively has multiple loop bottom rollers 1, and each loop bottom roller 1 is corresponding
It is provided with bearing 2, bearing block 3, pneumatic actuator 4, band-type brake roller 5 and pedestal 6.Connecting rod 7.Bearing block 3 is arranged in loop bottom roller 1
Roller lateral location, band-type brake roller 5 is assemblied in bearing block 3 by bearing 2, and bearing block 3 is fixed on the first end of connecting rod 7, connecting rod 7
Second end be hinged on pedestal 6, the fixed part of pneumatic actuator 4 is connected on pedestal 6, the movement of pneumatic actuator 4
Portion is hinged on the first end of connecting rod 7, so as to form multiple entry loop mechanisms 10 in entry loop area.
Based on the same inventive concept, the embodiment of the invention provides a kind of entry loop systems, refering to what is shown in Fig. 4, including:
Cylinder control module, the entry loop mechanism 10 of multiple previous embodiments offer, the first strip that entry loop region is set
Tension measuring device 11, the second strip tension measuring device 12 that cleaning section is set, wherein the first strip tension measuring device
11 output end, the second strip tension measuring device 12 output end respectively with the input terminal of cylinder control module be electrically connected,
The output end of cylinder control module and the pneumatic actuator 4 of each entry loop mechanism 10 are electrically connected.Specifically, first band
Steel tension measuring device 11 can be one or more tensometers, and the second strip tension measuring device 12 can be a tensometer
Or multiple tensometers.
In one embodiment, cylinder control module includes: a controller 8 and multiple solenoid valves 9, wherein each entrance is living
Set mechanism 10 is correspondingly arranged a solenoid valve 9, and each solenoid valve 9 is electrically connected with controller 8, to control electricity by controller 8
Magnet valve 9, so that the flow of air inlet pipeline is controlled by solenoid valve 9, so that the movement portion of corresponding pneumatic actuator 4 be made to move
Connecting rod 7 is driven, bearing block 3 fixed in the first end of connecting rod 7 is pushed, and then keeps the band-type brake roller 5 on bearing block 3 micro- to strip
Tension, in the specific implementation process, solenoid valve 9 can also be substituted by the component of other existing control pneumatic actuators 4.
Based on the same inventive concept, the embodiment of the invention provides a kind of continuous annealing line loop control methods, are applied to aforementioned
Entry loop system described in embodiment.Refering to what is shown in Fig. 5, continuous annealing line loop control method provided in an embodiment of the present invention includes
Following steps:
S101, the first strip tension for obtaining the entry loop region detected by the first strip tension measuring device 11
Value, and the second strip tension value of the cleaning section by the detection of the second strip tension measuring device 12.
S102, judge whether the first strip tension value is greater than less than the duration of the first default strip tension lower limit value
One time threshold, and judge whether the second strip tension value is greater than less than the duration of the second default strip tension lower limit value
Second time threshold.
S103, it is greater than first in the duration that the first strip tension value is less than the described first default strip tension lower limit value
Time threshold and/or the second strip tension value were greater than for the second time less than the duration of the second default strip tension lower limit value
When threshold value, band of the band-type brake roller 5 in pneumatic actuator 4 of at least one entry loop mechanism 10 is controlled by cylinder control module
Strip is pressed under dynamic.
Specifically, the first default strip tension lower limit value and the second default strip tension lower limit value are set according to actual needs
It sets, first time threshold and second time threshold are arranged according to actual needs, to just sentence when strip loses and opens to a certain extent
Break as the band that breaks, without until producing line is stopped band-type brake roller 5 just put into.For example, the first default strip tension lower limit value
It is identical as the second default strip tension lower limit value, it is disposed as 1KN.First time threshold is identical as second time threshold, is all provided with
It is set to 0.5 second.Certainly, in the specific implementation process, the first, second default strip tension lower limit value, the first, second time threshold
It is not limited to the example above.In one embodiment, the first default strip tension lower limit value is set as 1KN, first time threshold
Value is set as 0.5S, then when the strip tension value for judging entry loop region continues 0.5S lower than 1KN, then passes through cylinder control
The band-type brake roller 5 that molding block controls at least one entry loop mechanism 10 presses to strip under the drive of pneumatic actuator 4.One
In specific embodiment, the second default strip tension lower limit value is set as 1KN, and first time threshold is set as 0.5S, then is judging
When the strip tension value of cleaning section continues 0.5S lower than 1KN out, then at least one entry loop is controlled by cylinder control module
The band-type brake roller 5 of mechanism 10 presses to strip under the drive of pneumatic actuator 4.
