CN114918261A - Method and device for setting convexity of intermediate blank and computer equipment - Google Patents
Method and device for setting convexity of intermediate blank and computer equipment Download PDFInfo
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- CN114918261A CN114918261A CN202210429840.4A CN202210429840A CN114918261A CN 114918261 A CN114918261 A CN 114918261A CN 202210429840 A CN202210429840 A CN 202210429840A CN 114918261 A CN114918261 A CN 114918261A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The embodiment of the application provides a method for setting the convexity of an intermediate blank, which comprises the following steps: aiming at the endless rolling process of a preset steel grade, acquiring actual intermediate blank parameters, actual finished product parameters and target finished product parameters corresponding to each finished product thickness interval of the preset steel grade; calculating the convexity set value of the intermediate blank corresponding to each thickness interval of the finished product through an intermediate blank convexity set model according to the actual intermediate blank parameter, the actual finished product parameter and the target finished product parameter corresponding to each thickness interval of the finished product; and determining the convexity setting range of the intermediate blank corresponding to each thickness interval of the finished product according to the target finished product parameters and the convexity setting value of the intermediate blank corresponding to each thickness interval of the finished product. The technical method provided by the application can reasonably set the convexity of the intermediate billet to a certain extent, so that the roll bending/shifting configuration of the finish rolling stand can be reasonably distributed, and finally the shape of a finished product can be optimized.
Description
Technical Field
The application relates to a rolling technology of endless rolled strip steel, in particular to a method and a device for setting convexity of an intermediate billet and computer equipment.
Background
In the existing endless rolling process, because the target convexity of the intermediate blank of all the steel types and the specification of the strip steel at present is set to be a fixed percentage of the thickness of the intermediate blank, the setting method causes the target convexity of the intermediate blank to have great deviation from the actual convexity of the intermediate blank of most steel types, directly influences the actual bending/roll shifting configuration of a finish rolling rack and is very unfavorable for the shape of a finished product.
Therefore, a method for setting the crown of the intermediate billet is urgently needed by the technical personnel in the field to reasonably set the crown of the intermediate billet.
Disclosure of Invention
The embodiment of the application provides a method and a device for setting the convexity of an intermediate billet and computer equipment, so that the convexity of the intermediate billet can be reasonably set at least to a certain extent, the roll bending/shifting configuration of a finish rolling machine frame can be reasonably distributed, and the shape of a finished product can be optimized finally.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to one aspect of the application, a method for setting the convexity of an intermediate blank is provided, which comprises the following steps: aiming at the endless rolling process of a preset steel grade, acquiring actual intermediate blank parameters, actual finished product parameters and target finished product parameters corresponding to each finished product thickness interval of the preset steel grade; calculating the intermediate blank convexity set value corresponding to each finished product thickness interval through an intermediate blank convexity setting model according to the actual intermediate blank parameter, the actual finished product parameter and the target finished product parameter corresponding to each finished product thickness interval; and determining the convexity setting range of the intermediate blank corresponding to each finished product thickness interval according to the target finished product parameters and the convexity setting value of the intermediate blank corresponding to each finished product thickness interval.
In some embodiments of the present application, the actual intermediate billet parameters include: actual intermediate billet crown and actual intermediate billet thickness; the actual finished product parameters include: the actual finished product convexity and the actual finished product thickness; the target finished product parameters comprise a target finished product convexity control range.
In some embodiments of the present application, the intermediate blank convexity setting model is:
CH bar ＝f(C act ,h act ,CH act ,H act ,C trg ,C cb ,C we )
wherein, CH bar Is a set value of the crown of the intermediate blank, C act For the actual finished product convexity, h act Is the actual finished product thickness, CH act To the actual intermediate blank convexity, H act For said actual intermediate thickness, C trg For the optimum control value of the crown of the target finished product, C cb Target product crown control lower limit, C we And controlling the upper limit value of the convexity of the target finished product.
In some embodiments of the present application, before obtaining the actual intermediate blank parameters, the actual finished product parameters, and the target finished product parameters corresponding to each finished product thickness interval of the preset steel grade, the method further includes: acquiring the corresponding relation between the rolling block number and the thickness of the strip steel in the endless rolling process of the preset steel grade; and determining at least one finished product thickness interval according to the corresponding relation between the rolling block number and the strip steel thickness.
