Laminar cooling section strip thickness direction temperature field calculation method, device, equipment and medium

Abstract

The application provides a laminar cooling section strip thickness direction temperature field calculation method, device, equipment and medium, the method obtains the ambient temperature of the environment where the strip is located, the temperature data of the current sampling point on the strip at the entrance of the laminar cooling section, the thickness data of the current sampling point on the strip, and the temperature data of the target sampling point on the strip at the entrance of the laminar cooling section, calculates the temperature field parameter of the entrance of the laminar cooling section according to the temperature data of the current sampling point at the entrance of the laminar cooling section, the thickness data of the current sampling point and the ambient temperature, corrects the temperature field parameter of the entrance of the laminar cooling section, obtains the temperature field correction parameter, and determines the temperature field of the strip in the thickness direction at the entrance of the laminar cooling section according to the temperature field correction parameter. The application improves the accuracy of the temperature field of the strip in the thickness direction at the entrance of the laminar cooling section, and the temperature field calculation method in the application has the characteristics of strong universality.

Description

Technical Field

[0001] This application relates to the field of hot rolling technology, and in particular to a method, apparatus, equipment and medium for calculating the temperature field in the thickness direction of strip steel in a laminar flow cooling section. Background Technology

[0002] Laminar flow cooling is a crucial step in a hot rolling production line, and its control precision significantly impacts the metallographic structure of the strip, making it a vital process determining the processing, mechanical, and physical properties of the finished strip. Normal operation of laminar flow cooling requires obtaining the thickness-direction temperature field of the strip at the entrances of the roughing and finishing cooling sections. These two temperature fields describe the thickness-direction temperature of the strip after exiting the finishing mill and the laminar flow cooling roughing section. The temperature directly affects the number of valves that need to be opened during laminar flow cooling. An accurate temperature field greatly contributes to improving the control precision of laminar flow cooling.

[0003] However, in actual production, only the temperature of the upper surface of the strip can be obtained through a thermometer. The lack of temperatures for the core and lower surface of the strip leads to inaccurate calculations of the temperature field along the strip's thickness. Therefore, related technologies calculate the temperature field along the entire thickness of the strip based on the known upper surface temperature.

[0004] However, the accuracy of temperature field calculations across the entire thickness of the strip in related technologies needs improvement. Therefore, it is necessary to improve the calculation methods for the temperature field along the thickness of the strip in the laminar cooling section of related technologies. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, this application provides a method, apparatus, equipment and medium for calculating the temperature field in the thickness direction of the strip in a laminar flow cooling section, so as to solve the technical problem of inaccurate calculation of the temperature field in the entire thickness direction of the strip.

[0006] According to one aspect of the embodiments of this application, a method for calculating the temperature field in the thickness direction of a strip in a laminar flow cooling section is provided. The method includes: acquiring the ambient temperature of the environment in which the strip is located, the temperature data of a current sampling point on the strip at the inlet of the laminar flow cooling section, the thickness data of the current sampling point on the strip, and the temperature data of a target sampling point on the strip at the inlet of the laminar flow cooling section; the distance between the target sampling point and the current sampling point is less than a preset distance interval threshold; calculating temperature field parameters at the inlet of the laminar flow cooling section based on the temperature data of the current sampling point at the inlet of the laminar flow cooling section, the thickness data of the current sampling point, and the ambient temperature; correcting the temperature field parameters at the inlet of the laminar flow cooling section based on a preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar flow cooling section to obtain temperature field correction parameters; and determining the temperature field in the thickness direction of the strip at the inlet of the laminar flow cooling section based on the temperature field correction parameters.

[0007] In one embodiment of this application, if the laminar flow cooling section inlet includes a rough cooling section inlet and a fine cooling section inlet, the process of calculating the temperature field parameters of the laminar flow cooling section inlet based on the temperature data of the current sampling point at the laminar flow cooling section inlet, the thickness data of the current sampling point, and the ambient temperature includes: calculating the temperature field parameters of the rough cooling section inlet based on the temperature data of the current sampling point at the rough cooling section inlet, the thickness data of the current sampling point, and the ambient temperature; the rough cooling section is used to reduce the temperature of the strip steel to a first preset temperature range; the fine cooling section is used to reduce the temperature of the strip steel to a preset coiling temperature range; the lower limit of the first preset temperature range is greater than the upper limit of the preset coiling temperature range; the preset coiling temperature range is used to meet the coiling requirements of the strip steel; the temperature field parameters of the rough cooling section outlet are obtained, and the temperature field parameters of the rough cooling section outlet are used as the temperature field parameters of the fine cooling section inlet.

[0008] In one embodiment of this application, the process of correcting the temperature field parameters at the inlet of the laminar cooling section based on a preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section to obtain temperature field correction parameters includes: if the current inlet is the inlet of the roughing cooling section, the temperature field parameters at the inlet of the roughing cooling section are corrected based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the roughing cooling section to obtain temperature field correction parameters for the inlet of the roughing cooling section; if the current inlet is the inlet of the finishing cooling section and a temperature measuring instrument is installed at the finishing cooling section inlet, the temperature field parameters at the finishing cooling section inlet are corrected based on the temperature data of the target sampling point at the finishing cooling section inlet to obtain temperature field correction parameters for the finishing cooling section inlet; the temperature measuring instrument is used to measure the temperature data of each sampling point on the strip; if the current inlet is the inlet of the finishing cooling section and the temperature measuring instrument is not installed at the finishing cooling section inlet, the temperature field parameters at the finishing cooling section inlet are used as temperature field correction parameters for the finishing cooling section inlet.

[0009] In one embodiment of this application, before obtaining the temperature field parameters at the outlet of the coarse cooling section, the method further includes: obtaining the temperature distribution equation of the strip in the thickness direction, the equation for the change of internal heat of the strip during cooling, the equation for the heat flow of the strip on the upper surface of the coarse cooling section, and the equation for the heat flow of the strip on the lower surface of the coarse cooling section; inputting the temperature field correction parameter of the inlet of the coarse cooling section into the temperature distribution equation to obtain the temperature distribution function of the strip in the thickness direction; combining and solving the temperature distribution function, the change equation, the equation for the heat flow of the upper surface, and the equation for the heat flow of the lower surface to obtain the temperature field at the outlet of the coarse cooling section; and calculating the temperature field parameters at the outlet of the coarse cooling section based on the temperature field at the outlet of the coarse cooling section and the thickness data of the current sampling point.

[0010] In one embodiment of this application, the process of calculating the temperature field parameters of the coarse cooling section inlet based on the temperature data of the current sampling point at the coarse cooling section inlet, the thickness data of the current sampling point, and the ambient temperature includes: if the temperature data of the current sampling point at the coarse cooling section inlet is within a second preset temperature range, and the thickness data of the current sampling point is within a preset thickness range, then the temperature field parameters of the coarse cooling section inlet are calculated using the temperature data of the current sampling point at the coarse cooling section inlet, the thickness data of the current sampling point, and the ambient temperature; if the temperature data of the current sampling point at the coarse cooling section inlet is not within the second preset temperature range, and the thickness data of the current sampling point is within the preset thickness range, then the temperature field parameters of the coarse cooling section inlet are calculated using the preset .... The temperature field parameters at the inlet of the roughing cooling section are calculated using the rolling temperature, the thickness data at the current sampling point, and the ambient temperature. If the temperature data at the current sampling point at the inlet of the roughing cooling section is within the second preset temperature range, and the thickness data at the current sampling point is not within the preset thickness range, then the temperature field parameters at the inlet of the roughing cooling section are calculated using the temperature data at the current sampling point at the inlet of the roughing cooling section, the preset rolling thickness, and the ambient temperature. If the temperature data at the current sampling point at the inlet of the roughing cooling section is not within the second preset temperature range, and the thickness data at the current sampling point is not within the preset thickness range, then the temperature field parameters at the inlet of the roughing cooling section are calculated using the preset final rolling temperature, the preset rolling thickness, and the ambient temperature.

[0011] In one embodiment of this application, the expression for the temperature field parameters at the inlet of the coarse cooling section includes: b R =H*(T FDT -T AIR ), where b R This represents the cooling rate characteristic parameter at the inlet of the coarse cooling section, where H represents the thickness data at the current sampling point, and T represents the thickness characteristic parameter. FDT This represents the temperature data at the current sampling point at the inlet of the coarse cooling section, T. AIR Indicates ambient temperature; Among them, a R b represents the temperature distribution parameter at the inlet of the coarse cooling section. R The parameters representing the cooling rate characteristics at the inlet of the coarse cooling section are: H represents the thickness data at the current sampling point, and a represents the temperature distribution parameter at the inlet of the coarse cooling section. R The cooling rate characteristic parameter b at the inlet of the coarse cooling section R The temperature field parameters that make up the inlet of the coarse cooling section.

[0012] In one embodiment of this application, before acquiring the temperature data of the current sampling point on the strip at the inlet of the laminar cooling section, the thickness data of the current sampling point on the strip, and the temperature data of the target sampling point on the strip at the inlet of the laminar cooling section, the method further includes: acquiring the temperature data of each sampling point on the strip at the inlet of the laminar cooling section and the thickness data of each sampling point on the strip; filtering the temperature data of a preset number of sampling points containing the current sampling point to obtain the temperature data of the current sampling point on the strip at the inlet of the laminar cooling section; filtering the thickness data of a preset number of sampling points containing the current sampling point to obtain the thickness data of the current sampling point on the strip; and filtering the temperature data of a preset number of sampling points containing the target sampling point to obtain the temperature data of the target sampling point on the strip at the inlet of the laminar cooling section.

[0013] According to one aspect of the embodiments of this application, a device for calculating the temperature field in the thickness direction of a strip in a laminar flow cooling section is provided, comprising: a data acquisition module, used to acquire the ambient temperature of the environment in which the strip is located, temperature data of a current sampling point on the strip at the inlet of the laminar flow cooling section, thickness data of the current sampling point on the strip, and temperature data of a target sampling point on the strip at the inlet of the laminar flow cooling section; wherein the distance between the target sampling point and the current sampling point is less than a preset distance interval threshold; a parameter calculation module, used to calculate temperature field parameters at the inlet of the laminar flow cooling section based on the temperature data of the current sampling point at the inlet of the laminar flow cooling section, the thickness data of the current sampling point, and the ambient temperature; a parameter correction module, used to correct the temperature field parameters at the inlet of the laminar flow cooling section based on a preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar flow cooling section, to obtain temperature field correction parameters; and a temperature field determination module, used to determine the temperature field in the thickness direction of the strip at the inlet of the laminar flow cooling section based on the temperature field correction parameters.

[0014] According to one aspect of the embodiments of this application, an electronic device is provided, the electronic device comprising: one or more processors; and a storage device for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the electronic device enables the laminar flow cooling section strip thickness direction temperature field calculation method as described above.

[0015] According to one aspect of the embodiments of this application, a readable storage medium is provided, on which computer-readable instructions are stored, which, when executed by a computer's processor, cause the computer to perform the laminar flow cooling section strip thickness direction temperature field calculation method as described above.

[0016] The beneficial effects of this application are as follows: This application obtains the ambient temperature of the strip, the temperature data of the current sampling point at the inlet of the laminar cooling section, the thickness data of the current sampling point, and the temperature data of the target sampling point at the inlet of the laminar cooling section. Based on the temperature data of the current sampling point at the inlet of the laminar cooling section, the thickness data of the current sampling point, and the ambient temperature, the temperature field parameters at the inlet of the laminar cooling section are calculated. Based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section, the temperature field parameters at the inlet of the laminar cooling section are corrected to obtain temperature field correction parameters. Based on the temperature field correction parameters, the temperature field in the thickness direction of the strip at the inlet of the laminar cooling section is determined. In the above process, after obtaining the temperature field parameters at the inlet of the laminar cooling section, the temperature field parameters at the inlet of the laminar cooling section are corrected by the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section to obtain temperature field correction parameters. Therefore, the temperature field in the thickness direction of the strip at the inlet of the laminar cooling section determined based on the temperature field correction parameters has higher accuracy. Moreover, the temperature field calculation method in this application has the characteristics of strong versatility.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0019] Figure 1 This is a schematic diagram illustrating a laminar flow cooling section and a winding region, as shown in an exemplary embodiment of this application;

[0020] Figure 2 This is a schematic diagram illustrating an exemplary system architecture as shown in an exemplary embodiment of this application;

[0021] Figure 3 This is a flowchart illustrating an exemplary embodiment of the present application of a method for calculating the temperature field in the thickness direction of the strip in a laminar cooling section;

[0022] Figure 4 This is a flowchart illustrating a method for calculating the temperature field in the thickness direction of the strip in a laminar cooling section, as shown in another exemplary embodiment of this application.

[0023] Figure 5 This is a schematic diagram illustrating the effect of coiling temperature control on a first-thickness strip, as shown in an exemplary embodiment of this application.

[0024] Figure 6 This is a schematic diagram illustrating the effect of coiling temperature control on a second thickness strip, as shown in an exemplary embodiment of this application.

[0025] Figure 7 This is a schematic diagram illustrating the effect of coiling temperature control on a third-thickness strip, as shown in an exemplary embodiment of this application.

[0026] Figure 8 This is a block diagram illustrating a laminar cooling section strip temperature field calculation device in an exemplary embodiment of this application;

[0027] Figure 9 This is a schematic diagram of the structure of a computer system for an electronic device, as illustrated in an exemplary embodiment of this application. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0030] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present application. However, it will be apparent to those skilled in the art that embodiments of the present application may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present application.

[0031] Laminar flow cooling includes a roughing cooling section and a finishing cooling section. Laminar flow cooling refers to the uniform cooling of hot-rolled strip by spraying water onto the upper and lower surfaces of the strip after it exits the finishing mill. The purpose is to uniformly control the cooling rate of the strip and bring it to the preset coiling temperature range, avoiding uneven surface temperature or stress, thereby ensuring the quality and performance of the strip.

[0032] A temperature field is a mathematical and physical model that describes the spatial and temporal variation of temperature in a physical system or region. Temperature field parameters include temperature distribution parameters and cooling rate characteristic parameters.

[0033] Figure 1 This is a schematic diagram illustrating a laminar flow cooling section and a winding region, as shown in an exemplary embodiment of this application. Figure 1 The laminar flow cooling section and coiling area include: rough cooling manifold, fine cooling manifold, temperature measuring instrument, optional temperature measuring instrument, thickness gauge and coiling machine. The rough cooling manifold, fine cooling manifold, temperature measuring instrument, optional temperature measuring instrument and thickness gauge are all located in the laminar flow cooling section. The coiling machine belongs to the coiling area and is located after the laminar flow cooling section. The finishing rolling area is before the laminar flow cooling section. The finishing mill stand is located in the finishing rolling area. The laminar flow cooling section is divided into a rough cooling section (coarse adjustment section) and a fine cooling section (fine adjustment section). A temperature measuring instrument and a thickness measuring instrument are installed at the inlet of the rough cooling section. Coarse cooling manifolds are arranged on the production line of the rough cooling section, and are located on the upper and lower surfaces of the strip. Uniform cooling is achieved by spraying water onto the upper and lower surfaces of the strip. A temperature measuring instrument can be selectively installed at the inlet of the fine cooling section. Fine cooling manifolds are arranged on the production line of the fine cooling section, and are located on the upper and lower surfaces of the strip. Uniform cooling is achieved by spraying water onto the upper and lower surfaces of the strip. Compressed air purging devices are installed at the outlet and inlet of the fine cooling section.

[0034] In one embodiment of this application, a temperature measuring instrument located at the inlet of the roughing cooling section is used to measure the temperature data of each sampling point on the upper surface of the strip at the inlet of the roughing cooling section, and a thickness measuring instrument located at the inlet of the roughing cooling section is used to measure the thickness data of each sampling point on the strip. Optionally, a temperature measuring instrument is used to measure the temperature data of each sampling point on the upper surface of the strip at the inlet of the finishing cooling section, and a temperature measuring instrument located at the outlet of the finishing cooling section is used to measure the temperature data of each sampling point on the upper surface of the strip at the outlet of the finishing cooling section.

[0035] Figure 2 This is a schematic diagram illustrating an exemplary system architecture as shown in an exemplary embodiment of this application.

[0036] Reference Figure 2As shown, the system architecture can include an L1-level system and an L2-level system. The L1-level system uses a programmable logic controller (PLC) to control the temperature measuring instrument, thickness gauge, and ambient temperature sensor. The temperature measuring instrument measures the temperature data of each sampling point on the upper surface of the strip at the inlet of the laminar flow cooling section. The thickness gauge measures the thickness data of each sampling point on the strip. The ambient temperature sensor measures the ambient temperature of the environment in which the strip is located. After obtaining the ambient temperature of the environment in which the strip is located, the data is uploaded to the L2-level system. Similarly, after the temperature measuring instrument obtains the temperature data of each sampling point on the upper surface of the strip at the inlet of the laminar flow cooling section, the data is uploaded to the L2-level system. After the thickness gauge obtains the thickness data of each sampling point on the strip, the data is uploaded to the L2-level system. The L2-level system calculates the temperature field of the strip in the thickness direction at the inlet of the laminar flow cooling section based on the ambient temperature of the environment in which the strip is located, the temperature data of each sampling point on the upper surface of the strip at the inlet of the laminar flow cooling section, and the thickness data of each sampling point on the strip.

[0037] Indicatively, the L2 system acquires the ambient temperature of the strip in the L1 system, the temperature data of the current sampling point at the laminar cooling section inlet, the thickness data of the current sampling point, and the temperature data of the target sampling point at the laminar cooling section inlet. Based on the temperature data of the current sampling point at the laminar cooling section inlet, the thickness data of the current sampling point, and the ambient temperature, it calculates the temperature field parameters at the laminar cooling section inlet. Based on the preset final rolling temperature or the temperature data of the target sampling point at the laminar cooling section inlet, the temperature field parameters at the laminar cooling section inlet are corrected to obtain temperature field correction parameters. Based on the temperature field correction parameters, the temperature field in the thickness direction of the strip at the laminar cooling section inlet is determined. In the above process, after obtaining the temperature field parameters at the laminar cooling section inlet, the temperature field parameters at the laminar cooling section inlet are corrected using the preset final rolling temperature or the temperature data of the target sampling point at the laminar cooling section inlet to obtain temperature field correction parameters. This results in higher accuracy of the temperature field in the thickness direction of the strip at the laminar cooling section inlet determined based on the temperature field correction parameters. Moreover, the temperature field calculation method in this application has the characteristic of strong versatility.

[0038] It should be noted that the method for calculating the temperature field in the thickness direction of the strip in the laminar flow cooling section provided in this application embodiment is generally executed by an L2-level system. Correspondingly, the device for calculating the temperature field in the thickness direction of the strip in the laminar flow cooling section is generally set in an L2-level system.

[0039] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0040] Figure 3This is a flowchart illustrating an exemplary embodiment of the present application of a method for calculating the temperature field in the thickness direction of strip in a laminar flow cooling section. This method can be executed by a computational processing device, which can be set up... Figure 2 The L2 level system shown. (Refer to...) Figure 3 As shown, the method for calculating the temperature field in the thickness direction of the strip in the laminar flow cooling section includes at least steps S310 to S330, which are described in detail below:

[0041] In step S310, the ambient temperature of the strip, the temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section, the thickness data of the current sampling point on the strip, and the temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section are acquired. In one embodiment of this application, the distance between the target sampling point and the current sampling point is less than a preset distance interval threshold. The preset distance interval threshold can be one or several times the interval between two adjacent sampling points; for example, the target sampling point is the sampling point preceding the current sampling point. The temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section includes at least the temperature data of the current sampling point on the strip at the inlet of the roughing cooling section. Specifically, when temperature measuring instruments are installed at both the inlet of the roughing cooling section and the inlet of the finishing cooling section, the temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section includes both the temperature data of the current sampling point on the strip at the inlet of the roughing cooling section and the temperature data of the current sampling point on the strip at the inlet of the finishing cooling section. When a temperature measuring instrument is installed at the inlet of the roughing cooling section but not at the inlet of the finishing cooling section, the temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section only includes the temperature data of the current sampling point on the strip at the inlet of the roughing cooling section. The thickness data of the current sampling point on the strip is the thickness data collected by each sampling point on the strip at the inlet of the roughing cooling section. The temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section shall include at least the temperature data of the target sampling point on the strip at the inlet of the rough cooling section. Wherein, when temperature measuring instruments are installed at both the inlet of the rough cooling section and the inlet of the fine cooling section, the temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section shall include both the temperature data of the target sampling point on the strip at the inlet of the rough cooling section and the temperature data of the target sampling point on the strip at the inlet of the fine cooling section. When a temperature measuring instrument is installed at the inlet of the rough cooling section but not at the inlet of the fine cooling section, the temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section shall only include the temperature data of the target sampling point on the strip at the inlet of the rough cooling section.

[0042] In step S320, the temperature field parameters of the laminar flow cooling section inlet are calculated based on the temperature data of the current sampling point at the laminar flow cooling section inlet, the thickness data of the current sampling point, and the ambient temperature. In one embodiment of this application, the laminar flow cooling section inlet includes a rough cooling section inlet and a fine cooling section inlet. The process of calculating the temperature field parameters of the laminar flow cooling section inlet based on the temperature data of the current sampling point at the laminar flow cooling section inlet, the thickness data of the current sampling point, and the ambient temperature includes: calculating the temperature field parameters of the rough cooling section inlet based on the temperature data of the current sampling point at the rough cooling section inlet, the thickness data of the current sampling point, and the ambient temperature; the rough cooling section is used to reduce the temperature of the strip steel to a first preset temperature range; the fine cooling section is used to reduce the temperature of the strip steel to a preset coiling temperature range; the lower limit of the first preset temperature range is greater than the upper limit of the preset coiling temperature range; the preset coiling temperature range is used to meet the coiling requirements of the strip steel; the temperature field parameters of the rough cooling section outlet are obtained, and the temperature field parameters of the rough cooling section outlet are used as the temperature field parameters of the fine cooling section inlet.

[0043] In step S330, the temperature field parameters at the inlet of the laminar cooling section are corrected based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section to obtain temperature field correction parameters. In one embodiment of this application, the process of correcting the temperature field parameters at the inlet of the laminar cooling section based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section to obtain temperature field correction parameters includes: if the current inlet is the roughing section inlet, the temperature field parameters at the roughing section inlet are corrected based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the roughing section to obtain temperature field correction parameters for the roughing section inlet; if the current inlet is the finishing section inlet and a temperature measuring instrument is installed at the finishing section inlet, the temperature field parameters at the finishing section inlet are corrected based on the temperature data of the target sampling point at the finishing section inlet to obtain temperature field correction parameters for the finishing section inlet; the temperature measuring instrument is used to measure the temperature data of each sampling point on the strip; if the current inlet is the finishing section inlet and a temperature measuring instrument is not installed at the finishing section inlet, the temperature field parameters at the finishing section inlet are used as the temperature field correction parameters for the finishing section inlet.

[0044] In step S340, the temperature field of the strip in the thickness direction at the inlet of the laminar cooling section is determined based on the temperature field correction parameters. In one embodiment of this application, after obtaining the temperature field parameters at the inlet of the laminar cooling section, the temperature field parameters at the inlet of the laminar cooling section are corrected by using a preset final rolling temperature or temperature data of the target sampling point at the inlet of the laminar cooling section, thus obtaining temperature field correction parameters. This results in higher accuracy of the temperature field of the strip in the thickness direction at the inlet of the laminar cooling section determined based on the temperature field correction parameters, and the temperature field calculation method in this application has strong versatility.

[0045] In one embodiment of this application, if the laminar flow cooling section inlet includes a coarse cooling section inlet and a fine cooling section inlet, then the process of calculating the temperature field parameters of the laminar flow cooling section inlet based on the temperature data of the current sampling point at the laminar flow cooling section inlet, the thickness data of the current sampling point, and the ambient temperature includes:

[0046] Based on the temperature data at the current sampling point at the inlet of the coarse cooling section, the thickness data at the current sampling point, and the ambient temperature, the temperature field parameters at the inlet of the coarse cooling section are calculated. In one embodiment of this application, the coarse cooling section is used to reduce the temperature of the strip to a first preset temperature range; the fine cooling section is used to reduce the temperature of the strip to a preset coiling temperature range; the lower limit of the first preset temperature range is greater than the upper limit of the preset coiling temperature range; the preset coiling temperature range is used to meet the coiling requirements of the strip; the calculation formula for the temperature field parameters at the inlet of the coarse cooling section is as follows:

[0047] b R =H*(T FDT -T AIR Equation (1)

[0048] Among them, b R This represents the cooling rate characteristic parameter at the inlet of the coarse cooling section, where H represents the thickness data at the current sampling point, and T represents the thickness characteristic parameter. FDT This represents the temperature data at the current sampling point at the inlet of the coarse cooling section, T. AIR Indicates ambient temperature.

[0049]

[0050] Among them, a R b represents the temperature distribution parameter at the inlet of the coarse cooling section. R The parameters representing the cooling rate characteristics at the inlet of the coarse cooling section are: H represents the thickness data at the current sampling point, and a represents the temperature distribution parameter at the inlet of the coarse cooling section. R The cooling rate characteristic parameter b at the inlet of the coarse cooling section R Temperature field parameters that make up the inlet of the coarse cooling section.

[0051] In one embodiment of this application, the cooling rate characteristic parameter b at the inlet of the fine cooling section is obtained. F Subsequently, the cooling rate characteristic parameter b at the inlet of the fine cooling section... F Replace the cooling rate characteristic parameter b at the inlet of the coarse cooling section R The temperature distribution parameter a at the inlet of the fine cooling section is calculated using formula (2). F .

[0052] The temperature field parameters at the outlet of the rough cooling section are obtained and used as the temperature field parameters at the inlet of the fine cooling section. In one embodiment of this application, the outlet of the rough cooling section is the inlet of the fine cooling section; therefore, the temperature field parameters at the outlet of the rough cooling section are used as the temperature field parameters at the inlet of the fine cooling section.

[0053] In one embodiment of this application, the process of correcting the temperature field parameters at the inlet of the laminar cooling section based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section, to obtain the corrected temperature field parameters, includes:

[0054] If the current inlet is the inlet of the roughing cooling section, the temperature field parameters of the roughing cooling section inlet are corrected based on the preset final rolling temperature or the temperature data of the target sampling point at the roughing cooling section inlet, resulting in the corrected temperature field parameters of the roughing cooling section inlet. In one embodiment of this application, the calculation formula for the corrected temperature field parameters of the roughing cooling section inlet is as follows:

[0055]

[0056] in, b represents the correction parameter for the cooling rate characteristics at the inlet of the coarse cooling section. R α represents the cooling rate characteristic parameter at the inlet of the rough cooling section. R Indicates the correction rate for the coarse cooling section. This indicates the temperature data at the current sampling point at the inlet of the coarse cooling section. This indicates the temperature data of the target sampling point at the inlet of the roughing and cooling section or the preset final rolling temperature.

[0057] In one embodiment of this application, when the current sampling point is the first sampling point on the upper surface of the strip and the target sampling point is the previous sampling point, the temperature data of the target sampling point at the inlet of the roughing cooling section is null. In this case, the temperature field parameters at the inlet of the roughing cooling section need to be corrected by using a preset final rolling temperature to obtain the temperature field correction parameters at the inlet of the roughing cooling section. When the current sampling point is not the first sampling point on the upper surface of the strip, the temperature data of the target sampling point at the inlet of the roughing cooling section is not null, and the temperature data of the target sampling point at the inlet of the roughing cooling section is not within the second preset temperature range, the temperature field parameters at the inlet of the roughing cooling section need to be corrected by using a preset final rolling temperature to obtain the temperature field correction parameters at the inlet of the roughing cooling section. When the current sampling point is not the first sampling point on the upper surface of the strip, the temperature data of the target sampling point at the inlet of the roughing cooling section is not null, and the temperature data of the target sampling point at the inlet of the roughing cooling section is within the second preset temperature range, the temperature field parameters at the inlet of the roughing cooling section need to be corrected by using the temperature data of the target sampling point at the inlet of the roughing cooling section to obtain the temperature field correction parameters at the inlet of the roughing cooling section.

[0058]

[0059] in, This represents the temperature distribution correction parameter at the inlet of the coarse cooling section. This represents the correction parameter for the cooling rate characteristics at the inlet of the coarse cooling section, and H represents the thickness data at the current sampling point.

[0060] If the current inlet is the inlet of the cooling section and a temperature measuring instrument is installed at the cooling section inlet, then the temperature field parameters of the cooling section inlet are corrected based on the temperature data of the target sampling point at the cooling section inlet, resulting in the corrected temperature field parameters of the cooling section inlet. In one embodiment of this application, the temperature measuring instrument is used to measure the temperature data of each sampling point on the strip, and the calculation formula for the corrected temperature field parameters of the cooling section inlet is as follows:

[0061]

[0062] in, b represents the correction parameter for the cooling rate characteristics at the inlet of the fine cooling section. F α represents the cooling rate characteristic parameter at the inlet of the fine cooling section. F Indicates the correction rate of the fine cooling section. This indicates the temperature data at the current sampling point at the inlet of the cooling section. This represents the temperature data of the target sampling point at the inlet of the fine cooling section.

[0063] In one embodiment of this application, when the current sampling point is the first sampling point on the upper surface of the strip and the target sampling point is the previous sampling point of the current sampling point, the temperature data of the target sampling point at the inlet of the finishing cooling section is null. In this case, it is not necessary to correct the temperature field parameters at the inlet of the finishing cooling section, and the temperature field parameters at the inlet of the finishing cooling section can be directly used as the temperature field correction parameters at the inlet of the finishing cooling section. When the current sampling point is not the first sampling point on the upper surface of the strip, and the temperature data of the target sampling point at the inlet of the rough cooling section is not null, it is necessary to correct the temperature field parameters at the inlet of the finishing cooling section using the temperature data of the target sampling point at the inlet of the finishing cooling section to obtain the temperature field correction parameters at the inlet of the finishing cooling section.

[0064]

[0065] in, This indicates the temperature distribution correction parameter at the inlet of the fine cooling section. This represents the correction parameter for the cooling rate characteristics at the inlet of the fine cooling section, and H represents the thickness data at the current sampling point.

[0066] In one embodiment of this application, the temperature field parameters at the inlet of the fine cooling section are corrected based on the temperature data of the target sampling point at the inlet of the fine cooling section. Before obtaining the corrected temperature field parameters at the inlet of the fine cooling section, the temperature data of each sampling point on the strip at the inlet of the fine cooling section are collected by a temperature measuring instrument. The temperature data of the inlet of the fine cooling section, which includes a preset number of sampling points containing the target sampling point, are filtered to obtain the temperature data of the target sampling point on the strip at the inlet of the fine cooling section.

[0067] If the current inlet is the inlet of the cooling section and no temperature measuring instrument is installed at the cooling section inlet, then the temperature field parameters of the cooling section inlet are used as the temperature field correction parameters of the cooling section inlet. In one embodiment of this application, when the current inlet is the cooling section inlet and no temperature measuring instrument is installed at the cooling section inlet, it is not necessary to correct the temperature field parameters of the cooling section inlet; the temperature field parameters of the cooling section inlet are directly used as the temperature field correction parameters of the cooling section inlet.

[0068] In one embodiment of this application, before obtaining the temperature field parameters at the outlet of the roughing cooling section, the method for calculating the temperature field in the thickness direction of the strip in the laminar flow cooling section further includes:

[0069] The temperature distribution equations along the thickness direction of the strip, the change in internal heat during cooling, the heat flow equations on the upper and lower surfaces of the strip in the roughing cooling section, are obtained. In one embodiment of this application, the expression for the temperature distribution equation is as follows:

[0070] T(y) = a i *y 2 +b i +T j Equation (7)

[0071] Where T(y) represents the temperature distribution equation of the strip in the thickness direction, a i b represents the temperature distribution parameter at the inlet of the laminar cooling section. i T represents the cooling rate characteristic parameter at the inlet of the laminar cooling section. j This represents the temperature data at the inlet of the laminar cooling section of the current sampling point. y represents the position of the strip in the thickness direction; when y is 0, it indicates the core of the strip. When, it represents the upper surface of the strip, y is taken as When, it indicates the lower surface of the strip.

[0072] In one embodiment of this application, when i is R, b R The parameter a represents the cooling rate characteristic of the inlet of the coarse cooling section. R This represents the temperature distribution parameters at the inlet of the coarse cooling section. When j is FDT, T FDT This represents the temperature data at the current sampling point at the inlet of the coarse cooling section; when i is F, b fThe parameter representing the cooling rate characteristic at the inlet of the fine cooling section, a F This represents the temperature distribution parameters at the inlet of the fine cooling section. When j is MID, T MID This indicates the temperature data at the current sampling point at the inlet of the cooling section.

[0073] The expression for the equation of change is shown below:

[0074]

[0075] Where ρ represents the density of the strip steel, with units of kg / m³. 3 c(T) represents the specific heat capacity of the strip at different temperatures, in kJ / (kg·℃), T(t,y) represents the temperature distribution along the thickness of the strip at different times, λ(T) represents the thermal conductivity of the strip at different temperatures, in kJ / (s·m·℃), t represents time, and y represents the position along the thickness of the strip.

[0076] The expression for the heat flow equation of the upper surface:

[0077]

[0078] Where λ(T) represents the thermal conductivity of the strip steel at different temperatures. φ represents the temperature distribution on the upper surface of the strip at different times. TOp The equation for the heat flow rate of the strip on the upper surface in the roughing cooling section is derived from the moving speed of the strip in the roughing cooling section, the temperature of the upper surface of the strip, and the water flow rate of the valve in the roughing cooling manifold. t represents time, and y represents the position of the strip in the thickness direction.

[0079] The expression for the heat flow equation of the lower surface:

[0080]

[0081] Where λ(T) represents the thermal conductivity of the strip steel at different temperatures. φ represents the temperature distribution on the lower surface of the strip at different times. BOT The equation for the heat flow rate of the lower surface of the strip in the roughing cooling section is derived from the moving speed of the strip in the roughing cooling section, the temperature of the lower surface of the strip, and the water flow rate of the valve in the roughing cooling manifold. t represents time, and y represents the position of the strip in the thickness direction.

[0082] By inputting the temperature field correction parameters at the inlet of the rough cooling section into the temperature distribution equation, the temperature distribution function of the strip in the thickness direction is obtained. In one embodiment of this application, the expression of the temperature distribution function is as follows:

[0083]

[0084] Where T(0,y) represents the temperature distribution function along the thickness direction of the strip at time t=0. This represents the temperature distribution correction parameter at the inlet of the coarse cooling section. This represents the correction parameter for the cooling rate characteristics at the inlet of the roughing section, where y represents the position in the strip thickness direction, and T... FDT This indicates the temperature data at the current sampling point at the inlet of the coarse cooling section.

[0085] The temperature distribution function, variation equation, upper surface heat flow equation, and lower surface heat flow equation are combined and solved to obtain the temperature field at the outlet of the coarse cooling section. In one embodiment of this application, the process of solving the combined equation using the temperature data of the current sampling point at the inlet of the coarse cooling section includes: solving equations (8)-(11) using the finite element method (FEM), finite difference method (FDM), or finite volume method (FVM) to obtain the temperature field at the outlet of the coarse cooling section.

[0086] Based on the temperature field at the outlet of the coarse cooling section and the thickness data at the current sampling point, the temperature field parameters at the outlet of the coarse cooling section are calculated. In one embodiment of this application, the calculation formula for the temperature field parameters at the outlet of the coarse cooling section is as follows:

[0087]

[0088] Among them, b F T represents the cooling rate characteristic parameter at the inlet of the fine cooling section (i.e., the cooling rate characteristic parameter at the outlet of the rough cooling section). RE T represents the temperature field at the outlet of the coarse cooling section. RE (0) represents the temperature of the strip core, y represents the position of the strip in the thickness direction, and H represents the thickness data of the current sampling point.

[0089]

[0090] Among them, a F This represents the temperature distribution parameters at the inlet of the fine cooling section (i.e., the temperature distribution parameters at the outlet of the rough cooling section), b F The parameter represents the cooling rate characteristic parameter at the inlet of the fine cooling section (i.e., the cooling rate characteristic parameter at the outlet of the coarse cooling section), and H represents the thickness data at the current sampling point.

[0091] In one embodiment of this application, the process of calculating the temperature field parameters at the inlet of the coarse cooling section based on the temperature data of the current sampling point at the inlet of the coarse cooling section, the thickness data of the current sampling point, and the ambient temperature includes:

[0092] If the temperature data of the current sampling point at the inlet of the coarse cooling section is within the second preset temperature range, and the thickness data of the current sampling point is within the preset thickness range, then the temperature field parameters of the coarse cooling section inlet are calculated using the temperature data of the current sampling point at the inlet of the coarse cooling section, the thickness data of the current sampling point, and the ambient temperature. In one embodiment of this application, the preset temperature range and the preset thickness range are determined according to the actual situation. The formulas for calculating the temperature field parameters of the coarse cooling section inlet using the temperature data of the current sampling point at the inlet of the coarse cooling section, the thickness data of the current sampling point, and the ambient temperature are shown in formulas (1) and (2).

[0093] If the temperature data of the current sampling point at the inlet of the cold section is not within the second preset temperature range, and the thickness data of the current sampling point is within the preset thickness range, then the temperature field parameters at the inlet of the cold section are calculated using the preset final rolling temperature, the thickness data of the current sampling point, and the ambient temperature. In one embodiment of this application, the process of calculating the temperature field parameters at the inlet of the cold section using the preset final rolling temperature, the thickness data of the current sampling point, and the ambient temperature includes: (1) The preset final rolling temperature includes the preset target final rolling temperature and the default temperature. If the preset target final rolling temperature is within the second preset temperature range, the calculation formula for the temperature field parameters at the inlet of the cold section is as follows:

[0094]

[0095] Among them, b R This represents the cooling rate characteristic parameter at the inlet of the coarse cooling section, where H represents the thickness data at the current sampling point. T represents the preset target final rolling temperature. AIR Indicates ambient temperature.

[0096] In one embodiment of this application, the preset target final rolling temperature is set according to the final rolling temperature value of different strip steel types, and the default temperature is the same final rolling temperature value set in advance for all strip steel types.

[0097] After calculating the cooling rate characteristic parameters of the inlet of the coarse cooling section, the temperature distribution parameters of the inlet of the coarse cooling section are calculated according to formula (2).

[0098] If the preset target final rolling temperature is not within the second preset temperature range, the temperature field parameters at the inlet of the roughing cooling section are calculated using the default temperature, the thickness data at the current sampling point, and the ambient temperature. The calculation formula for the temperature field parameters at the inlet of the roughing cooling section is as follows:

[0099]

[0100] Among them, b R This represents the cooling rate characteristic parameter at the inlet of the coarse cooling section, where H represents the thickness data at the current sampling point. Indicates the default temperature, TAIR Indicates ambient temperature.

[0101] After calculating the cooling rate characteristic parameters of the inlet of the coarse cooling section, the temperature distribution parameters of the inlet of the coarse cooling section are calculated according to formula (2).

[0102] If the temperature data at the current sampling point at the inlet of the roughing cooling section is within the second preset temperature range, and the thickness data at the current sampling point is not within the preset thickness range, then the temperature field parameters at the inlet of the roughing cooling section are calculated using the temperature data at the current sampling point at the inlet of the roughing cooling section, the preset rolling thickness, and the ambient temperature. In one embodiment of this application, the process of calculating the temperature field parameters at the inlet of the roughing cooling section using the temperature data at the current sampling point at the inlet of the roughing cooling section, the preset rolling thickness, and the ambient temperature includes: the preset rolling thickness includes a preset target rolling thickness and a default rolling thickness; if the preset target rolling thickness is within the preset thickness range, the calculation formula for the cooling rate characteristic parameters at the inlet of the roughing cooling section is as follows:

[0103] b R =H TAR *(T FDT -T AIR Equation (16)

[0104] Among them, b R H represents the cooling rate characteristic parameter at the inlet of the coarse cooling section. TAR T represents the preset target rolling thickness. FDT This represents the temperature data at the current sampling point at the inlet of the coarse cooling section, T. AIR Indicates ambient temperature.

[0105]

[0106] Among them, a R b represents the temperature distribution parameter at the inlet of the coarse cooling section. R H represents the cooling rate characteristic parameter at the inlet of the coarse cooling section. TAR The temperature distribution parameter 'a' at the inlet of the roughing and cooling section represents the preset target rolling thickness. R The cooling rate characteristic parameter b at the inlet of the coarse cooling section R Temperature field parameters that make up the inlet of the coarse cooling section.

[0107] In one embodiment of this application, the preset target rolling thickness is set according to the rolling thickness value of different types of strip steel, and the default rolling thickness is the same rolling thickness value set in advance for all types of strip steel.

[0108] If the preset target rolling thickness is not within the preset thickness range, the temperature field parameters at the inlet of the roughing cooling section are calculated using the temperature data at the current sampling point at the inlet of the roughing cooling section, the default rolling thickness, and the ambient temperature. The calculation formula for the cooling rate characteristic parameters at the inlet of the roughing cooling section is as follows:

[0109] b R =H DEF *(T FDT -T AIR Equation (18)

[0110] Among them, b R H represents the cooling rate characteristic parameter at the inlet of the coarse cooling section. DEF Indicates the default rolling thickness, T FDT This represents the temperature data at the current sampling point at the inlet of the coarse cooling section, T. AIR Indicates ambient temperature.

[0111]

[0112] Among them, a R b represents the temperature distribution parameter at the inlet of the coarse cooling section. R H represents the cooling rate characteristic parameter at the inlet of the coarse cooling section. DEF This indicates the default rolling thickness, and the temperature distribution parameter 'a' at the inlet of the roughing and cooling section. R The cooling rate characteristic parameter b at the inlet of the coarse cooling section R Temperature field parameters that make up the inlet of the coarse cooling section.

[0113] If the temperature data at the current sampling point at the inlet of the roughing cooling section is not within the second preset temperature range, and the thickness data at the current sampling point is not within the preset thickness range, then the temperature field parameters at the inlet of the roughing cooling section are calculated using the preset final rolling temperature, preset rolling thickness, and ambient temperature. In one embodiment of this application, the process of calculating the temperature field parameters at the inlet of the roughing cooling section using the preset final rolling temperature, preset rolling thickness, and ambient temperature includes: if the preset target final rolling temperature is within the second preset temperature range and the preset target rolling thickness is within the preset thickness range, then the calculation formula for the cooling rate characteristic parameters at the inlet of the roughing cooling section is as follows:

[0114]

[0115] Among them, b R H represents the cooling rate characteristic parameter at the inlet of the coarse cooling section. TAR Indicates the preset target rolling thickness. T represents the preset target final rolling temperature. AIR This represents the ambient temperature. The formula for calculating the temperature distribution parameters at the inlet of the rough cooling section is as follows:

[0116]

[0117] Among them, a R b represents the temperature distribution parameter at the inlet of the coarse cooling section. R H represents the cooling rate characteristic parameter at the inlet of the coarse cooling section.TAR The temperature distribution parameter 'a' at the inlet of the roughing and cooling section represents the preset target rolling thickness. R The cooling rate characteristic parameter b at the inlet of the coarse cooling section R Temperature field parameters that make up the inlet of the coarse cooling section.