The one or more embodiments provided by the embodiments of the present invention, at least realize following technical effect or excellent
Point:
The roller lateral location of loop bottom roller is set by bearing block, and band-type brake roller is assemblied in the bearing block by bearing
Interior, bearing block is fixed on the first end of connecting rod, and the second end of connecting rod is hinged on pedestal, the fixed part connection of pneumatic actuator
On pedestal, the movement portion of pneumatic actuator is hinged on the first end of connecting rod.Occur to break as can be seen that can run in producing line
Band or when being judged to disconnected band (strip tension is less than default strip tension lower limit value), pneumatic actuator drives under band-type brake roll-in, from
And strip is pressed to provide Minimal Tension to strip, it avoids taking the lead to be pumped into furnace, to solve in entry loop in the prior art
The technical problem that can be pumped into annealing furnace is taken the lead after strip fracture, since taking the lead to be drawn into furnace when disconnected band, is also just not required to
It wants blow-on to handle disconnected band, therefore fault handling time is greatly reduced.Also limitation strip is on the roll surface of loop bottom roller simultaneously
Left and right play, and then effectively avoid the secondary disconnected band as caused by strip scratch steel construction.
Further, by obtaining the first strip tension value in detection entry loop region and the second strip of cleaning section
Tension value；First strip tension value is pre- less than second less than the first default strip tension lower limit value and/or the second strip tension value
If when strip tension lower limit value, pneumatically being executed by the band-type brake roller that cylinder control module controls at least one entry loop mechanism
Strip is pressed under the drive of mechanism.As can be seen that can judge through the above scheme cleaning section, entry loop region whether band
Steel, which loses, to be opened, and is opened to be lost with the strip in cleaning section and/or entry loop region for trigger condition to trigger the throwing of entry loop mechanism
Enter, to realize that band-type brake roller provides Minimal Tension to strip in advance, without just coming into operation after waiting thoroughly parking, it is ensured that taking the lead not
It can be drawn back into furnace.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of entry loop mechanism characterized by comprising loop bottom roller, bearing, bearing block, pneumatic actuator, band-type brake
Roller, pedestal, connecting rod；
The roller lateral location of the loop bottom roller is arranged in the bearing block, and the band-type brake roller is assemblied in described by the bearing
In bearing block, the bearing block is fixed on the first end of the connecting rod, the second end of the connecting rod hingedly on the base, institute
The fixed part for stating pneumatic actuator connects on the base, and the movement portion of the pneumatic actuator is hinged on the connecting rod
The first end.
2. entry loop mechanism as described in claim 1, which is characterized in that between the roll surface and the pedestal of the band-type brake roller
Distance is less than or equal to 60mm.
3. entry loop mechanism as described in claim 1, which is characterized in that the band-type brake roller includes solid steel rider, described
The outer wall of solid steel rider is covered with encapsulated face.
4. entry loop mechanism as described in claim 1, which is characterized in that the diameter of the band-type brake roller is 45~55mm.
5. entry loop mechanism as described in claim 1, which is characterized in that set on the air inlet pipeline of the pneumatic actuator
It is equipped with pressure regulator valve.
6. a kind of entry loop system characterized by comprising cylinder control module, it is multiple such as any power in claim 1-5
Benefit requires the entry loop mechanism, and the first strip tension measuring device in entry loop region is arranged in, and setting is being cleaned
Second strip tension measuring device of section；
Wherein, the output end of the first strip tension measuring device, the second strip tension measuring device output end point
It is not electrically connected with the input terminal of the cylinder control module, the output end of the cylinder control module and each entrance are living
Cover the pneumatic actuator electrical connection of mechanism.
