CN106148652B - Method and device for continuously annealing cold-rolled sheet - Google Patents
Method and device for continuously annealing cold-rolled sheet Download PDFInfo
- Publication number
- CN106148652B CN106148652B CN201610749702.9A CN201610749702A CN106148652B CN 106148652 B CN106148652 B CN 106148652B CN 201610749702 A CN201610749702 A CN 201610749702A CN 106148652 B CN106148652 B CN 106148652B
- Authority
- CN
- China
- Prior art keywords
- rolled sheet
- annealing temperature
- flat cold
- annealing
- cold
- 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.)
- Active
Links
- 238000000137 annealing Methods 0.000 title claims abstract description 216
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 62
- 239000010959 steel Substances 0.000 claims abstract description 62
- 230000008859 change Effects 0.000 claims abstract description 22
- 238000004364 calculation method Methods 0.000 claims description 14
- 238000005097 cold rolling Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000033764 rhythmic process 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
- 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
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 invention relates to the technical field of metal smelting, in particular to a method and a device for continuously annealing a cold-rolled sheet, which comprises the following steps: determining a thickness variation between the first cold-rolled sheet and the second cold-rolled sheet which are sequentially annealed; when the strip steel welding seam between the first cold-rolled thin plate and the second cold-rolled thin plate is conveyed to an inlet loop section of an annealing unit, adjusting the annealing temperature from the current first annealing temperature to a second annealing temperature according to the thickness change between the first cold-rolled thin plate and the second cold-rolled thin plate; and when the strip steel welding seam is transmitted to the heating section of the annealing unit, adjusting the annealing temperature from the second annealing temperature to the first annealing temperature. The method can ensure that the annealing degree is controlled under the condition of not changing the running speed, the buckling phenomenon of the first cold-rolled sheet and the second cold-rolled sheet can not occur, and the stability of the through plate and the yield are not influenced.
Description
Technical field
The present invention relates to metal smelt technical field more particularly to a kind of method and devices of flat cold-rolled sheet continuous annealing.
Background technology
Continuous annealing unit is the important link of cold rolled strip steel production, it has, and flow is short, yield is high, good product quality etc.
Series of advantages is indispensable annealing device.As product variety, specification are continuously increased, the speed of annealing furnace is caused,
Belt steel temperature, hourly output are converting always.In general, strip of the thickness more than 0.9mm expects that thickness is less than or equal to 0.9mm to be thick
Strip be thin material.Heating output power is up to 100% when thick material strip steel is because of production, when changing specification continuous annealing according to hour
Yield equal principle can only take reduction of speed measure, to control annealing grade, because of strip thickness, be not susceptible to wooden dipper song.Thin material strip steel because
It is limited by producing line rhythm of production and designed capacity, heating output power is not up to 100%, if when changing specification continuous annealing
Also speed is controlled according to hourly output equal principle, because lifting speed operates wooden dipper song easily occurs for thin material strip steel, not only influences
The logical plate of producing line is stablized, and has an effect on yield.
Invention content
It is thin to solve cold rolling in the prior art by providing a kind of method and device of flat cold-rolled sheet continuous annealing by the present invention
Plate controls annealing grade that the technical issues of wooden dipper is bent easily occurs when changing specification continuous annealing using the speed of service is changed.
An embodiment of the present invention provides a kind of method of flat cold-rolled sheet continuous annealing, including：
Determine the thickness change between the first flat cold-rolled sheet and the second flat cold-rolled sheet sequentially annealed；
Strip steel weld joint between first flat cold-rolled sheet and second flat cold-rolled sheet is sent to entering for annealing unit
During mouthful kink section, according to the thickness change between first flat cold-rolled sheet and second flat cold-rolled sheet, by annealing temperature by
The first current annealing temperature is adjusted to the second annealing temperature；
When the strip steel weld joint is sent to the bringing-up section of the annealing unit, the annealing temperature is moved back by described second
Fiery temperature is adjusted to first annealing temperature.
Optionally, the strip steel weld joint between first flat cold-rolled sheet and second flat cold-rolled sheet, which is sent to, moves back
It, will according to the thickness change between first flat cold-rolled sheet and second flat cold-rolled sheet during entry loop section of lighter group
Annealing temperature is adjusted to the second annealing temperature by the first current annealing temperature, including：
When the strip steel weld joint is sent to the entry loop section, and the strip steel weld joint and the in the annealing unit
The distance between piece furnace roller for first apart from when, according to the thickness between first flat cold-rolled sheet and second flat cold-rolled sheet
Degree variation, second annealing temperature is adjusted to by the annealing temperature by first annealing temperature；
Wherein, the calculation formula of first distance is：S1For described first away from
From SnFor the cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LENTRYLOOPERFor
The length of the entry loop section, first flat cold-rolled sheet and second flat cold-rolled sheet it is of same size.
Optionally, it is described the annealing unit is sent in the strip steel weld joint bringing-up section when, by the annealing temperature
First annealing temperature is adjusted to by second annealing temperature, including：
When the strip steel weld joint is sent to the bringing-up section, and the strip steel weld joint and first in the annealing unit
When the distance between furnace roller is second distance, the annealing temperature is adjusted to first annealing by second annealing temperature
Temperature；
Wherein, the calculation formula of the second distance is：S2For the second distance, SnFor
The cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LRTFFor the bringing-up section
Length, first flat cold-rolled sheet and second flat cold-rolled sheet it is of same size.
Optionally, when the thickness difference of the thickness of first flat cold-rolled sheet and second flat cold-rolled sheet, described the
Temperature difference between one annealing temperature and second annealing temperature is 10~15 DEG C.
Optionally, it further includes：
When the thickness of first flat cold-rolled sheet is identical with the thickness of second flat cold-rolled sheet, the strip is being transmitted
During weld seam is by the entry loop section and the bringing-up section, keep the annealing temperature constant.
An alternative embodiment of the invention provides a kind of device of flat cold-rolled sheet continuous annealing, including：
Thickness change determining module, between determining the first flat cold-rolled sheet and the second flat cold-rolled sheet sequentially annealed
Thickness change；
First annealing temperature adjusts module, for the band between first flat cold-rolled sheet and second flat cold-rolled sheet
When steel weld seam is sent to the entry loop section of annealing unit, according between first flat cold-rolled sheet and second flat cold-rolled sheet
Thickness change, annealing temperature is adjusted to the second annealing temperature by the first current annealing temperature；
Second annealing temperature adjusts module, during for being sent to the bringing-up section of the annealing unit in the strip steel weld joint,
The annealing temperature is adjusted to first annealing temperature by second annealing temperature.
Optionally, the first annealing temperature adjustment module is specifically used for：
When the strip steel weld joint is sent to the entry loop section, and the strip steel weld joint and the in the annealing unit
The distance between piece furnace roller for first apart from when, according to the thickness between first flat cold-rolled sheet and second flat cold-rolled sheet
Degree variation, second annealing temperature is adjusted to by the annealing temperature by first annealing temperature；
Wherein, the calculation formula of first distance is：S1For described first away from
From SnFor the cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LENTRYLOOPERFor
The length of the entry loop section, first flat cold-rolled sheet and second flat cold-rolled sheet it is of same size.
Optionally, the second annealing temperature adjustment module is specifically used for：
When the strip steel weld joint is sent to the bringing-up section, and the strip steel weld joint and first in the annealing unit
When the distance between furnace roller is second distance, the annealing temperature is adjusted to first annealing by second annealing temperature
Temperature；
Wherein, the calculation formula of the second distance is：S2For the second distance, SnFor
The cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LRTFFor the bringing-up section
Length, first flat cold-rolled sheet and second flat cold-rolled sheet it is of same size.
Optionally, when the thickness difference of the thickness of first flat cold-rolled sheet and second flat cold-rolled sheet, described the
Temperature difference between one annealing temperature and second annealing temperature is 10~15 DEG C.
Optionally, it further includes：
Annealing temperature keeps module, for working as the thickness of the thickness of first flat cold-rolled sheet and second flat cold-rolled sheet
When identical, during the strip steel weld joint is transmitted by the entry loop section and the bringing-up section, the annealing is kept
It is temperature-resistant.
One or more of embodiment of the present invention technical solution, has at least the following technical effects or advantages：
The present invention is cold first according to the thickness change between the first flat cold-rolled sheet and the second flat cold-rolled sheet of continuous annealing
When rolling the strip steel weld joint between thin plate and the second flat cold-rolled sheet and being sent to entry loop section and bringing-up section, respectively to annealing temperature into
Row adjustment, so as to ensure to control annealing grade in the case of the speed of service for not changing strip, the first cold rolling
The phenomenon that wooden dipper is bent will not occur for thin plate and the second flat cold-rolled sheet, neither influence logical plate and stablize, and do not influence yield.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of method of flat cold-rolled sheet continuous annealing in the embodiment of the present invention；
Fig. 2 is a kind of device of flat cold-rolled sheet continuous annealing in the embodiment of the present invention.
Specific embodiment
To solve flat cold-rolled sheet in the prior art annealing is controlled using the speed of service is changed when changing specification continuous annealing
The technical issues of wooden dipper is bent easily occurs for degree, and the present invention provides a kind of method and device of flat cold-rolled sheet continuous annealing.
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
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
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of method of flat cold-rolled sheet continuous annealing, as shown in Figure 1, the method includes following
Step：
Step 101：Determine the thickness change between the first flat cold-rolled sheet and the second flat cold-rolled sheet sequentially annealed.
Step 102：Strip steel weld joint between the first flat cold-rolled sheet and the second flat cold-rolled sheet is sent to entering for annealing unit
During mouthful kink section, according to the thickness change between the first flat cold-rolled sheet and the second flat cold-rolled sheet, by annealing temperature by current the
One annealing temperature is adjusted to the second annealing temperature.
Step 103：When strip steel weld joint is sent to the bringing-up section of annealing unit, by annealing temperature by the second annealing temperature tune
Whole is the first annealing temperature.
In embodiments of the present invention, the first flat cold-rolled sheet and the welding of the second flat cold-rolled sheet, the first flat cold-rolled sheet and second cold
Rolling has strip steel weld joint between thin plate, when sequentially annealing to the first flat cold-rolled sheet and the second flat cold-rolled sheet, first, determines
Thickness change between first flat cold-rolled sheet and the second flat cold-rolled sheet.Wherein, it provides first to anneal in embodiments of the present invention cold
Thin plate is rolled for the first flat cold-rolled sheet, after annealing is the second flat cold-rolled sheet, that is, anneal sequence is：First the first flat cold-rolled sheet is moved back
Fire, after anneal to the second flat cold-rolled sheet, the first flat cold-rolled sheet is introduced into anneling production line, and annealing life is entered after the second flat cold-rolled sheet
Producing line.Either the first flat cold-rolled sheet or the second flat cold-rolled sheet, after anneling production line is entered, flat cold-rolled sheet first passes through annealing
The entry loop section of unit, then flat cold-rolled sheet pass through annealing unit bringing-up section.
Further, the thickness of the first flat cold-rolled sheet may be identical with the thickness of the second flat cold-rolled sheet, the first flat cold-rolled sheet
Thickness may also be different from the thickness of the second flat cold-rolled sheet, when the first flat cold-rolled sheet thickness and the second flat cold-rolled sheet thickness not
Meanwhile first the thickness of flat cold-rolled sheet may be thicker than the thickness of the second flat cold-rolled sheet, the thickness of the first flat cold-rolled sheet may also compare
The thickness of second flat cold-rolled sheet is thin.
Specifically, when the thickness of the first flat cold-rolled sheet is identical with the thickness of the second flat cold-rolled sheet, in transmission strip weldering
During seam is by entry loop section and bringing-up section, keep annealing temperature constant.If it that is, anneals to the first flat cold-rolled sheet
When annealing temperature for the first annealing temperature, then, the strip steel weld joint between the first flat cold-rolled sheet and the second flat cold-rolled sheet passes through
During entry loop section and bringing-up section, annealing temperature is maintained at the first annealing temperature.
Specifically, when the thickness difference of the thickness of the first flat cold-rolled sheet and the second flat cold-rolled sheet, if the first cold rolling is thin
The thickness of plate is more than the thickness of the second flat cold-rolled sheet, then, the strip steel weld joint between the first flat cold-rolled sheet and the second flat cold-rolled sheet
Be sent to entry loop section, and the distance between the strip steel weld joint and first furnace roller in annealing unit for first apart from when,
Annealing temperature is reduced to the second annealing temperature, the temperature between the first annealing temperature and the second annealing temperature by the first annealing temperature
Degree difference is 10~15 DEG C, and the adjustment frequency of annealing temperature is 5 DEG C/min, and the calculation formula of the first distance is：
Wherein, S1For the first distance, SnFor the cross-sectional area of the first flat cold-rolled sheet, Sn+1Cross section for the second flat cold-rolled sheet
Product, the cross-sectional area are the sectional area in width direction, LENTRYLOOPERFor the length of entry loop section, the first flat cold-rolled sheet and
Two flat cold-rolled sheets it is of same size, due to the first flat cold-rolled sheet thickness be more than the second flat cold-rolled sheet thickness, then it is cold first
Roll thin plate width and the second flat cold-rolled sheet it is of same size when, the cross-sectional area of the first flat cold-rolled sheet is more than the second flat cold-rolled sheet
Cross-sectional area.
Further, bringing-up section is sent to by entry loop section in strip steel weld joint, and in the strip steel weld joint and annealing unit
The distance between first furnace roller when being second distance, annealing temperature is adjusted to the first annealing temperature by the second annealing temperature
Degree, the adjustment frequency of annealing temperature are similarly 5 DEG C/min, the calculation formula of second distance be for：
Wherein, S2For second distance, SnFor the cross-sectional area of the first flat cold-rolled sheet, Sn+1Cross section for the second flat cold-rolled sheet
Product, the cross-sectional area are the sectional area in width direction, LRTFFor the length of bringing-up section, the first flat cold-rolled sheet and the second cold rolling are thin
Plate it is of same size.
In embodiments of the present invention, when thickness of the thickness of the first flat cold-rolled sheet more than the second flat cold-rolled sheet, by band
Steel weld seam improves annealing temperature when being sent to entry loop section, can increase radiation tube power, and burner heats in advance, then,
Strip steel weld joint reduces annealing temperature again when being sent to bringing-up section, can ensure to pass through in the case of not reduction of speed by the above process
Annealing grade is consistent, and wooden dipper will not occur for the first flat cold-rolled sheet and the second flat cold-rolled sheet to achieve the purpose that control for control burner power
The phenomenon that bent, neither influences logical plate and stablizes, and do not influence yield.
Specifically, when the thickness difference of the thickness of the first flat cold-rolled sheet and the second flat cold-rolled sheet, if the second cold rolling is thin
The thickness of plate is more than the thickness of the first flat cold-rolled sheet, then, the strip steel weld joint between the first flat cold-rolled sheet and the second flat cold-rolled sheet
Be sent to entry loop section, and the distance between the strip steel weld joint and first furnace roller in annealing unit for first apart from when,
Annealing temperature is increased to the second annealing temperature, the temperature between the first annealing temperature and the second annealing temperature by the first annealing temperature
Degree difference is 10~15 DEG C, and the adjustment frequency of annealing temperature is 5 DEG C/min, and the calculation formula of the first distance is referring to above-mentioned formula.
It should be noted that in the present invention, when the thickness of the first flat cold-rolled sheet and the thickness of the second flat cold-rolled sheet are different
When, in adjustment of the entry loop section to annealing temperature, the position adjusted corresponding to annealing temperature is identical, and unlike the
The temperature value of two annealing temperatures when the thickness of the first flat cold-rolled sheet is more than the thickness of the second flat cold-rolled sheet, reduces annealing temperature,
When the thickness of the first flat cold-rolled sheet is less than the thickness of the second flat cold-rolled sheet, annealing temperature is improved.
Further, bringing-up section is sent to by entry loop section in strip steel weld joint, and in the strip steel weld joint and annealing unit
The distance between first furnace roller when being second distance, annealing temperature is adjusted to the first annealing temperature by the second annealing temperature
Degree, the adjustment frequency of annealing temperature are similarly 5 DEG C/min, and the calculation formula of second distance is referring to above-mentioned formula.
In embodiments of the present invention, when thickness of the thickness of the second flat cold-rolled sheet more than the first flat cold-rolled sheet, by band
Steel weld seam reduces annealing temperature when being sent to entry loop section, can reduce radiation tube power, and burner cools down in advance, then,
Strip steel weld joint improves annealing temperature when being sent to bringing-up section, can be burnt by the above process in the case where not raising speed by controlling
Mouth power is consistent to achieve the purpose that control annealing grade, and showing for wooden dipper song will not occur for the first flat cold-rolled sheet and the second flat cold-rolled sheet
As neither influencing logical plate and stablizing, and do not influence yield.
Based on same inventive concept, an alternative embodiment of the invention provides a kind of device of flat cold-rolled sheet continuous annealing,
As shown in Fig. 2, described device includes：
Thickness change determining module 201, for determining the first flat cold-rolled sheet and the second flat cold-rolled sheet sequentially annealed
Between thickness change；
First annealing temperature adjusts module 202, between first flat cold-rolled sheet and second flat cold-rolled sheet
Strip steel weld joint when being sent to the entry loop section of annealing unit, according to first flat cold-rolled sheet and second flat cold-rolled sheet
Between thickness change, annealing temperature is adjusted to the second annealing temperature by the first current annealing temperature；
Second annealing temperature adjusts module 203, for being sent to the bringing-up section of the annealing unit in the strip steel weld joint
When, the annealing temperature is adjusted to first annealing temperature by second annealing temperature.
Optionally, the first annealing temperature adjustment module 202 is specifically used for：
When the strip steel weld joint is sent to the entry loop section, and the strip steel weld joint and the in the annealing unit
The distance between piece furnace roller for first apart from when, according to the thickness between first flat cold-rolled sheet and second flat cold-rolled sheet
Degree variation, second annealing temperature is adjusted to by the annealing temperature by first annealing temperature；
Wherein, the calculation formula of first distance is：S1For described first away from
From SnFor the cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LENTRYLOOPERFor
The length of the entry loop section, first flat cold-rolled sheet and second flat cold-rolled sheet it is of same size.
Optionally, the second annealing temperature adjustment module 203 is specifically used for：
When the strip steel weld joint is sent to the bringing-up section, and the strip steel weld joint and first in the annealing unit
When the distance between furnace roller is second distance, the annealing temperature is adjusted to first annealing by second annealing temperature
Temperature；
Wherein, the calculation formula of the second distance is：S2For the second distance, SnFor
The cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LRTFFor the bringing-up section
Length, first flat cold-rolled sheet and second flat cold-rolled sheet it is of same size.
Optionally, when the thickness difference of the thickness of first flat cold-rolled sheet and second flat cold-rolled sheet, described the
Temperature difference between one annealing temperature and second annealing temperature is 10~15 DEG C.
Optionally, it further includes：
Annealing temperature keeps module, for working as the thickness of the thickness of first flat cold-rolled sheet and second flat cold-rolled sheet
When identical, during the strip steel weld joint is transmitted by the entry loop section and the bringing-up section, the annealing is kept
It is temperature-resistant.
Technical solution in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
The present invention is cold first according to the thickness change between the first flat cold-rolled sheet and the second flat cold-rolled sheet of continuous annealing
When rolling the strip steel weld joint between thin plate and the second flat cold-rolled sheet and being sent to entry loop section and bringing-up section, respectively to annealing temperature into
Row adjustment, can ensure to control annealing grade in the case of the speed of service for not changing strip, the first flat cold-rolled sheet
The phenomenon that wooden dipper is bent will not occur with the second flat cold-rolled sheet, neither influence logical plate and stablize, and do not influence yield.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then additional changes and modifications may be made to these embodiments.So appended claims be intended to be construed to include it is excellent
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
- A kind of 1. method of flat cold-rolled sheet continuous annealing, which is characterized in that including：Determine the thickness change between the first flat cold-rolled sheet and the second flat cold-rolled sheet sequentially annealed；The entrance that strip steel weld joint between first flat cold-rolled sheet and second flat cold-rolled sheet is sent to annealing unit is lived When covering section, according to the thickness change between first flat cold-rolled sheet and second flat cold-rolled sheet, by annealing temperature by current The first annealing temperature be adjusted to the second annealing temperature；When the strip steel weld joint is sent to the bringing-up section of the annealing unit, by the annealing temperature by the described second annealing temperature Degree is adjusted to first annealing temperature；Wherein, the strip steel weld joint between first flat cold-rolled sheet and second flat cold-rolled sheet is sent to annealing unit Entry loop section when, according to the thickness change between first flat cold-rolled sheet and second flat cold-rolled sheet, by annealing temperature Degree is adjusted to the second annealing temperature by the first current annealing temperature, including：When the strip steel weld joint is sent to the entry loop section, and the strip steel weld joint and first in the annealing unit The distance between furnace roller for first apart from when, according between first flat cold-rolled sheet and second flat cold-rolled sheet thickness become Change, the annealing temperature is adjusted to second annealing temperature by first annealing temperature；Wherein, the calculation formula of first distance is：S1For first distance, SnFor The cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LENTRYLOOPERFor the entrance The length of kink section, first flat cold-rolled sheet and second flat cold-rolled sheet it is of same size；Wherein, it is described the annealing unit is sent in the strip steel weld joint bringing-up section when, by the annealing temperature by described Second annealing temperature is adjusted to first annealing temperature, including：When the strip steel weld joint is sent to the bringing-up section, and the strip steel weld joint and first furnace roller in the annealing unit The distance between be second distance when, by the annealing temperature by second annealing temperature be adjusted to it is described first annealing temperature Degree；Wherein, the calculation formula of the second distance is：S2For the second distance, SnIt is described The cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LRTFFor the length of the bringing-up section, First flat cold-rolled sheet and second flat cold-rolled sheet it is of same size.
- 2. the method as described in claim 1, which is characterized in that when thickness and second cold rolling of first flat cold-rolled sheet During gauge of sheet difference, the temperature difference between first annealing temperature and second annealing temperature is 10~15 DEG C.
- 3. the method as described in claim 1, which is characterized in that further include：When the thickness of first flat cold-rolled sheet is identical with the thickness of second flat cold-rolled sheet, the strip steel weld joint is being transmitted During by the entry loop section and the bringing-up section, keep the annealing temperature constant.
- 4. a kind of device of flat cold-rolled sheet continuous annealing, which is characterized in that including：Thickness change determining module, for determining the thickness between the first flat cold-rolled sheet and the second flat cold-rolled sheet sequentially annealed Degree variation；First annealing temperature adjusts module, for the strip weldering between first flat cold-rolled sheet and second flat cold-rolled sheet When seam is sent to the entry loop section of annealing unit, according to the thickness between first flat cold-rolled sheet and second flat cold-rolled sheet Degree variation, the second annealing temperature is adjusted to by annealing temperature by the first current annealing temperature；Second annealing temperature adjusts module, during for being sent to the bringing-up section of the annealing unit in the strip steel weld joint, by institute It states annealing temperature and first annealing temperature is adjusted to by second annealing temperature；Wherein, the first annealing temperature adjustment module is specifically used for：When the strip steel weld joint is sent to the entry loop section, and the strip steel weld joint and first in the annealing unit The distance between furnace roller for first apart from when, according between first flat cold-rolled sheet and second flat cold-rolled sheet thickness become Change, the annealing temperature is adjusted to second annealing temperature by first annealing temperature；Wherein, the calculation formula of first distance is：S1For first distance, SnFor The cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LENTRYLOOPERFor the entrance The length of kink section, first flat cold-rolled sheet and second flat cold-rolled sheet it is of same size；Wherein, the second annealing temperature adjustment module is specifically used for：When the strip steel weld joint is sent to the bringing-up section, and the strip steel weld joint and first furnace roller in the annealing unit The distance between be second distance when, by the annealing temperature by second annealing temperature be adjusted to it is described first annealing temperature Degree；Wherein, the calculation formula of the second distance is：S2For the second distance, SnIt is described The cross-sectional area of first flat cold-rolled sheet, Sn+1For the cross-sectional area of second flat cold-rolled sheet, LRTFFor the length of the bringing-up section, First flat cold-rolled sheet and second flat cold-rolled sheet it is of same size.
- 5. device as claimed in claim 4, which is characterized in that when thickness and second cold rolling of first flat cold-rolled sheet During gauge of sheet difference, the temperature difference between first annealing temperature and second annealing temperature is 10~15 DEG C.
- 6. device as claimed in claim 4, which is characterized in that further include：Annealing temperature keeps module, identical with the thickness of second flat cold-rolled sheet for working as the thickness of first flat cold-rolled sheet When, during the strip steel weld joint is transmitted by the entry loop section and the bringing-up section, keep the annealing temperature It is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749702.9A CN106148652B (en) | 2016-08-29 | 2016-08-29 | Method and device for continuously annealing cold-rolled sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749702.9A CN106148652B (en) | 2016-08-29 | 2016-08-29 | Method and device for continuously annealing cold-rolled sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106148652A CN106148652A (en) | 2016-11-23 |
| CN106148652B true CN106148652B (en) | 2018-06-22 |
Family
ID=57343716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610749702.9A Active CN106148652B (en) | 2016-08-29 | 2016-08-29 | Method and device for continuously annealing cold-rolled sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106148652B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109097553B (en) * | 2018-06-28 | 2020-06-12 | 首钢京唐钢铁联合有限责任公司 | IF steel bulge defect control method |
| CN110157892B (en) * | 2019-04-10 | 2020-10-02 | 唐山钢铁集团有限责任公司 | Temperature fluctuation control method for continuous annealing of different strip steels |
| CN111020173B (en) * | 2019-11-20 | 2021-09-07 | 唐山钢铁集团高强汽车板有限公司 | Method for controlling heating output of continuous annealing furnace according to thickness specification |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5779123A (en) * | 1980-10-31 | 1982-05-18 | Kawasaki Steel Corp | Continuous annealing method for cold rolled steel strip and its device |
| US4374682A (en) * | 1979-02-02 | 1983-02-22 | Nippon Steel Corporation | Process for producing deep-drawing cold rolled steel strips by short-time continuous annealing |
| CN102560068A (en) * | 2010-12-17 | 2012-07-11 | 鞍钢股份有限公司 | Thin plate strip annealing device and method for preventing thin plate strip sample from deforming |
| CN102605269A (en) * | 2012-03-27 | 2012-07-25 | 首钢总公司 | A kind of cold-rolled thin plate and preparation method thereof |
| CN104152656A (en) * | 2014-08-12 | 2014-11-19 | 首钢京唐钢铁联合有限责任公司 | Control method for stable through plate of cold-rolled strip steel with thick and narrow specifications |
| CN104263901A (en) * | 2014-09-19 | 2015-01-07 | 北京首钢冷轧薄板有限公司 | Cold-rolled strip steel continuous annealing production system and method for refrigerated welded pipes as well as strip steel and welded pipes |
| CN105463178A (en) * | 2015-11-27 | 2016-04-06 | 首钢京唐钢铁联合有限责任公司 | Control method and device for heating power of strip steel |
| CN105779752A (en) * | 2014-12-23 | 2016-07-20 | 上海梅山钢铁股份有限公司 | Continuous annealing production method for thin cold-rolled lace-rolled hard steel plate |
-
2016
- 2016-08-29 CN CN201610749702.9A patent/CN106148652B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374682A (en) * | 1979-02-02 | 1983-02-22 | Nippon Steel Corporation | Process for producing deep-drawing cold rolled steel strips by short-time continuous annealing |
| JPS5779123A (en) * | 1980-10-31 | 1982-05-18 | Kawasaki Steel Corp | Continuous annealing method for cold rolled steel strip and its device |
| CN102560068A (en) * | 2010-12-17 | 2012-07-11 | 鞍钢股份有限公司 | Thin plate strip annealing device and method for preventing thin plate strip sample from deforming |
| CN102605269A (en) * | 2012-03-27 | 2012-07-25 | 首钢总公司 | A kind of cold-rolled thin plate and preparation method thereof |
| CN104152656A (en) * | 2014-08-12 | 2014-11-19 | 首钢京唐钢铁联合有限责任公司 | Control method for stable through plate of cold-rolled strip steel with thick and narrow specifications |
| CN104263901A (en) * | 2014-09-19 | 2015-01-07 | 北京首钢冷轧薄板有限公司 | Cold-rolled strip steel continuous annealing production system and method for refrigerated welded pipes as well as strip steel and welded pipes |
| CN105779752A (en) * | 2014-12-23 | 2016-07-20 | 上海梅山钢铁股份有限公司 | Continuous annealing production method for thin cold-rolled lace-rolled hard steel plate |
| CN105463178A (en) * | 2015-11-27 | 2016-04-06 | 首钢京唐钢铁联合有限责任公司 | Control method and device for heating power of strip steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106148652A (en) | 2016-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106148652B (en) | Method and device for continuously annealing cold-rolled sheet | |
| CN105821199B (en) | For the method to annealing in length direction steel band with different thickness | |
| CN103014500B (en) | Ultrawide SEDDQ deep-drawing automobile sheet and production method thereof | |
| CN104152656B (en) | Control method for stable through plate of cold-rolled strip steel with thick and narrow specifications | |
| CN104511484A (en) | Slight center wave strip-shape control method of hot-rolled strip steel | |
| CN110306028B (en) | Transition control method for thickness specification of strip steel in strip steel continuous cold rolling annealing process | |
| CN109112287A (en) | The continuous annealing method of steel plate | |
| EP4306665A1 (en) | Continuous annealing equipment, continuous annealing method, cold-rolled steel sheet manufacturing method, and plated steel sheet manufacturing method | |
| CN110157892B (en) | Temperature fluctuation control method for continuous annealing of different strip steels | |
| CN106282497A (en) | A kind of stable control method of vertical continuous annealing furnace gauge switching | |
| CN109772883A (en) | A kind of production method of IF steel | |
| CN108715920A (en) | A kind of control method of continuous annealing furnace heating power output mode | |
| CN108676995B (en) | Method and device for preventing deviation of strip steel in vertical annealing furnace | |
| CN110586659B (en) | Method and device for controlling asymmetric flatness of oriented silicon steel | |
| JP6402696B2 (en) | High-strength steel plate manufacturing equipment and manufacturing method | |
| CN109097553B (en) | IF steel bulge defect control method | |
| CN102784815A (en) | Classification processing method for incoming material length direction plate shape of steel plate cold straightening machine | |
| CN107405658A (en) | Rolling equipment | |
| CN113549856B (en) | Method for controlling deviation in aluminum-zinc-plated semi-hard steel furnace and temperature in zinc furnace | |
| CN107142360B (en) | A method of improving SUS410L stainless steel annealing stability | |
| JP6686983B2 (en) | Steel plate heat treatment method and heat treatment apparatus | |
| CN110434171A (en) | A kind of band tension continuous rolling method of high silicon steel | |
| CN106694637A (en) | Automatic straightening method for high-yield-strength low alloy steel | |
| TWI597367B (en) | Temperature control method for steel slab when exiting from furnace | |
| CN101892378B (en) | Heating method suitable for semi-tandem rolling and hot rolling of wide strip steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |