Method for generating temperature of plate blank in heating furnace and related equipment

Abstract

The invention discloses a method for generating the temperature of a plate blank in a heating furnace and related equipment, and relates to the technical field of heating furnaces, and the method comprises the following steps: obtaining thermophysical parameter data and surface temperature of the plate blank; calculating according to the thermophysical parameter data and a heat conduction equation to obtain the average temperature of the plate blank; and calculating the average temperature of the plate blank and the surface temperature according to a linear average method to obtain the average temperature. The average temperature of the plate blank is calculated through the optimized method based on the heat conduction equation, the control precision of the discharging temperature of the plate blank is improved, the temperature of the plate blank in the heating furnace is controlled more accurately, and the purpose of improving the heating quality of the plate blank is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of heating furnaces, and in particular to a method for generating the temperature of a slab in a heating furnace and related equipment. Background Art

[0002] At present, the heating furnace is an important equipment for hot rolling production. After the slab is heated by the heating furnace, it enters the rough rolling mill for rolling. The rough rolling temperature has certain process requirements. The slab needs to be heated to the set value in the heating furnace according to the process requirements. Since the slab has a certain thickness, when the slab enters the heating furnace, the temperature is high on the surface and low inside; when heated in the heating furnace, the temperature is high on the outside and low on the inside.

[0003] However, how to calculate the temperature of the slab will affect the control accuracy of the heating furnace. At present, there are two main conventional methods for calculating the slab temperature, using a linear formula to calculate the average temperature of the slab or using a heat conduction equation to calculate the average temperature of the slab. However, these two methods cannot fully meet the needs of on-site production in terms of the control accuracy of the furnace temperature during actual application. At present, there is no appropriate method to solve the above problems. Therefore, it is necessary to propose a method for generating the slab temperature in the heating furnace to at least solve some of the above problems. Summary of the invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description of the Invention section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0005] In a first aspect, an embodiment of the present application provides a method for generating a slab temperature in a heating furnace, the method comprising:

[0006] Obtain the thermophysical parameter data and surface temperature of the slab;

[0007] Calculate according to the thermophysical property parameter data and the heat conduction equation to obtain the average temperature of the slab;

[0008] The average temperature is obtained by calculating according to the linear averaging method, the slab average temperature and the surface temperature.

[0009] In one embodiment of the present invention, the heat conduction equation is:

[0010]

[0011] Among them, λ is the thermal conductivity, ρ is the density of the slab, c is the specific heat; x is the thickness direction, and y is the width direction.

[0012] In one embodiment of the present invention, the step of calculating according to the linear averaging method, the slab average temperature and the surface temperature to obtain the average temperature comprises:

[0013] comparing the surface temperature to a preset temperature threshold;

[0014] When the surface temperature is less than the preset temperature threshold, the average temperature is obtained by calculation according to the linear averaging method, the slab average temperature and the first target formula.

[0015] In one embodiment of the present invention, the step after comparing the surface temperature with a preset temperature threshold comprises:

[0016] When the surface temperature is greater than the preset temperature threshold, the average temperature is obtained by calculation according to the linear averaging method, the slab average temperature and the second target formula.

[0017] In one embodiment of the present invention, the first target formula is expressed as:

[0018] T a =a1T L +a2T m ;

[0019] Among them, a1 and a2 are constant coefficients, T L is the linear averaging method, T m is the average slab temperature.

[0020] In one embodiment of the present invention, the second target formula is expressed as:

[0021] T a =b1T L +b2T m ;

[0022] Among them, b1 and b2 are constant coefficients, T L is the linear averaging method, T m is the average slab temperature.

[0023] In one embodiment of the present invention, the average slab temperature is expressed as:

[0024]

[0025] Among them, in the thickness direction of the slab, x1 is the point where the slab thickness is 0, x2 is the point where the slab thickness is maximum, and f(x, t) is the temperature distribution along the thickness direction.

[0026] In a second aspect, the present application provides a system for generating the temperature of a slab in a heating furnace, the system comprising: a data acquisition module, a first calculation module and a second calculation module;

[0027] The data acquisition module is configured to: acquire the thermal physical property parameter data and surface temperature of the slab;

[0028] The first calculation module is configured to: perform calculation according to the thermophysical property parameter data and the heat conduction equation to obtain the average temperature of the slab;

[0029] The second calculation module is configured to: perform calculation according to a linear averaging method, the slab average temperature and the surface temperature to obtain an average temperature.

[0030] In a third aspect, an electronic device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is used to implement the steps of a method for generating the temperature of a slab in a heating furnace as described in any one of the first aspects above when executing the computer program stored in the memory.

[0031] In a fourth aspect, the present application further proposes a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of a method for generating the temperature of a slab in a heating furnace according to any one of the first aspects are implemented.

[0032] In summary, a method for generating the temperature of a slab in a heating furnace in an embodiment of the present application includes: obtaining the thermophysical parameter data and the surface temperature of the slab; calculating according to the thermophysical parameter data and the heat conduction equation to obtain the average temperature of the slab; calculating according to the linear average method, the average temperature of the slab and the surface temperature to obtain the average temperature. The average temperature of the slab is calculated by the optimized method based on the heat conduction equation, which improves the control accuracy of the slab temperature out of the furnace, realizes more accurate control of the slab temperature in the heating furnace, and achieves the purpose of improving the heating quality of the slab.

[0033] The method for generating the slab temperature in the heating furnace proposed in the present application, and other advantages, objectives and features of the present application will be partially reflected through the following description, and will also be partially understood by technical personnel in the field through research and practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present specification. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0035] Figure 1A schematic diagram of a process for generating the temperature of a slab in a heating furnace provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of the structure of a system for generating the temperature of a slab in a heating furnace provided in an embodiment of the present application;

[0037] Figure 3 A schematic diagram of the structure of an electronic device for generating the temperature of a slab in a heating furnace provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0039] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0040] The heating furnace is a key equipment in the hot rolling production process. The slab can only enter the rough rolling mill for rolling after it is heated to the appropriate temperature in the heating furnace. The stability and accuracy of the rough rolling temperature are crucial to the subsequent rolling process and the quality of the final product. If the rough rolling temperature does not meet the process requirements, it may lead to unstable product performance, dimensional deviation, surface quality problems, etc.

[0041] When entering the heating furnace: Since the slab is usually preheated in some way or placed in a specific environment for a period of time before entering the heating furnace, its temperature distribution shows the characteristics of high surface and low inside. This may be because the surface of the slab is easier to exchange heat with the surrounding environment, while the heat transfer inside is relatively slow.

[0042] When heating in the heating furnace: the heating furnace generates a high temperature environment by burning fuel or other means to heat the slab. In this process, the outside of the slab is directly in contact with the high temperature environment of the heating furnace, and the heat transfer speed is fast, so the external temperature is high; while the internal heat transfer needs to be carried out by heat conduction, which is relatively slow, resulting in a low internal temperature.

[0043] Limitations of existing slab temperature calculation methods: When the linear formula is used to calculate the average slab temperature, the linear formula is usually based on some simplified assumptions and empirical data. This method may not fully consider the complex heat transfer process of the slab and the uneven temperature distribution. The linear formula may not accurately reflect the temperature changes of the slab at different locations, at different times, and under different heating conditions, resulting in inaccurate prediction of the furnace temperature and affecting the control accuracy of the heating furnace.

[0044] When the average temperature of the slab is calculated using the heat conduction equation, the heat conduction equation is a mathematical model that describes the heat transfer process based on physical principles. Although it is relatively accurate in theory, there are also some problems in practical applications. Solving the heat conduction equation usually requires determining accurate initial conditions and boundary conditions, which are often difficult to measure and determine accurately in actual production. For example, the initial temperature distribution of the slab may be uneven, and the heat exchange coefficient in the heating furnace may also change with time and position. The solution process of the heat conduction equation may be complex and require a lot of computing resources and time. In actual production, it may not be possible to obtain accurate temperature calculation results in time, which affects the real-time control of the heating furnace.

[0045] See also Figure 1 , is a schematic diagram of a process for generating the temperature of a slab in a heating furnace provided in an embodiment of the present application, which may specifically include:

[0046] S110, obtaining thermal physical property parameter data and surface temperature of the slab;

[0047] For example, the thermophysical property parameter data of the slab include thermal conductivity, specific heat capacity and density of the slab, etc. The surface temperature of the slab is an important process parameter, which directly affects the processing process and product quality of the slab.

[0048] When obtaining the thermophysical parameter data of the slab, the thermophysical parameter of the slab can be measured by laboratory experiments. For example, the thermophysical parameter of the slab can be measured by using equipment such as a thermal constant analyzer and by using methods such as a transient thermal method or a steady-state thermal method.

[0049] Transient thermal methods usually include hot wire method, hot disk method, etc., which determine parameters such as thermal conductivity by measuring the response of the material to a heat pulse in a short period of time. Steady-state thermal methods, such as the guarded hot plate method, calculate thermal conductivity by measuring the temperature gradient under stable heat flow conditions.

[0050] Experimental measurement can obtain relatively accurate thermophysical parameters, but it requires certain equipment and technical support, and may require sampling of the slab, which may have a certain impact on the production process.

[0051] According to the material composition, organizational structure and other characteristics of the slab, empirical formulas can be used to estimate the thermophysical parameters. For example, for metal materials, some empirical formulas can be used to estimate thermal conductivity and specific heat capacity based on their alloy composition and crystal structure. The accuracy of this method is relatively low, but it can be used as a quick estimation method in the absence of experimental data and detailed material information.

[0052] The surface temperature of the slab can be obtained through contact temperature measurement, non-contact temperature measurement, and model estimation.

[0053] Contact temperature measurement: Use contact temperature sensors, such as thermocouples and thermal resistors, to directly contact the surface of the slab to measure temperature. Thermocouples are a commonly used contact temperature measurement element that determines the temperature by measuring the thermoelectric potential between two different metals. Thermal resistors use the property that the resistance of a material changes with temperature to measure temperature. The advantages of contact temperature measurement are accurate measurement and fast response speed, but it is necessary to pay attention to good contact between the sensor and the surface of the slab to ensure the accuracy of the measurement. At the same time, the installation and maintenance of the sensor may have a certain impact on the production process.

[0054] Non-contact temperature measurement: non-contact temperature measurement methods are used, such as infrared thermometers, thermal imagers, etc. Infrared thermometers determine temperature by measuring the infrared radiation energy emitted by the surface of an object. Thermal imagers can measure the temperature of multiple points on the surface of an object at the same time and display the temperature distribution in the form of an image. The advantages of non-contact temperature measurement are that it does not contact the object being measured, does not interfere with the production process, and can quickly measure the temperature distribution of a large area. However, the measurement accuracy may be affected by environmental factors (such as distance, emissivity, ambient temperature, etc.).

[0055] Model estimation: According to the operating parameters of the heating furnace, the thermophysical parameters of the slab, and the heat conduction equation, a mathematical model is established to estimate the surface temperature of the slab. This method requires a deeper understanding of the heat transfer process of the heating furnace and the slab, and the establishment of an accurate mathematical model. By inputting known parameters such as the temperature of the heating furnace, the heating time, the size of the slab, etc., the surface temperature of the slab can be calculated. The accuracy of the model estimation depends on the accuracy of the model and the accuracy of the input parameters, and needs to be verified and calibrated.

[0056] S120, calculating according to the thermophysical property parameter data and the heat conduction equation to obtain the average temperature of the slab;

[0057] For example, substituting the thermophysical parameters (thermal conductivity, specific heat capacity, density, etc.) into the heat conduction equation can describe the heat transfer process inside the slab. By solving the heat conduction equation, the temperature distribution of the slab at different positions and times can be obtained. Then, the temperature distribution of the entire slab is calculated to obtain the average temperature of the slab.

[0058] S130, calculating according to a linear averaging method, the slab average temperature and the surface temperature to obtain an average temperature.

[0059] For example, using the linear averaging method Where T2 is the temperature measured on the slab surface, and T1 is the temperature measured in the middle of the slab. The linear average method, the slab average temperature and the surface temperature are used to calculate to obtain the final average temperature. The final average temperature is stored in the database.

[0060] In summary, the method for generating the slab temperature in the heating furnace proposed in the embodiment of the present application calculates the average temperature of the slab by an optimized method based on the heat conduction equation, thereby improving the control accuracy of the slab out-of-furnace temperature, achieving more precise control of the slab temperature in the heating furnace, and achieving the purpose of improving the heating quality of the slab.

[0061] In some examples, the heat conduction equation is:

[0062]

[0063] Among them, λ is the thermal conductivity, ρ is the density of the slab, c is the specific heat; x is the thickness direction, and y is the width direction.

[0064] For example, the temperature change inside the slab is related to the thermal conductivity, density, specific heat, and the rate of change of temperature in the thickness and width directions. Therefore, the average slab temperature is calculated by formula (1), wherein the average slab temperature is the average temperature of the slab entering the furnace.

[0065] In some examples, the step of calculating according to the linear averaging method, the slab average temperature and the surface temperature to obtain the average temperature includes:

[0066] comparing the surface temperature to a preset temperature threshold;

[0067] When the surface temperature is less than the preset temperature threshold, the average temperature is obtained by calculation according to the linear averaging method, the slab average temperature and the first target formula.

[0068] For example, first, the obtained surface temperature is compared with a preset temperature threshold. If the surface temperature is found to be lower than the preset temperature threshold, the linear average method and the first target formula are used to calculate the average temperature. The preset temperature threshold is 300 degrees. The surface temperature of the slab at a certain time t is T1, and the middle temperature of the slab is T2. The linear average method is used to calculate the average temperature. When the surface temperature T1 of the slab entering the furnace is lower than 300 degrees, the linear average method and the first target formula are used to calculate the average temperature.

[0069] In some examples, the steps after comparing the surface temperature to a preset temperature threshold include:

[0070] When the surface temperature is greater than the preset temperature threshold, the average temperature is obtained by calculation according to the linear averaging method, the slab average temperature and the second target formula.

[0071] For example, the obtained surface temperature is compared with a preset temperature threshold. If the surface temperature is found to be greater than the preset temperature threshold, the linear average method and the second target formula are used to calculate the average temperature. The preset temperature threshold is 300 degrees. Suppose the surface temperature of the slab at a certain time t is T1, and the middle temperature of the slab is T2. Using the linear average method When the surface temperature T1 of the slab entering the furnace is higher than 300 degrees, the linear average method and the second target formula are used to calculate the average temperature.

[0072] In some examples, the first objective formula is expressed as:

[0073] T a =a1T L +a2T m (2);

[0074] Among them, a1 and a2 are constant coefficients, T L is the linear averaging method, T m is the average slab temperature.

[0075] For example, when the surface temperature T1 of the slab entering the furnace is lower than 300 degrees, the linear average method and formula (2) are used to calculate the average temperature.

[0076] In some examples, the second objective formula is expressed as:

[0077] T a =b1T L +b2T m (3);

[0078] Among them, b1 and b2 are constant coefficients, T L is the linear averaging method, T mis the average slab temperature.

[0079] For example, when the surface temperature T1 of the slab entering the furnace is higher than 300 degrees, the linear average method and formula (3) are used to calculate the average temperature.

[0080] In some examples, the average slab temperature is expressed as:

[0081]

[0082] Among them, in the thickness direction of the slab, x1 is the point where the slab thickness is 0, x2 is the point where the slab thickness is maximum, and f(x, t) is the temperature distribution along the thickness direction.

[0083] For example, assuming that the surface temperature of the slab at a certain time t is T1 and the middle temperature of the slab is T2, the temperature distribution along the thickness direction is T=f(x, t), and the average temperature of the slab is as shown in formula (4).

[0084] The present invention is described in detail below in conjunction with the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0085] Example:

[0086] At present, when calculating the temperature of the slab entering the heating furnace, the average temperature of the slab is obtained by a linear formula based on the measured temperature of the slab and imported into the heating furnace control model. However, there is still room for further optimization of the control accuracy of the slab temperature out of the furnace. Based on the field operation experience, this application adopts the following method to calculate the average temperature of the slab entering the furnace. Calculation of the average temperature of the slab entering the furnace: The average temperature of the slab is calculated using the heat conduction equation and the obtained thermal physical parameter data of the slab. The specific heat conduction equation is shown in formula (1), and the average temperature of the slab is shown in formula (4), where: λ is the thermal conductivity, ρ is the density of the slab, c is the specific heat; x is the thickness direction, and y is the width direction. Assuming that the surface temperature of the slab at a certain time t is T1 and the middle temperature of the slab is T2, the temperature distribution along the thickness direction is T=f(x,t).

[0087] Using the linear averaging method When the surface temperature T1 of the slab entering the furnace is lower than 300 degrees, the average temperature is calculated by formula (2). When the surface temperature T1 of the slab entering the furnace is higher than 300 degrees, the average temperature is calculated by formula (3), where a1, a2, b1, and b2 are all constant coefficients. Specifically, when the slab temperature is lower than 300 degrees, T a =0.1T L +0.9T m , when the slab temperature is higher than 300 degrees, T a =0.8T L +0.2T m,Production data analysis shows that the difference in the calculation of the initial slab charging temperature has an impact of about 10 degrees on the accuracy of the slab out-of-furnace temperature, that is, the accuracy is improved by 10 degrees.

[0088] The average temperature of the slab is calculated by the optimized method based on the heat conduction equation, which improves the control accuracy of the slab out-of-furnace temperature, achieves more precise control of the slab temperature in the heating furnace, and achieves the purpose of improving the heating quality of the slab.

[0089] like Figure 2 As shown, the present application proposes a system for generating the temperature of a slab in a heating furnace, the system comprising: a data acquisition module 21, a first calculation module 22 and a second calculation module 23;

[0090] The data acquisition module 21 is configured to: acquire the thermal physical property parameter data and surface temperature of the slab;

[0091] The first calculation module 22 is configured to: perform calculations based on the thermophysical property parameter data and the heat conduction equation to obtain the average temperature of the slab;

[0092] The second calculation module 23 is configured to calculate according to a linear averaging method, the slab average temperature and the surface temperature to obtain an average temperature.

[0093] The effects of the above-mentioned system when applying the above-mentioned method can be found in the description of the above-mentioned method embodiment, which will not be repeated here.

[0094] like Figure 3 As shown, an embodiment of the present application also provides an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored in the memory 310 and executable on the processor, and when the processor 320 executes the computer program 311, the steps of any method for generating the temperature of the slab in the heating furnace are implemented.

[0095] Since the electronic device introduced in this embodiment is a device used to implement a device for generating the temperature of a slab in a heating furnace in an embodiment of the present application, based on the method introduced in the embodiment of the present application, technical personnel in this field can understand the specific implementation mode of the electronic device of this embodiment and its various variations. Therefore, how the electronic device implements the method in the embodiment of the present application will not be described in detail here. As long as the equipment used by technical personnel in this field to implement the method in the embodiment of the present application is within the scope of protection of this application.

[0096] In the specific implementation process, when the computer program 311 is executed by the processor, it can achieve Figure 1 Any implementation manner in the corresponding embodiments.

[0097] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0098] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0099] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0100] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0101] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0102] An embodiment of the present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes the process of the LDPC decoding method of the solid-state hard disk controller.

[0103] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

[0104] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0105] In the several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0106] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0107] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0108] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0109] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0110] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0111] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A method for generating the temperature of a slab in a heating furnace, characterized in that: The method comprises: Obtain the thermophysical parameter data and surface temperature of the slab; Calculate according to the thermophysical property parameter data and the heat conduction equation to obtain the average temperature of the slab; The average temperature is obtained by calculating according to the linear averaging method, the slab average temperature and the surface temperature.

2. The method for generating the slab temperature in a heating furnace according to claim 1, characterized in that: The heat conduction equation is: Among them, λ is the thermal conductivity, ρ is the density of the slab, c is the specific heat; x is the thickness direction, and y is the width direction.

3. The method for generating the slab temperature in a heating furnace according to claim 1, characterized in that: The step of calculating the average temperature by using the linear averaging method, the average temperature of the slab and the surface temperature comprises: comparing the surface temperature to a preset temperature threshold; When the surface temperature is less than the preset temperature threshold, the average temperature is obtained by calculation according to the linear averaging method, the slab average temperature and the first target formula.

4. The method for generating the temperature of a slab in a heating furnace according to claim 3, characterized in that: The steps after comparing the surface temperature with a preset temperature threshold include: When the surface temperature is greater than the preset temperature threshold, the average temperature is obtained by calculation according to the linear averaging method, the slab average temperature and the second target formula.

5. The method for generating the slab temperature in a heating furnace according to claim 3, characterized in that: The first objective formula is expressed as: T a =a1T L +a2T m ; Among them, a1 and a2 are constant coefficients, T L is the linear averaging method, T m is the average slab temperature.

6. A method for generating the temperature of a slab in a heating furnace according to claim 4, characterized in that: The second objective formula is expressed as: T a =b1T L +b2T m ; Among them, b1 and b2 are constant coefficients, T L is the linear averaging method, T m is the average slab temperature.

7. The method for generating the slab temperature in a heating furnace according to claim 3, characterized in that: The average slab temperature is expressed as: Among them, in the thickness direction of the slab, x1 is the point where the slab thickness is 0, x2 is the point where the slab thickness is maximum, and f(x, t) is the temperature distribution along the thickness direction.

8. A system for generating the temperature of a slab in a heating furnace, characterized in that: The system comprises: a data acquisition module, a first calculation module and a second calculation module; The data acquisition module is configured to: acquire the thermal physical property parameter data and surface temperature of the slab; The first calculation module is configured to: perform calculation according to the thermophysical property parameter data and the heat conduction equation to obtain the average temperature of the slab; The second calculation module is configured to: perform calculation according to a linear averaging method, the slab average temperature and the surface temperature to obtain an average temperature.

9. An electronic device, comprising: A memory and a processor, wherein the processor is used to implement the steps of a method for generating the temperature of a slab in a heating furnace as described in any one of claims 1 to 7 when executing a computer program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for generating the temperature of a slab in a heating furnace according to any one of claims 1 to 7 are implemented.

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