CN110373533A - A kind of method for controlling furnace temperature preventing oblique trace in the steel stove of broadband - Google Patents
A kind of method for controlling furnace temperature preventing oblique trace in the steel stove of broadband Download PDFInfo
- Publication number
- CN110373533A CN110373533A CN201910486029.8A CN201910486029A CN110373533A CN 110373533 A CN110373533 A CN 110373533A CN 201910486029 A CN201910486029 A CN 201910486029A CN 110373533 A CN110373533 A CN 110373533A
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- China
- Prior art keywords
- furnace
- temperature
- section
- bringing
- broadband
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 18
- 239000010959 steel Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000000137 annealing Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000011105 stabilization Methods 0.000 abstract description 6
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- 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 present invention discloses a kind of method for controlling furnace temperature for preventing oblique trace in the steel stove of broadband comprising the step of it is as follows: the proparea furnace temperature of annealing furnace bringing-up section be 600-630 DEG C, middle area's furnace temperature be 730-810 DEG C；Wherein, each segment in area is that ladder-elevating temperature mode heats in bringing-up section, and adjacent interval section increasing extent of temperature is controlled at 40-70 DEG C；Thin wide plate speed of service in furnace is 180-220mpm.The beneficial effects of the present invention are: by before reducing annealing furnace bringing-up section/middle area's furnace temperature, and the ladder-elevating temperature amplitude of each segment of reasonable disposition bringing-up section reduces the illeffects of furnace roller centering force, run strip can with lower velocity-stabilization in continuous annealing furnace；Thin broadband steel may be implemented stable operation under lower furnace speed and be conducive to production stabilization without generating oblique trace defect and quality improves.
Description
Technical field
The present invention relates to cold-rolled steel sheet production technology field, specially a kind of Control for Kiln Temperature for preventing oblique trace in the steel stove of broadband
Method.
Background technique
In steel industry cold-rolled steel sheet continuous annealing production line, convexity roller technology is used in annealing furnace, passes through centering force
Sideslip when correction strip is run in furnace, the wide plate of > 1400mm wide for plate, since plate and roller contact area are big, each item
Convexity roller is relatively large to the centering force of strip, and during being heated to recrystallization temperature or more in heating furnace, strip is strong
Degree reduces, and is plastically deformed under the centering force repeated action of convexity roller, forms one of arc wrinkle together in belt steel surface
Oblique trace defect.
Summary of the invention
Object of the present invention is to for deficiency existing for prior art described above, providing one kind prevents oblique trace in the steel stove of broadband
Method for controlling furnace temperature.
The technical solution adopted by the present invention is that: a kind of method for controlling furnace temperature preventing oblique trace in the steel stove of broadband comprising
Steps are as follows: the proparea furnace temperature of annealing furnace bringing-up section is 600-630 DEG C, and middle area's furnace temperature is 730-810 DEG C；Wherein, in bringing-up section
Each segment in area is that ladder-elevating temperature mode heats, and adjacent interval section increasing extent of temperature is controlled at 40-70 DEG C；Thin wide plate is run in furnace
Speed is 180-220mpm.
Area's plate temperature (thin wide plate temperature) and the roller temperature temperature difference are less than 20 DEG C in bringing-up section.
Thin wide plate speed of service in furnace is 200mpm.
The thin wide plate is ultra-low-carbon steel (carbon content≤0.0021%), and plate thickness is less than 0.8mm, and plate is wider than 1400mm.
Compared with prior art, the beneficial effects of the present invention are: by before reducing annealing furnace bringing-up section/middle area's furnace temperature, and
The ladder-elevating temperature amplitude of each segment of reasonable disposition bringing-up section reduces the illeffects of furnace roller centering force, is moving back strip continuously
It can be run in stove with lower velocity-stabilization；Stable operation may be implemented under lower furnace speed without generating oblique trace in thin broadband steel
Defect, is conducive to production stabilization and quality improves.
