CN103942370B - Technology optimization method and device for improving deviation condition of strip steel in continuous annealing furnace - Google Patents
Technology optimization method and device for improving deviation condition of strip steel in continuous annealing furnace Download PDFInfo
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- CN103942370B CN103942370B CN201410134057.0A CN201410134057A CN103942370B CN 103942370 B CN103942370 B CN 103942370B CN 201410134057 A CN201410134057 A CN 201410134057A CN 103942370 B CN103942370 B CN 103942370B
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Abstract
The invention relates to a technology optimization method and device for improving the deviation condition of strip steel in a continuous annealing furnace. The method includes the steps that a strip steel defect database is established according to existing strip steel with defects; a finite element calculation model is established according to the defect database; a deviation curve database of the strip steel with defects in the continuous annealing furnace is established according to the finite element calculation model; the deviation curve database is stored in a control module of a production control system, and the control module controls a deviation correcting device to correct deviation of the strip steel with defects in the continuous annealing furnace. The device comprises a finite element model processing module, a transverse deviation curve processing module and the production control system. With the method, deviation accidents and deviation probability of the strip steel, particularly the strip steel with shape defects, in the furnace can be effectively reduced.
Description
Technical field
The present invention relates to strip steel processing technique field, more particularly to a kind of process optimization for improving sideslip in strip steel annealing furnace
Method and device.
Background technology
Strip steel continuous annealing production line took the lead in realizing commercial Application in Japan the seventies in last century, and it is clear by strip steel
Wash, anneal, smooth, surface automatic detection, oiling, multiple process treatment process such as rewinding or shearing are integrated into a complete life
Produce unit, it can make strip steel obtain soap-free emulsion polymeization, without the grains of sand press-in etc. the good heat treatment of defect and surface quality.Continuously moving back
In fiery processing procedure, strip steel is rotated by furnace roller and is quickly run up and down in the different each region of temperature, is easily produced horizontal
Displacement, scratch burner hearth phenomenon.The tension force of existing continuous annealing process, speed and furnace roller roller shape process system are meeting strip steel
On the premise of heat treatment requirements, there is horizontal deviation phenomenon in the strip steel for being easily caused deformed steel strip in stove, and then cause strip steel
Scratch burner hearth even broken belt so as to be difficult to the logical plate production of reliable and stable high speed, have a strong impact on unit Yield and quality and
Efficiency, causes serious economic loss.
The content of the invention
To solve the above problems, the invention provides one kind can effectively reduce strip steel, especially there is the strip steel of flatness defect
In the technique optimization method and device that improve sideslip in strip steel annealing furnace of sideslip accident and probability in stove.
In a kind of improvement strip steel annealing furnace that the present invention is provided, the technique optimization method of sideslip includes：
Steel defect data base is set up according to the existing strip steel containing defect；Finite element meter is set up according to the defect database
Calculate model；Sideslip diagram database of the strip steel containing defect in annealing furnace is set up according to the limited element calculation model；Will be described
To in the control module of production control system, the control module error correct device corrects continuous annealing to sideslip curve data library storage
Stove includes the sideslip of defect strip steel.
Preferably, the defect according to existing strip steel sets up steel defect data base including：
Different layers are divided in steel grade, thickness and width to the existing base steel containing imperfect tape other.
The strip steel containing defect other for same layer, according to the position of steel defect and the different subdivided difference of size
Group.
According to all layers, all strip steel containing defect of other and each layer of other different groups, set up steel defect data base.
Preferably, setting up limited element calculation model according to the defect database：
According to the feature containing defect strip steel of the defect database, using four node shell units, strip steel finite element is developed
The general limited element calculation model of node and shell unit.
Finite element meter corresponding with the defect database is set up according to all limited element calculation models containing defect strip steel
Calculate model database.
Preferably, setting up limited element calculation model according to the defect database, also include：
Furnace roller FEM (finite element) model is set up according to the feature of the transfer roller in the annealing furnace；The furnace roller FEM (finite element) model is adopted
Obtained with parsing rigid unit exploitation.
The limited element calculation model containing defect strip steel is coupled to form finite element coupling with the furnace roller FEM (finite element) model
Matched moulds type.
