CN106566917A - Vehicle re-starting control method for IF steel product of continuous annealing unit - Google Patents
Vehicle re-starting control method for IF steel product of continuous annealing unit Download PDFInfo
- Publication number
- CN106566917A CN106566917A CN201611005555.0A CN201611005555A CN106566917A CN 106566917 A CN106566917 A CN 106566917A CN 201611005555 A CN201611005555 A CN 201611005555A CN 106566917 A CN106566917 A CN 106566917A
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- car
- furnace temperature
- steel
- control method
- open
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Classifications
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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
-
- 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
- C21D11/00—Process control or regulation for heat treatments
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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 belongs to the technical field of continuous annealing of cold rolling, and discloses a vehicle re-starting control method for an IF steel product of a continuous annealing unit. The method comprises the steps of acquiring the thickness and width of strip steep; and selecting the vehicle re-starting furnace temperature according to the thickness and width of the strip steel. The invention provides the control method for overcoming the buckling defect during the vehicle re-starting process.
Description
Technical field
The present invention relates to cold rolled continuous annealing technical field, more particularly to a kind of continuous annealing unit IF product made from steel opens again car control
Method.
Background technology
With moving forward steadily for continuous annealing Automobile Plate, the production normalization increasingly of IF steel.Straight carbon steel kind on year-on-year basis, IF steel stops
It is bent bigger with the risk of broken belt in stove that generation wooden dipper during car is opened again.
Especially in disastershutdown temperature-fall period, the strip for wrapping up furnace roller is acted on by roll crown and temperature inequality thermal stress
Regional area produces plastic deformation, the Qi Cheshi under higher furnace temperature, and plastic deformation region can develop into wooden dipper song.For wide cut
Strip, in the presence of the heat radiation of furnace wall, steel edge portion can occur burning and produce side wave defect, asymmetric during car is opened again
Side wave can cause serious sideslip in strip steel furnace, when opening car at a higher temperature, sideslip causes the uneven induction tension force wooden dipper of tension force
It is bent.
The content of the invention
Present invention offer one kind is moved back unit IF product made from steel and opens car control method again, solves the car process that open again in prior art
The technical problem of temperature causes strip to float song and tension force floats song.
To solve above-mentioned technical problem, the invention provides a kind of continuous annealing unit IF product made from steel opens again car control method, bag
Include：
Obtain the thickness and width when steel；
Select to open car furnace temperature again according to the thickness and width of strip；
Wherein, the thickness δ of the strip, width d include with the corresponding relation for opening car furnace temperature again：
Further, when opening car furnace temperature described in and if only if again less than or equal to 650 degrees Celsius, the car furnace temperature that opens again is with equal
Hot arc furnace temperature is used as benchmark；
When it is described open again car furnace temperature more than 650 degrees Celsius when, the car furnace temperature that opens again is on the basis of the 3rd bringing-up section furnace temperature
Furnace temperature.
Further, methods described also includes：Car tension control step is opened again；
The car tension control step that opens again includes：
Open again the car starting stage, 40%～60% that car tension force is two grades of tension force is opened again in holding；
Open again the car stabilization sub stage, holding opens again car tension force for two grades of tension force.
Further, open again the car starting stage described, the strip keeps the low cruise of 30～50m/min.
Further, it is described to open the car starting stage again and continue 2～3 minutes.
Further, the strip opens again the car starting stage by described, and translational speed is stepped up, until 60m/
Min opens again the car stabilization sub stage described in entering.
Further, methods described also includes：Camber control step；
The camber control step includes：
When running deviation value is more than 100mm, stop immediately；
Car tension force will again be opened increases to the 100%～180% of two grades of tension force.
Further, the camber control step also includes：
When running deviation value stops more than 100mm, after furnace temperature is decrease continuously to 400 DEG C, will again open car tension force increases to two grades
Car is opened again in 100%～180% execution of tension force.
One or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
The unit IF product made from steel that moves back that the embodiment of the present application is provided opens again car control method, for opening temperature pair during car again
Float the impact of song, the temperature control strategy of being proposed for property strictly suppresses plastic deformation；It is quick especially for this kind of temperature of IF steel
The high steel grade of perception, can fully reduce the risk of the plastic deformation of strip, so as to substantially reduce the bent defect of floaing for thereby resulting in.
Further, by opening car tension control step again, on the basis of temperature control, then open during car, two
The tension force in stage, further limits the side wave defect of steel band, so as to limit the bent defect of floaing for thereby resulting in, lifts steel band
Quality.
Further, on the basis of car tension force is opened again, by camber control step, adjust from the angle of strip motion
Whole Tension Control Strategy so that strip is at a kind of motion morphology of relative normal table, it is to avoid caused by defective mode
Deformation, so as to further limit bent defect of floaing, lifts strip quality.
Description of the drawings
Fig. 1 opens again car control method flow chart for the unit IF product made from steel that moves back provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present application is moved back unit IF product made from steel and opens car control method again by offer one kind, in solving prior art
Open that car process temperature causes strip to float song and tension force floats the technical problem of song again；Reach and suppressed bent defect of floaing, improving product
The technique effect of quality.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
State technical scheme to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than to the restriction of technical scheme, in the case where not conflicting, the embodiment of the present application
And the technical characteristic in embodiment can be mutually combined.
Referring to Fig. 1, one kind provided in an embodiment of the present invention is moved back unit IF product made from steel and opens car control method again, including：
Obtain the thickness and width when steel；
Select to open car furnace temperature again according to the thickness and width of strip；
Wherein, the thickness δ of the strip, width d include with the corresponding relation for opening car furnace temperature again：
Specifically, retrieval scalar is used as by the thickness and width of strip, the Control for Kiln Temperature amount of car is opened again in acquisition, as above
Described in table.
Further, when opening car furnace temperature described in and if only if again less than or equal to 650 degrees Celsius, the car furnace temperature that opens again is with equal
Hot arc furnace temperature is used as benchmark；When it is described open again car furnace temperature more than 650 degrees Celsius when, the car furnace temperature that opens again is with the 3rd bringing-up section stove
Furnace temperature on the basis of temperature.
Specifically, temperature control point selection is divided into two steps.
When stove area lowers the temperature, due to the difference that each area equipment is constituted, rate of temperature fall is not quite identical.Generally bringing-up section radiation
Pipe is more, and cooling rate is greater than soaking zone.And affected by soaking zone heat transfer, the 3rd bringing-up section cooling rate is generally below
One and second bringing-up section.With opening again, car temperature is lower, and each interregional furnace temperature difference is bigger.Consider wooden dipper style of song danger and
During production efficiency, using soaking zone and the 3rd bringing-up section furnace temperature as opening car Control for Kiln Temperature point again.
Typically, the easy wooden dipper song strip relatively low for car temperature is opened again, in order to reduce opening car wooden dipper style of song danger again, generally selects
Hot arc is used as opening again car furnace temperature benchmark.And the strip higher for car temperature is opened again, due to being not susceptible to open car wooden dipper song again, generally
Consider using the 3rd bringing-up section furnace temperature as control benchmark from production efficiency.When typically opening car furnace temperature higher than 650 DEG C, with soaking zone stove
On the basis of warm (zone11).When opening car furnace temperature less than 650 DEG C (containing 650 DEG C), on the basis of the 3rd bringing-up section furnace temperature.
Also on the basis of temperature control, car Tension Control Strategy is opened again in increase to the present embodiment, coordinates temperature controlling step
Realize the lifting of control effect.
Specifically, the car tension control step that opens again includes：
Open again the car starting stage, 40%～60% that car tension force is two grades of tension force is opened again in holding；
Open again the car stabilization sub stage, holding opens again car tension force for two grades of tension force.
That is, realize opening again during car by two stage Tension Control Strategy, the reasonable distribution control of tension force so that band
Steel progressively adapts to open car process again, ajusts the form of strip, suppresses the deformation risk being likely to occur.
Further, during tension force, open again the car starting stage described, the strip keeps 30～50m/
The low cruise of min.It is described to open the car starting stage again and continue 2～3 minutes.