7. entry loop system as claimed in claim 6, which is characterized in that the cylinder control module includes: a controller
With the solenoid valve being arranged for each entry loop mechanism, the controller and each solenoid valve are electrically connected.
8. a kind of continuous annealing line loop control method is applied to entry loop system as claimed in claim 6, which is characterized in that
The continuous annealing line loop control method includes the following steps:
The first strip tension value in the entry loop region detected by the first strip tension measuring device is obtained, with
And the second strip tension value of the cleaning section detected by the second strip tension measuring device；
When judging whether the first strip tension value is greater than first less than the duration of the first default strip tension lower limit value
Between threshold value, and judge whether the second strip tension value is greater than less than the duration of the second default strip tension lower limit value
Second time threshold；
It is greater than described first in the duration that the first strip tension value is less than the described first default strip tension lower limit value
The duration that time threshold and/or the second strip tension value are less than the described second default strip tension lower limit value is greater than
When the second time threshold, the band-type brake of at least one entry loop mechanism is controlled by the cylinder control module
Roller presses to strip under the drive of the pneumatic actuator.
9. continuous annealing line loop control method as claimed in claim 8, which is characterized in that the first default strip tension lower limit
Value is 1KN, and the second default strip tension lower limit value is 1KN.
10. continuous annealing line loop control method as claimed in claim 8, which is characterized in that the first time threshold is 0.5S,
The second time threshold is 0.5S.
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| CN201611047900.7A CN106755933B (en) | 2016-11-21 | 2016-11-21 | A kind of entry loop mechanism, system and continuous annealing line loop control method |
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| CN201611047900.7A CN106755933B (en) | 2016-11-21 | 2016-11-21 | A kind of entry loop mechanism, system and continuous annealing line loop control method |
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| CN108754116B (en) * | 2018-04-28 | 2020-02-21 | 首钢京唐钢铁联合有限责任公司 | Method and device for preventing strip steel from being sucked into furnace after strip breakage of continuous annealing unit |
| CN108914031A (en) * | 2018-06-29 | 2018-11-30 | 首钢京唐钢铁联合有限责任公司 | A kind of control method of zinc-plated producing line entry loop sideslip |
| CN111346925B (en) * | 2020-03-03 | 2022-05-10 | 首钢京唐钢铁联合有限责任公司 | Method and system for preventing strip breakage and vehicle sliding of acid continuous rolling mill |
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| CN100471961C (en) * | 2004-03-29 | 2009-03-25 | 宝山钢铁股份有限公司 | Method for preventing band-break during continuous annealing process of band steel and its control system |
| CN101850368B (en) * | 2009-03-31 | 2014-01-01 | 上海宝钢工业技术服务有限公司 | Strip break on-line detection method of acid pickling-rolling mill integral unit |
| CN101852599A (en) * | 2009-03-31 | 2010-10-06 | 上海宝钢工业检测公司 | Loop strip break on-line detection method of acid pickling-rolling mill integral unit |
| CN102101128B (en) * | 2011-01-31 | 2013-06-19 | 中冶赛迪工程技术股份有限公司 | Two-way controllable looping system |
| CN202539186U (en) * | 2012-04-17 | 2012-11-21 | 浙江富春江环保热电股份有限公司 | Tension detection and tension loss protection device for rolling mill |
| CN203846085U (en) * | 2014-05-27 | 2014-09-24 | 攀钢集团攀枝花钢钒有限公司 | Continuous annealing unit belt breakage control system |
| CN204022908U (en) * | 2014-08-25 | 2014-12-17 | 攀钢集团攀枝花钢钒有限公司 | Band steel even moves back the anti-breaking control device of unit |
| CN105016150A (en) * | 2015-06-29 | 2015-11-04 | 宝钢股份黄石涂镀板有限公司 | Sliding type strip steel tension buffer control device |
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