FEM coupling model data base is set up according to the corresponding FEM coupling model of all strip steel containing defect.
Preferably, setting up sideslip curve data of the strip steel containing defect in annealing furnace according to the limited element calculation model
Storehouse includes：
Boundary condition and initial condition are applied to the FEM coupling model.
The applying boundary condition and the FEM coupling model after initial condition are calculated, described containing can be obtained
The node of defect strip steel center is longitudinally running between x with the transversal displacement y and node in furnace roller rotary course
Functional relationship y（x）；Functional relationship y（x）Horizontal sideslip rule of the as described strip steel containing defect in continuous annealing furnace
Sideslip curve.
According to corresponding functional relationship y of all strip steel containing defect（x）Set up horizontal sideslip diagram database.
Preferably, by the control module of the sideslip curve data library storage to production control system：
The production control system includes：Testing agency, control module and deviation correcting device.
The testing agency is used for the defect characteristic for detecting the actual production strip steel in annealing furnace, and defective data is input into
Control module.
The control module identifies correspondence in the steel defect data base according to the defective data for obtaining
Specific strip steel containing defect；Corresponding specific functional relationship y is derived according to the specific strip steel containing defect（x）, from
And obtain the theoretical sideslip predicted path that the specific strip steel containing defect is entered after annealing furnace.
The control module is according to specific functional relationship y（x）Control the deviation correcting device.
Preferably, multiple deviation correcting devices are arranged in the annealing furnace specific multiple positions；
The deviation correcting device specific functional relationship y according to derived from the control module（x）Make in real time reversely
The setting of correction amount, and then the Contrary compensation specific sideslip of the strip steel containing defect in stove.
In a kind of improvement strip steel annealing furnace that the present invention is provided, the technique optimization method of sideslip is by using finite element modelling
Computational methods obtain strip steel containing defect into the theoretical sideslip predicted path in annealing furnace, and obtain various defect strip steel
Theoretical laterally sideslip diagram database, controls production control system to actual production by the horizontal sideslip diagram database for obtaining
In strip steel containing defect carry out Contrary compensation correction, effectively increase the strip steel of strip steel especially asymmetric flatness defect in continuous annealing
The probability and number of times that stably lead to plate, reduce its sideslip in the stove in stove.
In a kind of improvement strip steel annealing furnace that the present invention is provided, the device of sideslip includes：
FEM (finite element) model processing module, horizontal sideslip curve processing module and production control system.
The FEM (finite element) model processing module, for setting up and storing limited element calculation model data base and Coupled with Finite Element
Model database.
The horizontal sideslip curve processing module, for calculating and storing horizontal sideslip diagram database.
The production control system, includes the sideslip of defect strip steel for correcting annealing furnace.
Preferably, the horizontal sideslip curve processing module includes：
Horizontal sideslip curve computation unit and horizontal sideslip curve memory element.
The horizontal sideslip curve computation unit calculates corresponding horizontal according to the FEM coupling model data base
Sideslip curve simultaneously sets up horizontal sideslip diagram database.
The horizontal sideslip curve memory element is used to store the horizontal sideslip diagram database.
Preferably, the production control system includes：
Testing agency, control module and deviation correcting device；
The testing agency, it is for detecting the defect characteristic of the actual production strip steel in annealing furnace and defective data is defeated
Enter control module.
The control module, obtains defective data for reading testing agency, and identifies the horizontal sideslip curve number of correspondence
According to the horizontal sideslip curve in storehouse, and then control the deviation correcting device.
The control module identifies correspondence in the steel defect data base according to the defective data for obtaining
Specific strip steel containing defect；The spy in the horizontal sideslip diagram database of correspondence is derived according to the specific strip steel containing defect
Fixed functional relationship y（x）, so as to obtain the theoretical sideslip prediction road that the specific strip steel containing defect is entered after annealing furnace
Footpath；The control module is according to specific functional relationship y（x）Control the deviation correcting device.
The deviation correcting device is arranged in the annealing furnace specific multiple positions；The deviation correcting device is according to the control
The indication signal of module makes the setting of in real time reversely correction amount, and then the Contrary compensation specific strip steel containing defect is in stove
Interior sideslip.
In a kind of improvement strip steel annealing furnace that the present invention is provided, the device of sideslip is provided by limiting meta-model processing module,
Establish the FEM coupling model data of the various limited element calculation model data bases containing defect strip steel and strip steel and furnace roller
Storehouse, provides reference for other production divisions；By arranging horizontal sideslip curve processing module and production control system to reality
Strip steel in production has carried out the detection of defect, and recognizes that this contains the corresponding theoretical laterally sideslip curve of defect strip steel, and then refers to
Show that production control system carries out Contrary compensation correction to the strip steel containing defect, so as to ensure that strip steel is stable logical in annealing furnace
Plate, reduces the probability and number of times of its sideslip in the stove.
Description of the drawings
Fig. 1 be steel defect provided in an embodiment of the present invention for side shape wave and strip width for 1200mm Coupled with Finite Element
The grid chart of model.
Fig. 2 be steel defect provided in an embodiment of the present invention for side shape wave and strip width for 1800mm Coupled with Finite Element
The grid chart of model.
Fig. 3 is the horizontal sideslip curve chart of the corresponding strip steel of Fig. 1.
Fig. 4 is the horizontal sideslip curve chart of the corresponding strip steel of Fig. 2.
Fig. 5 be steel defect provided in an embodiment of the present invention for rib shape wave and strip width for 1200mm Coupled with Finite Element
The grid chart of model.
Fig. 6 be steel defect provided in an embodiment of the present invention for rib shape wave and strip width for 1800mm Coupled with Finite Element
The grid chart of model.
Fig. 7 is the horizontal sideslip curve chart of the corresponding strip steel of Fig. 5.
Fig. 8 is the horizontal sideslip curve chart of the corresponding strip steel of Fig. 6.
Fig. 9 be steel defect provided in an embodiment of the present invention be middle shape wave and strip width for 1200mm Coupled with Finite Element
The grid chart of model.
Figure 10 be steel defect provided in an embodiment of the present invention be middle shape wave and strip width for 1800mm finite element coupling
The grid chart of matched moulds type.
Figure 11 is the horizontal sideslip curve chart of the corresponding strip steel of Fig. 9.
Figure 12 is the horizontal sideslip curve chart of the corresponding strip steel of Figure 10.
Specific embodiment
In a kind of improvement strip steel annealing furnace provided referring to accompanying drawing 1～12, the present invention, the technique optimization method of sideslip includes：
Steel defect data base is set up according to the existing strip steel containing defect；FEM calculation mould is set up according to defect database
Type；Sideslip diagram database of the strip steel containing defect in annealing furnace is set up according to limited element calculation model；By sideslip curve data
Storehouse is stored up in the control module of production control system, and control module error correct device corrects the race that annealing furnace includes defect strip steel
Partially.
Specially：Different layers are divided in steel grade, thickness and width to existing base steel containing imperfect tape other.
For the other strip steel containing defect of same layer, according to the position of steel defect and the Bu Tong subdivided different group of size
Not.Strip steel is divided into into N1 layer not according to width, is that N2 different layer is other by thickness division；By plate shape common in production
Defect is divided into N3 different group.
According to all layers, all strip steel containing defect of other and each layer of other different groups, set up steel defect data base.
According to the feature containing defect strip steel of defect database, using four node shell units, strip steel finite element node and shell unit are developed
General limited element calculation model.Set up corresponding with defect database according to all limited element calculation models containing defect strip steel
Limited element calculation model data base.Furnace roller FEM (finite element) model is set up according to the feature of the transfer roller in annealing furnace；Furnace roller finite element
Model is obtained using parsing rigid unit exploitation.Limited element calculation model containing defect strip steel is coupled with furnace roller FEM (finite element) model
Form FEM coupling model.FEM coupling model number is set up according to the corresponding FEM coupling model of all strip steel containing defect
According to storehouse.
Wherein, setting up sideslip diagram database of the strip steel containing defect in annealing furnace according to limited element calculation model includes：
Boundary condition and initial condition are applied to FEM coupling model.Having after to applying boundary condition and initial condition
The first coupling model of limit is calculated, during the node of the center of strip steel containing defect can be obtained with furnace roller rotary course it is horizontal partially
Shifting amount y and longitudinally running functional relationship y between x of node（x）；Functional relationship y（x）As strip steel containing defect is continuously being moved back
The sideslip curve of the horizontal sideslip rule in stove.According to corresponding functional relationship y of all strip steel containing defect（x）Set up and laterally run
Inclined diagram database.
Wherein, sideslip diagram database is implanted to into production control system：Production control system includes：Testing agency, control
Molding block and deviation correcting device.Testing agency is used for the defect characteristic for detecting actual production strip steel in annealing furnace, and by number of defects
According to input control module.According to the defective data for obtaining, control module identifies that correspondence is specific in steel defect data base
Strip steel containing defect；Corresponding specific functional relationship y is derived according to specific strip steel containing defect（x）, it is specific so as to obtain
Strip steel containing defect enter annealing furnace after theoretical sideslip predicted path.Control module is according to specific functional relationship y（x）Control
Deviation correcting device.
Wherein, multiple deviation correcting devices are arranged in annealing furnace specific multiple positions；Deviation correcting device is according to the control mould
Specific functional relationship y derived from block（x）Make the setting of in real time reversely correction amount, and then Contrary compensation specifically contains defect
Sideslip of the strip steel in stove.
Preferably, strip steel containing defect is the strip steel containing flatness defect, improve the process optimization of sideslip in strip steel annealing furnace
Method has obvious rectifying effect for the strip steel of flatness defect.
With reference to specific embodiment, the present invention will be further described：
Embodiment 1
Step S1：Strip steel is carried out being divided into different layers according to specification and initial plate shape state other（N1=2, N2=1, N3=
3）：It is 1200mm that the present embodiment selects the width of strip steel, and thickness is 1.2mm, and flatness defect is that side is unrestrained, and layer is not designated as W1T1F1.
Step S2：Using four node shell units, the general FEM calculation mould of strip steel finite element node and shell unit is developed
Type；Using parsing rigid unit, exploitation furnace roller FEM (finite element) model, and then the FEM coupling model of strip steel and furnace roller is set up, this
Model is referring to accompanying drawing 1.
Step S3：With horizontal sideslip curve computation unit by arranging boundary condition and initial condition to Coupled with Finite Element
Model is calculated, and then obtains the horizontal sideslip curve of strip steel, and is stored in horizontal sideslip curve memory element, in case production
The control module of control system reads and calls.
Step S4：Before above-mentioned strip steel enters annealing furnace, the testing agency of production control system just can obtain above-mentioned strip steel
Layer not Wei W1T1F1, then control module read layer not Wei W1T1F1 strip steel information, and then recognize the horizontal of the strip steel
Sideslip curve, the curve is referring to accompanying drawing 3.
Step S5：Deviation correcting device in production control system receives the information command of control module, so as to above-mentioned band
The ad-hoc location of steel is rectified a deviation.For example, with reference to the accompanying drawings in 3 shown in curve, running deviation value of the strip steel at 30m is -6.3006mm,
Deviation correcting device at 30m is so set and can make reversely correction compensation dosage 6.3006mm, realize that the stove area to above-mentioned strip steel rectifies a deviation
Automatically control.
Embodiment 2
Step S1：Strip steel is carried out being divided into different layers according to specification and initial plate shape state other（N1=2, N2=1, N3=
3）：It is 1800mm that the present embodiment selects the width of strip steel, and thickness is 1.2mm, and flatness defect is that side is unrestrained, and layer is not designated as W2T1F1.
Step S2：Using four node shell units, the general FEM calculation mould of strip steel finite element node and shell unit is developed
Type；Using parsing rigid unit, exploitation furnace roller FEM (finite element) model, and then the FEM coupling model of strip steel and furnace roller is set up, this
Model is referring to accompanying drawing 2.
Step S3：With horizontal sideslip curve computation unit by arranging boundary condition and initial condition to Coupled with Finite Element
Model is calculated, and then obtains the horizontal sideslip curve of strip steel, and is stored in horizontal sideslip curve memory element, in case production
The control module of control system reads and calls.
Step S4：Before above-mentioned strip steel enters annealing furnace, the testing agency of production control system just can obtain above-mentioned strip steel
Layer not Wei W2T1F1, then control module read layer not Wei W2T1F1 strip steel information, and then recognize the horizontal of the strip steel
Sideslip curve, the curve is referring to accompanying drawing 4.
Step S5：Deviation correcting device in production control system receives the information command of control module, so as to above-mentioned band
The ad-hoc location of steel is rectified a deviation.For example, with reference to the accompanying drawings in 4 shown in curve, running deviation value of the strip steel at 30m is -6.1322mm,
Deviation correcting device at 30m is so set and can make reversely correction compensation dosage 6.1322mm, realize that the stove area to above-mentioned strip steel rectifies a deviation
Automatically control.
Embodiment 3
Step S1：Strip steel is carried out being divided into different layers according to specification and initial plate shape state other（N1=2, N2=1, N3=
3）：It is 1200mm that the present embodiment selects the width of strip steel, and thickness is 1.2mm, and flatness defect is that rib is unrestrained, and layer is not designated as W1T1F2.
Step S2：Using four node shell units, the general FEM calculation mould of strip steel finite element node and shell unit is developed
Type；Using parsing rigid unit, exploitation furnace roller FEM (finite element) model, and then the FEM coupling model of strip steel and furnace roller is set up, this
Model is referring to accompanying drawing 5.
Step S3：With horizontal sideslip curve computation unit by arranging boundary condition and initial condition to Coupled with Finite Element
Model is calculated, and then obtains the horizontal sideslip curve of strip steel, and is stored in horizontal sideslip curve memory element, in case production
The control module of control system reads and calls.
Step S4：Before above-mentioned strip steel enters annealing furnace, the testing agency of production control system just can obtain above-mentioned strip steel
Layer not Wei W1T1F2, then control module read layer not Wei W1T1F2 strip steel information, and then recognize the horizontal of the strip steel
Sideslip curve, the curve is referring to accompanying drawing 7.
Step S5：Deviation correcting device in production control system receives the information command of control module, so as to above-mentioned band
The ad-hoc location of steel is rectified a deviation.For example, with reference to the accompanying drawings in 7 shown in curve, running deviation value of the strip steel at 30m is -4.3785mm,
Deviation correcting device at 30m is so set and can make reversely correction compensation dosage 4.3785mm, realize that the stove area to above-mentioned strip steel rectifies a deviation
Automatically control.
Embodiment 4
Step S1：Strip steel is carried out being divided into different layers according to specification and initial plate shape state other（N1=2, N2=1, N3=
3）：It is 1800mm that the present embodiment selects the width of strip steel, and thickness is 1.2mm, and flatness defect is that rib is unrestrained, and layer is not designated as W2T1F2.
Step S2：Using four node shell units, the general FEM calculation mould of strip steel finite element node and shell unit is developed
Type；Using parsing rigid unit, exploitation furnace roller FEM (finite element) model, and then the FEM coupling model of strip steel and furnace roller is set up, this
Model is referring to accompanying drawing 6.
Step S3：With horizontal sideslip curve computation unit by arranging boundary condition and initial condition to Coupled with Finite Element
Model is calculated, and then obtains the horizontal sideslip curve of strip steel, and is stored in horizontal sideslip curve memory element, in case production
The control module of control system reads and calls.
Step S4：Before above-mentioned strip steel enters annealing furnace, the testing agency of production control system just can obtain above-mentioned strip steel
Layer not Wei W2T1F2, then control module read layer not Wei W2T1F2 strip steel information, and then recognize the horizontal of the strip steel
Sideslip curve, the curve is referring to accompanying drawing 8.
Step S5：Deviation correcting device in production control system receives the information command of control module, so as to above-mentioned band
The ad-hoc location of steel is rectified a deviation.For example, with reference to the accompanying drawings in 8 shown in curve, running deviation value of the strip steel at 30m is -1.9612mm,
Deviation correcting device at 30m is so set and can make reversely correction compensation dosage 1.9612mm, realize that the stove area to above-mentioned strip steel rectifies a deviation
Automatically control.
Embodiment 5
Step S1：Strip steel is carried out being divided into different layers according to specification and initial plate shape state other（N1=2, N2=1, N3=
3）：It is 1200mm that the present embodiment selects the width of strip steel, and thickness is 1.2mm, and flatness defect is middle wave, and layer is not designated as W1T1F3.
Step S2：Using four node shell units, the general FEM calculation mould of strip steel finite element node and shell unit is developed
Type；Using parsing rigid unit, exploitation furnace roller FEM (finite element) model, and then the FEM coupling model of strip steel and furnace roller is set up, this
Model is referring to accompanying drawing 9.
Step S3：With horizontal sideslip curve computation unit by arranging boundary condition and initial condition to Coupled with Finite Element
Model is calculated, and then obtains the horizontal sideslip curve of strip steel, and is stored in horizontal sideslip curve memory element, in case production
The control module of control system reads and calls.
Step S4：Before above-mentioned strip steel enters annealing furnace, the testing agency of production control system just can obtain above-mentioned strip steel
Layer not Wei W1T1F3, then control module read layer not Wei W1T1F3 strip steel information, and then recognize the horizontal of the strip steel
Sideslip curve, the curve is referring to accompanying drawing 11.
Step S5：Deviation correcting device in production control system receives the information command of control module, so as to above-mentioned band
The ad-hoc location of steel is rectified a deviation.For example, with reference to the accompanying drawings in 11 shown in curve, running deviation value of the strip steel at 30m is 0mm, then
Deviation correcting device at 30m is set and can make reversely correction compensation dosage 0mm, realize automatically controlling the stove area correction of above-mentioned strip steel.
Embodiment 6
Step S1：Strip steel is carried out being divided into different layers according to specification and initial plate shape state other（N1=2, N2=1, N3=
3）：It is 1800mm that the present embodiment selects the width of strip steel, and thickness is 1.2mm, and flatness defect is middle wave, and layer is not designated as W2T1F3.
Step S2：Using four node shell units, the general FEM calculation mould of strip steel finite element node and shell unit is developed
Type；Using parsing rigid unit, exploitation furnace roller FEM (finite element) model, and then the FEM coupling model of strip steel and furnace roller is set up, this
Model is referring to accompanying drawing 10.
Step S3：With horizontal sideslip curve computation unit by arranging boundary condition and initial condition to Coupled with Finite Element
Model is calculated, and then obtains the horizontal sideslip curve of strip steel, and is stored in horizontal sideslip curve memory element, in case production
The control module of control system reads and calls.
Step S4：Before above-mentioned strip steel enters annealing furnace, the testing agency of production control system just can obtain above-mentioned strip steel
Layer not Wei W2T1F3, then control module read layer not Wei W2T1F3 strip steel information, and then recognize the horizontal of the strip steel
Sideslip curve, the curve is referring to accompanying drawing 12.
Step S5：Deviation correcting device in production control system receives the information command of control module, so as to above-mentioned band
The ad-hoc location of steel is rectified a deviation.For example, with reference to the accompanying drawings in 12 shown in curve, running deviation value of the strip steel at 30m is 0mm, then
Deviation correcting device at 30m is set and can make reversely correction compensation dosage 0mm, realize automatically controlling the stove area correction of above-mentioned strip steel.
The process optimization of sideslip in a kind of improvement strip steel annealing furnace of present invention offer can be seen that by embodiment 1～6
Method and device can realize that correction of the strip steel containing defect in stove area is automatically controlled well.
In a kind of improvement strip steel annealing furnace that the present invention is provided, the technique optimization method of sideslip is by using finite element modelling
Computational methods obtain strip steel containing defect into the theoretical sideslip predicted path in annealing furnace, and obtain various defect strip steel
Theoretical laterally sideslip diagram database, controls production control system to actual production by the horizontal sideslip diagram database for obtaining
In strip steel containing defect carry out Contrary compensation correction, effectively increase the strip steel of strip steel especially asymmetric flatness defect in continuous annealing
The probability and number of times that stably lead to plate, reduce its sideslip in the stove in stove.
In a kind of improvement strip steel annealing furnace that the present invention is provided, the device of sideslip includes：
FEM (finite element) model processing module, horizontal sideslip curve processing module and production control system.
The FEM (finite element) model processing module, for setting up and storing limited element calculation model data base and Coupled with Finite Element
Model database.
The horizontal sideslip curve processing module, for calculating and storing horizontal sideslip diagram database.
The production control system, includes the sideslip of defect strip steel for correcting annealing furnace.
Preferably, the horizontal sideslip curve processing module includes：
Horizontal sideslip curve computation unit and horizontal sideslip curve memory element.
The horizontal sideslip curve computation unit calculates corresponding horizontal according to the FEM coupling model data base
Sideslip curve simultaneously sets up horizontal sideslip diagram database.
The horizontal sideslip curve memory element is used to store the horizontal sideslip diagram database.
Preferably, the production control system includes：
Testing agency, control module and deviation correcting device；
The testing agency, it is for detecting the defect characteristic of the actual production strip steel in annealing furnace and defective data is defeated
Enter control module.
The control module, obtains defective data for reading testing agency, and identifies the horizontal sideslip curve number of correspondence
According to the horizontal sideslip curve in storehouse, and then control the deviation correcting device.
The control module identifies correspondence in the described steel defect data according to the defective data for obtaining
Specific strip steel containing defect in storehouse；Derived in the horizontal sideslip diagram database of correspondence according to the specific strip steel containing defect
Specific functional relationship y（x）, it is pre- into the theoretical sideslip after annealing furnace so as to obtain the specific strip steel containing defect
Survey path；The control module is according to specific functional relationship y（x）Control the deviation correcting device.
The deviation correcting device is arranged in the annealing furnace specific multiple positions；The deviation correcting device is according to the control
The indication signal of module makes the setting of in real time reversely correction amount, and then the Contrary compensation specific strip steel containing defect is in stove
Interior sideslip.
In a kind of improvement strip steel annealing furnace that the present invention is provided, the device of sideslip is provided by limiting meta-model processing module,
Establish the FEM coupling model data of the various limited element calculation model data bases containing defect strip steel and strip steel and furnace roller
Storehouse, provides reference for other production divisions；By arranging horizontal sideslip curve processing module and production control system to reality
Strip steel in production has carried out the detection of defect, and recognizes that this contains the corresponding theoretical laterally sideslip curve of defect strip steel, and then refers to
Show that production control system carries out Contrary compensation correction to the strip steel containing defect, so as to ensure that strip steel is stable logical in annealing furnace
Plate, reduces the probability and number of times of its sideslip in the stove.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, the be should be understood that specific embodiment that the foregoing is only the present invention is not limited to this
Bright, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. should be included in the present invention
Protection domain within.
Claims (8)
1. a kind of technique optimization method for improving sideslip in strip steel annealing furnace, it is characterised in that include：
Steel defect data base is set up according to the existing strip steel containing defect；FEM calculation mould is set up according to the defect database
Type；Sideslip diagram database of the strip steel containing defect in annealing furnace is set up according to the limited element calculation model, specially：To institute
State FEM coupling model and apply boundary condition and initial condition；Apply boundary condition and the finite element after initial condition to described
Coupling model is calculated, and obtains the node of the center of strip steel containing defect with the transversal displacement in furnace roller rotary course
Y and longitudinally running functional relationship y (x) between x of node；Functional relationship y (x) is the strip steel containing defect even
The sideslip curve of the horizontal sideslip rule in continuous annealing furnace；Set up horizontal according to corresponding functional relationship y (x) of all strip steel containing defect
To sideslip diagram database；By the control module of the sideslip curve data library storage to production control system, the control mould
Block error correct device corrects the sideslip that annealing furnace includes defect strip steel.
2. technique optimization method according to claim 1, it is characterised in that the defect according to existing strip steel sets up band
Steel defect database includes：
Different layers are divided in steel grade, thickness and width to the existing base steel containing imperfect tape other；
The strip steel containing defect other for same layer, according to the position of steel defect and the Bu Tong subdivided different group of size
Not；
According to all layers, all strip steel containing defect of other and each layer of other different groups, set up steel defect data base.
3. technique optimization method according to claim 1, it is characterised in that finite element is set up according to the defect database
Computation model：
According to the feature containing defect strip steel of the defect database, using four node shell units, strip steel finite element node is developed
The limited element calculation model general with shell unit；
FEM calculation mould corresponding with the defect database is set up according to all limited element calculation models containing defect strip steel
Type data base.
4. technique optimization method according to claim 3, it is characterised in that finite element is set up according to the defect database
Computation model, also includes：
Furnace roller FEM (finite element) model is set up according to the feature of the transfer roller in annealing furnace；The furnace roller FEM (finite element) model is firm using parsing
Body unit exploitation is obtained；
The limited element calculation model containing defect strip steel is coupled to form finite element coupled mode with the furnace roller FEM (finite element) model
Type；
FEM coupling model data base is set up according to the corresponding FEM coupling model of all strip steel containing defect.
5. technique optimization method according to claim 1, it is characterised in that by the sideslip curve data library storage to life
Produce the control module of control system：
The production control system includes：Testing agency, control module and deviation correcting device；
The testing agency is used for the defect characteristic for detecting the actual production strip steel in annealing furnace, and defective data input is controlled
Module；
According to the defective data for obtaining, the control module identifies that correspondence is specific in the steel defect data base
Strip steel containing defect；Corresponding specific functional relationship y (x) is derived according to the specific strip steel containing defect, so as to obtain
Obtained the theoretical sideslip predicted path that the specific strip steel containing defect is entered after annealing furnace；
The control module controls the deviation correcting device according to specific functional relationship y (x).
6. technique optimization method according to claim 5, it is characterised in that：
Multiple deviation correcting devices are arranged in the annealing furnace specific multiple positions；
The deviation correcting device specific functional relationship y (x) according to derived from the control module is made and reversely being rectified a deviation in real time
The setting of amount, and then the Contrary compensation specific sideslip of the strip steel containing defect in stove.
7. a kind of device for improving sideslip in strip steel annealing furnace, it is characterised in that include：
FEM (finite element) model processing module, horizontal sideslip curve processing module and production control system；
The FEM (finite element) model processing module, for setting up and storing limited element calculation model data base and FEM coupling model
Data base；
The horizontal sideslip curve processing module, for calculating and storing horizontal sideslip diagram database；
The production control system, includes the sideslip of defect strip steel for correcting annealing furnace；The production control system includes：Inspection
Survey mechanism, control module and deviation correcting device；The testing agency, the defect for detecting the actual production strip steel in annealing furnace are special
Levy, and by defective data input control module；
The control module, obtains defective data for reading testing agency, and identifies the horizontal sideslip diagram database of correspondence
Interior horizontal sideslip curve, and then control the deviation correcting device；
According to the defective data for obtaining, the control module identifies that correspondence is specific in the steel defect data base
Strip steel containing defect；Derived according to the specific strip steel containing defect described specific in the horizontal sideslip diagram database of correspondence
Functional relationship y (x), so as to obtain the theoretical sideslip predicted path that the specific strip steel containing defect is entered after annealing furnace；Institute
State control module and the deviation correcting device is controlled according to specific functional relationship y (x)；
The deviation correcting device is arranged in the annealing furnace specific multiple positions；The deviation correcting device is according to the control module
Indication signal make the setting of in real time reversely correction amount, and then the Contrary compensation specific strip steel containing defect is in stove
Sideslip.
8. the device for improving sideslip in strip steel annealing furnace according to claim 7, it is characterised in that the horizontal sideslip is bent
Line processing module includes：
Horizontal sideslip curve computation unit and horizontal sideslip curve memory element；
The horizontal sideslip curve computation unit calculates corresponding horizontal sideslip according to the FEM coupling model data base
Curve simultaneously sets up horizontal sideslip diagram database；
The horizontal sideslip curve memory element is used to store the horizontal sideslip diagram database.
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| CN103605842A (en) * | 2013-11-12 | 2014-02-26 | 燕山大学 | Design method of annealing unit furnace section furnace roll shape |
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| Buckling and wrinkling during strip conveying in processing;N.Jacques等;《Journal of Materials Processing Technology》;20071231;第33-40页 * |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |