Control method, device and equipment for electromagnetic stirring in continuous casting and storage medium

Abstract

The embodiment of the invention discloses a control method, device and equipment for electromagnetic stirring in continuous casting and a storage medium, and belongs to the technical field of continuous casting. The method comprises the steps that in the unstable process of continuous casting production, temperature information of a casting blank is determined based on technological parameters of continuous casting production, the unstable process refers to a transition process of a first process parameter in the process parameters from one stable state to another stable state; based on the temperature information, stirring parameters of the electromagnetic stirrer for the casting blank are determined; an electromagnetic stirrer is controlled to stir the casting blank based on the stirring parameters, and solidification parameters corresponding to the stirring positions are updated; under the condition that the updated solidification parameters meet the conditions, the current intensity and the electromagnetic frequency are adjusted based on the updated solidification parameters; and under the condition that the updated solidification parameter does not meet the condition, updating the stirring parameter based on the updated process parameter. The stirring capacity of the electromagnetic stirrer is improved, and the final product quality can be improved.

Description

Technical Field

[0001] This application relates to the field of continuous casting technology, and in particular to a control method, apparatus, equipment and storage medium for electromagnetic stirring in continuous casting. Background Technology

[0002] With social progress and technological development, continuous casting technology has been increasingly widely used in metal manufacturing processes. For example, it is used to manufacture copper or copper alloys through horizontal continuous casting or upward continuous casting, aluminum or aluminum alloys through continuous casting and rolling, and zinc / zinc alloys through horizontal continuous casting, and so on.

[0003] During continuous casting, the billet needs to be stirred. In related technologies, when a certain process parameter (such as the billet pulling speed) changes during continuous casting production, the process parameter is allowed to change completely. After the process parameter changes and enters a stable state, the electromagnetic stirrer is started to stir the billet electromagnetically.

[0004] However, in the aforementioned related technologies, electromagnetic stirring of the billet is only performed when the process parameters are stable, resulting in low final product quality. Summary of the Invention

[0005] This application provides a control method, apparatus, equipment, and storage medium for electromagnetic stirring in continuous casting, which can improve the stirring ability of the electromagnetic stirrer for the cast billet, and is beneficial to improving the final product quality. The technical solution is as follows: On one hand, embodiments of this application provide a method for controlling and detecting electromagnetic stirring in continuous casting, the method comprising: In the unstable process of continuous casting production, the temperature information of the billet is determined based on the process parameters of continuous casting production; wherein, the unstable process refers to the transition process of the first process parameter in the process parameters from one stable state to another stable state, and the temperature information is used to indicate the temperature distribution of the billet; Based on the temperature information, the stirring parameters of the electromagnetic stirrer for the billet are determined; wherein, the stirring parameters include stirring position, current intensity and electromagnetic frequency; Based on the stirring position, the electromagnetic stirrer is controlled to move to the corresponding position, and at the position, the electromagnetic stirrer is controlled to stir the billet with the current intensity and the electromagnetic frequency; and the process parameters are updated during the stirring process. Based on the updated process parameters, the solidification parameters corresponding to the stirring position are updated; If the updated solidification parameters meet the conditions, the current intensity and the electromagnetic frequency are adjusted based on the updated solidification parameters; If the updated solidification parameters do not meet the conditions, the stirring parameters are updated based on the updated process parameters.

[0006] On the other hand, embodiments of this application provide a control device for electromagnetic stirring in continuous casting. This control device is used to implement the control method for electromagnetic stirring in continuous casting as described above. The device includes: The temperature acquisition module is used to determine the temperature information of the billet based on the process parameters of continuous casting production during the unstable process of continuous casting production; wherein, the unstable process refers to the transition process of the first process parameter in the process parameters from one stable state to another stable state, and the temperature information is used to indicate the temperature distribution of the billet. The parameter determination module is used to determine the stirring parameters of the electromagnetic stirrer for the billet based on the temperature information; wherein the stirring parameters include stirring position, current intensity and electromagnetic frequency; A stirring control module is used to control the electromagnetic stirrer to move to the corresponding position based on the stirring position, and to control the electromagnetic stirrer to stir the billet with the current intensity and the electromagnetic frequency at the position; and to update the process parameters during the stirring process. The change determination module is used to update the solidification parameters corresponding to the stirring position based on the updated process parameters; The parameter adjustment module is used to adjust the current intensity and the electromagnetic frequency based on the updated solidification parameters, provided that the updated solidification parameters meet the conditions. The parameter adjustment module is further configured to update the stirring parameters based on the updated process parameters if the updated solidification parameters do not meet the conditions.

[0007] In another aspect, embodiments of this application provide a computer device, which includes a processor and a memory. The memory stores a computer program, which is loaded and executed by the processor to implement the above-described control method for electromagnetic stirring in continuous casting.

[0008] In another aspect, embodiments of this application provide a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described control method for electromagnetic stirring in continuous casting.

[0009] In another aspect, embodiments of this application provide a computer program product that, when the computer program product is run, causes a computer device to execute the above-described control method for electromagnetic stirring in continuous casting.

[0010] Compared with the prior art, the technical solution provided in this application can bring the following beneficial effects: (1) By determining the temperature distribution of the billet based on the process parameters of continuous casting production during the unstable process of continuous casting, the stirring position, current intensity and electromagnetic frequency of the electromagnetic stirrer for the billet are determined. That is, the optimal stirring parameters relative to the billet are determined based on the temperature distribution of the billet during the unstable process of continuous casting production. Compared with the related technology that only electromagnetic stirring of the billet is performed when the process parameters are stable, the stirring ability of the electromagnetic stirrer for the billet is improved, which is conducive to the breaking of dendrite structure and the increase of equiaxed crystal ratio, and thus conducive to improving the final product quality. (2) During the process of stirring the billet by the electromagnetic stirrer, on the one hand, the stirring parameters are updated based on the updated process parameters, so that the electromagnetic stirrer can flexibly update the stirring parameters during the stirring process, which further improves the stirring ability of the electromagnetic stirrer for the billet. On the other hand, considering that frequent changes in the stirring position of the electromagnetic stirrer may increase the maintenance cost of the equipment, the solidification parameters corresponding to the stirring position are tracked in real time. When the updated solidification parameters meet the conditions, only the current intensity and electromagnetic frequency are adjusted. When the updated solidification parameters do not meet the conditions, the stirring position is updated. This is conducive to improving the process stability to reduce the risk of slag entrapment, minimizing the mechanical wear caused by frequent movement of the electromagnetic stirrer, and thus reducing the equipment maintenance cost. (3) In the continuous casting process, the current intensity affects the stirring force of the stirring process, and the electromagnetic frequency affects the penetration depth of the stirring process. This application determines the optimal stirring parameters of the electromagnetic stirrer for the billet by means of three aspects: stirring position, stirring force and penetration depth during stirring. This is conducive to improving the overall accuracy of the stirring parameters, thereby improving the stirring effect in the continuous casting process and improving the final product quality. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of an electromagnetic stirring control system in continuous casting provided in one embodiment of this application; Figure 2 This is a flowchart of a control method for electromagnetic stirring in continuous casting provided in one embodiment of this application; Figure 3 This is a flowchart of a control method for electromagnetic stirring in continuous casting provided in another embodiment of this application; Figure 4 This is a flowchart of a control method for electromagnetic stirring in continuous casting provided in another embodiment of this application; Figure 5 This is a block diagram of a control device for electromagnetic stirring in continuous casting provided in one embodiment of this application; Figure 6 This is a block diagram of a control device for electromagnetic stirring in continuous casting provided in another embodiment of this application. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to specific embodiments: Please refer to Figure 1 The diagram illustrates a schematic of a control system for electromagnetic stirring in continuous casting according to an embodiment of this application. This control system may include: a continuous casting machine 10, an electromagnetic stirrer 20, and a computer device 30.

[0013] The continuous casting machine 10 is used to continuously cast molten billet into billets with a certain cross-sectional shape and size. For example, such as... Figure 1 As shown, the molten billet (the shaded part in the figure) is injected into the crystallizer 12 through the container 11 and the tundish 12. The crystallizer 13 and the secondary cooler 14 cool the molten billet, causing a billet shell to form on the outer ring (the black part in the figure). The roller 15 pulls the billet (including the billet shell and the unsolidified molten billet). The crystallizer 13 and the secondary cooler 14 cool the molten billet using circulating cooling water. It should be noted that the above description of the continuous casting machine is only exemplary and explanatory. In practical applications, the continuous casting machine 10 can be a vertical continuous casting machine, a vertical-bending continuous casting machine, a continuous casting machine with a straight section arc, an arc continuous casting machine, a multi-radius elliptical continuous casting machine, or a horizontal continuous casting machine, etc. This application embodiment does not limit this. For example, in the production of copper and copper alloys, the molten billet can be called molten copper; in the production of aluminum and aluminum alloys, the molten billet can be called molten aluminum; in the production of zinc and zinc alloys, the molten billet can be called molten zinc; and in the production of steel, the molten billet can be called molten steel.

[0014] The electromagnetic stirrer 20 is used to stir the billet. Optionally, the continuous casting machine 10 has at least one electromagnetic stirrer 20. Optionally, the electromagnetic stirrer 20 is a movable device; or, the electromagnetic stirrer 20 is a fixed device that cannot be moved. For example, the continuous casting machine 10 has one movable electromagnetic stirrer 20. During the continuous casting process, if the stirring position changes, the electromagnetic stirrer 20 is moved to the corresponding stirring position to stir the billet in the continuous casting machine 10; or, the continuous casting machine has multiple fixed electromagnetic stirrers 20. During the continuous casting process, if the stirring position changes, the electromagnetic stirrer 20 closest to the stirring position is activated to stir the billet in the continuous casting machine 10.

[0015] Computer device 30 is used to control the stirring parameters of electromagnetic stirrer 20 for the cast billet. Exemplarily, computer device 30 can be an electronic device such as a mobile phone, tablet, wearable device, backend server, server cluster, or PC (Personal Computer), and this application embodiment is not limited to this. In this application embodiment, the stirring parameters of electromagnetic stirrer 20 are not fixed. During the continuous casting production process of continuous casting machine 10, in the unstable process of continuous casting production, computer device 30 determines the temperature information of the cast billet based on the process parameters of continuous casting production, and then determines the stirring parameters of electromagnetic stirrer 20 for the cast billet based on the temperature information, thereby controlling electromagnetic stirrer 20 to stir the cast billet based on the stirring parameters. The stirring information includes stirring position, current intensity, and electromagnetic frequency. In this embodiment, when the electromagnetic stirrer 20 stirs the billet, the computer updates the aforementioned process parameters and, based on the updated process parameters, updates the solidification parameters of the billet at the stirring position. If the updated solidification parameters meet the conditions, the current intensity and electromagnetic frequency are adjusted based on the solidification parameters corresponding to the stirring position. If the updated solidification parameters do not meet the conditions, the stirring parameters (including stirring position, current intensity, and electromagnetic frequency) are adjusted based on the updated process parameters. Optionally, in this embodiment, sensors are provided in the continuous casting machine 10 to obtain the process parameters for continuous casting production.

[0016] Optionally, the continuous casting machine 10, the electromagnetic stirrer 20, and the computer equipment 30 communicate via a network.

[0017] Please refer to Figure 2 The diagram illustrates a flowchart of a control method for electromagnetic stirring in continuous casting according to an embodiment of this application. This method is applied to... Figure 1 The computer device 30 in the control system of the electromagnetic stirring in continuous casting is shown. The method may include the following steps (201-206): Step 201: During the unstable process of continuous casting production, determine the temperature information of the billet based on the process parameters of continuous casting production.

[0018] In this embodiment of the application, when controlling electromagnetic stirring in continuous casting, during the unstable process of continuous casting production, the computer equipment determines the temperature information of the billet based on the process parameters of continuous casting production. The unstable process refers to the transition of the first process parameter from one stable state to another.

[0019] Process parameters refer to the basic parameters required for continuous casting and the variable parameters generated during the continuous casting process. Optionally, in this embodiment, during the unstable process of continuous casting production, computer equipment acquires the process parameters of continuous casting production. Optionally, the process parameters include a first process parameter, a second process parameter, and a third process parameter. The first process parameter refers to a parameter whose stable state changes during continuous casting production, such as changing from one stable state to another; the second process parameter refers to a parameter that changes dynamically throughout the continuous casting production process; and the third process parameter refers to a parameter that remains statically unchanged during the continuous casting production process. For example, the first process parameter includes, but is not limited to, at least one of the following: billet casting speed, crystallizer cooling intensity, secondary cooling water distribution, etc., which are not limited in this embodiment; the second process parameter includes, but is not limited to, at least one of the following: tundish temperature distribution information, composition of the molten billet produced in continuous casting, superheat of the molten billet, thermal conductivity of the molten billet, etc., which are not limited in this embodiment; the third process parameter includes, but is not limited to, at least one of the following: molten billet cross-sectional dimensions, etc., which are not limited in this embodiment.

[0020] Intermediate baffle temperature distribution information refers to the intermediate baffle (e.g., ... Figure 1 The temperature changes of the molten billet in the tundish 12) at different locations and at different times; for example, the computer equipment obtains the temperature distribution information of the tundish by infrared thermometry.

[0021] The composition of the molten billet produced by continuous casting refers to the grade or type of metal (such as copper and copper alloys, aluminum and aluminum alloys, zinc and zinc alloys, steel, etc.) in continuous casting; for example, computer equipment obtains the composition of the molten billet produced by continuous casting through metal information preset by the staff.