In some embodiments of the present application, calculating an intermediate blank convexity setting value corresponding to each finished product thickness interval through an intermediate blank convexity setting model according to an actual intermediate blank parameter, an actual finished product parameter, and a target finished product parameter corresponding to each finished product thickness interval includes: and calculating the intermediate billet convexity set value corresponding to each finished product thickness interval through an intermediate billet convexity setting model according to the corresponding actual intermediate billet parameter, actual finished product parameter and target finished product parameter and the finished product convexity control criterion and the wave shape control criterion of the preset steel grade aiming at each finished product thickness interval.
In some embodiments of the present application, determining the intermediate blank convexity setting range corresponding to each finished product thickness interval according to the target finished product parameter and the intermediate blank convexity setting value corresponding to each finished product thickness interval includes: correspondingly determining a convexity correction value according to a corresponding target finished product convexity control range and a middle blank convexity setting value, a finished product convexity control criterion and a wave shape control criterion, wherein the convexity correction value is used for correspondingly correcting the middle blank convexity setting value; and determining the corresponding convexity setting range of the intermediate billet according to the corresponding convexity correction value and the corresponding convexity setting value of the intermediate billet.
In some embodiments of the present application, determining the corresponding intermediate billet crown setting range based on the corresponding crown correction value and the corresponding intermediate billet crown setting value comprises: calculating the sum of the corresponding intermediate billet convexity set value and the corresponding convexity correction value as the upper limit of the corresponding intermediate billet convexity set range; and calculating the difference value between the corresponding set value of the convexity of the intermediate billet and the corresponding corrected value of the convexity, and taking the difference value as the lower limit of the convexity setting range of the corresponding intermediate billet.
In some embodiments of the present application, the method further comprises: and recording the convexity setting range of the intermediate billet corresponding to each finished product thickness interval of the preset steel grade, and storing the convexity setting range data in a database, wherein the convexity setting range data of the intermediate billet of at least one preset steel grade is stored in the database.
According to an aspect of the present application, there is provided an intermediate blank crown setting apparatus including: the device comprises an acquisition unit, a processing unit and a control unit, wherein the acquisition unit is used for acquiring actual intermediate billet parameters, actual finished product parameters and target finished product parameters corresponding to each finished product thickness interval of a preset steel grade aiming at the endless rolling process of the preset steel grade; the calculating unit is used for calculating the convexity set value of the intermediate blank corresponding to each finished product thickness interval through the convexity set model of the intermediate blank according to the actual intermediate blank parameter, the actual finished product parameter and the target finished product parameter corresponding to each finished product thickness interval; and the determining unit is used for determining the convexity setting range of the intermediate blank corresponding to each finished product thickness interval according to the target finished product parameters and the convexity setting value of the intermediate blank corresponding to each finished product thickness interval.
According to an aspect of the present application, there is provided a computer device, characterized in that the computer device comprises one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by the setting method of the intermediate blank crown as described.
Based on the scheme, the application has at least the following advantages or progress effects:
the application provides a setting method of middle base convexity, set up the model through middle base convexity and calculate middle base convexity, obtain middle base convexity settlement scope according to the calculated result again, the convexity settlement scope of middle base convexity that obtains can be used for setting for the convexity of belted steel middle base among the endless rolling process, rather than all setting up middle base target convexity into the fixed percentage of middle base thickness, can avoid leading to middle base target convexity and the actual middle base convexity of most steel types and appear great deviation, thereby can rationally set up the roll bending/scurrying setting of finish rolling frame, optimize the plate shape of final finished product.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a simplified flow chart of a method for setting crown of an intermediate billet according to an embodiment of the present application;
FIG. 2 is a simplified flowchart of a method for setting crown of an intermediate billet according to an embodiment of the present application;
FIG. 3 is a simplified flowchart illustrating a method of setting crown of an intermediate billet according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating the correspondence between the number of rolling blocks and the thickness of the strip steel in the endless rolling process for the predetermined steel grade according to one embodiment of the present application;
FIG. 5 shows a simplified schematic diagram of an intermediate billet crown setting device in an embodiment of the present application;
FIG. 6 illustrates a schematic diagram of a computer system suitable for use to implement embodiments of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. the functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or micro-setter means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
Next, method embodiments of the present application will be described in detail with reference to the drawings.
Referring to fig. 1, fig. 1 is a simplified flowchart illustrating a method for setting a crown of an intermediate blank according to an embodiment of the present application, where the method may include steps S101 to S103:
step S101, aiming at the endless rolling process of the preset steel grade, acquiring actual intermediate billet parameters, actual finished product parameters and target finished product parameters corresponding to each finished product thickness interval of the preset steel grade.
And S102, calculating the convexity set value of the intermediate blank corresponding to each finished product thickness interval through an intermediate blank convexity set model according to the actual intermediate blank parameter, the actual finished product parameter and the target finished product parameter corresponding to each finished product thickness interval.
And step S103, determining the convexity setting range of the intermediate blank corresponding to each finished product thickness interval according to the target finished product parameters and the convexity setting value of the intermediate blank corresponding to each finished product thickness interval.
In the application, a specific method for setting the convexity of the intermediate blank is developed for each thickness interval of the strip steel in endless rolling, the convexity set value of the intermediate blank corresponding to each thickness interval of the finished product can be calculated according to the convexity set model of the intermediate blank, the actual parameters of the finished product and the target parameters of the finished product corresponding to each thickness interval of the finished product, the convexity set range of the intermediate blank corresponding to each thickness interval of the finished product is further determined, and the convexity of the intermediate blank can be reasonably set.
In an embodiment of the present application, the actual intermediate blank parameters may include: actual intermediate billet convexity and actual intermediate billet thickness; the actual product parameters may include: the actual finished product convexity and the actual finished product thickness; the target finished product parameter may include a target finished product crown control range.
In this embodiment, the crown setting model of the intermediate billet may be:
CH bar ＝f(C act ,h act ,CH act ,H act ,C trg ,C cb ,C we )
wherein, CH bar Is a set value of the convexity of the intermediate billet, C act For the actual finished product convexity, h act Is the actual finished thickness, CH act To the actual intermediate slab crown, H act Is the actual intermediate blank thickness, C trg For the optimum control value of the crown of the target finished product, C cb Target product crown control lower limit, C we And controlling the upper limit value of the convexity of the target finished product.
Referring to fig. 2, fig. 2 is a simplified flowchart illustrating a method for setting a crown of an intermediate billet according to an embodiment of the present application, where before obtaining actual intermediate billet parameters, actual finished product parameters, and target finished product parameters corresponding to each finished product thickness interval of the preset steel grade, the method further includes steps S201 to S202:
step S201, obtaining the corresponding relation between the rolling block number and the thickness of the strip steel in the endless rolling process of the preset steel grade.
And S202, determining at least one finished product thickness interval according to the corresponding relation between the rolling block number and the strip steel thickness.
In the application, aiming at the endless rolling process, the strip steel with different thickness intervals can be rolled in one endless rolling process, and the number of rolling blocks and the thickness of the strip steel have corresponding relation in the endless rolling process. And the actual intermediate blank parameters, the actual finished product parameters and the target finished product parameters corresponding to different finished product thicknesses are different, so in order to set the convexity of the intermediate blank produced by the endless rolling in a targeted manner, at least one finished product thickness interval can be determined according to the corresponding relation between the number of rolled blocks and the thickness of the strip steel in the endless rolling process, and then the convexity of the intermediate blank is correspondingly set according to the finished product thickness interval.
In an embodiment of the present application, the method for calculating the intermediate blank crown setting value corresponding to each finished product thickness interval through the intermediate blank crown setting model according to the actual intermediate blank parameter, the actual finished product parameter, and the target finished product parameter corresponding to each finished product thickness interval may include: and calculating the convexity set value of the intermediate billet corresponding to each finished product thickness interval through an intermediate billet convexity setting model according to the corresponding actual intermediate billet parameter, actual finished product parameter and target finished product parameter and the finished product convexity control criterion and the wave shape control criterion of the preset steel grade aiming at each finished product thickness interval.
Referring to fig. 3, fig. 3 is a simplified flowchart illustrating a method for setting a crown of an intermediate blank according to an embodiment of the present application, where the method for determining a setting range of a crown of an intermediate blank corresponding to each product thickness interval according to a target product parameter and a setting value of a crown of an intermediate blank corresponding to each product thickness interval may include steps S301 to S302:
step S301, aiming at each finished product thickness interval, correspondingly determining a convexity correction value according to a corresponding target finished product convexity control range and a middle blank convexity set value, and according to a finished product convexity control criterion and a wave shape control criterion, wherein the convexity correction value is used for correspondingly correcting the middle blank convexity set value.
And step S302, determining a corresponding intermediate billet convexity setting range according to the corresponding convexity correction value and the corresponding intermediate billet convexity setting value.
In this embodiment, the determining the corresponding setting range of the crown of the intermediate blank according to the corresponding correction value of the crown and the corresponding setting value of the crown of the intermediate blank may include:
calculating the sum of the corresponding intermediate billet convexity set value and the corresponding convexity correction value as the upper limit of the corresponding intermediate billet convexity set range; and calculating the difference value between the corresponding set value of the convexity of the intermediate billet and the corresponding corrected value of the convexity to be used as the lower limit of the convexity setting range of the corresponding intermediate billet.
In the application, in order to improve the flexibility of the setting method, the crown setting value of the intermediate billet can be corrected according to the finished product crown control criterion and the wave shape control criterion, so that the crown control range of the intermediate billet is obtained. According to the crown control range of the intermediate billet, a person skilled in the art can judge whether the actual crown of the intermediate billet in the subsequent endless rolling process is reasonable. If the actual crown of the intermediate billet is within the crown control range of the intermediate billet, the current actual crown of the intermediate billet can be determined to be relatively reasonable; and if the actual crown of the intermediate billet is out of the crown control range of the intermediate billet, determining that the current actual crown of the intermediate billet is unreasonable and the crown set value of the intermediate billet in the endless rolling process needs to be adjusted in time.
In one embodiment of the present application, the method may further include: and recording the convexity setting range of the intermediate billet corresponding to each finished product thickness interval of the preset steel grade, and storing the convexity setting range data in a database, wherein the convexity setting range data of the intermediate billet of at least one preset steel grade is stored in the database.
In the application, the convexity setting ranges of the intermediate billets of different steel types in different thickness sections can be stored through the database, and the corresponding convexity setting ranges of the intermediate billets can be read from the database during endless rolling of a certain steel type. The method can realize accurate setting of steel grade and thickness division intervals aiming at the convexity setting of the intermediate billet under the endless rolling process.
In order to make the present application more understandable to those skilled in the art, the technical solutions provided in the present application will be described below with reference to a complete embodiment.
Taking a three-stand rough rolling and five-stand finish rolling continuous mill unit of a certain endless rolling production line as an example, the method for setting the crown of the intermediate billet provided by the application is adopted.
The specific embodiment is as follows:
referring to fig. 4, fig. 4 is a schematic diagram illustrating the correspondence between the number of rolling blocks and the thickness of the strip steel in the endless rolling process for the predetermined steel grade according to an embodiment of the present application.
Selecting a certain pickled plate steel type SMAB subjected to endless rolling, wherein the thickness specification is in a range of 1.17-3.5mm, and the corresponding relation between the number of rolled blocks of the steel type and the thickness of the strip steel in the endless rolling process is firstly thinning and then thickening. As shown in FIG. 4, 401 shows that the target finished product thickness of the 1 st strip is 3.5mm, 402 shows that the target finished product thickness of the 25 th strip is 1.2mm, 403 shows that the target finished product thickness of the 68 th strip is 1.9mm, and the drawing speed can be stabilized at 5.1m/min during the rolling process.
Dividing 1.17-3.5mm into 10 thickness intervals, and respectively carrying out optimization calculation on the convexity set values of the intermediate billets under different thickness layers through the convexity set model of the intermediate billets based on the target convexity control criterion and the wave-shaped criterion of the finished products of the steel grade, wherein the calculation results can be shown in table 1:
| serial number | Interval of thickness | Set value of convexity of intermediate billet | Serial number | Interval of thickness | Set value of convexity of intermediate billet |
| 1 | [1,1.15) | 130 | 6 | [1.9,2.2) | 170 |
| 2 | [1.15,1.3) | 135 | 7 | [2.2,2.5) | 195 |
| 3 | [1.3,1.5) | 140 | 8 | [2.5,2.9) | 210 |
| 4 | [1.5,1.7) | 145 | 9 | [2.9,3.4) | 225 |
| 5 | [1.7,1.9) | 160 | 10 | [3.4,4.0) | 240 |
TABLE 1
According to the determined crown setting value of the intermediate billet and according to the finished crown control range and standard, further determining a corresponding determined crown correction value, wherein the crown correction value is used for correspondingly correcting the crown setting value of the intermediate billet, and the result can be shown in table 2:
table 2 in summary, the control range of the intermediate blank corresponding to a certain final pickled steel plate type SMAB can be shown in table 3:
| serial number | Interval of thickness | Crown control range of intermediate billet |
| 1 | [1,1.15) | 130±50 |
| 2 | [1.15,1.2) | 135±50 |
| 3 | [1.2,1.5) | 140±55 |
| 4 | [1.5,1.7) | 145±55 |
| 5 | [1.7,1.9) | 160±55 |
| 6 | [1.9,2.0) | 170±55 |
| 7 | [2.0,2.2) | 170±60 |
| 8 | [2.2,2.5) | 195±60 |
| 9 | [2.5,2.9) | 210±65 |
| 10 | [2.9,3.4) | 225±65 |
| 11 | [3.4,3.5] | 240±65 |
| 12 | (3.5,4.0) | 240±70 |
TABLE 3
The convexity of the intermediate blank in the continuous rolling process can be reasonably set through field practical application. Whether the convexity setting of the intermediate billet is reasonable or not has great influence on the bending/roll shifting configuration of each stand, the proportion convexity distribution among the stands and the control precision of the convexity of a finished product, the convexity of the intermediate billet is the same as the convexity control of the finished product, closed-loop control setting is formed, and important basis is provided for realizing the final rolling target of the product and guaranteeing a plate shape control instruction.
Next, an apparatus embodiment of the present application will be described with reference to the drawings.
Referring to fig. 5, fig. 5 is a schematic view of an apparatus for setting the crown of an intermediate billet according to an embodiment of the present application, the apparatus 500 comprising: an acquisition unit 501, a calculation unit 502, and a determination unit 503.
The apparatus 500 may be specifically configured as follows: an obtaining unit 501, configured to obtain, for a headless rolling process of a preset steel grade, an actual intermediate billet parameter, an actual finished product parameter, and a target finished product parameter corresponding to each finished product thickness interval of the preset steel grade; a calculating unit 502, configured to calculate, according to the actual intermediate blank parameters, the actual finished product parameters, and the target finished product parameters corresponding to each finished product thickness interval, an intermediate blank convexity setting value corresponding to each finished product thickness interval through an intermediate blank convexity setting model; the determining unit 503 is configured to determine the intermediate blank convexity setting range corresponding to each product thickness interval according to the target product parameter and the intermediate blank convexity setting value corresponding to each product thickness interval.
Referring to FIG. 6, FIG. 6 is a diagram illustrating a computer system suitable for implementing embodiments of the present application.
It should be noted that the computer system 600 shown in fig. 6 is only an example, and should not bring any limitation to the function and the scope of the application of the embodiments.
As shown in fig. 6, the computer system 600 includes a Central Processing Unit (CPU)601, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, according to a program stored in a Read-Only Memory (ROM) 602 or a program loaded from a storage portion 608 into a Random Access Memory (RAM) 603. In the RAM 603, various programs and data necessary for system operation are also stored. The CPU 601, ROM 602, and RAM 603 are connected to each other via a bus 604. An Input/Output (I/O) interface 605 is also connected to bus 604.
The following components are connected to the I/O interface 605: an input portion 606 including a keyboard, a mouse, and the like; an output section 607 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, a speaker, and the like; a storage section 608 including a hard disk and the like; and a communication section 609 including a Network interface card such as a LAN (Local Area Network) card, a modem, or the like. The communication section 609 performs communication processing via a network such as the internet. The driver 610 is also connected to the I/O interface 605 as needed. A removable medium 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 610 as necessary, so that a computer program read out therefrom is mounted into the storage section 608 as necessary.
In particular, according to embodiments of the application, the processes described above with reference to the flow diagrams may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 609, and/or installed from the removable medium 611. When the computer program is executed by a Central Processing Unit (CPU)601, various functions defined in the system of the present application are executed.
It should be noted that the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), a flash Memory, an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present application may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.
As another aspect, the present application also provides a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and executes the computer instructions, so that the computer device executes the setting method of the intermediate blank convexity in the above embodiment.
As another aspect, the present application also provides a computer-readable medium, which may be contained in the electronic device described in the above embodiments; or may exist separately without being assembled into the electronic device. The computer-readable medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to implement the method for setting the crown of the intermediate blank described in the above embodiments.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, and may also be implemented by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method for setting the convexity of an intermediate blank, the method comprising:
aiming at the endless rolling process of a preset steel grade, acquiring actual intermediate blank parameters, actual finished product parameters and target finished product parameters corresponding to each finished product thickness interval of the preset steel grade;
calculating the intermediate blank convexity set value corresponding to each finished product thickness interval through an intermediate blank convexity setting model according to the actual intermediate blank parameter, the actual finished product parameter and the target finished product parameter corresponding to each finished product thickness interval;
and determining the convexity setting range of the intermediate blank corresponding to each finished product thickness interval according to the target finished product parameters and the convexity setting value of the intermediate blank corresponding to each finished product thickness interval.
2. The method of claim 1, wherein the actual intermediate billet parameters comprise: actual intermediate billet crown and actual intermediate billet thickness; the actual finished product parameters include: the actual finished product convexity and the actual finished product thickness; the target finished product parameters comprise a target finished product convexity control range.
3. The method of claim 2, wherein the intermediate billet crown setting model is:
CH bar ＝f(C act ,h act ,CH act ,H act ,C trg ,C cb ,C we )
wherein, CH bar Is a set value of the crown of the intermediate blank, C act For the actual finished product convexity, h act Is the actual finished thickness, CH act To the actual intermediate slab crown, H act Is composed ofThe actual thickness of the intermediate blank, C trg For the optimum control value of the crown of the target finished product, C cb Target product crown control lower limit value, C we And controlling the upper limit value of the convexity of the target finished product.
4. The method according to claim 1, wherein before obtaining actual intermediate blank parameters, actual finished product parameters, and target finished product parameters corresponding to each finished product thickness interval of the preset steel grade, the method further comprises:
acquiring the corresponding relation between the rolling block number and the thickness of the strip steel in the endless rolling process of the preset steel grade;
and determining at least one finished product thickness interval according to the corresponding relation between the rolling block number and the strip steel thickness.
5. The method of claim 2, wherein calculating the intermediate billet crown setting value corresponding to each finished product thickness interval through an intermediate billet crown setting model according to the actual intermediate billet parameter, the actual finished product parameter, and the target finished product parameter corresponding to each finished product thickness interval comprises:
and calculating the intermediate billet convexity set value corresponding to each finished product thickness interval through an intermediate billet convexity setting model according to the corresponding actual intermediate billet parameter, actual finished product parameter and target finished product parameter and the finished product convexity control criterion and the wave shape control criterion of the preset steel grade aiming at each finished product thickness interval.
6. The method of claim 2, wherein determining the intermediate billet crown setting range for each finished product thickness interval based on the target finished product parameters and the intermediate billet crown setting values for each finished product thickness interval comprises:
correspondingly determining a convexity correction value according to a corresponding target finished product convexity control range and a middle blank convexity set value and according to a finished product convexity control criterion and a wave shape control criterion aiming at each finished product thickness interval, wherein the convexity correction value is used for correspondingly correcting the middle blank convexity set value;
and determining a corresponding convexity setting range of the intermediate billet according to the corresponding convexity correction value and the corresponding convexity setting value of the intermediate billet.
7. The method of claim 6, wherein determining the corresponding intermediate billet crown setting range based on the corresponding crown correction value and the corresponding intermediate billet crown setting value comprises:
calculating the sum of the corresponding set value of the convexity of the intermediate billet and the corresponding corrected value of the convexity as the upper limit of the set range of the convexity of the corresponding intermediate billet;
and calculating the difference value between the corresponding set value of the convexity of the intermediate billet and the corresponding corrected value of the convexity, and taking the difference value as the lower limit of the convexity setting range of the corresponding intermediate billet.
8. The method of claim 1, further comprising:
recording the convexity setting range of the intermediate blank corresponding to each finished product thickness interval of the preset steel grade, and storing the convexity setting range in a database, wherein the database stores the convexity setting range data of the intermediate blank of at least one preset steel grade.
9. An intermediate blank convexity setting apparatus, characterized in that the apparatus comprises:
the device comprises an acquisition unit, a processing unit and a control unit, wherein the acquisition unit is used for acquiring actual intermediate billet parameters, actual finished product parameters and target finished product parameters corresponding to each finished product thickness interval of a preset steel grade aiming at the endless rolling process of the preset steel grade;
the calculating unit is used for calculating the intermediate blank convexity set value corresponding to each finished product thickness interval through the intermediate blank convexity setting model according to the actual intermediate blank parameter, the actual finished product parameter and the target finished product parameter corresponding to each finished product thickness interval;
and the determining unit is used for determining the intermediate blank convexity setting range corresponding to each finished product thickness interval according to the target finished product parameter and the intermediate blank convexity setting value corresponding to each finished product thickness interval.
10. A computer device, characterized in that the computer device comprises one or more processors and one or more memories having stored therein at least one program code, which is loaded and executed by the one or more processors to implement the operations performed by the setting method of intermediate blank crown according to any one of claims 1 to 8.
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