CN110093495A - Control method for inhibiting buckling of strip steel in heating section - Google Patents
Control method for inhibiting buckling of strip steel in heating section Download PDFInfo
- Publication number
- CN110093495A CN110093495A CN201910499613.7A CN201910499613A CN110093495A CN 110093495 A CN110093495 A CN 110093495A CN 201910499613 A CN201910499613 A CN 201910499613A CN 110093495 A CN110093495 A CN 110093495A
- Authority
- CN
- China
- Prior art keywords
- furnace
- strip
- wooden dipper
- working
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 127
- 239000010959 steel Substances 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000010438 heat treatment Methods 0.000 title claims abstract description 16
- 230000002401 inhibitory effect Effects 0.000 title abstract description 13
- 238000000137 annealing Methods 0.000 claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims description 22
- 238000002791 soaking Methods 0.000 claims description 11
- 238000005098 hot rolling Methods 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000011217 control strategy Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009472 formulation Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007323 disproportionation reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- C21D9/573—Continuous furnaces for strip or wire with cooling
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)
- Control Of Heat Treatment Processes (AREA)
Abstract
The invention provides a control method for inhibiting buckling of strip steel in a heating section, which comprises the following steps: acquiring furnace condition information of the annealing furnace, and acquiring the temperature of the strip steel in the annealing furnace and the temperature of a furnace roller when the furnace condition information is the normal production furnace condition; judging the buckling type of the strip steel according to the temperature of the strip steel and the temperature of the furnace roller, if the buckling type of the strip steel is hot buckling, reducing the running speed of the strip steel in the furnace area, and if the buckling type of the strip steel is cold buckling, improving the running speed of the strip steel in the furnace area; and when the furnace condition is the start-up furnace condition, controlling and increasing the running speed of the strip steel in the furnace area to the lowest running speed of the strip steel. The technical problem that the buckling of the strip steel is aggravated due to the fact that a control method is inaccurate in the prior art is solved. The method achieves the technical effects that a targeted control strategy is carried out on the buckling of the band steel in the heating section according to the specific conditions of the furnace condition, the control strategy is more accurate, and the band breakage accident in the furnace caused by the continuous buckling of the buckled band steel in the furnace is inhibited.
Description
Technical field
The present invention relates to annealing furnace control technology field more particularly to a kind of controlling parties for inhibiting heating section strip steel wooden dipper song
Method.
Background technique
Cold rolling vertical type annealing furnace is broadly divided into two big region hot-zones and cold-zone, and hot-zone is mainly by preheating section, bringing-up section, soaking
Duan Zucheng；Cold-zone mainly by slow cooling section, rapid cooling section, overaging section, cold section and water quenching section form eventually, such as band in furnace when production
Steel occurs wooden dipper song and not only causes serious strip quality defect, also influences to connect anneling production line steady production (caused by wooden dipper song
Band accident of breaking in furnace at least needs 24 hours from processing accident to resuming production).Strip wooden dipper song main cause by tension distribution not
Width direction caused by is compressed；The thermal stress that temperature distributing disproportionation generates；Frictional force and the squeezing action etc. for rotating furnace roller.One
Wooden dipper song occurs in furnace for denier strip, such as cannot timely adopt an effective measure, then very big probability leads to unplanned blow-on lid.According to
The raw region of wooden dipper curly hair, the traditional definition to wooden dipper song in strip steel furnace are that the wooden dipper song that hot-zone occurs is exactly that (strip is heating hot wooden dipper song
The wooden dipper that section, soaking zone occur is bent), the wooden dipper song that occurs of cold-zone be exactly that bent (strip is in overaging section, the wooden dipper of cold section of generation eventually for cold wooden dipper
It is bent).The measure that different types of wooden dipper song is taken is also just different.
But present invention applicant has found that the prior art at least has the following technical problems:
The formulation of wooden dipper song type, control method is carried out according to the raw region of wooden dipper curly hair in the prior art, there are control methods
Inaccuracy and cause strip wooden dipper song aggravate the technical issues of.
Summary of the invention
The embodiment of the invention provides a kind of control methods for inhibiting heating section strip steel wooden dipper song, solve root in the prior art
The formulation that wooden dipper song type, control method are carried out according to the raw region of wooden dipper curly hair causes strip wooden dipper bent there are control method inaccuracy
The technical issues of aggravation.
In view of the above problems, it the present invention provides a kind of control method for inhibiting heating section strip steel wooden dipper song, is moved back applied to one
Stove, when occurring strip wooden dipper song in the annealing furnace bringing-up section, which comprises obtain the working of a furnace letter of the annealing furnace
Breath, wherein the working of a furnace when working of a furnace information includes the normal production working of a furnace, plays vehicle；When the working of a furnace information is the normal production working of a furnace
When, obtain belt steel temperature in the annealing furnace, furnace roller temperature；According to the belt steel temperature and the furnace roller temperature, described in judgement
The type of strip wooden dipper song, wherein the type of the strip wooden dipper song includes that hot wooden dipper is bent, cold wooden dipper is bent；If the strip wooden dipper song type is
The hot wooden dipper is bent, then reduces the speed of service of the furnace zone steel, if the strip wooden dipper song type is that cold wooden dipper is bent, described in raising
The speed of service of furnace zone steel；When the working of a furnace information has been vehicle when the working of a furnace, control improves the operation speed of the furnace zone steel
It spends to strip minimum operation speed.
Preferably, described that the type of the strip wooden dipper song is judged according to the belt steel temperature and the furnace roller temperature, packet
Include: when the belt steel temperature is higher than the furnace roller temperature, the strip wooden dipper song type is that cold wooden dipper is bent；When the belt steel temperature is low
When the furnace roller temperature, the strip wooden dipper song type is that hot wooden dipper is bent.
Preferably, the normal production working of a furnace includes: the soaking condition working of a furnace, cooling the state working of a furnace, the temperature constant state working of a furnace.
Preferably, when the working of a furnace of the annealing furnace is the cooling state working of a furnace, if the strip wooden dipper song type
Bent for the hot wooden dipper, then the range of decrease for reducing furnace area strip speed is controlled in 5~20m/min.
Preferably, when the working of a furnace of the annealing furnace is the soaking condition working of a furnace, if the strip wooden dipper song type
Bent for the cold wooden dipper, then the amplification for increasing furnace area strip speed is controlled in 5~20m/min.
Preferably, when the working of a furnace of the annealing furnace is the temperature constant state working of a furnace, strip wooden dipper song type is unknown, shuts down.
Preferably, the working of a furnace includes: when playing vehicle immediately after shutting down, when playing vehicle again after shutdown cooling when described vehicle.
Preferably, described when the working of a furnace information has been vehicle when the annealing furnace working of a furnace is that the shutdown plays vehicle immediately
When the working of a furnace when, control improves the speed of service of the furnace zone steel to strip minimum operation speed, comprising: controls the furnace zone
The speed of service of steel is quickly mentioned in the given time by 0m/min to the strip minimum operation speed.
Preferably, described to work as the working of a furnace information when playing vehicle again after the annealing furnace working of a furnace is shutdown cooling
When to play vehicle when the working of a furnace, control improves the speed of service of the furnace zone steel to strip minimum operation speed, comprising: described in control
The speed of service of furnace zone steel is gradually mentioned stage by stage to the strip minimum operation speed.
Preferably, the speed of service of the control furnace zone steel is gradually mentioned stage by stage to the strip minimum operation speed
Degree, comprising: obtain the thickness of the strip；As thickness T≤T of the strip0When, the first stage controls the strip operation speed
Degree is with furnace zone steel creep speed vsCreep t01Duration, wherein T0=[(Tmax-Tmin)/10+Tmin], t01=max
(lHotsection/vs,ε)；Second stage controls the strip with (vs+vrThe speed of)/2 is creeped t02Duration, wherein t02=max
(t01/2,ε)；Phase III controls the strip with vrSpeed is creeped t03Duration, wherein t03=ε；When the thickness of the strip
For Tk-1< T≤TkWhen, wherein k be steel strip thickness grade classification section, and, k be 3~5 positive integers, the first stage control described in
Strip speed is with the furnace zone steel creep speed vsCreep tk1Duration, wherein tk1=max ((t01-k*ε),ε)；Second
Strip is described in stage control with (vs+vrThe speed of)/2 is creeped tk2Duration, wherein tk2=max (tk1/2,ε)；Phase III controls institute
Strip is stated with vrSpeed is creeped tk3Duration, wherein tk3≡ ε, wherein T0For strip base thickness, TminMinimum thickness is designed for strip
Degree, TmaxMaximum gauge, T are designed for stripkFor the kth unit strip steel thickness section upper limit, vsFor the furnace zone steel creep speed,
lHotsectionFor hot-zone strip length, vrFor minimum operation speed, t01For steel strip thickness T0When corresponding first stage strip is creeped
Between, t02For steel strip thickness T0Corresponding second stage strip crawl time, t03For steel strip thickness T0Corresponding phase III strip is creeped
Time, tk1For steel strip thickness TkCorresponding first stage strip crawl time, tk2For steel strip thickness TkCorresponding second stage strip is climbed
Row time, tk3For steel strip thickness TkCorresponding phase III strip crawl time, ε are most short hot-rolling duration, and, ε is 3~10min.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit:
A kind of control method inhibiting heating section strip steel wooden dipper song provided in an embodiment of the present invention, is applied to an annealing furnace, when
When occurring strip wooden dipper song in the annealing furnace bringing-up section, which comprises obtain the working of a furnace information of the annealing furnace, wherein
The working of a furnace when working of a furnace information includes the normal production working of a furnace, plays vehicle；When the working of a furnace information is the normal production working of a furnace, institute is obtained
State belt steel temperature in annealing furnace, furnace roller temperature；According to the belt steel temperature and the furnace roller temperature, the strip wooden dipper song is judged
Type, wherein the type of the strip wooden dipper song includes that hot wooden dipper is bent, cold wooden dipper is bent, under the specific working of a furnace according to the temperature of strip and
The actual conditions of furnace roller temperature judge wooden dipper song type, and judging result is more accurate, it is reasonable according to the variation of the working of a furnace to realize
The effect for defining wooden dipper song type, if the strip wooden dipper song type is that the hot wooden dipper is bent, reduces in the normal production working of a furnace
The speed of service of the furnace zone steel improves the operation speed of the furnace zone steel if the strip wooden dipper song type is that cold wooden dipper is bent
Degree；When the working of a furnace information has been vehicle when the working of a furnace, control improves the speed of service of the furnace zone steel to strip minimum operation
Speed.Reach according to working of a furnace concrete condition for strip in the wooden dipper Qu Jinhang targetedly control strategy of bringing-up section, has controlled plan
It is slightly more accurate, effectively inhibit the strip of wooden dipper song to continue wooden dipper song in furnace and lead to band accident of breaking in furnace, guarantees annealing furnace production
The technical effect of line steady production carries out wooden dipper song type, control according to the raw region of wooden dipper curly hair in the prior art to solve
The formulation of method there is technical issues that control method inaccuracy and cause strip wooden dipper song.
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 the flow diagram that the control method of section strip steel wooden dipper song is heated in a kind of inhibition of the embodiment of the present invention；
Fig. 2 is a kind of control flow block diagram for the control method for inhibiting heating section strip steel wooden dipper song in the embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of control methods for inhibiting heating section strip steel wooden dipper song, for solving in the prior art
The formulation that wooden dipper song type, control method are carried out according to the raw region of wooden dipper curly hair causes strip wooden dipper there are control method inaccuracy
The technical issues of song aggravation.
Technical solution general thought provided by the invention is as follows:
Obtain the working of a furnace information of the annealing furnace, wherein the working of a furnace information includes the normal production working of a furnace, plays Che Shilu
Condition；When the working of a furnace information is the normal production working of a furnace, belt steel temperature in the annealing furnace, furnace roller temperature are obtained；According to described
Belt steel temperature and the furnace roller temperature judge the type of the strip wooden dipper song, wherein the type of the strip wooden dipper song includes hot wooden dipper
Bent, cold wooden dipper is bent；If the strip wooden dipper song type is that the hot wooden dipper is bent, the speed of service of the furnace zone steel is reduced, if described
Strip wooden dipper song type is that cold wooden dipper is bent, then improves the speed of service of the furnace zone steel；The working of a furnace when the working of a furnace information has been vehicle
When, control improves the speed of service of the furnace zone steel to strip minimum operation speed.Reach according to working of a furnace concrete condition needle
To strip in the wooden dipper Qu Jinhang targetedly control strategy of bringing-up section, control strategy is more accurate, effectively inhibits the strip of wooden dipper song
Continue wooden dipper song in furnace and lead to band accident of breaking in furnace, guarantees the technical effect of annealing furnace production line steady production.
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 making creative work, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of flow diagram for the control method for inhibiting heating section strip steel wooden dipper song in the embodiment of the present invention.This hair
Bright embodiment provides a kind of control method for inhibiting heating section strip steel wooden dipper song, is applied to an annealing furnace, when the annealing furnace adds
When occurring strip wooden dipper song in hot arc, referring to FIG. 1, the described method includes:
Step 10: obtaining the working of a furnace information of the annealing furnace, wherein the working of a furnace information includes the normal production working of a furnace, rises
Working of a furnace when vehicle.
Specifically, if wooden dipper Qu Xianxiang has occurred in the annealing furnace in process of production, in order to avoid wooden dipper Qu Yanchong makes
At disconnected band accident, control strategy formulation is carried out according to the concrete condition of strip wooden dipper song, first have to be determined that wooden dipper song occurs for strip
The reason of, concrete analysis is carried out according to wooden dipper song reason and makes control strategy, the main reason for strip wooden dipper is bent are as follows: by tension distribution
The compression of width direction caused by unevenness, temperature distributing disproportionation generate thermal stress, frictional force and rotation furnace roller squeezing action etc., pass through
Adjust strip hot-zone in furnace the speed of service come alleviate strip wooden dipper caused by above-mentioned reason song, avoid wooden dipper song aggravate and caused by
Unplanned blow-on lid influences normal production.When wooden dipper song occurs in the annealing furnace, it is first determined the current working of a furnace of annealing furnace, root
Specific control strategy is analyzed according to the different working of a furnaces, due in actual production because the variation of the working of a furnace will cause wooden dipper song type point
Analysis inaccuracy, and influence the bent strategy of wooden dipper, for example, tradition has occurred wooden dipper song and should improve speed in cold-zone controls wooden dipper song,
But hot wooden dipper song occurs in cold-zone since once the working of a furnace is changed strip, if can persistently aggravate the wooden dipper of strip using conventional measures
Bent situation effectively causes band accident of breaking in furnace.
Step 20: when the working of a furnace information is the normal production working of a furnace, obtaining belt steel temperature in the annealing furnace, furnace roller temperature
Degree.
Step 30: according to the belt steel temperature and the furnace roller temperature, judging the type of the strip wooden dipper song, wherein institute
The type for stating strip wooden dipper song includes that hot wooden dipper is bent, cold wooden dipper is bent.
Further, described that the type of the strip wooden dipper song is judged according to the belt steel temperature and the furnace roller temperature, packet
Include: when the belt steel temperature is higher than the furnace roller temperature, the strip wooden dipper song type is that cold wooden dipper is bent；When the belt steel temperature is low
When the furnace roller temperature, the strip wooden dipper song type is that hot wooden dipper is bent.
Specifically, when wooden dipper Qu Xianxiang occurs, when the annealing furnace is in the working of a furnace normally produced, according to the wooden dipper of strip
Bent type is specifically chosen different control strategies, and the method for the embodiment of the present invention is according to the temperature of strip and the temperature difference of furnace roller temperature
The type of wooden dipper song is defined, different from the prior art according to the region progress Type division that wooden dipper song occurs, if the strip
The temperature that temperature is higher than the furnace roller is then that cold wooden dipper is bent, is that hot wooden dipper is bent if the temperature of strip is lower than the temperature of the furnace roller, root
The type that wooden dipper song occurs for the division more accurate response of wooden dipper song type strip is carried out according to the temperature of strip and furnace roller, is avoided
Tactful mistake is caused because wooden dipper song type is inaccurate, the wooden dipper for aggravating strip is bent.It realizes and heat is rationally carried out according to the variation of the working of a furnace
The wooden dipper Qu Dingyi of wooden dipper Qu Yuleng wooden dipper song, the type of more accurate reaction strip wooden dipper song.
Step 40: if the strip wooden dipper song type is that the hot wooden dipper is bent, the speed of service of the furnace zone steel is reduced, if
The strip wooden dipper song type is that cold wooden dipper is bent, then improves the speed of service of the furnace zone steel.
Further, the normal production working of a furnace includes: the soaking condition working of a furnace, cooling the state working of a furnace, the temperature constant state working of a furnace.
Further, when the working of a furnace of the annealing furnace is the cooling state working of a furnace, if the strip wooden dipper song class
Type is that the hot wooden dipper is bent, then the range of decrease for reducing furnace area strip speed is controlled in 5~20m/min.
Further, when the working of a furnace of the annealing furnace is the soaking condition working of a furnace, if the strip wooden dipper song class
Type is that the cold wooden dipper is bent, then the amplification for increasing furnace area strip speed is controlled in 5~20m/min.
Further, when the working of a furnace of the annealing furnace is the temperature constant state working of a furnace, strip wooden dipper song type is unknown, stops
Machine.
Specifically, different wooden dipper song types selects different control strategies, the normal life under the normally production working of a furnace
It produces the working of a furnace and is divided into cooling state, soaking condition, temperature constant state, as shown in Fig. 2, under cooling state, i.e. when DT/Dt < 0,
In, DT is the temperature variation of strip, Dt is time variation amount, as the temperature variation of time change strip is less than zero, then
Illustrate for for the temperature variation of strip as the time gradually decreases, the temperature of strip can be lower than furnace roller temperature at this time under cooling state
Degree, the wooden dipper song type that the strip occurs is that hot wooden dipper is bent, in order to inhibit wooden dipper song situation, then by reducing the strip in furnace area
The speed of service sufficiently carries out hot-rolling, to reduce the temperature difference between the belt steel temperature and the furnace roller, gradually alleviates strip
Wooden dipper it is bent；Under soaking condition, i.e. in Fig. 2 when DT/Dt > 0, the temperature of strip is soaking condition, thus the variable quantity of strip is big
In zero, the temperature variation of strip can increase recently with the time at this time, and the temperature of strip can be higher than the temperature of the furnace roller, institute
The wooden dipper song type for stating strip generation is that cold wooden dipper is bent, then should reduce strip and the furnace roller by improving the speed of service of strip
Time of contact, and the temperature difference both reduced avoids the strip wooden dipper Qu Zaici from aggravating；If under temperature constant state, i.e. DT/Dt=
When 0, illustrate that the temperature of strip is unchanged at this time, i.e. the temperature of strip be it is invariable, due to belt steel temperature and the furnace roller
Temperature is identical, then not can determine that the type and reason of wooden dipper song, need to carry out the processing of furnace area shutdown at this time, to strip in bringing-up section
The wooden dipper song of generation targetedly takes different control measure according to the working of a furnace, effectively to carry out the inhibition of wooden dipper song situation.
Step 50: when the working of a furnace information has been vehicle when the working of a furnace, control improves the speed of service of the furnace zone steel extremely
Strip minimum operation speed.
Further, the working of a furnace includes: when playing vehicle immediately after shutting down, when playing vehicle again after shutdown cooling when described vehicle.
Further, described when the working of a furnace information is when the annealing furnace working of a furnace is that the shutdown plays vehicle immediately
When vehicle when the working of a furnace, control improves the speed of service of the furnace zone steel to strip minimum operation speed, comprising: controls the furnace area
The speed of service of strip is quickly mentioned in the given time (such as in 2 minutes) by 0m/min to the strip minimum operation speed.
Further, described when the working of a furnace is believed when playing vehicle again after the annealing furnace working of a furnace is shutdown cooling
Breath has been when be vehicle when the working of a furnace, the speed of service of the control raising furnace zone steel to strip minimum operation speed, comprising: control institute
The speed of service for stating furnace zone steel is gradually mentioned stage by stage to the strip minimum operation speed.
Specifically, when strip wooden dipper song occurs, in the case where the working of a furnace when annealing furnace has been vehicle, due to annealing furnace
Vehicle needs are played to be run by out of service, thus the speed of service of strip is to improve the shape of the speed of service in annealing furnace
State, but need specifically to be controlled according to the wooden dipper song situation of the strip, to alleviate the wooden dipper song of strip, working of a furnace when described vehicle
Be divided into after shutdown when playing vehicle immediately (in Fig. 2 when t1 < t2, i.e., strip in furnace practical residence time t1 less than the longest residence time
T2), (practical residence time t1 is greater than longest residence time t2 in strip steel furnace, when strip stops when playing vehicle again after shutdown cooling
Between longer temperature reduce), when playing vehicle after the shutdown immediately, at this time due to having carried out the belt steel temperature in vehicle furnace after shutting down immediately
It is higher than the temperature of furnace roller in the furnace, thus the wooden dipper song type that strip occurs is that cold wooden dipper is bent, it is fast in order to alleviate cold wooden dipper song needs
Speed raises speed to strip minimum operation speed, can reduce the time of contact of strip and furnace roller in this way, avoids the wooden dipper of aggravation strip bent,
Such as fall to open during quick speed-raising, then needs to play vehicle again after reducing furnace temperature.If strip wooden dipper curly hair is given birth to after shutting down cooling again
When playing vehicle, the temperature of strip will be less than the temperature of the furnace roller, then the wooden dipper Qu Weire wooden dipper occurred is bent, at this time should slowly will be described
The speed of service of strip increases to the strip minimum operation speed, and sufficiently carries out hot-rolling, to avoid the aggravation of wooden dipper song.Reach
According to working of a furnace concrete condition for strip in the wooden dipper Qu Jinhang targetedly control strategy of bringing-up section, control strategy is more accurate,
Effectively inhibit the strip of wooden dipper song to continue wooden dipper song in furnace and lead to band accident of breaking in furnace, guarantees annealing furnace production line steady production
Technical effect is deposited to solve the formulation for carrying out wooden dipper song type, control method according to the raw region of wooden dipper curly hair in the prior art
The technical issues of control method inaccuracy causes strip wooden dipper song to aggravate.
Further, the speed of service of the control furnace zone steel is gradually mentioned stage by stage to the strip minimum operation
Speed, comprising: obtain the thickness of the strip；As thickness T≤T of the strip0When, the first stage controls the strip operation
Speed is with furnace zone steel creep speed vsCreep t01Duration, wherein T0=[(Tmax-Tmin)/10+Tmin], t01=max
(lHotsection/vs,ε)；Second stage controls the strip with (vs+vrThe speed of)/2 is creeped t02Duration, wherein t02=max
(t01/2,ε)；Phase III controls the strip with vrSpeed is creeped t03Duration, wherein t03=ε；When the thickness of the strip
For Tk-1< T≤TkWhen, wherein k be steel strip thickness grade classification section, and, k be 3~5 positive integers, the first stage control described in
Strip speed is with the furnace zone steel creep speed vsCreep tk1Duration, wherein tk1=max ((t01-k*ε),ε)；Second
Strip is described in stage control with (vs+vrThe speed of)/2 is creeped tk2Duration, wherein tk2=max (tk1/2,ε)；Phase III controls institute
Strip is stated with vrSpeed is creeped tk3Duration, wherein tk3≡ ε, ε are 3~10min, wherein T0For strip base thickness, TminFor band
Steel designs minimum thickness, TmaxMaximum gauge, T are designed for stripkFor the kth unit strip steel thickness section upper limit, vsFor the furnace zone
Steel creep speed, lHotsectionFor hot-zone strip length, vrFor minimum operation speed, t01For steel strip thickness T0The corresponding first stage
Strip crawl time, t02For steel strip thickness T0Corresponding second stage strip crawl time, t03For steel strip thickness T0Corresponding third rank
Section strip steel crawl time, tk1For steel strip thickness TkCorresponding first stage strip crawl time, tk2For steel strip thickness TkCorresponding second
Stage strip crawl time, tk3For steel strip thickness TkCorresponding phase III strip crawl time, ε are most short hot-rolling duration, and, ε
For 3~10min.
Specifically, when the strip wooden dipper curly hair is raw when playing vehicle again after shutting down cooling, at this time due to the temperature of strip
It is decreased, and the temperature of furnace roller is lower than the furnace roller temperature because playing Che Zengjia, i.e., the described belt steel temperature, then the wooden dipper song occurred is
Hot wooden dipper is bent, and the hot wooden dipper song occurred when for playing vehicle should slowly improve the speed of service, to sufficiently carry out hot-rolling, makes the furnace roller
The temperature difference between temperature and the belt steel temperature reduces, and carries out the aggravation for avoiding strip wooden dipper song situation.After cooling down for shutdown again
The wooden dipper song occurred when secondary vehicle should take the strategy slowly to raise speed stage by stage, to sufficiently carry out hot-rolling, reduce the band
Temperature difference between steel and the furnace roller adjusts the curved state of wooden dipper, but should consider the thickness factor of strip herein, according to different
Thickness uses different sagings, to avoid disconnected band situation is caused, to guarantee the steady production of annealing furnace production line.
Embodiment two
In order to preferably introduce the technical characterstic and use that the control method of section strip steel wooden dipper song is heated in a kind of inhibition of the invention
On the way, applicable cases of the invention are described in detail below in conjunction with specific embodiment.
The embodiment of the present invention is in 1700 continuous annealing unit of A iron company to a kind of control for inhibiting heating section strip steel wooden dipper song
The application of method, annealing furnace hot length 915m in 1700 continuous annealing unit of A iron company, furnace area creep speed are 30m/min, fortune
Scanning frequency degree 60m/min strip 0.3~2.5mm of design thickness, plays application of the vehicle strategy in 1700 continuous annealing units immediately after shutdown
As shown in table 1 below, table 1 is to play vehicle speed control strategy immediately after 1700 continuous annealing annealing furnaces are shut down:
Table 1
Application of the vehicle strategy in 1700 continuous annealing units is played again after shutting down cooling, and as shown in table 2, table 2 is 1700 continuous annealings
Annealing furnace plays vehicle speed control strategy after shutting down cooling again:
Table 2
Through the embodiment of the present invention to the control of the bent strategy of wooden dipper, band in 1700 continuous annealing unit of A iron company is effectively controlled
The wooden dipper song situation of steel inhibits the strip of wooden dipper song to continue band accident of breaking in furnace caused by wooden dipper song in furnace, ensure that annealing furnace produces
The steady production of line.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit:
A kind of control method inhibiting heating section strip steel wooden dipper song provided in an embodiment of the present invention, is applied to an annealing furnace, when
When occurring strip wooden dipper song in the annealing furnace bringing-up section, which comprises obtain the working of a furnace information of the annealing furnace, wherein
The working of a furnace when working of a furnace information includes the normal production working of a furnace, plays vehicle；When the working of a furnace information is the normal production working of a furnace, institute is obtained
State belt steel temperature in annealing furnace, furnace roller temperature；According to the belt steel temperature and the furnace roller temperature, the strip wooden dipper song is judged
Type, wherein the type of the strip wooden dipper song includes that hot wooden dipper is bent, cold wooden dipper is bent；If the strip wooden dipper song type is that the hot wooden dipper is bent,
The speed of service of the furnace zone steel is then reduced, if the strip wooden dipper song type is that cold wooden dipper is bent, improves the furnace zone steel
The speed of service；When the working of a furnace information has been vehicle when the working of a furnace, control improves the speed of service of the furnace zone steel to strip most
The low speed of service.Reached according to working of a furnace concrete condition for strip bringing-up section wooden dipper Qu Jinhang targetedly control strategy,
Control strategy is more accurate, effectively inhibits the strip of wooden dipper song to continue wooden dipper song in furnace and lead to band accident of breaking in furnace, guarantees annealing
The technical effect of furnace production line steady production carries out wooden dipper song class according to the raw region of wooden dipper curly hair in the prior art to solve
The formulation of type, control method there is technical issues that control method inaccuracy and cause strip wooden dipper song.
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 (10)
1. it is a kind of inhibit heating section strip steel wooden dipper song control method, be applied to an annealing furnace, when in the annealing furnace bringing-up section out
When existing strip wooden dipper song, which is characterized in that the described method includes:
Obtain the working of a furnace information of the annealing furnace, wherein the working of a furnace when working of a furnace information includes the normal production working of a furnace, plays vehicle；
When the working of a furnace information is the normal production working of a furnace, belt steel temperature in the annealing furnace, furnace roller temperature are obtained；
According to the belt steel temperature and the furnace roller temperature, the type of the strip wooden dipper song is judged, wherein the strip wooden dipper song
Type includes that hot wooden dipper is bent, cold wooden dipper is bent；
If the strip wooden dipper song type is that the hot wooden dipper is bent, the speed of service of the furnace zone steel is reduced, if the strip wooden dipper
Bent type is that cold wooden dipper is bent, then improves the speed of service of the furnace zone steel；
When the working of a furnace information has been vehicle when the working of a furnace, control improves the speed of service of the furnace zone steel to strip minimum operation
Speed.
2. the method as described in claim 1, which is characterized in that it is described according to the belt steel temperature and the furnace roller temperature, sentence
Break the type of the strip wooden dipper song, comprising:
When the belt steel temperature is higher than the furnace roller temperature, the strip wooden dipper song type is that cold wooden dipper is bent；
When the belt steel temperature is lower than the furnace roller temperature, the strip wooden dipper song type is that hot wooden dipper is bent.
3. the method as described in claim 1, which is characterized in that the normal production working of a furnace includes: the soaking condition working of a furnace, cooling
The state working of a furnace, the temperature constant state working of a furnace.
4. method as claimed in claim 3, which is characterized in that when the working of a furnace of the annealing furnace is the cooling state working of a furnace
When, if the strip wooden dipper song type is that the hot wooden dipper is bent, the range of decrease for reducing furnace area strip speed is controlled 5
~20m/min.
5. method as claimed in claim 3, which is characterized in that when the working of a furnace of the annealing furnace is the soaking condition working of a furnace
When, if the strip wooden dipper song type is that the cold wooden dipper is bent, the amplification for increasing furnace area strip speed is controlled 5
~20m/min.
6. method as claimed in claim 3, which is characterized in that when the working of a furnace of the annealing furnace is the temperature constant state working of a furnace
When, strip wooden dipper song type is unknown, shuts down.
7. the method as described in claim 1, which is characterized in that the working of a furnace includes: when playing vehicle immediately after shutting down, stops when described vehicle
When playing vehicle again after machine cooling.
8. the method for claim 7, which is characterized in that when the annealing furnace working of a furnace is that the shutdown plays vehicle immediately,
It is described when the working of a furnace information has been vehicle when the working of a furnace, control improves the speed of service of the furnace zone steel to strip minimum operation
Speed, comprising:
The speed of service for controlling the furnace zone steel is quickly mentioned in the given time by 0m/min to the strip minimum operation speed
Degree.
9. the method for claim 7, which is characterized in that when the annealing furnace working of a furnace is that the shutdown rises again after cooling
Che Shi, described when the working of a furnace information has been vehicle when the working of a furnace, control improves the speed of service of the furnace zone steel to strip most
The low speed of service, comprising:
The speed of service for controlling the furnace zone steel is gradually mentioned stage by stage to the strip minimum operation speed.
10. method as claimed in claim 9, which is characterized in that the speed of service of the control furnace zone steel is stage by stage
It gradually mentions to the strip minimum operation speed, comprising:
Obtain the thickness of the strip；
As thickness T≤T of the strip0When, the first stage controls the strip speed with furnace zone steel creep speed vsIt climbs
Row t01Duration, wherein T0=[(Tmax-Tmin)/10+Tmin], t01=max (lHotsection/vs,ε)；
Second stage controls the strip with (vs+vrThe speed of)/2 is creeped t02Duration, wherein t02=max (t01/2,ε)；
Phase III controls the strip with vrSpeed is creeped t03Duration, wherein t03=ε；
When the strip is with a thickness of Tk-1< T≤TkWhen, wherein k is steel strip thickness grade classification section, and, k is 3~5 just whole
Number, first stage control the strip speed with the furnace zone steel creep speed vsCreep tk1Duration, wherein tk1=max
((t01-k*ε),ε)；
Second stage controls the strip with (vs+vrThe speed of)/2 is creeped tk2Duration, wherein tk2=max (tk1/2,ε)；
Phase III controls the strip with vrSpeed is creeped tk3Duration, wherein tk3≡ ε,
Wherein, T0For strip base thickness, TminMinimum thickness, T are designed for stripmaxMaximum gauge, T are designed for stripkFor kth
The unit strip steel thickness section upper limit, vsFor the furnace zone steel creep speed, lHotsectionFor hot-zone strip length, vrFor minimum fortune
Scanning frequency degree, t01For steel strip thickness T0Corresponding first stage strip crawl time, t02For steel strip thickness T0Corresponding second stage strip
Crawl time, t03For steel strip thickness T0Corresponding phase III strip crawl time, tk1For steel strip thickness TkCorresponding first stage band
Steel crawl time, tk2For steel strip thickness TkCorresponding second stage strip crawl time, tk3For steel strip thickness TkThe corresponding phase III
Strip crawl time, ε are most short hot-rolling duration, and, ε is 3~10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910499613.7A CN110093495B (en) | 2019-06-11 | 2019-06-11 | Control method for inhibiting buckling of strip steel in heating section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910499613.7A CN110093495B (en) | 2019-06-11 | 2019-06-11 | Control method for inhibiting buckling of strip steel in heating section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110093495A true CN110093495A (en) | 2019-08-06 |
| CN110093495B CN110093495B (en) | 2020-12-15 |
Family
ID=67450658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910499613.7A Active CN110093495B (en) | 2019-06-11 | 2019-06-11 | Control method for inhibiting buckling of strip steel in heating section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110093495B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990293A (en) * | 2022-06-20 | 2022-09-02 | 宝钢湛江钢铁有限公司 | Method for automatically controlling buckling of cold section of vertical annealing furnace |
| CN114990326A (en) * | 2022-06-20 | 2022-09-02 | 宝钢湛江钢铁有限公司 | Method for automatically controlling buckling of hot section of vertical annealing furnace |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030064239A1 (en) * | 2001-12-27 | 2003-04-03 | Daido Metal Company Ltd. | Copper-based, sintered sliding material and method of producing same |
| CN102747212A (en) * | 2012-07-30 | 2012-10-24 | 首钢总公司 | System and method for optimizing heat buckling in strip steel furnace |
| KR101320309B1 (en) * | 2011-10-04 | 2013-10-23 | 주식회사 포스코 | Method for redusing buckle of annealing furnace |
| CN103468922A (en) * | 2012-06-06 | 2013-12-25 | 上海梅山钢铁股份有限公司 | Control method for preventing thermal buckling of annealing furnace strip steel |
| JP2016025263A (en) * | 2014-07-23 | 2016-02-08 | Ｊｆｅスチール株式会社 | Method for manufacturing ferrite-based stainless foil for solar battery substrate |
| CN105316474A (en) * | 2014-06-12 | 2016-02-10 | 上海梅山钢铁股份有限公司 | Control method of reducing buckled material operation risk in annealing furnace |
| CN105821198A (en) * | 2015-01-06 | 2016-08-03 | 上海梅山钢铁股份有限公司 | Control method for preventing buckling of thin strip steel during shutdown of continuous annealing furnace |
| CN106148674A (en) * | 2015-04-27 | 2016-11-23 | 宝钢不锈钢有限公司 | Continuous annealing unit bent and camber control tension adjustment as target with hot wooden dipper |
| CN106350657A (en) * | 2016-08-29 | 2017-01-25 | 首钢京唐钢铁联合有限责任公司 | Buckling-proof alarm system applied to continuous vertical annealing furnace |
| CN108384944A (en) * | 2018-02-26 | 2018-08-10 | 首钢京唐钢铁联合有限责任公司 | Method for preventing buckling of strip steel in annealing furnace |
| CN109766593A (en) * | 2018-12-21 | 2019-05-17 | 首钢京唐钢铁联合有限责任公司 | Method and device for evaluating buckling risk of strip steel in furnace |
-
2019
- 2019-06-11 CN CN201910499613.7A patent/CN110093495B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030064239A1 (en) * | 2001-12-27 | 2003-04-03 | Daido Metal Company Ltd. | Copper-based, sintered sliding material and method of producing same |
| KR101320309B1 (en) * | 2011-10-04 | 2013-10-23 | 주식회사 포스코 | Method for redusing buckle of annealing furnace |
| CN103468922A (en) * | 2012-06-06 | 2013-12-25 | 上海梅山钢铁股份有限公司 | Control method for preventing thermal buckling of annealing furnace strip steel |
| CN102747212A (en) * | 2012-07-30 | 2012-10-24 | 首钢总公司 | System and method for optimizing heat buckling in strip steel furnace |
| CN105316474A (en) * | 2014-06-12 | 2016-02-10 | 上海梅山钢铁股份有限公司 | Control method of reducing buckled material operation risk in annealing furnace |
| JP2016025263A (en) * | 2014-07-23 | 2016-02-08 | Ｊｆｅスチール株式会社 | Method for manufacturing ferrite-based stainless foil for solar battery substrate |
| CN105821198A (en) * | 2015-01-06 | 2016-08-03 | 上海梅山钢铁股份有限公司 | Control method for preventing buckling of thin strip steel during shutdown of continuous annealing furnace |
| CN106148674A (en) * | 2015-04-27 | 2016-11-23 | 宝钢不锈钢有限公司 | Continuous annealing unit bent and camber control tension adjustment as target with hot wooden dipper |
| CN106350657A (en) * | 2016-08-29 | 2017-01-25 | 首钢京唐钢铁联合有限责任公司 | Buckling-proof alarm system applied to continuous vertical annealing furnace |
| CN108384944A (en) * | 2018-02-26 | 2018-08-10 | 首钢京唐钢铁联合有限责任公司 | Method for preventing buckling of strip steel in annealing furnace |
| CN109766593A (en) * | 2018-12-21 | 2019-05-17 | 首钢京唐钢铁联合有限责任公司 | Method and device for evaluating buckling risk of strip steel in furnace |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990293A (en) * | 2022-06-20 | 2022-09-02 | 宝钢湛江钢铁有限公司 | Method for automatically controlling buckling of cold section of vertical annealing furnace |
| CN114990326A (en) * | 2022-06-20 | 2022-09-02 | 宝钢湛江钢铁有限公司 | Method for automatically controlling buckling of hot section of vertical annealing furnace |
| CN114990326B (en) * | 2022-06-20 | 2024-02-23 | 宝钢湛江钢铁有限公司 | Automatic control method for buckling of hot section of vertical annealing furnace |
| CN114990293B (en) * | 2022-06-20 | 2024-02-23 | 宝钢湛江钢铁有限公司 | Automatic control method for buckling of cold section of vertical annealing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110093495B (en) | 2020-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102418034B (en) | Production method for high-grade non-oriented silicon steel | |
| CN110093495A (en) | Control method for inhibiting buckling of strip steel in heating section | |
| CN104245988B (en) | Cold-rolled steel sheet and manufacture method thereof | |
| CN101376956A (en) | Method for controlling alloyed hot dip galvanizing steel plate coating phase structure and alloyed hot dip galvanizing steel plate | |
| CN108359775A (en) | Method for setting tension of vertical continuous annealing furnace | |
| CN108384944A (en) | Method for preventing buckling of strip steel in annealing furnace | |
| CN103320689A (en) | Aluminum-zinc hot plating deep drawing steel with thick gauge of more than 1.2 mm, and manufacturing method thereof | |
| CN104087839B (en) | The ultra-thin laser weld steel for saw blade substrate of hot rolling and production method | |
| CN105499300A (en) | Production technology of copper strip for lock | |
| CN109402513A (en) | A kind of high magnetic induction grain-oriented silicon steel production method | |
| CN106086361A (en) | A kind of Industrial Steam Turbine Rotors Aided forging piecewise heat treatment method | |
| CN107893155B (en) | Method for eliminating surface color difference defect of phosphorus-containing high-strength IF steel | |
| CN107532264B (en) | Alloyed zinc hot dip galvanized raw sheet and its manufacturing method and alloyed hot-dip galvanized steel sheet | |
| CN106337156B (en) | The manufacturing method of anti-corrosion Langaloy | |
| CN103710518B (en) | A kind of method eliminating steel plate roll marks by controlling furnace roller dross | |
| CN109550793A (en) | A kind of method of high-chrome super-purity ferrite stainless steel hot-rolling sticking defect in reduction | |
| CN102925795A (en) | Production method for controlling transverse and longitudinal electromagnetic properties of low-grade and medium-grade non-oriented electrical steel products | |
| CN113458142B (en) | Medium-temperature common oriented silicon steel and preparation method thereof | |
| CN110484694B (en) | Deformation phase change cooperative regulation and control method for bearing matrix fine grain structure | |
| CN106591554A (en) | One-time cold-rolling method capable of improving magnetic performance of low-temperature high-magnetic-induction oriented silicon steel | |
| CN104726785A (en) | Medium-chromium ferritic stainless steel without corrosion channel at crystal boundary and production method of stainless steel | |
| CN105506269B (en) | The anti-deviation method of the phosphorous high-strength steel of continuous annealing unit | |
| CN110331276A (en) | Anti-buckling start method for annealing furnace | |
| KR100821088B1 (en) | Manufacturing method of high manganese stainless steel | |
| CN114107623B (en) | Heat treatment method for reducing timeliness of SPHC hot rolled plate coil by online isothermal aging removal annealing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |