CN114918261A - Method and device for setting convexity of intermediate blank and computer equipment - Google Patents

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

A method, device and computer equipment for setting the crown of an intermediate blank

technical field

The present application relates to the rolling technology of endlessly rolling strip steel, and in particular, to a method, device and computer equipment for setting the crown of an intermediate billet.

Background technique

In the existing endless rolling process, since the target crown of the intermediate billet is set as a fixed percentage of the thickness of the intermediate billet for all current steel grades and specifications, this setting method causes the target crown of the intermediate billet to be different from the actual billet of most steel grades. The deviation of the crown of the intermediate billet is very large, which directly affects the actual bending/roll-shifting configuration of the finishing stand, which is very unfavorable to the shape of the finished product.

Therefore, those skilled in the art urgently need a method for setting the crown of the intermediate blank to reasonably set the crown of the intermediate blank.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a method, device and computer equipment for setting the crown of the intermediate blank, so that the crown of the intermediate blank can be reasonably set at least to a certain extent, so that the bending/shifting rolls of the finishing stand can be reasonably allocated configuration, which can ultimately optimize the finished plate shape.

Other features and advantages of the present application will become apparent from the following detailed description, or be learned in part by practice of the present application.

According to an aspect of the present application, there is provided a method for setting the crown of an intermediate blank, the method comprising: for an endless rolling process of a preset steel grade, obtaining the thickness interval of each finished product with the preset steel grade Corresponding actual intermediate billet parameters, actual finished product parameters, and target finished product parameters; according to the actual intermediate billet parameters, actual finished product parameters, and target finished product parameters corresponding to each finished product thickness interval, calculate the thickness of each finished product through the intermediate billet crown setting model The set value of the intermediate blank crown corresponding to the interval; according to the target finished product parameters corresponding to each finished product thickness interval and the set value of the intermediate blank crown, the set range of the intermediate blank crown corresponding to each finished product thickness interval is determined.

In some embodiments of the present application, the actual intermediate blank parameters include: the actual intermediate blank crown and the actual intermediate blank thickness; the actual finished product parameters include: the actual finished product crown and the actual finished product thickness; the target finished product parameters include Target finished product crown control range.

In some embodiments of the present application, the intermediate blank 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 the set value of the intermediate billet crown, C _act is the actual finished product crown, h _act is the actual finished product thickness, CH _act is the actual intermediate billet crown, H _act is the actual intermediate billet Blank thickness, C _trg is the optimal control value of the target product crown, C _cb is the lower limit of the target product crown control, and C _we is the target product crown control upper limit.

In some embodiments of the present application, before acquiring 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: obtaining the preset finished product parameters. The corresponding relationship between the number of rolling blocks and the thickness of the strip steel in the endless rolling process of the steel type is set; at least one thickness interval of the finished product is determined according to the corresponding relationship between the number of rolling blocks and the thickness of the strip steel.

In some embodiments of the present application, according to the actual intermediate blank parameters, actual finished product parameters, and target finished product parameters corresponding to each finished product thickness interval, the intermediate blank convexity corresponding to each finished product thickness interval is calculated through the intermediate blank convexity setting model. The degree setting value includes: for each thickness interval of the finished product, according to the corresponding actual intermediate blank parameters, actual finished product parameters, and target finished product parameters, according to the finished product crown control criteria and wave shape control criteria of the preset steel grade, The intermediate blank crown setting value corresponding to each finished product thickness interval is calculated by the intermediate blank crown setting model.

In some embodiments of the present application, determining the setting range of the intermediate blank convexity corresponding to each finished product thickness interval according to the target finished product parameter corresponding to each finished product thickness interval and the intermediate blank convexity setting value includes: for each finished product thickness interval In the thickness range of the finished product, according to the corresponding target finished product crown control range and the intermediate blank crown crown setting value, according to the finished product crown control criterion and wave shape control criterion, the crown correction value is determined correspondingly, and the crown correction value is used for the corresponding Correct the set value of the intermediate billet crown; according to the corresponding crown correction value and the corresponding intermediate billet crown set value, determine the corresponding intermediate billet crown set range.

