A control method for fixed-point melting of cored wire, electronic device and storage medium

Abstract

The present invention provides a control method for fixed-point melting of cored wire, an electronic device, and a storage medium, belonging to the field of metallurgy. The method comprises the following steps: calculating the wire feeding speed and the rare earth wire radius based on the required rare earth feed rate; calculating the residence time of the rare earth wire in the crystallizer based on the wire feeding speed and the distance between the target position of rare earth wire melting in the crystallizer and the crystallizer liquid surface; calculating the thickness of the coating layer based on the residence time; obtaining the flow field distribution in the crystallizer and calculating a horizontal offset based on the flow field distribution; and calculating and correcting the cored wire feed direction based on the offset. The method utilizes a "rare earth feed rate-wire feeding speed-rare earth wire diameter coupling" to design the cored wire's dimensional parameters and, based on the crystallizer flow field distribution, corrects the feeding direction to achieve fixed-point melting of the cored wire.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to a control method for fixed-point melting of a cored wire, an electronic device and a storage medium. Background Art

[0002] The addition of rare earth elements can effectively improve the overall performance of steel. Its mechanism of action primarily encompasses three aspects: First, rare earths react with active elements in molten steel, such as oxygen and sulfur, to form rare earth oxides and sulfides, achieving deep purification of the steel. Second, through their metamorphic treatment, rare earths reshape the morphology of harmful inclusions, transforming strip-shaped MnS inclusions, large-sized calcium aluminates, and hard inclusions such as alumina and magnesia spinel into spherical rare earth oxysulfides. This improves rolling performance while significantly enhancing the impact toughness of the steel. Furthermore, the selective segregation of rare earths at austenite grain boundaries refines the grain size, achieving simultaneous improvements in strength and ductility. In summary, rare earth steel offers significant performance advantages and economic benefits. Rare earth microalloying technology has achieved a triple breakthrough in steel's impact toughness, strength, ductility, and corrosion resistance, providing an innovative path for the steel industry to overcome the bottleneck of the coordinated development of "high performance, low cost, and green development."

[0003] Currently, industrially applied rare earth addition technologies primarily fall into four categories: ladle press-in, ladle wire feeding, tundish wire feeding, and mold wire feeding. While ladle press-in and ladle wire feeding achieve uniform dispersion of rare earth elements in molten steel, element yields generally fall below 50% due to oxidation and burnout, and rare earth content rarely consistently exceeds 100 ppm. The tundish wire feeding method can increase yields to over 50% and rare earth content to over 100 ppm, but due to insufficient dynamic conditions for rare earth inclusion uptake, it can easily lead to nozzle nodules, disrupting smooth production. In comparison, the mold wire feeding method achieves high yields and high rare earth content, completely eliminating the risk of nozzle nodules, making it the most effective solution to overcome existing process bottlenecks.

[0004] Current mold wire feeding technology faces a key bottleneck: uneven distribution of rare earth elements across the cross-section of the ingot, a particularly prominent issue during the continuous casting of large-section slabs. After melting in the mold, the rare earth wire is subjected to directional scouring by the jet from the side holes of the submerged nozzle, resulting in a gradient distribution of rare earth elements in the collision zone of the streams. The solute transport of rare earth elements is controlled by the interaction between the multi-scale vortex structure within the mold and the mushy zone at the solidification front. When the rare earth melting point deviates from the optimal melting point, irreversible uneven distribution will occur. Numerical simulation can determine the optimal melting point for rare earths, but the current technical bottleneck focuses on how to achieve the melting of the rare earth wire at this optimal melting point. Summary of the Invention

[0005] To address the aforementioned issues, the present invention provides a control method, electronic device, and storage medium for targeted melting of cored wire. This method utilizes a "rare earth feed rate-feed speed-rare earth wire diameter coupling" to design the cored wire's dimensional parameters. The feed direction is then corrected based on the mold flow distribution to achieve targeted melting of the cored wire.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] An embodiment of the present invention provides a control method for fixed-point melting of a cored wire, which is used in a crystallizer, wherein the cored wire includes a coating layer and a rare earth wire coated therein, and comprises the following steps: calculating a wire feeding speed and a radius of the rare earth wire based on a required rare earth feed amount; calculating a residence time of the rare earth wire in the crystallizer based on the wire feeding speed and a distance from a target position where the rare earth wire melts in the crystallizer to a liquid surface in the crystallizer; calculating a thickness of the coating layer based on the residence time; obtaining a flow field distribution in the crystallizer, and calculating a horizontal offset based on the flow field distribution in the crystallizer; and correcting the feeding direction of the cored wire based on the offset.

[0008] Furthermore, the wire feeding speed is calculated as follows:

[0009] ;

[0010] Where, v 丝 is the wire feeding speed, v 连铸 is the pulling speed, M 稀土 is the mass fraction of rare earth in steel, a and b are the width and thickness of the billet respectively, ρ 铸坯 is the density of the ingot and ρ 稀土丝 is the density of the rare earth wire, and d is the radius of the rare earth wire.

[0011] Furthermore, the thickness of the coating layer is calculated using the following formula:

[0012] ;

[0013] ;

[0014] Where s Deep is the distance from the melting position to the liquid surface of the crystallizer, c p is the specific heat capacity of the coating layer, c m is the latent heat of melting of the coating layer, T1 is the initial temperature of the cored wire, T2 is the melting point of the coating layer, T3 is the ambient temperature of the molten steel, D is the thickness of the coating layer, ρ is the density of the coating layer, and t is the melting time.

[0015] Furthermore, the velocity field in the horizontal direction at any position in the crystallizer is obtained;

[0016] ;

[0017] The horizontal offset is calculated based on the velocity field as follows:

[0018] ;

[0019] ;

[0020] ;

[0021] ;

[0022] ;

[0023] Where X is the offset in the x-direction, Y is the offset in the y-direction, z is the depth of the molten pool, and ρ steel is the density of the molten steel in the crystallizer, C D is the drag coefficient, v x(z) is the velocity in the x direction at z, v y(z) is the velocity in the y direction at z, τ is the temperature sensitivity factor, σ0 refers to the reference tensile strength of the material at 20°C, ω is the smoothness factor, S d is the surface finish, λ is the comprehensive resistance constant, T is the temperature, μ is the linear density, and is the ratio of the rare earth wire mass to length.

[0024] Furthermore, when feeding the cored wire, the offset in the x and y directions is corrected in the opposite direction to offset the deviation of the rare earth wire caused by the impact of the nozzle fluid.

[0025] Furthermore, ρ 铸坯 and ρ 稀土丝 The calculation is performed using the following method:

[0026] First, weigh the mass of the dry sample and record it as m 干 Then, the sample was completely immersed in distilled water at a constant temperature of 4°C, and its apparent mass m was measured using the suspension method. 湿 ,

[0027] ;

[0028] ρ i is ρ 铸坯 or ρ 稀土丝 , ρ 水 The density of distilled water at 4°C.

[0029] Furthermore, the flow field distribution in the crystallizer is obtained by actual measurement or software simulation.

[0030] Furthermore, the outer surface of the coating layer has grooves extending longitudinally along the cored wire, the minimum root distance g1 of the grooves is 0.1mm-0.5mm, the depth dep of the grooves is 0.5mm-1.0mm, and the distance g2 between adjacent grooves is 0.5mm-2.0mm;

[0031] Based on the groove depth dep, the minimum root distance g1 and the distance g2 between adjacent grooves, X and Y are corrected. The correction formula is as follows:

[0032] ;

[0033] ;

[0034] .

[0035] An embodiment of the present invention also provides an electronic device, comprising: a control center, the control center including one or more processors; a memory, on which one or more programs are stored, and when the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned control method.

[0036] An embodiment of the present invention further provides a storage medium storing one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the above control method.

[0037] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include:

[0038] This invention innovatively constructs a multi-parameter coordinated control system for rare earth feed rate, wire feeding speed, and rare earth wire diameter. By precisely matching the optimal melting point, determined through numerical simulation and other means, with the structural parameters of the cored wire, it achieves uniform distribution of rare earth elements across the cross-section of the ingot. This technology enables targeted melting of the rare earth wire under preset thermodynamic conditions, significantly improving inclusion modification and solidification structure refinement. Furthermore, the uniform distribution of rare earth elements across the ingot cross-section increases rare earth element utilization and reduces production costs associated with excessive rare earth addition. Simultaneously, this reduces the difference in longitudinal and transverse elongation of the rolled material, reduces yield strength fluctuations, and improves product performance consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A schematic diagram of the cored wire structure provided by an embodiment of the present invention;

[0041] Figure 2 A schematic diagram of another cored wire structure provided by an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the cross-sectional detection site after the test in Example 1 of the present invention is completed.

[0043] Figure numerals: 1, rare earth wire; 2, coating layer; 3, groove. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The specific implementation methods of the present invention are not limited to the specific embodiments given herein, and those skilled in the art may make similar improvements without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used are only for describing specific embodiments and do not limit the present invention.

[0046] The embodiment of the present invention provides a method for controlling the fixed-point melting of a cored wire, which is used in a crystallizer, such as Figure 1 As shown, the cored wire includes a coating layer 2 and a rare earth wire 1 coated therein, and includes the following steps:

[0047] S1. Calculating the wire feeding speed and the rare earth wire diameter based on the required rare earth feed amount.

[0048] S2. Calculating the residence time of the rare earth wire in the crystallizer based on the wire feeding speed and the distance between the target position where the rare earth wire is melted in the crystallizer and the liquid level of the crystallizer;

[0049] S3, calculating the thickness of the coating layer based on the residence time;

[0050] S4. Obtaining the flow field distribution in the crystallizer, and calculating the horizontal offset based on the flow field distribution in the crystallizer;

[0051] S5. Correct the feeding direction of the cored wire based on the offset.

[0052] This invention innovatively constructs a multi-parameter coordinated control system for rare earth feed rate, wire feeding speed, and rare earth wire diameter. By precisely matching the optimal melting point, determined through numerical simulation and other means, with the structural parameters of the cored wire, it achieves uniform distribution of rare earth elements across the cross-section of the ingot. This technology enables targeted melting of the rare earth wire under preset thermodynamic conditions, significantly improving inclusion modification and solidification structure refinement. Furthermore, the uniform distribution of rare earth elements across the ingot cross-section increases rare earth element utilization and reduces production costs associated with excessive rare earth addition. Simultaneously, this reduces the difference in longitudinal and transverse elongation of the rolled material, reduces yield strength fluctuations, and improves product performance consistency.

[0053] Specifically, the wire feeding speed is calculated as follows:

[0054] ;

[0055] Where, v 丝 is the wire feeding speed, in m·s -1 ;v 连铸 is the pulling speed, in m·s -1 ;M 稀土 is the mass fraction of rare earth in steel, %; a and b are the width and thickness of the billet, respectively, in m; ρ 铸坯 is the density of the ingot and ρ 稀土丝 is the density of rare earth wire, in kg·m -3 ; d is the diameter of the rare earth wire, unit is m.

[0056] Preferably, 铸坯 and ρ 稀土丝 The calculation is performed using the following method:

[0057] First, weigh the mass of the dry sample and record it as m 干 Then, the sample was completely immersed in distilled water at a constant temperature of 4°C, and its apparent mass m was measured using the suspension method. 湿 ,

[0058] ;

[0059] ρ i is ρ 铸坯 or ρ 稀土丝 , ρ 水 The density of distilled water at 4°C.

[0060] Where ρ 水 Indicates the density of experimental water in kg·m -3 At 4°C, the recommended reference value is 999.97 kg·m -3 When measuring at other temperatures, the water density value must be corrected.

[0061] The thickness of the coating layer is calculated using the following formula:

[0062] ;

[0063] ;

[0064] Where s Deep is the distance from the melting position to the liquid surface of the crystallizer, in m; c p is the specific heat capacity of the coating layer, in J·(kg·℃) -1 ;c m is the latent heat of melting of the coating layer, in J·kg -1 ; T1 is the initial temperature of the cored wire, in °C; T2 is the melting point of the coating, in °C; T3 is the ambient temperature of the molten steel, in °C; D is the thickness of the coating, in m; ρ is the density of the coating, in kg·m -3 , t is the melting time, unit is s.

[0065] After calculating the thickness of the ultra-low carbon steel, cored wire material of the corresponding specifications can be produced. Using wire feeding equipment, the cored wire is precisely delivered to the optimal rare earth melting point at a preset feeding speed, achieving quantitative addition of rare earth elements and uniform distribution within the mold.

[0066] It should be noted that the material selection of the cladding layer is based on the material of the continuous casting billet. The cladding layer of this application is made of ultra-low carbon steel. The ultra-low carbon steel described in this invention refers to ordinary carbon steel with a carbon content of less than 0.03%, and no alloy raw materials other than elements such as C, Si, Mn, P, S, Al, Ca, O, and N are actively added during smelting.

[0067] Among them, c p and c m It can be calculated based on the composition of ultra-low carbon steel using thermodynamic software such as FactSage. The melting point of ultra-low carbon steel is T2, which can be calculated using the following formula:

[0068] ;

[0069] Where M represents the mass fraction and the subscript represents the element.

[0070] Specifically, the velocity field in the horizontal direction at any position in the crystallizer is obtained;

[0071] ;

[0072] The velocity function can be obtained through numerical simulation software such as Fluent, or an approximate value can be set in each partition by using the crystallizer region discretization method.

[0073] The horizontal offset is calculated based on the velocity field as follows:

[0074] ;

[0075] ;

[0076] ;

[0077] ;

[0078] ;

[0079] Where X is the offset in the x-direction, Y is the offset in the y-direction, and z is the depth of the molten pool in meters; ρ steel is the density of the molten steel in the crystallizer, in kg·m -3 ; C D is the drag coefficient, v x(z) is the velocity in the x direction at position z, in m·s -1 ;v y(z) is the velocity in the y direction at position z, in m·s -1 ; τ is the temperature sensitivity factor, σ0 refers to the reference tensile strength of the material at 20°C, ω is the smoothness factor, S d is the surface finish, λ is the comprehensive resistance constant, T is the temperature, the unit is ℃; μ is the linear density, which is the ratio of the mass of the rare earth wire to its length, the unit is kg·m -1 .

[0080] Among them, τ is the temperature sensitivity factor, which characterizes the degree of influence of temperature on resistance. Its value depends on the material type and needs to be determined through experiments. The value range is usually 1~10; σ0 refers to the reference tensile strength of the material at 20℃; ω is the smoothness factor, which reflects the influence of temperature on surface smoothness. It needs to be calibrated through experiments and the typical value range is 0.01-0.1; S d is the surface finish; λ is the comprehensive resistance constant, which is used to quantify the coupling effect of temperature on material strength and surface finish. It needs to be determined through experiments, and the conventional value range is -1~-5.

[0081] It should be noted that the plane formed by the x and y directions is perpendicular to the vertical direction. Preferably, the x direction is the width direction of the crystallizer, and the y direction is the thickness direction of the crystallizer.

[0082] When feeding the cored wire, the offset in the x and y directions is corrected in the opposite direction to offset the rare earth wire offset caused by the fluid impact of the nozzle.

[0083] Further, such as Figure 2As shown, the coating layer has a groove 3 extending longitudinally along the core wire in the axial direction, the minimum root distance g1 of the groove 3 is 0.1mm-0.5mm, the depth dep of the groove is 0.5mm-1.0mm, and the distance g2 between adjacent grooves is 0.5mm-2.0mm;

[0084] Based on the groove depth dep, the minimum root distance g1 and the distance g2 between adjacent grooves, X and Y are corrected. The correction formula is as follows:

[0085] ;

[0086] ;

[0087] .

[0088] In this technical solution, the diameter d of the rare earth wire and the thickness D of the coating layer are obtained based on the above calculations. After the cored wire is prepared, it is pressed to obtain the corresponding grooves.

[0089] An embodiment of the present invention also provides an electronic device, such as a control center, comprising one or more processors; a memory on which one or more programs are stored, and when the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned control method.

[0090] The electronic device in the present invention may include one or more of the following components: a memory, a processor, and one or more applications, wherein the one or more applications may be stored in the memory and configured to be executed by one or more processors, and the one or more programs are configured to execute the method described in the aforementioned method embodiment.

[0091] The memory may include random access memory (RAM) or read-only memory (ROM). The memory may be used to store instructions, programs, code, code sets, or instruction sets. The memory may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a histogram equalization function), and instructions for implementing the various method embodiments described above. The data storage area may also store data generated by the electronic device during use (such as image matrix data).

[0092] A processor may include one or more processing cores. The processor utilizes various interfaces and circuits to connect various components within the electronic device. It executes instructions, programs, code sets, or instruction sets stored in memory, and accesses data stored in memory to perform various functions and process data. Optionally, the processor can be implemented in hardware using at least one of the following: a digital signal processing (DSP), a field-programmable gate array (FPGA), or a programmable logic array (PLA). The processor may integrate one or a combination of a central processing unit (CPU) and a modem. The CPU primarily processes the operating system and application programs, while the modem handles wireless communications. It is understood that the modem may not be integrated into the processor and may instead be implemented as a separate communications chip.

[0093] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0094] Example 1

[0095] Cooperating with Inner Mongolia Baotou Steel Union Co., Ltd., we jointly researched a technology to control the fixed-point melting of rare earth wire in the crystallizer, and carried out research in a crystallizer with a length of 900mm×width of 1830mm×thickness of 230mm. The water inlet temperature of the crystallizer was maintained at 35±3℃, the water outlet temperature on the wide side was 40±1℃, and the water outlet temperature on the narrow side was 45±1℃. The liquid level of the crystallizer was set to 800mm (the liquid level was 100mm from the upper edge of the crystallizer), and the submerged water nozzle was inserted 135mm into the liquid surface. The average superheat of the tundish casting was 36.5℃. The experiment adopted the method of feeding rare earth wire into the crystallizer, adding 0.022wt.% rare earth to the molten steel in the crystallizer, and after the test was completed, the attached Figure 3 As shown in the detection site, the 1 / 4 cross-sectional area on the upper left side of the ingot is sampled to detect the rare earth content.

[0096] When the fixed-point melting technology of the controlled rare earth wire crystallizer is not applied, the rare earth distribution of the ingot is shown in Appendix 1. The average rare earth content in the cross section is 0.0194%, with a fluctuation range of 0.0038%-0.0290%. The rare earth content at each detection point is distributed between 19.6% and 149.3% of the average value.

[0097] Table 1 Distribution of rare earth elements at different locations in the prior art

[0098] Location Width side 1 / 8 in the width direction 1 / 4 of the width 3 / 8 in width direction 1 / 2 of the width Thickness direction edge 0.0198% 0.0207% 0.0210% 0.0290% 0.0286% 1 / 4 of the thickness direction 0.0177% 0.0145% 0.0225% 0.0262% 0.0288% 1 / 2 of the thickness direction 0.0198% 0.0039% 0.0038% 0.0154% 0.0197%

[0099] After implementing the fixed-point melting control technology, the rare earth content (see Appendix 2) increased to an average of 0.0217% across the cross-section, with extreme values ​​narrowed to 0.0172%-0.0243%. The fluctuation range relative to the average content decreased to a range of 79.2%-111.9%. Compared to the data in Table 1, this technology significantly improved the uniformity of rare earth element distribution and reduced the fluctuation range of content by 97 percentage points, demonstrating significant process optimization results.

[0100] Table 2 Rare earth distribution at different positions after using the mold displacement compensation scheme and conventional non-grooved cored wire

[0101] Location Width side 1 / 8 in the width direction 1 / 4 of the width 3 / 8 in width direction 1 / 2 of the width Thickness direction edge 0.0209% 0.0231% 0.0235% 0.0238% 0.0243% 1 / 4 of the thickness direction 0.0228% 0.0212% 0.0225% 0.0194% 0.0205% 1 / 2 of the thickness direction 0.0229% 0.0219% 0.0199% 0.0172% 0.0219%

[0102] Example 2

[0103] In this embodiment, the cladding layer has grooves extending longitudinally along the cored wire, the minimum root distance g1 of the grooves is 0.1 mm, the depth dep of the grooves is 0.6 mm, and the distance g2 between adjacent grooves is 1.0 mm;

[0104] Based on the groove depth dep, the minimum root distance g1 and the distance g2 between adjacent grooves, X and Y are corrected. The correction formula is as follows:

[0105] ;

[0106] ;

[0107] ;

[0108] By calculation If the value of is 0.85, X and Y are corrected.

[0109] After adopting grooved cored wire, the rare earth content (see Appendix 3) increased to an average of 0.0219% in cross-section, with extreme values ​​narrowed to 0.0193%-0.0238%. The fluctuation range relative to the average content decreased to a range of 88.2%-108.7%. Compared to the data in Table 1, the content fluctuation range was reduced by 109.2 percentage points, demonstrating a significant improvement in process optimization.

[0110] Table 3 Rare earth distribution at different positions after using the mold displacement compensation scheme and the cored wire with grooves

[0111] Location Width side 1 / 8 in the width direction 1 / 4 of the width 3 / 8 in width direction 1 / 2 of the width Thickness direction edge 0.0201% 0.0219% 0.0229% 0.0238% 0.0237% 1 / 4 of the thickness direction 0.0233% 0.0205% 0.0226% 0.0231% 0.0225% 1 / 2 of the thickness direction 0.0216% 0.0199% 0.0193% 0.0212% 0.0219%

[0112] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for controlling fixed-point melting of a cored wire, used in a crystallizer, wherein the cored wire comprises a coating layer and a rare earth wire coated therein, characterized in that: The steps include: Calculating the wire feeding speed and the rare earth wire diameter based on the required rare earth feed amount; Based on the wire feeding speed, the residence time of the rare earth wire in the crystallizer is calculated according to the distance between the target position of melting of the rare earth wire in the crystallizer and the liquid level of the crystallizer; calculating the thickness of the coating layer based on the residence time; Obtaining a flow field distribution in the crystallizer, and calculating a horizontal offset based on the flow field distribution in the crystallizer; Correcting the feeding direction of the cored wire based on the offset; The calculation method of wire feeding speed is: ； Where, v 丝 is the wire feeding speed, v 连铸 is the pulling speed, M 稀土 is the mass fraction of rare earth in steel, a and b are the width and thickness of the billet respectively, ρ 铸坯 is the density of the ingot and ρ 稀土丝 is the density of rare earth wire, d is the diameter of rare earth wire; The thickness of the coating layer is calculated using the following formula: ； ； Where s Deep is the distance from the melting position to the liquid surface of the crystallizer, c p is the specific heat capacity of the coating layer, c m is the latent heat of melting of the coating layer, T1 is the initial temperature of the cored wire, T2 is the melting point of the coating layer, T3 is the ambient temperature of the molten steel, D is the thickness of the coating layer, ρ is the density of the coating layer, and t is the melting time; Obtain the velocity field in the horizontal direction at any position in the crystallizer; ； The horizontal offset is calculated based on the velocity field as follows: ； ； ； ； ； Where X is the offset in the x-direction, Y is the offset in the y-direction, z is the depth of the molten pool, and ρ steel is the density of the molten steel in the crystallizer, C D is the drag coefficient, v x(z) is the velocity in the x direction at z, v y(z) is the velocity in the y direction at z, τ is the temperature sensitivity factor, σ0 refers to the reference tensile strength of the material at 20°C, ω is the smoothness factor, S d is the surface finish, λ is the comprehensive resistance constant, T is the temperature, μ is the linear density, which is the ratio of the mass and length of the rare earth wire, and d is the diameter of the rare earth wire.

2. The control method according to claim 1, characterized in that: When feeding the cored wire, the offset in the x and y directions is corrected in the opposite direction to offset the rare earth wire offset caused by the fluid impact of the nozzle.

3. The control method according to claim 1, characterized in that: ρ 铸坯 and ρ 稀土丝 The calculation is performed using the following method: First, weigh the mass of the dry sample and record it as m 干 Then, the sample was completely immersed in distilled water at a constant temperature of 4°C, and its apparent mass m was measured using the suspension method. 湿 , ； ρ i is ρ 铸坯 or ρ 稀土丝 ,ρ 水 The density of distilled water at 4°C.

4. The control method according to claim 1, wherein: The flow field distribution in the crystallizer is obtained by actual measurement or software simulation.

5. The control method according to claim 1, characterized in that: The outer surface of the coating layer has grooves extending longitudinally along the cored wire, the minimum root distance g1 of the grooves is 0.1mm-0.5mm, the depth dep of the grooves is 0.5mm-1.0mm, and the distance g2 between adjacent grooves is 0.5mm-2.0mm; Based on the groove depth dep, the minimum root distance g1 and the distance g2 between adjacent grooves, X and Y are corrected. The correction formula is as follows: ； ； 。 6. An electronic device, characterized in that: include: A control center, comprising one or more processors; A memory having one or more programs stored thereon, which, when executed by the one or more processors, enables the one or more processors to implement the control method according to any one of claims 1 to 5.

7. A storage medium, characterized in that: The storage medium stores one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement the control method according to any one of claims 1 to 5.

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