Pull strip movement, tension of engagement effect that strip is adjusted at a slow speed by low speed, progressively adapt to rolling
Flow process；Stable state is kept, plastic deformation is reduced.
On the other hand, the strip opens again the car starting stage by described, and translational speed is stepped up, until 60m/
Min opens again the car stabilization sub stage described in entering.Normal rolling process is done step-by-step.
Sideslip defect of the present embodiment also very to being likely to occur proposes control strategy.
The camber control step includes：
When running deviation value is more than 100mm, stop immediately；
Car tension force will again be opened increases to the 100%～180% of two grades of tension force.
Specifically, Con trolling index is used as by running deviation value, instructs tension adjustment, car control strip is opened by high-tension tight
Weight sideslip.
Further, the camber control step also includes：
When running deviation value stops more than 100mm, after furnace temperature is decrease continuously to 400 DEG C, will again open car tension force increases to two grades
Car is opened again in 100%～180% execution of tension force.
That is, during sideslip adjustment, furnace temperature is reduced to 400 DEG C, can reduce during sideslip temperature to strip deformation
Affect, so as to the problem for reducing strip deformation during tuningout.
One or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
The unit IF product made from steel that moves back that the embodiment of the present application is provided opens again car control method, for opening temperature pair during car again
Float the impact of song, the temperature control strategy of being proposed for property strictly suppresses plastic deformation；It is quick especially for this kind of temperature of IF steel
The high steel grade of perception, can fully reduce the risk of the plastic deformation of strip, so as to substantially reduce the bent defect of floaing for thereby resulting in.
Further, by opening car tension control step again, on the basis of temperature control, then open during car, two
The tension force in stage, further limits the side wave defect of steel band, so as to limit the bent defect of floaing for thereby resulting in, lifts steel band
Quality.
Further, on the basis of car tension force is opened again, by camber control step, adjust from the angle of strip motion
Whole Tension Control Strategy so that strip is at a kind of motion morphology of relative normal table, it is to avoid caused by defective mode
Deformation, so as to further limit bent defect of floaing, lifts strip quality.
It should be noted last that, above specific embodiment only to illustrate technical scheme and unrestricted,
Although being described in detail to the present invention with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent, without deviating from the spirit and scope of technical solution of the present invention, it all should cover
In the middle of scope of the presently claimed invention.
Claims (8)
1. a kind of continuous annealing unit IF product made from steel opens again car control method, it is characterised in that include：
Obtain the thickness and width when steel；
Select to open car furnace temperature again according to the thickness and width of strip；
Wherein, the thickness δ of the strip, width d include with the corresponding relation for opening car furnace temperature again：
2. continuous annealing unit IF product made from steel as claimed in claim 1 opens again car control method, it is characterised in that：
It is described when opening car furnace temperature again less than or equal to 650 degrees Celsius that and if only if, it is described open again car furnace temperature using soaking zone furnace temperature as
Benchmark；
When it is described open again car furnace temperature more than 650 degrees Celsius when, it is described to open car furnace temperature furnace temperature on the basis of the 3rd bringing-up section furnace temperature again.
3. continuous annealing unit IF product made from steel as claimed in claim 1 opens again car control method, it is characterised in that methods described is also wrapped
Include：Car tension control step is opened again；
The car tension control step that opens again includes：
Open again the car starting stage, 40%～60% that car tension force is two grades of tension force is opened again in holding；
Open again the car stabilization sub stage, holding opens again car tension force for two grades of tension force.
4. continuous annealing unit IF product made from steel as claimed in claim 3 opens again car control method, it is characterised in that：
Open again the car starting stage described, the strip keeps the low cruise of 30～50m/min.
5. continuous annealing unit IF product made from steel as claimed in claim 4 opens again car control method, it is characterised in that：It is described open car again at the beginning of
Stage beginning continues 2～3 minutes.
6. continuous annealing unit IF product made from steel as claimed in claim 5 opens again car control method, it is characterised in that：
The strip opens again the car starting stage by described, and translational speed is stepped up, until 60m/min is opened again into described in
The car stabilization sub stage.
7. the continuous annealing unit IF product made from steel as described in claim 1～6 opens again car control method, it is characterised in that methods described
Also include：Camber control step；
The camber control step includes：
When running deviation value is more than 100mm, stop immediately；
Car tension force will again be opened increases to the 100%～180% of two grades of tension force.
8. continuous annealing unit IF product made from steel as claimed in claim 7 opens again car control method, it is characterised in that the camber control
Step also includes：
When running deviation value stops more than 100mm, after furnace temperature is decrease continuously to 400 DEG C, will again open car tension force increases to two grades of tension force
100%～180% execution open car again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005555.0A CN106566917B (en) | 2016-11-11 | 2016-11-11 | A kind of continuous annealing unit IF steel product opens vehicle control method again |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005555.0A CN106566917B (en) | 2016-11-11 | 2016-11-11 | A kind of continuous annealing unit IF steel product opens vehicle control method again |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106566917A true CN106566917A (en) | 2017-04-19 |
| CN106566917B CN106566917B (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611005555.0A Active CN106566917B (en) | 2016-11-11 | 2016-11-11 | A kind of continuous annealing unit IF steel product opens vehicle control method again |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384944A (en) * | 2018-02-26 | 2018-08-10 | 首钢京唐钢铁联合有限责任公司 | A method of preventing strip, wooden dipper is bent in the lehr |
| CN109517969A (en) * | 2018-12-21 | 2019-03-26 | 首钢京唐钢铁联合有限责任公司 | A kind of electric radiant tube temprature control method and device |
| CN110306028A (en) * | 2019-07-11 | 2019-10-08 | 山西太钢不锈钢股份有限公司 | Steel strip thickness specification transition control method in strip continuous cold rolling annealing process |
| CN114700373A (en) * | 2022-03-10 | 2022-07-05 | 首钢京唐钢铁联合有限责任公司 | Starting tension control method for raw material plate and related equipment |
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| JPH07290115A (en) * | 1994-04-27 | 1995-11-07 | Hoogovens Groep Bv | Device and method for manufacturing strip of dr steel |
| CN104131152A (en) * | 2014-07-15 | 2014-11-05 | 首钢总公司 | Buckling treatment method of thin and wide specification IF steel in furnace |
| CN106350657A (en) * | 2016-08-29 | 2017-01-25 | 首钢京唐钢铁联合有限责任公司 | Anti-deflection alarm system used in continuous vertical annealing oven |
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2016
- 2016-11-11 CN CN201611005555.0A patent/CN106566917B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07290115A (en) * | 1994-04-27 | 1995-11-07 | Hoogovens Groep Bv | Device and method for manufacturing strip of dr steel |
| CN104131152A (en) * | 2014-07-15 | 2014-11-05 | 首钢总公司 | Buckling treatment method of thin and wide specification IF steel in furnace |
| CN106350657A (en) * | 2016-08-29 | 2017-01-25 | 首钢京唐钢铁联合有限责任公司 | Anti-deflection alarm system used in continuous vertical annealing oven |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384944A (en) * | 2018-02-26 | 2018-08-10 | 首钢京唐钢铁联合有限责任公司 | A method of preventing strip, wooden dipper is bent in the lehr |
| CN108384944B (en) * | 2018-02-26 | 2020-02-21 | 首钢京唐钢铁联合有限责任公司 | Method for preventing buckling of strip steel in annealing furnace |
| CN109517969A (en) * | 2018-12-21 | 2019-03-26 | 首钢京唐钢铁联合有限责任公司 | A kind of electric radiant tube temprature control method and device |
| CN110306028A (en) * | 2019-07-11 | 2019-10-08 | 山西太钢不锈钢股份有限公司 | Steel strip thickness specification transition control method in strip continuous cold rolling annealing process |
| CN114700373A (en) * | 2022-03-10 | 2022-07-05 | 首钢京唐钢铁联合有限责任公司 | Starting tension control method for raw material plate and related equipment |
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| CN106566917B (en) | 2019-03-01 |
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