In some embodiments of the present application, determining the corresponding intermediate blank crown setting range according to the corresponding crown correction value and the corresponding intermediate blank crown setting value includes: calculating the corresponding intermediate blank crown setting. The sum of the fixed value and the corresponding crown correction value is used as the upper limit of the corresponding intermediate blank crown setting range; the difference between the corresponding intermediate blank crown setting value and the corresponding crown correction value is calculated as the corresponding The lower limit of the intermediate crown crown setting range.

In some embodiments of the present application, the method further includes: recording the set ranges of the intermediate blank crowns corresponding to the thickness intervals of each finished product of the preset steel grade, and storing them in a database, where the database stores at least one The data of the setting range of the intermediate billet crown of the preset steel grade.

According to an aspect of the present application, there is provided a device for setting the crown of an intermediate blank, the device comprising: an obtaining unit, used for an endless rolling process for a preset steel grade, to obtain a device corresponding to the preset steel grade The actual intermediate billet parameters, actual finished product parameters, and target finished product parameters corresponding to each finished product thickness interval; the calculation unit is used to pass the intermediate billet parameters, actual finished product parameters, and target finished product parameters corresponding to each finished product thickness interval. The blank crown setting model calculates the intermediate blank crown setting value corresponding to each finished product thickness interval; the determination unit is used to determine the thickness of each finished product according to the target finished product parameters and the intermediate blank crown setting value corresponding to each finished product thickness interval The setting range of the intermediate blank crown corresponding to the interval.

According to one aspect of the present application, a computer device is provided, characterized in that the computer device includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories , the at least one piece of program code is loaded and executed by the one or more processors to implement the operations performed by the method for setting the crown of the intermediate blank.

Based on the above solution, the present application has at least the following advantages or advancement effects:

The present application provides a method for setting the crown of an intermediate blank. The crown of the intermediate blank is calculated through the setting model of the crown of the intermediate blank, and then the setting range of the crown of the intermediate blank is obtained according to the calculation result, and the obtained crown of the intermediate blank is set The range can be used to set the crown of the strip intermediate during endless rolling, instead of setting the target crown of the intermediate as a fixed percentage of the thickness of the intermediate, which can avoid causing the target crown of the intermediate to be different from most steel grades. There is a large deviation in the actual intermediate billet crown, so that the bending/roll-shifting settings of the finishing stand can be reasonably set to optimize the shape of the final 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 limiting of the present application.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort. In the attached image:

FIG. 1 shows a schematic flow chart of a method for setting the crown of an intermediate blank according to an embodiment of the present application;

FIG. 2 shows a schematic flowchart of a method for setting the crown of an intermediate blank according to an embodiment of the present application;

FIG. 3 shows a schematic flowchart of a method for setting the crown of an intermediate blank according to an embodiment of the present application;

FIG. 4 shows a schematic diagram of the corresponding relationship between the number of rolling blocks and the thickness of the strip in the endless rolling process of a preset steel grade according to an embodiment of the present application;

FIG. 5 shows a schematic structural diagram of an intermediate blank crown setting device in an embodiment of the present application;

FIG. 6 shows a schematic structural diagram of a computer system suitable for implementing the embodiments of the present application.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application 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 in order to give a thorough understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical solutions of the present application may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be employed. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the present application.

The block diagrams shown in the drawings are merely functional entities and do not necessarily necessarily correspond to physically separate entities. That is, these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different network and/or processor devices and/or microcontroller devices functional entity.

The flowcharts shown in the figures are only exemplary illustrations and do not necessarily include all contents and operations/steps, nor do they have to be performed in the order described. For example, some operations/steps can be decomposed, and some operations/steps can be combined or partially combined, so the actual execution order may be changed according to the actual situation.

Next, the method embodiments of the present application will be described in detail with reference to the accompanying drawings.

Please refer to FIG. 1. FIG. 1 shows a flowchart of a method for setting the crown of an intermediate blank according to an embodiment of the present application. The method may include steps S101-S103:

Step S101 , for the endless rolling process of the preset steel grade, obtain 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.

Step S102, according to the actual intermediate blank parameters, actual finished product parameters, and target finished product parameters corresponding to each finished product thickness interval, calculate the intermediate blank convexity setting value corresponding to each finished product thickness interval through the intermediate blank convexity setting model.

Step S103, according to the target finished product parameters corresponding to each finished product thickness interval and the intermediate blank convexity setting value, determine the intermediate blank convexity setting range corresponding to each finished product thickness interval.

In this application, a unique method for setting the crown of the intermediate billet is developed for each thickness interval of the strip in endless rolling, which can be based on the actual intermediate billet parameters, actual finished product parameters, and The target finished product parameter calculates the set value of the intermediate billet crown corresponding to each finished product thickness interval according to the intermediate billet crown setting model, and then further determines the intermediate billet crown setting range corresponding to each finished product thickness interval, which can reasonably set the intermediate billet crown. Spend.

In an embodiment of the present application, the actual intermediate blank parameters may include: actual intermediate blank crown and actual intermediate blank thickness; the actual finished product parameters may include: actual finished product crown and actual finished product thickness; the target finished product Parameters can include target finished crown control ranges.

In this embodiment, the intermediate blank crown setting model may be:

CH _bar =f(C _act ,h _act ,CH _act ,H _act ,C _trg ,C _cb ,C _we )

Wherein, CH _bar is the set value of the intermediate billet crown, C _act is the actual finished product crown, h _act is the actual finished product thickness, CH _act is the actual intermediate billet crown, H _act is the actual intermediate billet Blank thickness, C _trg is the optimal control value of the target product crown, C _cb is the lower limit of the target product crown control, and C _we is the target product crown control upper limit.

Please refer to FIG. 2. FIG. 2 shows a flowchart of a method for setting the crown of an intermediate blank according to an embodiment of the present application. After obtaining the actual intermediate blank parameters, Before the actual finished product parameters and the target finished product parameters, the method further includes steps S201-S202:

Step S201, obtaining the corresponding relationship between the number of rolling blocks and the thickness of the strip in the endless rolling process of the preset steel grade.

Step S202, at least one thickness interval of the finished product is determined according to the corresponding relationship between the number of rolling blocks and the thickness of the strip.

In the present application, for the endless rolling process, strips with different thickness ranges can be rolled in one endless rolling. During the endless rolling, there is a corresponding relationship between the number of rolling blocks and the thickness of the strip. However, the actual intermediate billet parameters, actual finished product parameters, and target finished product parameters corresponding to different thicknesses of finished products are not the same. Therefore, in order to set the crown of the intermediate billet produced by endless rolling in a targeted manner, it is possible to The corresponding relationship between the number of rolling blocks and the thickness of the strip determines at least one thickness interval of the finished product, and then the crown of the intermediate blank is correspondingly set according to the thickness interval of the finished product.

In an embodiment of the present application, according to the actual intermediate blank parameters, actual finished product parameters, and target finished product parameters corresponding to each finished product thickness interval, the intermediate blank convexity corresponding to each finished product thickness interval is calculated by using the intermediate blank convexity setting model. The method for setting the value of the thickness may include: for each thickness interval of the finished product, according to the corresponding actual intermediate billet parameters, actual finished product parameters, and target finished product parameters, according to the finished product crown control criterion and wave shape control of the preset steel grade According to the criterion, the set value of the intermediate blank crown corresponding to each finished product thickness interval is calculated through the intermediate blank crown setting model.

Please refer to FIG. 3. FIG. 3 shows a schematic flowchart of a method for setting the crown of an intermediate blank according to an embodiment of the present application. According to the target finished product parameters corresponding to each thickness interval of the finished product and the setting value of the crown of the intermediate blank, The method for determining the setting range of the intermediate blank convexity corresponding to each finished product thickness interval may include steps S301-S302:

Step S301, for each finished product thickness interval, according to the corresponding target finished product crown control range and the intermediate blank crown crown setting value, according to the finished product crown control criterion and the wave shape control criterion, correspondingly determine the crown correction value. The degree correction value is used to correspondingly correct the set value of the crown of the intermediate blank.

Step S302 , according to the corresponding crown correction value and the corresponding intermediate blank crown setting value, determine the corresponding intermediate blank crown setting range.

In this embodiment, according to the corresponding convexity correction value and the corresponding intermediate blank convexity setting value, determining the corresponding intermediate blank convexity setting range may include:

Calculate the sum of the corresponding intermediate blank crown setting value and the corresponding crown correction value, as the upper limit of the corresponding intermediate blank crown setting range; calculate the corresponding intermediate blank crown setting value and the corresponding crown correction value The difference between the values is used as the lower limit of the setting range of the corresponding intermediate billet crown.

In the present application, in order to improve the flexibility of the setting method, the set value of the intermediate blank crown can be corrected according to the finished product crown control criterion and the wave shape control criterion, so as to obtain the intermediate blank Convexity control range. According to the control range of the intermediate billet crown, those skilled in the art can judge whether the actual intermediate billet crown in the subsequent endless rolling process is reasonable. If the actual intermediate billet crown is within the intermediate billet crown control range, it can be determined that the current actual intermediate billet crown is relatively reasonable; if the actual intermediate billet crown is outside the intermediate billet crown control range, Then it can be determined that the current actual intermediate billet crown is unreasonable, and the set value of the intermediate billet crown during the endless rolling process needs to be adjusted in time.

In an embodiment of the present application, the method may further include: recording the intermediate blank crown setting ranges corresponding to each finished product thickness interval of the preset steel grade, and saving them in a database, where the database saves at least one The set range data of the intermediate billet crown of the preset steel grades.

In the present application, the setting range of the intermediate billet crowns of different steel grades in different thickness ranges can be stored in the database, and the corresponding intermediate billet crowns can be read from the database during endless rolling of a certain steel type. degree setting range. Under the endless rolling process, accurate setting of different steel grades and different thickness ranges can be achieved for the crown setting of the intermediate billet.

In order for those skilled in the art to have a deeper understanding of the present application, the technical solutions provided by the present application will be described below with reference to a complete embodiment.

Taking the three-stand rough rolling + five-stand finishing rolling tandem mill of an endless rolling production line as an example, the method for setting the crown of the intermediate billet provided in the present application is adopted.

Specific examples are as follows:

Referring to FIG. 4 , FIG. 4 shows a schematic diagram of the corresponding relationship between the number of rolling blocks and the thickness of the strip in the endless rolling process of a preset steel grade according to an embodiment of the present application.

Select a pickling plate steel grade SMAB that is endlessly rolled, and the thickness specification is in the range of 1.17-3.5mm. Thicken again. As shown in Figure 4, 401 indicates that the target thickness of the first strip is 3.5mm, 402 indicates that the target thickness of the 25th strip is 1.2mm, and 403 indicates that the target thickness of the 68th strip is 1.9mm. , the pulling speed can be stabilized at 5.1m/min during the rolling process.

1.17-3.5mm is divided into 10 thickness intervals. Based on the target crown control criterion and wave shape criterion of the steel grade, the intermediate blank crown setting model is used to determine the intermediate blank crown under different thickness levels. The set value is optimized for calculation, and the calculation results can be shown in Table 1:

serial number Thickness interval Intermediate blank crown setting value serial number Thickness interval Intermediate blank crown setting value 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 intermediate blank crown setting value, and then according to the finished product crown control range and standard, the corresponding crown correction value is further determined. The crown correction value is used to correspondingly correct the intermediate blank crown crown setting value. The result is As shown in table 2:

Table 2 In summary, the final control range of the intermediate blank corresponding to a certain pickling steel grade SMAB can be shown in Table 3:

serial number Thickness interval Intermediate blank crown control range 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

Through the practical application of the present application, the crown of the intermediate blank in the endless continuous rolling process can be reasonably set. Whether the setting of the intermediate billet crown is reasonable or not has a great influence on the bending/roll shifting configuration of each stand in the finishing rolling, the proportional crown distribution between the stands, and the control accuracy of the finished product crown. Like the degree control, the closed-loop control setting is formed, which provides an important basis for realizing the final rolling target of the product and ensuring the shape control instruction.

Next, an apparatus embodiment of the present application will be introduced with reference to the accompanying drawings.

Please refer to FIG. 5 , which shows a schematic structural diagram of an apparatus for setting the crown of an intermediate blank according to an embodiment of the present application. The apparatus 500 includes an acquisition unit 501 , a calculation unit 502 , and a determination unit 503 .

The specific configuration of the device 500 may be as follows: the obtaining unit 501 is used to obtain the actual intermediate billet parameters and actual finished products corresponding to each finished product thickness interval of the preset steel grade for the endless rolling process of the preset steel grade. parameters, and target finished product parameters; the calculation unit 502 is used to calculate the corresponding thickness of each finished product through the intermediate billet convexity setting model according to the actual intermediate blank parameters, actual finished product parameters, and target finished product parameters corresponding to each finished product thickness interval. Intermediate blank crown setting value; the determining unit 503 is used to determine the intermediate blank crown setting range corresponding to each finished product thickness interval according to the target finished product parameter corresponding to each finished product thickness interval and the intermediate blank crown setting value.

Please refer to FIG. 6. FIG. 6 shows a schematic structural diagram of a computer system suitable for implementing the 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 impose any limitations on the functions and scope of use of the embodiments of the present application.

As shown in FIG. 6 , the computer system 600 includes a central processing unit (Central Processing Unit, CPU) 601, which can be loaded into a random device according to a program stored in a read-only memory (Read-Only Memory, ROM) 602 or from a storage part 608 A program in a memory (Random Access Memory, RAM) 603 is accessed to perform various appropriate actions and processes, for example, the methods described in the above embodiments are performed. In the RAM 603, various programs and data necessary for system operation are also stored. The CPU 601 , the ROM 602 , and the RAM 603 are connected to each other through a bus 604 . An Input/Output (I/O) interface 605 is also connected to the bus 604 .

The following components are connected to the I/O interface 605: an input section 606 including a keyboard, a mouse, etc.; an output section 607 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc. ; a storage part 608 including a hard disk and the like; and a communication part 609 including a network interface card such as a LAN (Local Area Network) card, a modem, and the like. The communication section 609 performs communication processing via a network such as the Internet. A drive 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, etc., is mounted on the drive 610 as needed so that a computer program read therefrom is installed into the storage section 608 as needed.

In particular, according to embodiments of the present application, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the method illustrated in the flowchart. In such an embodiment, the computer program may be downloaded and installed from the network via the communication portion 609 and/or installed from the removable medium 611 . When the computer program is executed by the 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 above two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above. More specific examples of computer readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable Erasable Programmable Read Only Memory (EPROM), flash memory, optical fiber, portable Compact Disc Read-Only Memory (CD-ROM), optical storage device, magnetic storage device, or any suitable of the above The combination. In this application, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code therein. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device . Program code embodied on a computer-readable medium may be transmitted using any suitable 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. Wherein, each block in the flowchart or block diagram may represent a module, program segment, or part of code, and the above-mentioned module, program segment, or part of code contains one or more executables for realizing the specified logical function instruction. It should also be noted that, in some alternative implementations, the functions noted in the blocks 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 is also noted that each block of the block diagrams or flowchart illustrations, and combinations of blocks in the block diagrams or flowchart illustrations, can be implemented in special purpose hardware-based systems that perform the specified functions or operations, or can be implemented using A combination of dedicated hardware and computer instructions is implemented.

The units involved in the embodiments of the present application may be implemented in software or hardware, and the described units may also be provided in a processor. Among them, the names of these units do not constitute a limitation on the unit itself under certain circumstances.

As another aspect, the present application also provides a computer program product or computer program, where the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the method for setting the crown of the intermediate blank described in the above embodiments.

As another aspect, the present application also provides a computer-readable medium. The computer-readable medium may be included in the electronic device described in the above embodiments; it may also exist alone without being assembled into the electronic device. middle. The computer-readable medium carries one or more programs, and when the one or more programs are executed by an electronic device, the electronic device can implement the method for setting the crown of the intermediate blank described in the above embodiments.

It should be noted that although several modules or units of the apparatus for action performance are mentioned in the above detailed description, this division is not mandatory. Indeed, according to embodiments of the present application, the features and functions of two or more modules or units described above may be embodied in one module or unit. Conversely, the features and functions of one module or unit described above may be further divided into multiple modules or units to be embodied.

From the description of the above embodiments, those skilled in the art can easily understand that the exemplary embodiments described herein may be implemented by software, or may be implemented by software combined with necessary hardware. Therefore, the technical solutions according to the embodiments of the present application may be embodied in the form of software products, and the software products may be stored in a non-volatile storage medium (which may be CD-ROM, U disk, mobile hard disk, etc.) or on the network , which includes several instructions to cause 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 readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses or adaptations of this application that follow the general principles of this application and include common knowledge or conventional techniques in the technical field not disclosed in this application .

It is to be understood that the present application is not limited to the precise structures described above and illustrated in the accompanying 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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