[0118] If the preset target final rolling temperature is not within the second preset temperature range and the preset target rolling thickness is within the preset thickness range, then the preset target final rolling temperature is replaced by the default temperature. Based on the replaced preset target final rolling temperature, preset target rolling thickness, ambient temperature and formula (20), the cooling rate characteristic parameters of the roughing section inlet are calculated. Based on the calculated cooling rate characteristic parameters of the roughing section inlet, the preset target rolling thickness and formula (21), the temperature distribution parameters of the roughing section inlet are calculated.

[0119] If the preset target final rolling temperature is within the second preset temperature range and the preset target rolling thickness is not within the preset thickness range, then the preset target rolling thickness is replaced by the default rolling thickness. Based on the replaced preset target rolling thickness, the preset target final rolling temperature, the ambient temperature and formula (20), the cooling rate characteristic parameters of the inlet of the roughing section are calculated. Based on the calculated cooling rate characteristic parameters of the inlet of the roughing section, the replaced preset target rolling thickness and formula (21), the temperature distribution parameters of the inlet of the roughing section are calculated.

[0120] If the preset final rolling temperature is not within the second preset temperature range and the preset target rolling thickness is not within the preset thickness range, then the preset target final rolling temperature is replaced by the default temperature and the preset target rolling thickness is replaced by the default rolling thickness. Based on the replaced preset target final rolling temperature, the replaced preset target rolling thickness, the ambient temperature and formula (20), the cooling rate characteristic parameters of the inlet of the roughing section are calculated. Based on the calculated cooling rate characteristic parameters of the inlet of the roughing section, the replaced preset target rolling thickness and formula (21), the temperature distribution parameters of the inlet of the roughing section are calculated.

[0121] In one embodiment of this application, before acquiring the temperature data of the current sampling point on the strip at the inlet of the laminar cooling section, the thickness data of the current sampling point on the strip, and the temperature data of the target sampling point on the strip at the inlet of the laminar cooling section, the method for calculating the temperature field in the thickness direction of the strip in the laminar cooling section further includes:

[0122] Temperature data at the inlet of the laminar flow cooling section and thickness data at each sampling point on the strip are collected. In one embodiment of this application, the interval between two adjacent sampling points on the strip is set according to actual conditions.

[0123] Temperature data from a preset number of sampling points, including the current sampling point, are filtered to obtain the temperature data of the current sampling point on the strip at the inlet of the laminar cooling section. In one embodiment of this application, the preset number of sampling points is set according to actual conditions, and the method for filtering the temperature data from the preset number of sampling points including the current sampling point is Kalman filtering, which helps to reduce noise in the temperature data and improve the accuracy of the temperature data of the current sampling point on the strip at the inlet of the laminar cooling section.

[0124] The thickness data of the current sampling point is obtained by filtering the thickness data of a preset number of sampling points containing the current sampling point. In one embodiment of this application, the method of filtering the thickness data of the current sampling point using a Kalman filter is adopted, which helps to reduce noise in the thickness data and improve the accuracy of the thickness data of the current sampling point on the strip.

[0125] Temperature data from a preset number of sampling points containing the target sampling point are filtered to obtain the temperature data of the target sampling point at the inlet of the laminar cooling section on the strip. In one embodiment of this application, the method for filtering the temperature data from a preset number of sampling points containing the target sampling point employs Kalman filtering, which helps to reduce noise in the temperature data and improve the accuracy of the temperature data of the target sampling point at the inlet of the laminar cooling section on the strip.

[0126] Figure 4 This is a flowchart illustrating a method for calculating the temperature field along the thickness direction of the strip in a laminar cooling section, as shown in another exemplary embodiment of this application. Figure 4In this process, the calculation method for the temperature field in the thickness direction of the strip in the laminar cooling section includes: (1) When the strip enters the flying shear stage, the initial temperature field parameters of the strip in the roughing cooling section are determined (the initial temperature field parameters of the roughing cooling section are used when the temperature field parameters at the entrance of the roughing cooling section are missing): The L1 level system tracks the movement of the strip on the roller table. When the strip is subjected to flying shear, it sends a signal to the L2 level system. After receiving the flying shear signal sent by the L1 level system, the L2 level system sends the preset target final rolling temperature and preset target rolling thickness of the strip coil to the laminar cooling L2 level system. After receiving the preset target final rolling temperature and preset target rolling thickness of the strip coil, the L2 level system determines whether the preset target final rolling temperature is within the second preset temperature range and determines whether the preset target rolling thickness is within the second preset temperature range. If the target final rolling temperature is within the second preset temperature range and the target rolling thickness is within the preset thickness range, then the initial temperature field parameters of the roughing and cooling section are calculated using the target final rolling temperature, the target rolling thickness, and the ambient temperature. If the target final rolling temperature is not within the second preset temperature range but the target rolling thickness is within the preset thickness range, then the initial temperature field parameters of the roughing and cooling section are calculated using the default temperature, the target rolling thickness, and the ambient temperature. If the target final rolling temperature is not within the second preset temperature range but the target rolling thickness is not within the preset thickness range, then the initial temperature field parameters of the roughing and cooling section are calculated using the target final rolling temperature, the default rolling thickness, and the ambient temperature. (1) If the target rolling thickness is not within the second preset temperature range, the initial temperature field parameters of the roughing cooling section are calculated using the default temperature, default rolling thickness, and ambient temperature. (2) When the strip exits the finishing mill and reaches the entrance of the roughing cooling section, the temperature field parameters of the entrance of the roughing cooling section are determined and corrected: the temperature measuring instrument collects the temperature data of each sampling point on the upper surface of the strip at the entrance of the roughing cooling section, and the thickness measuring instrument collects the thickness data of each sampling point of the strip. The temperature field parameters of the entrance of the roughing cooling section are calculated based on the temperature data of the current sampling point at the entrance of the roughing cooling section, the thickness data of the current sampling point, and the ambient temperature. The temperature field parameters of the entrance of the roughing cooling section are corrected based on the temperature data of the target sampling point at the entrance of the roughing cooling section to obtain the temperature field parameters of the entrance of the roughing cooling section. (3) Calculate the temperature field of the strip at the thickness direction at the inlet of the coarse cooling section according to the temperature field correction parameters at the inlet of the coarse cooling section and formula (7); (4) Calculate the temperature field at the outlet of the coarse cooling section by simulating the temperature change of the strip in the coarse cooling section through formula (8)-(11); (5) Calculate the temperature field parameters at the outlet of the coarse cooling section according to the temperature field at the outlet of the coarse cooling section and the thickness data of the current sampling point; (6) Determine whether a temperature measuring instrument is set at the inlet of the fine cooling section. If a temperature measuring instrument is set, correct the temperature field parameters at the inlet of the fine cooling section based on the temperature data of the target sampling point at the inlet of the fine cooling section, obtain the temperature field correction parameters at the inlet of the fine cooling section, and substitute the temperature field correction parameters at the inlet of the fine cooling section into formula (7) to obtain the temperature field at the inlet of the fine cooling section;If no temperature measuring instrument is installed, the temperature field parameters at the outlet of the rough cooling section are used as the temperature field parameters at the inlet of the fine cooling section, and the temperature field parameters at the inlet of the fine cooling section are substituted into formula (7) to obtain the temperature field at the inlet of the fine cooling section.

[0127] Figure 5 This is a schematic diagram illustrating the effect of coiling temperature control on a first-thickness strip, as shown in an exemplary embodiment of this application. Figure 5 In the figure, the horizontal axis represents different sampling points on the strip, and the vertical axis represents the temperature data of each sampling point when the strip reaches the coiler after the laminar flow cooling stage. The first thickness strip is 3.5 mm thick, the target coiling temperature of the strip is 640℃, and the acceptable range of the strip coiling temperature is (620℃, 660℃). As can be seen from the figure, the temperature of each sampling point of the strip varies within the target coiling temperature range, thus verifying the effectiveness and accuracy of the temperature field calculation method of this application.

[0128] Figure 6 This is a schematic diagram illustrating the effect of coiling temperature control on a second-thickness strip, as shown in an exemplary embodiment of this application. Figure 6 In the figure, the horizontal axis represents different sampling points on the strip, and the vertical axis represents the temperature data of each sampling point when the strip reaches the coiler after the laminar flow cooling stage. The second thickness strip is 6.02 mm thick, the target coiling temperature of the strip is 640℃, and the acceptable range of the strip coiling temperature is (620℃, 660℃). As can be seen from the figure, the temperature of each sampling point of the strip varies within the target coiling temperature range, thus verifying the effectiveness and accuracy of the temperature field calculation method of this application.

[0129] Figure 7 This is a schematic diagram illustrating the effect of coiling temperature control on a third-thickness strip, as shown in an exemplary embodiment of this application. Figure 7 In the figure, the horizontal axis represents different sampling points on the strip, and the vertical axis represents the temperature data of each sampling point when the strip reaches the coiler after the laminar flow cooling stage. For the third thickness strip, 11.75 mm thick, the target coiling temperature is 640℃, and the acceptable range of the coiling temperature is (620℃, 660℃). As can be seen from the figure, except for the head of the thick specification, the temperature of each sampling point of the strip varies within the target coiling temperature range, thus verifying the effectiveness and accuracy of the temperature field calculation method of this application.

[0130] The following describes an embodiment of the apparatus described in this application, which can be used to execute the method for calculating the temperature field in the thickness direction of the strip in the laminar cooling section as described in the above embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method for calculating the temperature field in the thickness direction of the strip in the laminar cooling section described in the above embodiments of this application.

[0131] Figure 8This is a block diagram illustrating a laminar flow cooling section strip thickness direction temperature field calculation device according to an exemplary embodiment of this application. This device can be applied to... Figure 2 The implementation environment shown is specifically configured in an L2 level system. This device can also be applied to other exemplary implementation environments and specifically configured in other devices. This embodiment does not limit the implementation environment to which the device is applicable.

[0132] like Figure 8 As shown, the exemplary laminar flow cooling section strip thickness direction temperature field calculation device 800 includes:

[0133] The data acquisition module 801 is used to acquire the ambient temperature of the environment where the strip is located, the temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section, the thickness data of the current sampling point on the strip, and the temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section.

[0134] The parameter calculation module 802 is used to calculate the temperature field parameters at the inlet of the laminar flow cooling section based on the temperature data of the current sampling point at the inlet of the laminar flow cooling section, the thickness data of the current sampling point, and the ambient temperature.

[0135] The parameter correction module 803 is used to correct the temperature field parameters at the inlet of the laminar cooling section based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section, so as to obtain the temperature field correction parameters.

[0136] The temperature field determination module 804 is used to determine the temperature field of the strip in the thickness direction at the inlet of the laminar cooling section based on the temperature field correction parameters.

[0137] In one embodiment of this application, the distance between the target sampling point and the current sampling point is less than a preset distance interval threshold. The preset distance interval threshold can be one or several times the distance between two adjacent sampling points; for example, the target sampling point is the previous sampling point of the current sampling point. The temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section includes at least: the temperature data of the current sampling point on the strip at the inlet of the rough cooling section. When temperature measuring instruments are installed at both the inlet of the rough cooling section and the inlet of the fine cooling section, the temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section includes: the temperature data of the current sampling point on the strip at the inlet of the rough cooling section and the temperature data of the current sampling point on the strip at the inlet of the fine cooling section. When a temperature measuring instrument is installed at the inlet of the rough cooling section but not at the inlet of the fine cooling section, the temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section only includes the temperature data of the current sampling point on the strip at the inlet of the rough cooling section. The thickness data of the current sampling point on the strip is the thickness data collected by each sampling point on the strip at the inlet of the rough cooling section. The temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section shall include at least the temperature data of the target sampling point on the strip at the inlet of the rough cooling section. Wherein, when temperature measuring instruments are installed at both the inlet of the rough cooling section and the inlet of the fine cooling section, the temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section shall include both the temperature data of the target sampling point on the strip at the inlet of the rough cooling section and the temperature data of the target sampling point on the strip at the inlet of the fine cooling section. When a temperature measuring instrument is installed at the inlet of the rough cooling section but not at the inlet of the fine cooling section, the temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section shall only include the temperature data of the target sampling point on the strip at the inlet of the rough cooling section.

[0138] In one embodiment of this application, the laminar flow cooling section inlet includes a rough cooling section inlet and a fine cooling section inlet. The process of calculating the temperature field parameters of the laminar flow cooling section inlet based on the temperature data of the current sampling point at the laminar flow cooling section inlet, the thickness data of the current sampling point, and the ambient temperature includes: calculating the temperature field parameters of the rough cooling section inlet based on the temperature data of the current sampling point at the rough cooling section inlet, the thickness data of the current sampling point, and the ambient temperature; the rough cooling section is used to reduce the temperature of the strip steel to a first preset temperature range; the fine cooling section is used to reduce the temperature of the strip steel to a preset coiling temperature range; the lower limit of the first preset temperature range is greater than the upper limit of the preset coiling temperature range; the preset coiling temperature range is used to meet the coiling requirements of the strip steel; the temperature field parameters of the rough cooling section outlet are obtained, and the temperature field parameters of the rough cooling section outlet are used as the temperature field parameters of the fine cooling section inlet.

[0139] In one embodiment of this application, the process of correcting the temperature field parameters at the inlet of the laminar flow cooling section based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar flow cooling section to obtain the temperature field correction parameters includes: if the current inlet is the roughing cooling section inlet, the temperature field parameters at the roughing cooling section inlet are corrected based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the roughing cooling section to obtain the temperature field correction parameters at the roughing cooling section inlet; if the current inlet is the finishing cooling section inlet and a temperature measuring instrument is installed at the finishing cooling section inlet, the temperature field parameters at the finishing cooling section inlet are corrected based on the temperature data of the target sampling point at the finishing cooling section inlet to obtain the temperature field correction parameters at the finishing cooling section inlet; the temperature measuring instrument is used to measure the temperature data of each sampling point on the strip; if the current inlet is the finishing cooling section inlet and no temperature measuring instrument is installed at the finishing cooling section inlet, the temperature field parameters at the finishing cooling section inlet are used as the temperature field correction parameters at the finishing cooling section inlet.

[0140] In one embodiment of this application, after obtaining the temperature field parameters at the inlet of the laminar cooling section, the temperature field parameters at the inlet of the laminar cooling section are corrected by using the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section, so as to obtain the temperature field correction parameters. This makes the temperature field in the thickness direction of the strip at the inlet of the laminar cooling section determined according to the temperature field correction parameters more accurate, and the temperature field calculation method in this application has the characteristics of strong versatility.

[0141] It should be noted that the laminar flow cooling section strip thickness direction temperature field calculation device and the laminar flow cooling section strip thickness direction temperature field calculation method provided in the above embodiments belong to the same concept. The specific operation methods of each module and unit have been described in detail in the method embodiments and will not be repeated here. In practical applications, the laminar flow cooling section strip thickness direction temperature field calculation device provided in the above embodiments can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. This is not a limitation here.

[0142] Embodiments of this application also provide an electronic device, including: one or more processors; and a storage device for storing one or more programs, which, when executed by one or more processors, enable the electronic device to implement the laminar flow cooling section strip thickness direction temperature field calculation method provided in the above embodiments.

[0143] Figure 9 This is a schematic diagram illustrating the structure of a computer system for an electronic device, as shown in an exemplary embodiment of this application. It should be noted that... Figure 9 The computer system 900 of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0144] like Figure 9 As shown, the computer system 900 includes a Central Processing Unit (CPU) 901, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on programs stored in Read-Only Memory (ROM) 902 or programs loaded from storage portion 908 into Random Access Memory (RAM) 903. The RAM 903 also stores various programs and data required for system operation. The CPU 901, ROM 902, and RAM 903 are interconnected via a bus 904. An Input / Output (I / O) interface 905 is also connected to the bus 904.

[0145] The following components are connected to I / O interface 905: an input section 906 including a keyboard, mouse, etc.; an output section 907 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 908 including a hard disk, etc.; and a communication section 909 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 909 performs communication processing via a network such as the Internet. A drive 910 is also connected to I / O interface 905 as needed. Removable media 911, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 910 as needed so that computer programs read from them can be installed into storage section 908 as needed.

[0146] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 909, and / or installed from removable medium 911. When the computer program is executed by central processing unit (CPU) 901, it performs various functions defined in the system of this application.

[0147] Another aspect of this application provides a computer-readable storage medium storing computer-readable instructions that, when executed by a computer's processor, cause the computer to perform the laminar flow cooling section strip thickness direction temperature field calculation method provided in the above embodiments. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not be assembled into the electronic device.

[0148] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), 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 combination thereof. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0149] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A method for calculating the temperature field along the thickness direction of a strip in a laminar flow cooling section, characterized in that, The method includes: The system acquires the ambient temperature of the environment in which the strip is located, the temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section, the thickness data of the current sampling point on the strip, and the temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section; the distance between the target sampling point and the current sampling point is less than a preset distance interval threshold. Based on the temperature data of the current sampling point at the inlet of the laminar flow cooling section, the thickness data of the current sampling point, and the ambient temperature, calculate the temperature field parameters at the inlet of the laminar flow cooling section; Based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section, the temperature field parameters at the inlet of the laminar cooling section are corrected to obtain the temperature field correction parameters. Based on the temperature field correction parameters, the temperature field of the strip in the thickness direction at the inlet of the laminar cooling section is determined.

2. The method for calculating the temperature field in the thickness direction of the strip in the laminar flow cooling section according to claim 1, characterized in that, If the laminar flow cooling section inlet includes a coarse cooling section inlet and a fine cooling section inlet, then the process of calculating the temperature field parameters of the laminar flow cooling section inlet based on the temperature data of the current sampling point at the laminar flow cooling section inlet, the thickness data of the current sampling point, and the ambient temperature includes: Based on the temperature data at the inlet of the roughing cooling section, the thickness data at the current sampling point, and the ambient temperature, the temperature field parameters at the inlet of the roughing cooling section are calculated; the roughing cooling section is used to reduce the temperature of the strip to a first preset temperature range; the finishing cooling section is used to reduce the temperature of the strip to a preset coiling temperature range; the lower limit of the first preset temperature range is greater than the upper limit of the preset coiling temperature range; the preset coiling temperature range is used to meet the coiling requirements of the strip; The temperature field parameters at the outlet of the coarse cooling section are obtained and used as the temperature field parameters at the inlet of the fine cooling section.

3. The method for calculating the temperature field along the thickness direction of the strip in the laminar flow cooling section according to claim 2, characterized in that, The process of correcting the temperature field parameters at the inlet of the laminar cooling section based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section, and obtaining the temperature field correction parameters, includes: If the current inlet is the inlet of the roughing and cooling section, then based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the roughing and cooling section, the temperature field parameters of the inlet of the roughing and cooling section are corrected to obtain the temperature field correction parameters of the inlet of the roughing and cooling section. If the current inlet is the inlet of the cooling section and a temperature measuring instrument is installed at the inlet of the cooling section, then the temperature field parameters of the cooling section inlet are corrected based on the temperature data of the target sampling point at the inlet of the cooling section to obtain the temperature field correction parameters of the cooling section inlet; the temperature measuring instrument is used to measure the temperature data of each sampling point on the strip. If the current inlet is the inlet of the fine cooling section and the temperature measuring instrument is not installed at the inlet of the fine cooling section, then the temperature field parameters of the fine cooling section inlet will be used as the temperature field correction parameters of the fine cooling section inlet.

4. The method for calculating the temperature field along the thickness direction of the strip in the laminar flow cooling section according to claim 3, characterized in that, Before obtaining the temperature field parameters at the outlet of the coarse cooling section, the method further includes: Obtain the temperature distribution equation of the strip in the thickness direction, the equation of the change of internal heat of the strip during cooling, the equation of the heat flow of the strip on the upper surface of the strip in the roughing cooling section, and the equation of the heat flow of the strip on the lower surface of the strip in the roughing cooling section. The temperature field correction parameters at the inlet of the coarse cooling section are input into the temperature distribution equation to obtain the temperature distribution function of the strip in the thickness direction; The temperature field at the outlet of the coarse cooling section is obtained by combining and solving the temperature distribution function, the variation equation, the upper surface heat flow equation, and the lower surface heat flow equation. The temperature field parameters of the coarse cooling section outlet are calculated based on the temperature field at the outlet of the coarse cooling section and the thickness data at the current sampling point.

5. The method for calculating the temperature field along the thickness direction of the strip in the laminar flow cooling section according to claim 2, characterized in that, The process of calculating the temperature field parameters at the inlet of the coarse cooling section based on the temperature data of the current sampling point at the inlet of the coarse cooling section, the thickness data of the current sampling point, and the ambient temperature includes: If the temperature data of the current sampling point at the inlet of the coarse cooling section is within the second preset temperature range, and the thickness data of the current sampling point is within the preset thickness range, then the temperature field parameters of the inlet of the coarse cooling section are calculated using the temperature data of the current sampling point at the inlet of the coarse cooling section, the thickness data of the current sampling point, and the ambient temperature. If the temperature data of the current sampling point at the inlet of the roughing and cooling section is not within the second preset temperature range, and the thickness data of the current sampling point is within the preset thickness range, then the temperature field parameters at the inlet of the roughing and cooling section are calculated using the preset final rolling temperature, the thickness data of the current sampling point, and the ambient temperature. If the temperature data of the current sampling point at the inlet of the roughing and cooling section is within the second preset temperature range, and the thickness data of the current sampling point is not within the preset thickness range, then the temperature field parameters of the inlet of the roughing and cooling section are calculated using the temperature data of the current sampling point at the inlet of the roughing and cooling section, the preset rolling thickness, and the ambient temperature. If the temperature data of the current sampling point at the inlet of the roughing and cooling section is not within the second preset temperature range, and the thickness data of the current sampling point is not within the preset thickness range, then the temperature field parameters at the inlet of the roughing and cooling section are calculated using the preset final rolling temperature, the preset rolling thickness, and the ambient temperature.

6. The method for calculating the temperature field along the thickness direction of the strip in the laminar flow cooling section according to claim 2, characterized in that, The expressions for the temperature field parameters at the inlet of the coarse cooling section include: b R =H*(T FDT -T AIR ), Among them, b R This represents the cooling rate characteristic parameter at the inlet of the coarse cooling section, where H represents the thickness data at the current sampling point, and T represents the thickness characteristic parameter. FDT This represents the temperature data at the current sampling point at the inlet of the coarse cooling section, T. AiR Indicates ambient temperature; Among them, a R b represents the temperature distribution parameter at the inlet of the coarse cooling section. R The parameters representing the cooling rate characteristics at the inlet of the coarse cooling section are: H represents the thickness data at the current sampling point, and a represents the temperature distribution parameter at the inlet of the coarse cooling section. R The cooling rate characteristic parameter b at the inlet of the coarse cooling section R The temperature field parameters that make up the inlet of the coarse cooling section.

7. The method for calculating the temperature field in the thickness direction of the strip in the laminar cooling section according to any one of claims 1-5, characterized in that, Before acquiring the temperature data of the current sampling point on the strip at the inlet of the laminar cooling section, the thickness data of the current sampling point on the strip, and the temperature data of the target sampling point on the strip at the inlet of the laminar cooling section, the method further includes: Temperature data and thickness data of each sampling point on the strip at the inlet of the laminar flow cooling section are collected. The temperature data of a preset number of sampling points containing the current sampling point are filtered to obtain the temperature data of the current sampling point on the strip at the inlet of the laminar cooling section. The thickness data of the current sampling point is filtered to obtain the thickness data of the current sampling point on the strip. The temperature data of a preset number of sampling points containing the target sampling point are filtered to obtain the temperature data of the target sampling point on the strip at the inlet of the laminar cooling section.

8. A device for calculating the temperature field along the thickness direction of a strip in a laminar flow cooling section, characterized in that, include: The data acquisition module is used to acquire the ambient temperature of the environment in which the strip is located, the temperature data of the current sampling point on the strip at the inlet of the laminar flow cooling section, the thickness data of the current sampling point on the strip, and the temperature data of the target sampling point on the strip at the inlet of the laminar flow cooling section; the distance between the target sampling point and the current sampling point is less than a preset distance interval threshold. The parameter calculation module is used to calculate the temperature field parameters at the inlet of the laminar flow cooling section based on the temperature data of the current sampling point at the inlet of the laminar flow cooling section, the thickness data of the current sampling point, and the ambient temperature. The parameter correction module is used to correct the temperature field parameters at the inlet of the laminar cooling section based on the preset final rolling temperature or the temperature data of the target sampling point at the inlet of the laminar cooling section, so as to obtain the temperature field correction parameters. The temperature field determination module is used to determine the temperature field of the strip in the thickness direction at the inlet of the laminar cooling section based on the temperature field correction parameters.

9. An electronic device, characterized in that, include: One or more processors; A storage device for storing one or more programs, which, when executed by one or more processors, cause the electronic device to implement the method for calculating the temperature field in the thickness direction of the strip in the laminar flow cooling section as described in any one of claims 1 to 7.

10. A readable storage medium, characterized in that, It stores computer-readable instructions, which, when executed by the computer's processor, cause the computer to perform the method for calculating the temperature field in the thickness direction of the strip in the laminar cooling section as described in any one of claims 1 to 7.

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