CN109116891A - A kind of control method of heat-treatment furnace strip Slow cooling - Google Patents
A kind of control method of heat-treatment furnace strip Slow cooling Download PDFInfo
- Publication number
- CN109116891A CN109116891A CN201810861616.6A CN201810861616A CN109116891A CN 109116891 A CN109116891 A CN 109116891A CN 201810861616 A CN201810861616 A CN 201810861616A CN 109116891 A CN109116891 A CN 109116891A
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- Prior art keywords
- slow cooling
- temperature
- output power
- exit plate
- plate temperature
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Links
- 238000010583 slow cooling Methods 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000010438 heat treatment Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 60
- 239000010959 steel Substances 0.000 claims abstract description 60
- 238000005485 electric heating Methods 0.000 claims abstract description 43
- 238000001816 cooling Methods 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000011112 process operation Methods 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Control Of Heat Treatment Processes (AREA)
Abstract
The invention discloses a kind of control methods of heat-treatment furnace strip Slow cooling, are related to metallurgical technology field, under the premise of Slow cooling is temperature controlled, which comprises carry out the strip and blower output power match control of different steel grades；Carry out process speed and electric heating output power match control；It maintains Slow cooling exit plate temperature constant, and controls the belt steel temperature between the lower limit region of Slow cooling exit plate temperature technic index.It realizes in different steel grades and the operation of different process speed, Slow cooling outlet belt steel temperature is in steady state always, by technic index control in lower limit region, reduces blower and electric heating output power to greatest extent, saves the technical effect of power consumption cost.
Description
Technical field
The present invention relates to metallurgical technology field more particularly to a kind of control methods of heat-treatment furnace strip Slow cooling.
Background technique
The heat-treatment furnace design of orientation silicon steel stretching and leveling coating treatment line has Slow cooling section, and the existing electricity of Slow cooling adds
Also the structure that there is water cooling to exchange for heat exchange, automatically selects according to Control for Kiln Temperature and bypass is heated or cooled, pass through circulating fan pair
Strip is cooled down.
But present inventor during technical solution, has found the above-mentioned prior art extremely in realizing the embodiment of the present invention
It has the following technical problems less:
In the prior art since there are certain defects for Control for Kiln Temperature, so that circulating fan and electric heating bypass electric heating output
Always larger so as to cause the Slow cooling outlet band steel plate temperature difference in output state at full capacity, if temperature is too down to less than work
Skill index, temperature too high waste of energy the technical issues of.
Summary of the invention
The embodiment of the present invention is by providing a kind of control method of heat-treatment furnace strip Slow cooling, to solve existing skill
Since there are certain defects for Control for Kiln Temperature in art, so that circulating fan and electric heating bypass electric heating output are always at full capacity
Output state, larger so as to cause the Slow cooling outlet band steel plate temperature difference, if temperature is too down to less than technic index, temperature is too high
The technical issues of waste of energy, realizes in different steel grades and the operation of different process speed, and Slow cooling exports belt steel temperature
Always it is in steady state, by technic index control in lower limit region, reduces blower and electric heating output power, section to greatest extent
The about technical effect of power consumption cost.
To solve the above-mentioned problems, the embodiment of the invention provides a kind of controlling parties of heat-treatment furnace strip Slow cooling
Method, under the premise of Slow cooling is temperature controlled, which comprises carry out the strip and blower output power of different steel grades
With control；Carry out process speed and electric heating output power match control；It maintains Slow cooling exit plate temperature constant, and controls institute
Belt steel temperature is stated between the lower limit region of Slow cooling exit plate temperature technic index.
Preferably, described to carry out different steel grade and blower output power match control, comprising: according to steel strip thickness, under
Blower output power is adjusted, amount of cooling water is reduced, makes the belt steel temperature in the upper limit section of Slow cooling exit plate temperature technic index
Between.
Preferably, the upper limit section of the Slow cooling exit plate temperature technic index is 600-620 DEG C.
Preferably, it is described make the belt steel temperature between Slow cooling exit plate temperature upper limit section after, comprising: reduce institute
Electric heating output power is stated, the strip cooling velocity is promoted, Slow cooling exit plate temperature is reduced to slowly by upper limit region
Between the lower limit region of coolant outlet plate temperature technic index.
Preferably, the lower limit section of the Slow cooling exit plate temperature technic index is 500-535 DEG C.
Preferably, the progress process speed and electric heating output power match control, comprising: in the premise of same steel grade
Under, the process speed and the electric heating output power match control are carried out, maintains the Slow cooling exit plate temperature constant.
Said one or multiple technical solutions in the embodiment of the present invention at least have following one or more technology effects
Fruit:
1, the embodiment of the present invention is by providing a kind of control method of heat-treatment furnace strip Slow cooling, in Slow cooling temperature
Under the premise of degree control, which comprises carry out the strip and blower output power match control of different steel grades；Carry out technique
Speed and electric heating output power match control；It maintains Slow cooling exit plate temperature constant, and controls the belt steel temperature slow
Between the lower limit region of slow cool down exit plate temperature technic index.It solves in the prior art since Control for Kiln Temperature has certain lack
It falls into, so that circulating fan and electric heating bypass electric heating output are in output state at full capacity always, so as to cause Slow cooling
The outlet band steel plate temperature difference is larger, if temperature too down to less than technic index, temperature too high waste of energy the technical issues of, realize
When different steel grades and different process speed are run, Slow cooling outlet belt steel temperature is in steady state always, and technique is referred to
Mark control reduces blower and electric heating output power to greatest extent, saves the technical effect of power consumption cost in lower limit region.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
Fig. 1 is a kind of process signal of control method of heat-treatment furnace strip Slow cooling provided in an embodiment of the present invention
Figure；
Fig. 2 is steel grade and blower output power matching relationship figure in the embodiment of the present invention；
Fig. 3 is process speed and electric heating output power matching relationship figure in the embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of control methods of heat-treatment furnace strip Slow cooling, to solve the prior art
In since Control for Kiln Temperature is there are certain defect so that circulating fan and electric heating bypass electric heating output are always in defeated at full capacity
It does well, it is larger so as to cause the Slow cooling outlet band steel plate temperature difference, if temperature is too down to less than technic index, temperature too Gao Lang
It realizes in different steel grades and the operation of different process speed the technical issues of taking the energy, Slow cooling, which exports belt steel temperature, to be begun
It is in steady state eventually, by technic index control in lower limit region, reduces blower and electric heating output power to greatest extent, saves
The technical effect of power consumption cost.
In order to solve the above technical problem, the present invention provides technical solution general thought it is as follows: carry out different steel grades
Strip and blower output power match control；Carry out process speed and electric heating output power match control；Maintain Slow cooling
Exit plate temperature is constant, and controls the belt steel temperature between the lower limit region of Slow cooling exit plate temperature technic index.It solves
In the prior art since there are certain defects for Control for Kiln Temperature, so that circulating fan and electric heating bypass electric heating output are always located
In output state at full capacity, it is larger to export the band steel plate temperature difference so as to cause Slow cooling, if temperature too down to less than technic index,
Temperature too high waste of energy the technical issues of, realize different steel grades and different process speed operation when, Slow cooling outlet
Belt steel temperature is in steady state always, by technic index control in lower limit region, reduces blower to greatest extent and electric heating is defeated
Power out saves the technical effect of power consumption cost.
Technical solution of the present invention is described in detail below by attached drawing and specific embodiment, it should be understood that the present invention
Specific features in embodiment and embodiment are the detailed description to technical scheme, rather than to present techniques
The restriction of scheme, in the absence of conflict, the technical characteristic in the embodiment of the present invention and embodiment can be combined with each other.
Embodiment one
The embodiment of the invention provides a kind of control methods of heat-treatment furnace strip Slow cooling, please refer to Fig. 1 to Fig. 3,
Under the premise of Slow cooling is temperature controlled, which comprises
Step S110: the strip and blower output power match control of different steel grades are carried out；
Further, described to carry out different steel grade and blower output power match control, comprising: according to steel strip thickness,
Blower output power is lowered, amount of cooling water is reduced, makes the belt steel temperature in the upper limit area of Slow cooling exit plate temperature technic index
Between between；The upper limit section of the Slow cooling exit plate temperature technic index is 600-620 DEG C.
Further, it is described make the belt steel temperature between Slow cooling exit plate temperature upper limit section after, comprising: reduce
The electric heating output power promotes the strip cooling velocity, Slow cooling exit plate temperature is reduced to by upper limit region slow
Between the lower limit region of slow cool down exit plate temperature technic index；The lower limit section of the Slow cooling exit plate temperature technic index is
500-535℃。
Specifically, the embodiment of the present invention by Slow cooling regional temperature Control System Design optimize, to steel grade with
Blower output power and process operation speed and electric heating output power carry out match control, so realize different steel grades,
When different process operation speed, by Slow cooling exit plate temperature control system lower limit section (technic index is 500-620 DEG C), most
Blower and electric heating output power are reduced to limits, power consumption cost is saved.Under current Slow cooling temperature control mode,
Blower and electric heating are in clipping output state simultaneously.In same process speed, steel grade difference (strip width one
Cause), strip is thinner, and cooling is faster, and therefore, the embodiment of the present application proposes to carry out the strip and blower output power of different steel grades
Match control, i.e., it is corresponding to lower blower output power according to the thickness of strip, amount of cooling water is reduced, makes the belt steel temperature slow
Between the upper limit section of slow cool down exit plate temperature technic index, wherein the upper limit of the Slow cooling exit plate temperature technic index
Section is 600-620 DEG C.Make the belt steel temperature between Slow cooling exit plate temperature upper limit section after, reduce it is described electricity plus
Thermal output promotes the strip cooling velocity, and Slow cooling exit plate temperature is reduced to 500-535 DEG C by upper limit region,
I.e. by Slow cooling exit plate temperature drop down to the lower limit section of technic index, and then reach in the operation of different steel grades, by band
Steel is controlled in the temperature that Slow cooling exports in the lower limit section of technic index, reduces blower and electric heating output power, significantly
Save the technical effect of power consumption cost.
Step S120: process speed and electric heating output power match control are carried out；
Step S130: it maintains Slow cooling exit plate temperature constant, and controls the belt steel temperature in Slow cooling exit plate
Between the lower limit region of warm technic index.
Further, the progress process speed and electric heating output power match control, comprising: before same steel grade
It puts, carries out the process speed and the electric heating output power match control, maintain the Slow cooling exit plate temperature not
Become.
Specifically, process speed is faster in the case where same steel grade, cooling effect is poorer, electric heating output work
Rate is smaller, in consideration of it, the embodiment of the present application proposes to carry out match control to process operation speed and electric heating output power, that is, exists
Under the premise of same steel grade, the process speed and the electric heating output power match control are carried out, remains described slowly cold
But exit plate temperature is constant, and by the belt steel temperature Slow cooling exit plate temperature control system technic index lower limit region it
Between, and then reached in the operation of different process speed, so that the belt steel temperature of Slow cooling outlet is in steady state always,
And control in the lower limit section of technic index, reduce the technical effect of electric heating output power.
Said one or multiple technical solutions in the embodiment of the present invention at least have following one or more technology effects
Fruit:
1, the embodiment of the present invention is by providing a kind of control method of heat-treatment furnace strip Slow cooling, in Slow cooling temperature
Under the premise of degree control, which comprises carry out the strip and blower output power match control of different steel grades；Carry out technique
Speed and electric heating output power match control；It maintains Slow cooling exit plate temperature constant, and controls the belt steel temperature slow
Between the lower limit region of slow cool down exit plate temperature technic index.It solves in the prior art since Control for Kiln Temperature has certain lack
It falls into, so that circulating fan and electric heating bypass electric heating output are in output state at full capacity always, so as to cause Slow cooling
The outlet band steel plate temperature difference is larger, if temperature too down to less than technic index, temperature too high waste of energy the technical issues of, realize
When different steel grades and different process speed are run, Slow cooling outlet belt steel temperature is in steady state always, and technique is referred to
Mark control reduces blower and electric heating output power to greatest extent, saves the technical effect of power consumption cost in lower limit region.
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 can 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, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention
And its within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of control method of heat-treatment furnace strip Slow cooling, under the premise of Slow cooling is temperature controlled, feature exists
In, which comprises
Carry out the strip and blower output power match control of different steel grades；
Carry out process speed and electric heating output power match control；
It maintains Slow cooling exit plate temperature constant, and controls the belt steel temperature under Slow cooling exit plate temperature technic index
It limits between region.
2. the method as described in claim 1, which is characterized in that the different steel grade of the progress matches control with blower output power
System, comprising:
According to steel strip thickness, blower output power is lowered, amount of cooling water is reduced, makes the belt steel temperature in Slow cooling exit plate temperature
Between the upper limit section of technic index.
3. method according to claim 2, which is characterized in that the upper limit section of the Slow cooling exit plate temperature technic index
It is 600-620 DEG C.
4. method according to claim 2, which is characterized in that described to make the belt steel temperature in Slow cooling exit plate temperature
After limiting between section, comprising:
The electric heating output power is reduced, the strip cooling velocity is promoted, by Slow cooling exit plate temperature by upper limit region
It is reduced between the lower limit region of Slow cooling exit plate temperature technic index.
5. method as claimed in claim 4, which is characterized in that the lower limit section of the Slow cooling exit plate temperature technic index
It is 500-535 DEG C.
6. the method as described in claim 1, which is characterized in that the progress process speed matches control with electric heating output power
System, comprising:
Under the premise of same steel grade, the process speed and the electric heating output power match control are carried out, described in maintenance
Slow cooling exit plate temperature is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861616.6A CN109116891B (en) | 2018-08-01 | 2018-08-01 | Control method for slow cooling of strip steel of heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861616.6A CN109116891B (en) | 2018-08-01 | 2018-08-01 | Control method for slow cooling of strip steel of heat treatment furnace |
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| Publication Number | Publication Date |
|---|---|
| CN109116891A true CN109116891A (en) | 2019-01-01 |
| CN109116891B CN109116891B (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810861616.6A Active CN109116891B (en) | 2018-08-01 | 2018-08-01 | Control method for slow cooling of strip steel of heat treatment furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111154966A (en) * | 2020-01-16 | 2020-05-15 | 宝钢湛江钢铁有限公司 | Online automatic adjusting method suitable for continuous annealing unit slow cooling section and fast cooling section cooling fans |
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| WO1994000605A1 (en) * | 1992-06-23 | 1994-01-06 | Nkk Corporation | Metal band cooling apparatus and cooling method therefor |
| CN102279607A (en) * | 2011-07-06 | 2011-12-14 | 联众（广州）不锈钢有限公司 | Annealing furnace zone temperature control method |
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| CN205024290U (en) * | 2015-08-18 | 2016-02-10 | 本钢板材股份有限公司 | Continuous annealing furnace overaging section belted steel cooling device |
| CN105573350A (en) * | 2015-12-28 | 2016-05-11 | 佛山市索奥斯玻璃技术有限公司 | Frequency automatic tracking control method of cooling fan of glass tempering furnace |
| CN107447099A (en) * | 2016-05-31 | 2017-12-08 | 宝钢工业炉工程技术有限公司 | Silicon strip steel heat treatment stove controls cooling section hot blast cooling device |
-
2018
- 2018-08-01 CN CN201810861616.6A patent/CN109116891B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994000605A1 (en) * | 1992-06-23 | 1994-01-06 | Nkk Corporation | Metal band cooling apparatus and cooling method therefor |
| CN102279607A (en) * | 2011-07-06 | 2011-12-14 | 联众（广州）不锈钢有限公司 | Annealing furnace zone temperature control method |
| CN203715692U (en) * | 2013-12-31 | 2014-07-16 | 中山凯旋真空技术工程有限公司 | Temperature control system and vacuum air-cooling thermal treatment furnace |
| CN205024290U (en) * | 2015-08-18 | 2016-02-10 | 本钢板材股份有限公司 | Continuous annealing furnace overaging section belted steel cooling device |
| CN105573350A (en) * | 2015-12-28 | 2016-05-11 | 佛山市索奥斯玻璃技术有限公司 | Frequency automatic tracking control method of cooling fan of glass tempering furnace |
| CN107447099A (en) * | 2016-05-31 | 2017-12-08 | 宝钢工业炉工程技术有限公司 | Silicon strip steel heat treatment stove controls cooling section hot blast cooling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111154966A (en) * | 2020-01-16 | 2020-05-15 | 宝钢湛江钢铁有限公司 | Online automatic adjusting method suitable for continuous annealing unit slow cooling section and fast cooling section cooling fans |
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| CN109116891B (en) | 2021-04-09 |
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Address after: 064400 No. 025 Zhao'an Street, Qian'an Economic Development Zone, Tangshan City, Hebei Province Patentee after: Shougang Zhixin Electromagnetic Materials (Qian'an) Co.,Ltd. Country or region after: China Address before: 064400 No. 025, Zhao an street, western industrial area, Qian'an, Tangshan City, Hebei Patentee before: SHOUGANG ZHIXIN QIAN'AN ELECTROMAGNETIC MATERIALS Co.,Ltd. Country or region before: China |