Detailed description of the invention
Fig. 1 is that the present invention prevents bringing-up section Control for Kiln Temperature curve signal in the method for controlling furnace temperature of oblique trace in the steel stove of broadband
Figure.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below, it should be noted that embodiment is not constituted
Limitation to the claimed scope of the invention.
A kind of method for controlling furnace temperature preventing oblique trace in the steel stove of broadband, especially for ultra-low-carbon steel (carbon content≤
0.0021%) thin wide plate (the wide > 1400mm of plate thickness < 0.8mm& plate), in order to guarantee Annealing Property needs, overcomes oblique trace defect,
The step of raising quality, use includes the following: that the proparea furnace temperature of annealing furnace bringing-up section is reduced to 605-625 from 690 DEG C before
DEG C, middle area's furnace temperature is 730-810 DEG C；Wherein, each segment in area is that ladder-elevating temperature mode heats, and reasonable disposition adds in bringing-up section
The ladder-elevating temperature amplitude of each segment of hot arc makes the control of adjacent interval section increasing extent of temperature at 50-60 DEG C, to widen each segment rank
The temperature difference of ladder heating；Guarantee bringing-up section go out side band steel plate temperature reach target zone while, thin wide plate runs speed in furnace
The low-speed stable that degree is 185-215mpm is run.In order to make thin wide plate that oblique trace will not occur, guarantee the bringing-up section when low speed is run
20 DEG C of temperature difference < of middle area's plate temperature and roller temperature, because section plate temperature is crossed and is greater than roller temperature and will lead to pair in bringing-up section at low speeds
The increase of middle power and generate oblique trace.Preferably, the control of adjacent interval section increasing extent of temperature is at 55 DEG C.Thin wide plate speed of service in furnace
For 200mpm.
Bringing-up section is divided into 8 heating zones from 1 to 8 in annealing furnace.Preferably, as shown in Figure 1, middle area 3 and middle area 4 it
Between temperature be 730-770 DEG C, temperature between middle area 5 and middle area 6 is 770-810 DEG C, wherein the middle part (area 3-6) in middle area
Plate temperature be to reduce with respect to furnace temperature, and 20 DEG C of plate temperature and roller temperature temperature difference <, the in this way illeffects of reduction furnace roller centering force make
Strip can be run in continuous annealing furnace with lower velocity-stabilization；Thin broadband steel stable operation under lower furnace speed may be implemented and
Oblique trace defect will not be generated, is conducive to production stabilization and quality improves.Product testing is detected by respective standard, compound standard
It is required that.
For the material of different model, Control for Kiln Temperature parameter is as follows:
Through detecting, the thin wide plate of ultra-low-carbon steel obtained by upper table parameter will not generate oblique trace defect, be conducive to production and stablize
And quality improves, compound corresponding standard requirements.
As described above, the only preferred embodiment of the utility model, when cannot be limited with this utility model implementation range,
I.e. generally according to simple equivalent changes and modifications made by the utility model claim and novel description, it is new all still to belong to this
In the range of type patent covers.
Claims (4)
1. a kind of method for controlling furnace temperature for preventing oblique trace in the steel stove of broadband, which is characterized in that the steps included are as follows for it: annealing furnace
The proparea furnace temperature of bringing-up section is 600-630 DEG C, and middle area's furnace temperature is 730-810 DEG C；Wherein, each segment in area is ladder in bringing-up section
Heating mode heating, adjacent interval section increasing extent of temperature are controlled at 40-70 DEG C；Thin wide plate speed of service in furnace is 180-
220mpm。
2. a kind of method for controlling furnace temperature for preventing oblique trace in the steel stove of broadband according to claim 1, which is characterized in that heating
Duan Zhongqu plate temperature and the roller temperature temperature difference are less than 20 DEG C.
3. a kind of method for controlling furnace temperature for preventing oblique trace in the steel stove of broadband according to claim 1, which is characterized in that described
Thin wide plate speed of service in furnace is 200mpm.
4. a kind of method for controlling furnace temperature for preventing oblique trace in the steel stove of broadband according to claim 3, which is characterized in that described
Thin wide plate is ultra-low-carbon steel, and plate thickness is less than 0.8mm, and plate is wider than 1400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910486029.8A CN110373533A (en) | 2019-06-05 | 2019-06-05 | A kind of method for controlling furnace temperature preventing oblique trace in the steel stove of broadband |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910486029.8A CN110373533A (en) | 2019-06-05 | 2019-06-05 | A kind of method for controlling furnace temperature preventing oblique trace in the steel stove of broadband |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110373533A true CN110373533A (en) | 2019-10-25 |
Family
ID=68249791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910486029.8A Pending CN110373533A (en) | 2019-06-05 | 2019-06-05 | A kind of method for controlling furnace temperature preventing oblique trace in the steel stove of broadband |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110373533A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1088247A (en) * | 1996-09-09 | 1998-04-07 | Kawasaki Steel Corp | Method for controlling furnace temperature in continuous annealing furnace |
| JP2009030137A (en) * | 2007-07-30 | 2009-02-12 | Jfe Steel Kk | Operation method of annealing line |
| CN103710523A (en) * | 2013-12-20 | 2014-04-09 | 鞍钢股份有限公司 | Method for controlling wrinkle in continuous annealing of wide interstitial-free steel (IF) |
| CN106282530A (en) * | 2016-08-29 | 2017-01-04 | 首钢京唐钢铁联合有限责任公司 | A kind of application process of hot-rolling pattern |
| CN109207711A (en) * | 2018-10-22 | 2019-01-15 | 攀钢集团西昌钢钒有限公司 | A kind of wrinkle resistant control method of 0.4mm strip IF steel continuous annealing |
| CN109777945A (en) * | 2018-12-21 | 2019-05-21 | 首钢京唐钢铁联合有限责任公司 | A kind of strip temperature control method and device |
| CN111411214A (en) * | 2020-04-17 | 2020-07-14 | 新余钢铁股份有限公司 | Method for preventing buckling and deflection in strip steel continuous annealing furnace with thickness of not more than 0.5mm |
| CN113215385A (en) * | 2021-05-10 | 2021-08-06 | 马鞍山钢铁股份有限公司 | Control method for preventing buckling of hot-dip galvanized thin-specification product |
-
2019
- 2019-06-05 CN CN201910486029.8A patent/CN110373533A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1088247A (en) * | 1996-09-09 | 1998-04-07 | Kawasaki Steel Corp | Method for controlling furnace temperature in continuous annealing furnace |
| JP2009030137A (en) * | 2007-07-30 | 2009-02-12 | Jfe Steel Kk | Operation method of annealing line |
| CN103710523A (en) * | 2013-12-20 | 2014-04-09 | 鞍钢股份有限公司 | Method for controlling wrinkle in continuous annealing of wide interstitial-free steel (IF) |
| CN106282530A (en) * | 2016-08-29 | 2017-01-04 | 首钢京唐钢铁联合有限责任公司 | A kind of application process of hot-rolling pattern |
| CN109207711A (en) * | 2018-10-22 | 2019-01-15 | 攀钢集团西昌钢钒有限公司 | A kind of wrinkle resistant control method of 0.4mm strip IF steel continuous annealing |
| CN109777945A (en) * | 2018-12-21 | 2019-05-21 | 首钢京唐钢铁联合有限责任公司 | A kind of strip temperature control method and device |
| CN111411214A (en) * | 2020-04-17 | 2020-07-14 | 新余钢铁股份有限公司 | Method for preventing buckling and deflection in strip steel continuous annealing furnace with thickness of not more than 0.5mm |
| CN113215385A (en) * | 2021-05-10 | 2021-08-06 | 马鞍山钢铁股份有限公司 | Control method for preventing buckling of hot-dip galvanized thin-specification product |
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| 刘丹等: "薄宽规格冷轧汽车板退火板形的改善", 《轧钢》 * |
| 黄海生: "温度控制对薄规格带钢炉内跑偏的影响", 《轧钢》 * |
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Application publication date: 20191025 |