[0022] The casting speed refers to the speed at which the billet is pulled from the crystallizer (e.g., the casting speed). Figure 1 The speed at which the billet is pulled out in the crystallizer 13) is exemplarily obtained by computer equipment through parameters preset by the operator for the continuous casting machine. Taking the billet speed as an example, one stable state of the billet speed is 0.8 m / min, and another stable state is 1.1 m / min. The process of the billet speed transitioning from 0.8 m / min to 1.1 m / min is the unstable process of continuous casting production.

[0023] The cross-sectional dimensions of a billet refer to the geometric shape and specific dimensional parameters of the billet pulled from the crystallizer on its cross-section. For example, computer equipment obtains the cross-sectional dimensions of a billet through laser ranging, visual inspection, infrared contour scanning, or roll seam measurement.

[0024] The superheat of the molten billet refers to the difference between the actual temperature of the molten billet and its liquidus temperature; for example, computer equipment obtains the superheat of the molten billet through an infrared thermometer.

[0025] The thermal conductivity of molten billet is used to characterize the ability of molten billet to conduct heat; for example, a computer device obtains the thermal conductivity of molten billet through a steady-state method.

[0026] Crystallizer cooling intensity refers to the ability to reduce the temperature of the crystallizer body; for example, computer equipment obtains crystallizer cooling intensity through the cooling water parameter method.

[0027] Secondary cooling water distribution is used to indicate the secondary cooler (e.g., Figure 1 The distribution of cooling water volume and cooling intensity in the secondary cooler 14) is shown; for example, the computer equipment obtains the secondary cooler water volume distribution by the specific water volume method.

[0028] Temperature information is used to indicate the temperature distribution of the cast billet. Optionally, in this embodiment, after obtaining the process parameters of continuous casting, the computer device determines the temperature at different locations of the cast billet based on the process parameters, thereby determining the temperature information of the cast billet. Exemplarily, the computer device determines the temperature information of the cast billet based on the process parameters of continuous casting using a pre-trained temperature field distribution model; exemplarily, the computer device activates the temperature field distribution model via a cloud supercomputing system to determine the temperature information of the cast billet.

[0029] It should be noted that in the unstable process of continuous casting production, the number of first process parameters in the transition process can be one or more, and the embodiments of this application do not limit this.

[0030] Step 202: Based on the temperature information, determine the stirring parameters of the electromagnetic stirrer for the billet.

[0031] In this embodiment of the application, after obtaining the aforementioned temperature information, the computer device determines the stirring parameters of the electromagnetic stirrer for the cast billet based on the temperature information. These stirring parameters include the stirring position, current intensity, and electromagnetic frequency.

[0032] The stirring position is used to indicate the location of the electromagnetic stirrer used to agitate the billet. Optionally, after acquiring temperature information, the computer device determines the solidification parameter distribution of the billet based on the temperature information. This solidification parameter distribution indicates the solidification parameters at different locations in the billet. Further, based on the solidification parameter distribution, the stirring position is determined with the billet location where the solidification parameters meet the conditions as a reference. Exemplarily, the solidification parameters are the percentage of solidified thickness of the billet shell, the percentage of solidified area of ​​the billet shell, or the solid fraction at the center of the billet, etc., and this application embodiment does not limit this.

[0033] Current intensity refers to the intensity of the current used by the electromagnetic stirrer to stir the billet. During continuous casting, the current intensity affects the stirring force. For example, the current intensity ranges from 100 to 800 A (amperes). Electromagnetic frequency refers to the frequency of the electromagnetic field used by the electromagnetic stirrer to stir the billet. During continuous casting, the electromagnetic frequency affects the penetration depth of the stirring process. For example, the electromagnetic frequency ranges from 3 to 8 Hz (hertz). Optionally, after obtaining the stirring position, the computer device obtains the solidification parameters corresponding to the stirring position, and then determines the current intensity and electromagnetic frequency corresponding to that stirring position based on a pre-stored correspondence. This correspondence includes a first correspondence and a second correspondence. The first correspondence indicates the correspondence between the solidification parameters and the current intensity, and the second correspondence indicates the correspondence between the solidification parameters and the electromagnetic frequency. It should be noted that the above description of the ranges of current intensity and electromagnetic frequency is merely exemplary. Operators can flexibly set and adjust the ranges of current intensity and electromagnetic frequency according to actual conditions, and this application embodiment does not limit this.

[0034] In one possible implementation, the electromagnetic stirrer is a movable device. Optionally, after the computer device determines the solidification parameter distribution of the billet based on temperature information, it directly determines the billet position that meets the conditions as the stirring position within the billet, and then determines the current intensity and electromagnetic frequency based on the solidification parameters corresponding to the stirring position and in conjunction with pre-stored correspondences.

[0035] In another possible implementation, the electromagnetic stirrer is a fixed, non-movable device, and the continuous casting machine corresponds to more than one electromagnetic stirrer. For example, in practical applications, if the operator does not promptly replace the fixed electromagnetic stirrer with a movable one (or, considering the high cost of disassembling the machine to replace the fixed electromagnetic stirrer with a movable one), the billet can be stirred based on the existing working scenario and the electromagnetic stirring control method for continuous casting described in this application. Optionally, after the computer equipment determines the solidification parameter distribution of the billet based on temperature information, it identifies the billet position that meets the conditions as a calibration position, then identifies the location of the electromagnetic stirrer closest to this calibration position as the stirring position, and determines the current intensity and electromagnetic frequency based on the solidification parameters corresponding to this stirring position and a pre-stored correspondence.

[0036] Step 203: Based on the stirring position, control the electromagnetic stirrer to move to the corresponding position, and control the electromagnetic stirrer at that position to stir the billet with current intensity and electromagnetic frequency; and update the process parameters during the stirring process.

[0037] Optionally, in this embodiment of the application, after obtaining the above-mentioned stirring parameters, the electromagnetic stirrer is controlled to stir the billet based on the stirring parameters; and the above-mentioned process parameters are updated during the stirring process.

[0038] In one possible implementation, the electromagnetic stirrer is a movable device. Optionally, a computer device controls the electromagnetic stirrer to move to a corresponding position based on the stirring position in the stirring parameters, and then controls the electromagnetic stirrer at that position to stir the billet with the current intensity and electromagnetic frequency in the stirring parameters, and updates the process parameters during the stirring process.

[0039] In another possible implementation, the electromagnetic stirrer is a fixed, non-movable device, and the continuous casting machine corresponds to more than one electromagnetic stirrer. For example, in practical applications, if the operator does not promptly replace the fixed electromagnetic stirrer with a movable one (or, considering the high cost of disassembling the machine to replace the fixed electromagnetic stirrer with a movable one), the billet can be stirred based on the existing working scenario and the electromagnetic stirring control method for continuous casting described in this application. Optionally, the computer device controls the electromagnetic stirrer at the corresponding position based on the stirring position in the stirring parameters, thereby controlling the electromagnetic stirrer to stir the billet with the current intensity and electromagnetic frequency specified in the stirring parameters, and updating the process parameters during the stirring process.

[0040] Optionally, during the stirring of the billet by the electromagnetic stirrer, the monitoring device monitors the stirring situation in real time and issues an early warning message when abnormal stirring is detected. This early warning message is used to remind the operator that the electromagnetic stirrer is malfunctioning. For example, abnormal stirring occurs when the resistance coefficient detected during stirring exceeds a threshold. This threshold can be any value, and the operator can flexibly set and adjust it according to the actual situation; this embodiment does not limit this. Optionally, in this embodiment, upon detecting the early warning message, the computer device obtains the current stirring position of the electromagnetic stirrer; further, based on the changes in current intensity and electromagnetic frequency when the electromagnetic stirrer is stationary at the current stirring position, it determines the stirring area corresponding to the current stirring position; then, it determines that the quality grade corresponding to the stirring area has decreased. The stirring area refers to the area of ​​action of the electromagnetic stirrer. Optionally, the monitoring device and the computer device are the same device; or, the monitoring device and the computer device are different devices; this embodiment does not limit this.

[0041] Step 204: Based on the updated process parameters, update the solidification parameters corresponding to the stirring position.

[0042] In this embodiment of the application, after updating the above-mentioned process parameters, the computer device updates the solidification parameters corresponding to the stirring position based on the updated process parameters. The solidification parameters corresponding to the stirring position refer to the solidification parameters of the cast billet at the aforementioned stirring position.

[0043] Optionally, during the process of stirring the billet with an electromagnetic stirrer, the computer equipment updates the process parameters in real time and detects the solidification parameters at the stirring position in real time based on the updated process parameters to obtain the updated solidification parameters.

[0044] Optionally, after obtaining the updated solidification parameters, the computer device determines whether the updated solidification parameters meet the conditions, and then determines the adjustment method for the above-mentioned stirring parameters. Optionally, different types of solidification parameters correspond to different conditions. For example, if the solidification parameter type is the percentage of solidification thickness of the billet shell, the condition is that the percentage of solidification thickness of the billet shell is within 40% to 60%; if the solidification parameter type is the percentage of solidification area of ​​the billet shell, the condition is that the percentage of solidification area of ​​the billet shell is within 60% to 80%; if the solidification parameter type is the solid fraction at the center of the billet, the condition is that the solid fraction at the center of the billet is within 0% to 40%.

[0045] Step 205: If the updated solidification parameters meet the conditions, adjust the current intensity and electromagnetic frequency based on the updated solidification parameters.

[0046] In this embodiment of the application, after updating the solidification parameters corresponding to the stirring position, if the updated solidification parameters meet the conditions, the computer device adjusts the current intensity and electromagnetic frequency based on the updated solidification parameters.

[0047] Optionally, if the updated solidification parameters meet the conditions, the computer equipment determines that although the updated solidification parameters have changed, the above-mentioned stirring position is still within the stirring range. Further, keeping the stirring position unchanged, the current intensity and electromagnetic frequency are adjusted based on the updated solidification parameters. Then, at the original stirring position, the electromagnetic stirrer is controlled to stir the billet with the adjusted current intensity and adjusted electromagnetic frequency.

[0048] Step 206: If the updated solidification parameters do not meet the conditions, update the stirring parameters based on the updated process parameters.

[0049] In this embodiment of the application, after updating the solidification parameters corresponding to the stirring position, if the updated solidification parameters do not meet the above conditions, the computer device updates the stirring parameters based on the updated process parameters.

[0050] Optionally, if the updated solidification parameters do not meet the conditions, the computer determines that the updated solidification parameters have changed and the aforementioned stirring position is no longer within the stirring range. Further, the computer updates the stirring parameters based on the updated process parameters to obtain updated stirring parameters. These updated stirring parameters include the updated stirring position, updated current intensity, and updated electromagnetic frequency. Then, the computer controls the electromagnetic stirrer to stir the billet based on the updated stirring parameters.

[0051] In summary, the technical solution provided in this application determines the temperature distribution of the billet based on the process parameters during the unstable process of continuous casting production. This allows for the determination of the stirring position, current intensity, and electromagnetic frequency of the electromagnetic stirrer for the billet. In other words, the optimal stirring parameters are determined relative to the billet based on its temperature distribution during the unstable process. Compared to related technologies where electromagnetic stirring of the billet is only performed when process parameters are stable, this improves the stirring capability of the electromagnetic stirrer for the billet, which is beneficial for breaking down dendrite structures and increasing the equiaxed crystal ratio, thereby improving the final product quality. Furthermore, during the stirring process, the stirring parameters are updated based on the updated process parameters, allowing for flexible updates during the stirring process and further enhancing the stirring capability of the electromagnetic stirrer for the billet. On the other hand, considering that frequent changes to the stirring position of the electromagnetic stirrer may increase equipment maintenance costs, real-time tracking of the solidification parameters corresponding to the stirring position is beneficial. If the updated solidification parameters meet the requirements, only the current intensity and electromagnetic frequency are adjusted. If the updated solidification parameters do not meet the requirements, the stirring position is updated. This helps improve process stability, reduce the risk of slag entrapment, minimize mechanical wear caused by frequent movement of the electromagnetic stirrer, and thus reduce equipment maintenance costs. Moreover, in the continuous casting process, the current intensity affects the stirring force, and the electromagnetic frequency affects the penetration depth. This application determines the optimal stirring parameters for the electromagnetic stirrer for the billet by considering the stirring position, stirring force, and penetration depth during stirring. This helps improve the overall accuracy of the stirring parameters, thereby improving the stirring effect in the continuous casting process and ultimately improving the quality of the final product.

[0052] Furthermore, upon detecting a warning message, the corresponding stirring area is determined based on the current stirring position of the electromagnetic stirrer, and the quality grade corresponding to that stirring area is reduced. The casting product is positioned using the stirring position as a reference. When a warning message is detected, the quality grade of the product in the corresponding stirring area is reduced, thus achieving product quality grading. Moreover, considering that the electromagnetic stirrer may pause at the current stirring position, the corresponding stirring area is determined based on the changes in current intensity and electromagnetic frequency when the electromagnetic stirrer pauses at the current stirring position. That is, the changes in current intensity and electromagnetic frequency are taken into account when determining the stirring area, which improves the accuracy of the determined stirring area and thus improves the accuracy of quality grading.

[0053] In addition, the electromagnetic stirring control method in continuous casting provided in this application is also applicable to the working scenario of fixed electromagnetic stirrers. That is, the method provided in this application has low scenario requirements, strong adaptability, and does not require forced disassembly and replacement of a movable electromagnetic stirrer, which helps to reduce the overall implementation cost of the electromagnetic stirring control method in continuous casting.

[0054] The following section will provide a detailed explanation of how to determine the stirring parameters.

[0055] In an exemplary embodiment, step 202 above includes the following steps: 1. Obtain the type of billet produced by continuous casting.

[0056] The billet type refers to the variety of billets produced by continuous casting. For example, billet types include slabs, round billets, square billets, H-beams, and I-beams. In this embodiment, when acquiring stirring parameters, the computer device obtains the billet type produced by continuous casting. Optionally, the computer device obtains the billet type produced by continuous casting through billet information pre-set by the operator.

[0057] 2. Based on the billet type, determine the solidification parameter type corresponding to the billet type.

[0058] In this embodiment of the application, after obtaining the above-mentioned billet type, a solidification parameter type corresponding to the billet type is determined based on the billet type. For example, the solidification parameter type includes the percentage of solidification thickness of the billet shell, the percentage of solidification area of ​​the billet shell, and the solid fraction at the center of the billet.

[0059] Optionally, the computer device pre-stores the association between billet types and solidification parameters. After obtaining the billet type, it uses this billet type as a reference and combines it with the pre-stored association to determine the solidification parameter type corresponding to the billet type. For example, if the billet type is a slab or H-beam, the corresponding solidification parameter type is the percentage of solidification thickness of the billet shell; if the billet type is a square billet, the corresponding solidification parameter type is the percentage of solidification area of ​​the billet shell; if the billet type is a round billet or I-beam, the corresponding solidification parameter type is the solid fraction at the center of the billet.

[0060] 3. Based on the solidification parameter type and temperature information, determine the distribution of solidification parameters in the billet during continuous casting.

[0061] In this embodiment of the application, after obtaining the aforementioned solidification parameter type and temperature information, the computer device determines the solidification parameter distribution of the billet in continuous casting based on the solidification parameter type and temperature information. Optionally, after determining the solidification parameter type, the computer device determines the solidification parameters at different locations of the billet based on the temperature information, thereby obtaining the solidification parameter distribution of the billet.

[0062] 4. Based on the distribution of solidification parameters, determine the stirring position using the position of the billet where the solidification parameters meet the requirements as a reference.

[0063] In this embodiment of the application, after obtaining the aforementioned solidification parameter distribution, the computer device determines the stirring position based on the solidification parameter distribution and the location of the cast billet where the solidification parameters meet the conditions. Optionally, the computer device obtains a segment of the cast billet where the solidification parameters meet the conditions based on the solidification parameter distribution, and then determines the stirring position at the location of that segment of the cast billet.

[0064] In one possible implementation, after obtaining a section of the billet whose solidification parameters meet the conditions, the computer device arbitrarily selects a position on the billet within that section as the stirring position.

[0065] In another possible implementation, after obtaining a section of the billet whose solidification parameters meet the conditions, the computer device determines the central position of the billet in that section as the stirring position. For example, if the solidification parameter type is the percentage of solidification thickness of the billet shell, then the condition is that the percentage of solidification thickness of the billet shell is within 40% to 60%, and the billet position with a 50% solidification thickness percentage of the billet shell is determined as the stirring position; if the solidification parameter type is the percentage of solidification area of ​​the billet shell, then the condition is that the percentage of solidification area of ​​the billet shell is within 60% to 80%, and the billet position with a 70% solidification area percentage of the billet shell is determined as the stirring position; if the solidification parameter type is the solid fraction at the center of the billet, then the condition is that the solid fraction at the center of the billet is within 0% to 40%, and the billet position with a 20% solid fraction at the center of the billet is determined as the stirring position.

[0066] 5. Determine the current intensity and electromagnetic frequency based on the solidification parameters corresponding to the stirring position.

[0067] In this embodiment, after obtaining the stirring position, the computer device determines the current intensity and electromagnetic frequency based on the solidification parameters corresponding to the stirring position. Optionally, the computer device determines the solidification parameters corresponding to the stirring position based on the solidification parameter distribution, and then determines the current intensity and electromagnetic frequency based on the solidification parameters corresponding to the stirring position.

[0068] Optionally, in this embodiment, after obtaining the stirring position, the computer device obtains a pre-stored first correspondence and a second correspondence. The first correspondence indicates the correspondence between solidification parameters and current intensity, and the second correspondence indicates the correspondence between solidification parameters and electromagnetic frequency. Then, the computer device determines the current intensity based on the solidification parameters corresponding to the stirring position and the first correspondence; and determines the electromagnetic frequency based on the solidification parameters corresponding to the stirring position and the second correspondence.

[0069] Optionally, in the embodiments of this application, the first correspondence and the second correspondence are obtained based on offline flow field and offline concentration field simulation calculations.

[0070] In summary, the technical solution provided in this application determines the corresponding solidification parameter type based on the billet type, then uses this solidification parameter type as a benchmark to determine the distribution of solidification parameters through temperature information, and finally determines the stirring parameters based on this solidification parameter distribution. The differences between different billet types are considered when obtaining the stirring parameters, as different billet types correspond to different solidification parameter types. When the billet type changes, the corresponding stirring parameters can be obtained by changing the corresponding solidification parameter type, improving the adaptability of electromagnetic stirring control in continuous casting. Furthermore, after determining the stirring position, the current intensity and electromagnetic frequency are determined based on the solidification parameters corresponding to the stirring position, further improving the accuracy of the overall stirring parameters, which in turn helps to improve the final product quality.

[0071] Furthermore, the current intensity is determined based on the solidification parameters corresponding to the stirring position using a first correspondence, and the electromagnetic frequency is determined based on the same solidification parameters using a second correspondence. Both the first and second correspondences are pre-stored information. This improves the overall accuracy of the stirring parameters and allows for rapid determination of the current intensity and electromagnetic frequency based on the pre-stored information, thus enhancing the timeliness of electromagnetic stirring. Moreover, correlating the current intensity and electromagnetic frequency with solidification parameters separately means that the stirring force and penetration depth are treated as two independent parameters during the stirring process, which improves the final stirring effect. Additionally, the first and second correspondences are obtained based on offline flow field and offline concentration field simulations, improving their accuracy and thus enhancing both the timeliness and accuracy of the stirring parameters.

[0072] Please refer to Figure 3 This illustrates a flowchart of a control method for electromagnetic stirring in continuous casting according to another embodiment of this application. This method is applied to... Figure 1 The computer device 30 in the control system of the electromagnetic stirring in continuous casting is shown. The method may include the following steps (301-308): Step 301: During the unstable process of continuous casting production, determine the temperature information of the billet based on the process parameters of continuous casting production.

[0073] Step 301 above and Figure 2 Step 201 in the embodiment is similar; see details below. Figure 2 Examples are not detailed here.

[0074] Step 302: Determine the solidus line of the billet based on the solidification temperature and temperature information of the billet melt in continuous casting; and determine the liquidus line of the billet based on the melting temperature and temperature information of the billet melt in continuous casting.

[0075] The solidification temperature, also known as the freezing point, is when the temperature of the molten billet is less than or equal to the solidification temperature, at which point the molten billet solidifies into a solid state. The melting temperature, also known as the melting point, is when the temperature of the molten billet is greater than or equal to the melting point, at which point the molten billet melts into a liquid state. Between the solidification temperature and the melting temperature, the molten billet exists in a semi-solid, semi-liquid state.

[0076] In this embodiment of the application, after obtaining the above-mentioned temperature information, the computer device determines the solidus line of the billet based on the solidification temperature and temperature information of the billet liquid in continuous casting; and determines the liquidus line of the billet based on the melting temperature and temperature information of the billet liquid in continuous casting.

[0077] Step 303: Generate first display information and second display information based on the solidus line and liquidus line.

[0078] In this embodiment, after obtaining the solidus line and the liquidus line, the computer device generates first display information and second display information based on the solidus line and the liquidus line. The first display information is used to display the solidus line curve and the liquidus line curve on the cross-section of the billet, and the second display information is used to display the solidus line curve and the liquidus line curve on the longitudinal section of the billet containing the electromagnetic stirrer. Exemplarily, the longitudinal section of the billet refers to the plane perpendicular to the cross-section of the billet where the electromagnetic stirrer is located.

[0079] Optionally, after acquiring the first display information and the second display information, the computer device displays the cross-section and longitudinal section of the billet in the display interface based on the first display information and the second display information, and displays the solidus curve and liquidus curve on the cross-section and longitudinal section of the billet, respectively.

[0080] It should be noted that, in this embodiment, the first display information and the second display information are dynamically updated over time. For example, during continuous casting, the computer equipment updates the temperature information at first time intervals, and updates the first and second display information based on the updated temperature information, thereby updating the aforementioned display interface based on the updated first and second display information.

[0081] Optionally, the stirring parameters are specified by the operator in real time. Optionally, in this embodiment, after obtaining the first and second display information, the computer device updates the stirring parameters based on the interactive operation detected on the display interface. The interactive operation can be a click operation, a swipe operation, an information input operation, etc., and this embodiment does not limit this. For example, after the display interface displays the solidus curve and the liquidus curve based on the first and second display information, the operator performs a click operation on a cross-section or longitudinal section of the display interface, and the computer device determines the stirring position of the electromagnetic stirrer for the billet based on the click operation; and the operator performs an information input operation on the display interface, and the computer device determines the current intensity and electromagnetic frequency of the electromagnetic stirrer based on the information input operation.

[0082] Optionally, if the computer device does not detect the above-mentioned interactive operation, it automatically controls the electromagnetic stirrer to stir the billet based on the following steps 304-308.

[0083] Step 304: Based on the temperature information, determine the stirring parameters of the electromagnetic stirrer for the billet.

[0084] Step 305: Based on the stirring position, control the electromagnetic stirrer to move to the corresponding position, and control the electromagnetic stirrer at that position to stir the billet with current intensity and electromagnetic frequency; and update the process parameters during the stirring process.

[0085] Step 306: Based on the updated process parameters, update the solidification parameters corresponding to the stirring position.

[0086] Step 307: If the updated solidification parameters meet the conditions, adjust the current intensity and electromagnetic frequency based on the updated solidification parameters.

[0087] Step 308: If the updated solidification parameters do not meet the conditions, update the stirring parameters based on the updated process parameters.

[0088] Steps 304-308 above and Figure 2 Steps 202-206 in the embodiment are similar; see details below. Figure 2 Examples are not detailed here.

[0089] In summary, the technical solution provided in this application determines the solidus and liquidus lines of the billet using temperature information and generates display information for displaying the solidus and liquidus curves. This allows the display interface to intuitively show the solidification of the billet based on the display information, thereby making the entire continuous casting process more transparent. Furthermore, displaying the solidus and liquidus curves on the cross-section and longitudinal section of the billet respectively enriches the display information. Moreover, the display information is dynamically updated over time, improving the real-time performance and accuracy of the display information.

[0090] In addition, upon detecting an interactive operation on the display interface, the stirring parameters are updated based on the interactive operation. That is, based on the automated control of the electromagnetic stirrer, this application provides a method for manually controlling the electrically stimulated stirrer. On the one hand, this improves the control flexibility of the electromagnetic stirrer, and on the other hand, it allows for timely manual adjustment of the stirring parameters when the computer equipment malfunctions and the stirring parameters become inaccurate, thereby improving the accuracy and safety of the electromagnetic stirring.

[0091] Please refer to Figure 4 This document illustrates a flowchart of a control method for electromagnetic stirring in continuous casting provided in another embodiment of this application. This method is applied to... Figure 1 The computer device 30 in the control system of the electromagnetic stirring in continuous casting is shown. The method may include the following steps (401-308): Step 401: In the unstable process of continuous casting production, based on the first time interval, the step of determining the temperature information of the billet based on the process parameters of continuous casting production is executed to determine the stirring parameters of the electromagnetic stirrer.

[0092] In this embodiment, during the unstable process of continuous casting production, the computer device determines the temperature information of the billet based on the process parameters of continuous casting production, using a first time interval as a reference. Further, based on the temperature information, it determines the stirring parameters of the electromagnetic stirrer for the billet, including stirring position, current intensity, and electromagnetic frequency. Further, based on the stirring position, it controls the electromagnetic stirrer to move to the corresponding position and, at that position, controls the electromagnetic stirrer to stir the billet with the current intensity and electromagnetic frequency, and updates the process parameters during stirring. Further, based on the updated process parameters, it updates the solidification parameters corresponding to the stirring position. Then, if the updated solidification parameters meet the conditions, the computer device adjusts the current intensity and electromagnetic frequency based on the updated solidification parameters; if the updated solidification parameters do not meet the conditions, the computer device updates the stirring parameters based on the updated process parameters.

[0093] For example, the first time interval can be any value. Staff can flexibly set and adjust the first time interval according to the actual situation, such as 1 second, 5 seconds, 10 seconds, etc. This application embodiment does not limit this.

[0094] Step 402: During the stabilization process of continuous casting production, the stirring parameters of the electromagnetic stirrer are determined based on the process parameters of continuous casting production, using the second time interval as a reference.

[0095] Optionally, a stable process refers to any process in continuous casting production other than the aforementioned unstable processes.

[0096] In this embodiment, during the stabilization process of continuous casting production, the computer device determines the temperature information of the cast billet based on the process parameters of continuous casting production, using a second time interval as a reference. Further, based on the temperature information, it determines the stirring parameters of the electromagnetic stirrer for the cast billet, including stirring position, current intensity, and electromagnetic frequency. Further, based on the stirring position, it controls the electromagnetic stirrer to move to the corresponding position and, at that position, controls the electromagnetic stirrer to stir the cast billet with the current intensity and electromagnetic frequency, and updates the process parameters during the stirring process. Further, based on the updated process parameters, it updates the solidification parameters corresponding to the stirring position. Subsequently, if the updated solidification parameters meet the conditions, the computer device adjusts the current intensity and electromagnetic frequency based on the updated solidification parameters; if the updated solidification parameters do not meet the conditions, the computer device updates the stirring parameters based on the updated process parameters.

[0097] Optionally, in this embodiment of the application, since the temperature information of the billet changes rapidly during the unstable process of continuous casting production, the duration indicated by the first time interval is less than the duration indicated by the second time interval.

[0098] For example, the second time interval can be any value. Staff can flexibly set and adjust the second time interval according to the actual situation, such as 5 minutes, 10 minutes, 15 minutes, 1 hour, etc. This application embodiment does not limit this.

[0099] In summary, the technical solution provided in this application takes into account the rapid change frequency of the billet temperature information during the unstable process and determines the stirring parameters of the electromagnetic stirrer based on the first time interval. During the stable process, taking into account the slow change frequency of the billet temperature information, the stirring parameters of the electromagnetic stirrer are determined based on the second time interval, which is longer than the first time interval. That is, when the temperature information changes rapidly, the stirring parameters are determined and updated at a fast frequency, which is beneficial to improving the final product quality. When the temperature information changes slowly, the stirring parameters are determined and updated at a slow frequency, which can reduce the energy consumption caused by frequent determination or updating of stirring parameters and save resources.

[0100] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0101] Please refer to Figure 5 This diagram illustrates a block diagram of a control device for electromagnetic stirring in continuous casting according to an embodiment of this application. The device has the function of implementing the aforementioned control method for electromagnetic stirring in continuous casting. This function can be implemented in hardware or by hardware executing corresponding software. The device can be the aforementioned computer equipment or can be installed within a computer equipment. The device may include: a temperature acquisition module 510, a parameter determination module 520, a stirring control module 530, a change determination module 540, and a parameter adjustment module 550.

[0102] The temperature acquisition module 510 is used to determine the temperature information of the billet based on the process parameters of continuous casting production. The temperature information is used to indicate the temperature distribution of the billet.

[0103] The parameter determination module 520 is used to determine the stirring parameters of the electromagnetic stirrer for the billet based on the temperature information; wherein the stirring parameters include stirring position, current intensity and electromagnetic frequency.

[0104] The stirring control module 530 is used to control the electromagnetic stirrer to move to the corresponding position based on the stirring position, and to control the electromagnetic stirrer to stir the billet with the current intensity and the electromagnetic frequency at the position; and to update the process parameters during the stirring process.

[0105] The change determination module 540 is used to update the solidification parameters corresponding to the stirring position based on the updated process parameters.

[0106] The parameter adjustment module 550 is used to adjust the current intensity and electromagnetic frequency based on the updated solidification parameters, provided that the updated solidification parameters meet the conditions.

[0107] The parameter adjustment module 550 is further configured to update the stirring parameters based on the updated process parameters if the updated solidification parameters do not meet the conditions.

[0108] In an exemplary embodiment, such as Figure 6 As shown, the parameter determination module 520 includes: a flow type acquisition unit 521, a type correspondence unit 522, a solidification acquisition unit 523, a position determination unit 524, and a parameter determination unit 525.

[0109] Type acquisition unit 521 is used to acquire the type of billet produced by continuous casting.

[0110] The type correspondence unit 522 is used to determine the solidification parameter type corresponding to the billet type based on the billet type.

[0111] Solidification acquisition unit 523 is used to determine the solidification parameter distribution of the billet in continuous casting based on the solidification parameter type and the temperature information.

[0112] The position determination unit 524 is used to determine the stirring position based on the solidification parameter distribution and the position of the billet where the solidification parameters meet the conditions.

[0113] The parameter determination unit 525 is used to determine the current intensity and the electromagnetic frequency based on the solidification parameters corresponding to the stirring position.

[0114] In an exemplary embodiment, the parameter determination unit 525 is configured to: Obtain a pre-stored first correspondence and a second correspondence; wherein the first correspondence is used to indicate the correspondence between solidification parameters and current intensity, and the second correspondence is used to indicate the correspondence between solidification parameters and electromagnetic frequency; The current intensity is determined based on the solidification parameters corresponding to the stirring position and the first correspondence; and the electromagnetic frequency is determined based on the solidification parameters corresponding to the stirring position and the second correspondence.

[0115] In an exemplary embodiment, the first correspondence and the second correspondence are obtained based on offline flow field and offline concentration field simulation calculations.

[0116] In an exemplary embodiment, such as Figure 6 As shown, the device further includes a curve determination module 560 and a display generation module 570.

[0117] The curve determination module 560 is used to determine the solidus line of the billet based on the solidification temperature of the billet melt in continuous casting and the temperature information; and to determine the liquidus line of the billet based on the melting temperature of the billet melt in continuous casting and the temperature information.

[0118] The display generation module 570 is used to generate first display information and second display information based on the solidus line and the liquidus line; wherein, the first display information is used to display the solidus line curve and the liquidus line curve on the cross section of the billet, and the second display information is used to display the solidus line curve and the liquidus line curve on the longitudinal section of the billet where the electromagnetic stirrer is located; wherein, the first display information and the second display information are dynamically updated over time.

[0119] In an exemplary embodiment, the parameter adjustment module 550 is further configured to update the stirring parameters based on the interactive operation detected on the display interface.

[0120] In an exemplary embodiment, such as Figure 6 As shown, the device also includes: a warning detection module 480 and a quality reduction module 590.

[0121] The early warning detection module 580 is used to obtain the current stirring position of the electromagnetic stirrer when an early warning information is detected; and to determine the stirring area corresponding to the current stirring position based on the changes in current intensity and electromagnetic frequency when the electromagnetic stirrer stays at the current stirring position.

[0122] The quality reduction module 590 is used to determine the quality level reduction corresponding to the stirring zone.

[0123] In an exemplary embodiment, the temperature acquisition module 510 is used for: During the unstable process of continuous casting production, the step of determining the temperature information of the billet based on the process parameters of continuous casting production is executed from the first time interval as a reference, so as to determine the stirring parameters of the electromagnetic stirrer. During the stabilization process of the continuous casting production, the stirring parameters of the electromagnetic stirrer are determined based on the process parameters of the continuous casting production, with the second time interval as a reference; wherein the duration indicated by the first time interval is less than the duration indicated by the second time interval.

[0124] In summary, the technical solution provided in this application determines the temperature distribution of the billet based on the process parameters during the unstable process of continuous casting production. This allows for the determination of the stirring position, current intensity, and electromagnetic frequency of the electromagnetic stirrer for the billet. In other words, the optimal stirring parameters are determined relative to the billet based on its temperature distribution during the unstable process. Compared to related technologies where electromagnetic stirring of the billet is only performed when process parameters are stable, this improves the stirring capability of the electromagnetic stirrer for the billet, which is beneficial for breaking down dendrite structures and increasing the equiaxed crystal ratio, thereby improving the final product quality. Furthermore, during the stirring process, the stirring parameters are updated based on the updated process parameters, allowing for flexible updates during the stirring process and further enhancing the stirring capability of the electromagnetic stirrer for the billet. On the other hand, considering that frequent changes to the stirring position of the electromagnetic stirrer may increase equipment maintenance costs, real-time tracking of the solidification parameters corresponding to the stirring position, and adjusting only the current intensity and electromagnetic frequency when the updated solidification parameters meet the requirements, and updating the stirring position when the updated solidification parameters do not meet the requirements, is beneficial to improving process stability, reducing the risk of slag entrapment, minimizing mechanical wear caused by frequent movement of the electromagnetic stirrer, and thus reducing equipment maintenance costs. Moreover, in the continuous casting process, the current intensity affects the stirring force, and the electromagnetic frequency affects the penetration depth. This application determines the optimal stirring parameters for the electromagnetic stirrer for the billet by considering the stirring position, stirring force, and penetration depth during stirring. This is beneficial to improving the overall accuracy of the stirring parameters, thereby improving the stirring effect in the continuous casting process and ultimately improving the quality of the final product.

[0125] In an exemplary embodiment, a computer device is also provided, the computer device including a processor and a memory, the memory storing a computer program, the computer program being loaded and executed by the processor to implement the above-described control method for electromagnetic stirring in continuous casting.

[0126] In an exemplary embodiment, a non-transitory computer-readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements the above-described control method for electromagnetic stirring in continuous casting.

[0127] In an exemplary embodiment, a computer program product is also provided, which, when run, causes a computer device to execute the above-described control method for electromagnetic stirring in continuous casting.

[0128] The above embodiments are merely illustrative of the technical concept and features of the present invention, intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and should not be construed as limiting the scope of protection of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention.

Claims

1. A method for controlling electromagnetic stirring in continuous casting, characterized in that, The method includes: In the unstable process of continuous casting production, the temperature information of the billet is determined based on the process parameters of continuous casting production; wherein, the unstable process refers to the transition process of the first process parameter in the process parameters from one stable state to another stable state, and the temperature information is used to indicate the temperature distribution of the billet; Based on the temperature information, the stirring parameters of the electromagnetic stirrer for the billet are determined; wherein, the stirring parameters include stirring position, current intensity and electromagnetic frequency; Based on the stirring position, the electromagnetic stirrer is controlled to move to the corresponding position, and at the position, the electromagnetic stirrer is controlled to stir the billet with the current intensity and the electromagnetic frequency; and the process parameters are updated during the stirring process. Based on the updated process parameters, the solidification parameters corresponding to the stirring position are updated; If the updated solidification parameters meet the conditions, the current intensity and the electromagnetic frequency are adjusted based on the updated solidification parameters; If the updated solidification parameters do not meet the conditions, the stirring parameters are updated based on the updated process parameters.

2. The method according to claim 1, characterized in that, Determining the stirring parameters of the electromagnetic stirrer for the cast billet based on the temperature information includes: Obtain the type of billet produced by continuous casting; Based on the billet type, determine the solidification parameter type corresponding to the billet type; Based on the solidification parameter type and the temperature information, the distribution of solidification parameters of the billet in continuous casting is determined; Based on the solidification parameter distribution, the stirring position is determined with the position of the billet where the solidification parameters meet the conditions as a reference. The current intensity and the electromagnetic frequency are determined based on the solidification parameters corresponding to the stirring position.

3. The method according to claim 2, characterized in that, Determining the current intensity and the electromagnetic frequency based on the solidification parameters corresponding to the stirring position includes: Obtain a pre-stored first correspondence and a second correspondence; wherein the first correspondence is used to indicate the correspondence between solidification parameters and current intensity, and the second correspondence is used to indicate the correspondence between solidification parameters and electromagnetic frequency; The current intensity is determined based on the solidification parameters corresponding to the stirring position and the first correspondence; and the electromagnetic frequency is determined based on the solidification parameters corresponding to the stirring position and the second correspondence.

4. The method according to claim 3, characterized in that, The first and second correspondences are obtained based on offline flow field and offline concentration field simulation calculations.

5. The method according to claim 1, characterized in that, After obtaining the billet temperature information based on the process parameters of continuous casting production, the method further includes: Based on the solidification temperature of the molten billet in continuous casting and the temperature information, the solidus line of the billet is determined; and based on the melting temperature of the molten billet in continuous casting and the temperature information, the liquidus line of the billet is determined. First display information and second display information are generated based on the solidus line and the liquidus line; wherein, the first display information is used to display the solidus line curve and the liquidus line curve on the cross section of the billet, and the second display information is used to display the solidus line curve and the liquidus line curve on the longitudinal section of the billet where the electromagnetic stirrer is located; The first display information and the second display information are dynamically updated over time.

6. The method according to claim 5, characterized in that, After generating the first display information and the second display information based on the solidus line and the liquidus line, the method further includes: Upon detecting an interactive operation on the display interface, the stirring parameters are updated based on the interactive operation.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: Upon detecting a warning message, the current stirring position of the electromagnetic stirrer is obtained; Based on the changes in current intensity and electromagnetic frequency of the electromagnetic stirrer when it stops at the current stirring position, the stirring area corresponding to the current stirring position is determined. The quality grade corresponding to the stirring zone is determined to be reduced.

8. The method according to any one of claims 1 to 6, characterized in that, The method further includes: During the unstable process of continuous casting production, the step of determining the temperature information of the billet based on the process parameters of continuous casting production is executed from the first time interval as a reference, so as to determine the stirring parameters of the electromagnetic stirrer. During the stabilization process of the continuous casting production, the stirring parameters of the electromagnetic stirrer are determined based on the process parameters of the continuous casting production, with the second time interval as a reference; wherein the duration indicated by the first time interval is less than the duration indicated by the second time interval.

9. A control device for electromagnetic stirring in continuous casting, characterized in that, The electromagnetic stirring control device in continuous casting is used to implement the method as described in any one of claims 1 to 8, the device comprising: The temperature acquisition module is used to determine the temperature information of the billet based on the process parameters of continuous casting production during the unstable process of continuous casting production; wherein, the unstable process refers to the transition process of the first process parameter in the process parameters from one stable state to another stable state, and the temperature information is used to indicate the temperature distribution of the billet. The parameter determination module is used to determine the stirring parameters of the electromagnetic stirrer for the billet based on the temperature information; wherein the stirring parameters include stirring position, current intensity and electromagnetic frequency; A stirring control module is used to control the electromagnetic stirrer to move to the corresponding position based on the stirring position, and to control the electromagnetic stirrer to stir the billet with the current intensity and the electromagnetic frequency at the position; and to update the process parameters during the stirring process. The change determination module is used to update the solidification parameters corresponding to the stirring position based on the updated process parameters; The parameter adjustment module is used to adjust the current intensity and the electromagnetic frequency based on the updated solidification parameters, provided that the updated solidification parameters meet the conditions. The parameter adjustment module is further configured to update the stirring parameters based on the updated process parameters if the updated solidification parameters do not meet the conditions.

10. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing a computer program that is loaded and executed by the processor to implement the method as claimed in any one of claims 1 to 8.

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