A copper clad steel horizontal continuous casting solidification heat transfer analysis method based on numerical simulation technology

Abstract

The application discloses a copper clad steel horizontal continuous casting solidification heat transfer analysis method based on a numerical simulation technology, and relates to the technical field of the copper clad steel horizontal continuous casting. The method comprises the following steps: 1. establishing a three-dimensional geometric model of a crystallizer and a copper clad steel billet; 2. importing the three-dimensional geometric model of the crystallizer and the copper clad steel billet into finite element analysis software, solving the temperature field of copper liquid in the crystallizer, and performing calculation and analysis; 3. establishing a crystallizer and copper clad steel billet solidification heat transfer model, and loading the calculation result in the step 2 into the solidification heat transfer model as an initial temperature; 4. performing solidification heat transfer calculation on the copper clad steel horizontal continuous casting; and 5. performing data analysis and visual processing on the solidification heat transfer calculation result of the copper clad steel horizontal continuous casting. The application establishes a solidification heat transfer model based on a finite element analysis software platform, fully restores the solidification process of the copper clad steel horizontal continuous casting by using the numerical simulation technology, and has a good guiding effect on continuous casting production.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of horizontal continuous casting, in particular to a copper clad steel horizontal continuous casting solidification heat transfer analysis method based on numerical simulation technology. BACKGROUND

[0002] As a good grounding material, copper clad steel has excellent electrical conductivity and economy. In the scenes where the requirements for lightning protection and electricity discharge are high, such as railway transportation, oil exploration, power generation, etc., copper clad steel is widely used in lightning protection grounding engineering. In the process of continuous development of copper clad steel horizontal continuous casting technology in China, there are still various quality defects such as liquid leakage and uneven cladding in continuous casting production, which poses a safety hazard, and there are still quality problems such as cracks, shrinkage and sand holes in the produced copper clad steel billets.

[0003] With the development of computer simulation software, numerical simulation technology has gradually matured, and it has been able to simulate actual production such as continuous casting, which plays a key role in simulating the solidification heat transfer process of copper clad steel horizontal continuous casting and ensuring the quality of copper clad steel billets. However, under the condition of such rich numerical simulation technology, most of the domestic horizontal continuous casting research focuses on the continuous casting of ferrous metals, and the research on non-ferrous metals and composite metals is relatively less, and there is a lack of attention. The research on copper clad steel horizontal continuous casting is even less.

[0004] Therefore, in order to avoid the occurrence of safety accidents in continuous casting production and improve the quality of copper clad steel billets, it is very necessary to use numerical simulation technology to analyze the solidification heat transfer of copper clad steel horizontal continuous casting, and it is very necessary to establish a three-dimensional solidification heat transfer model of the crystallizer and the copper clad steel billet for calculation and analysis of copper clad steel horizontal continuous casting, which has important theoretical significance and engineering application value. SUMMARY

[0005] The purpose of the present application is to avoid the occurrence of safety accidents in continuous casting production and improve the quality of copper clad steel billets. The present application provides a copper clad steel horizontal continuous casting solidification heat transfer analysis method based on numerical simulation technology. The method aims to study the change of the temperature of the crystallizer and the copper clad steel billet with position and continuous casting time in the solidification process of copper clad steel horizontal continuous casting, so as to optimize the continuous casting process, improve the quality of copper clad steel billets, predict high-risk areas in the solidification process, and guide copper clad steel horizontal continuous casting production.

[0006] Technical scheme: A copper clad steel horizontal continuous casting solidification heat transfer analysis method based on numerical simulation technology, the specific steps are as follows:

[0007] Step 1: Determine the modeling parameters according to the structure and size data of the crystallizer and the copper clad steel billet in the copper clad steel horizontal continuous casting process, and establish a three-dimensional geometric model of the crystallizer and the copper clad steel billet by using three-dimensional modeling software;

[0008] Step 2: Import the crystallizer and copper-coated steel billet three-dimensional geometric model into the finite element analysis software, set the mesh parameters, divide the mesh, set the condition parameters, solve the temperature field of the copper liquid in the crystallizer, and calculate and analyze;

[0009] Step 3: According to the key process parameters, a solidification heat transfer model of the crystallizer and the copper-coated steel billet is established for the solidification heat transfer problem of the copper-coated steel horizontal continuous casting, and the calculation results in step 2 are loaded as the initial temperature into the solidification heat transfer model;

[0010] Step 4: The solidification heat transfer model of the crystallizer and the copper-coated steel billet is used to calculate the solidification heat transfer of the copper-coated steel horizontal continuous casting;

[0011] Step 5: Data analysis and visualization processing are performed on the solidification heat transfer calculation results of the copper-coated steel horizontal continuous casting.

[0012] Further, in step 2, the setting of the mesh parameters refers to testing the mesh size under the premise of considering the element information, node information and boundary information of the crystallizer and the copper-coated steel billet three-dimensional geometric model, and continuously encrypting the mesh until the maximum stress of the encrypted model and the stress before encryption differ by less than 5%, that is, the mesh size is considered to have reached convergence. Further, in step 2, the setting of the condition parameters includes setting the initial conditions, boundary conditions and physical property parameters;

[0013] The initial conditions refer to the temperature distribution of the crystallizer and the copper-coated steel billet when the copper liquid fills the mold and starts to solidify in the crystallizer;

[0014] The boundary conditions refer to considering the convective heat transfer coefficient of the crystallizer and the cooling water, and ignoring the air gap and heat conduction between the crystallizer and the copper-coated steel billet due to thermal expansion and contraction;

[0015] The physical property parameters refer to the density, thermal conductivity and specific heat capacity of the crystallizer and the copper-coated steel billet.

[0016] Further, in step 3, the key process parameters include the first cooling water flow rate, the second cooling water flow rate, the casting speed and the continuous casting temperature;

[0017] The copper-coated steel horizontal continuous casting process includes a water cooling system composed of a first cooling zone and a second cooling zone; the cooling water of the first cooling zone is used to cool the copper jacket, so that the copper liquid cools and solidifies to coat the steel core during the continuous casting process; the cooling water of the second cooling zone is used to cool the copper-coated steel billet;

[0018] The first cooling water flow rate refers to the cooling water flow rate of the first cooling zone during the horizontal continuous casting process, and the second cooling water flow rate refers to the cooling water flow rate of the second cooling zone during the horizontal continuous casting process.

[0019] Further, step 3 includes the following steps:

[0020] Step 3.1: establish the heat conduction equation of the three-dimensional transient temperature field;

[0021] Step 3.2: establish a three-dimensional solidification heat transfer model;

[0022] Step 3.3: establish a four-node tetrahedral element, and perform heat transfer analysis based on the element for different boundary conditions.

[0023] Further, in the step 3.1, the heat conduction equation of the three-dimensional transient temperature field refers to that in the copper-coated steel horizontal continuous casting solidification process, the temperature distribution of the casting blank in the crystallizer depends on the heat flow inside and the heat exchange outside, the crystallizer provides sufficient cooling effect for the casting blank under the action of the external cold zone and the second cold zone, and the temperature of the casting blank changes all the time.

[0024] Further, in the step 3.2, the three-dimensional solidification heat transfer model refers to a heat transfer process model in which the temperature of the crystallizer and the copper-coated steel blank changes with position and time in three-dimensional space.

[0025] Further, in the step 3.3, the four-node tetrahedral element refers to a four-node tetrahedral heat transfer element established in a three-dimensional space in a counterclockwise direction with four nodes.

[0026] Further, in the step 5, the visualization processing refers to inputting the solidification heat transfer calculation result data into the Origin software to analyze the reliability and safety of the copper-coated steel horizontal continuous casting solidification process from the data chart angle.

[0027] Further, in the step 2, the finite element analysis software is the casting analysis software ProCAST and the finite element analysis software ANSYS.

[0028] Beneficial effects: compared with the prior art, the present application has the following remarkable advantages:

[0029] (1) In the present application, through the finite element analysis software, the simulation is closer to reality, and the copper-coated steel horizontal continuous casting can be dynamically simulated.

[0030] (2) Using the three-dimensional solidification heat transfer model, the heat, flow and stress can be coupled and calculated, and the result is more accurate;

[0031] (3) Different types of metal horizontal continuous casting can be numerically simulated according to different initial conditions, boundary conditions, physical parameters and process parameters;

[0032] (4) Stress analysis of the model can predict the high-risk area in the solidification process, and has a good guiding effect on continuous casting production. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1A flowchart of the present application;

[0034] Figure 2 A three-dimensional model diagram of the crystallizer and copper-coated steel billet;

[0035] Figure 3 A finite element model diagram of the crystallizer and copper-coated steel billet;

[0036] Figure 4 A temperature distribution cloud diagram of different positions of the model;

[0037] Figure 5 A solid-liquid region proportion diagram of the solidification process;

[0038] Figure 6 A forming zone analysis diagram under different process parameters;

[0039] Corresponding reference signs: A-Contact zone; B-Solidification zone; C-Forming zone. DETAILED DESCRIPTION

[0040] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings, but the protection scope of the present application is not limited to the embodiments.

[0041] The three-dimensional solidification heat transfer model of the crystallizer and copper-coated steel billet of the present application is used to calculate and analyze the temperature field changes in the copper-coated steel horizontal continuous casting solidification process.

[0042] As shown in Figure 1 , the copper-coated steel horizontal continuous casting solidification heat transfer analysis method based on numerical simulation technology of the present application specifically includes the following steps:

[0043] Step 1: Determine the modeling parameters according to the structure and size data of the crystallizer and copper-coated steel billet in the copper-coated steel horizontal continuous casting process, and use three-dimensional modeling software to establish a three-dimensional geometric model of the crystallizer and copper-coated steel billet;

[0044] In this example, the crystallizer is assembled by a graphite outer sleeve, a steel core and a copper sleeve, the steel core passes through the graphite outer sleeve, and the copper sleeve is fixed on the surface of the graphite outer sleeve. The three-dimensional model diagram is shown in Figure 2 , and the detailed structure data is shown in Table 1.

[0045] Table 1 Geometric model data table of the crystallizer

[0046]

[0047] Step 2: Import the three-dimensional geometric model of the crystallizer and copper-coated steel billet into the finite element analysis software, set the mesh parameters, divide the mesh, set the condition parameters, solve the temperature field of the copper liquid in the crystallizer, and calculate and analyze;

[0048] The setting grid parameter refers to carrying out grid size test under the premise of considering the element information, node information and boundary information of the three-dimensional geometric model of the crystallizer and the copper clad steel billet, continuously encrypting the grid, until the maximum stress of the encrypted model and the stress before encryption differ by less than 5%, that is, the grid size is considered to reach convergence; under the premise of considering smaller calculation amount, in order to obtain more accurate results, according to the geometric structure characteristics of the crystallizer, the grid division adopts four-node tetrahedral element, the grid element length is set to 4, and the total number of elements of the final geometric model is 28730, and the total number of nodes is 106792. The generated three-dimensional finite element model of the crystallizer and the copper clad steel billet is as shown in Figure 3 .

[0049] The setting condition parameter includes setting initial condition, boundary condition and physical property parameter;

[0050] The initial condition refers to the temperature distribution of the crystallizer and the copper clad steel billet when the copper liquid fills the mold and starts to solidify (t=0), that is, T=f(x,y,z,t) t＝0 , wherein T is the instantaneous temperature of the crystallizer and the copper clad steel billet, t is time, x, y and z are coordinates in a rectangular coordinate system, and f(x,y,z,t) is a temperature function changing with time, so the initial condition takes the temperature of the crystallizer and the copper clad steel billet at the start of solidification, and the initial temperature of the crystallizer and the copper clad steel billet is set to 1150°C, and the initial temperature of the steel core and the copper sleeve is set to 550°C. The detailed initial condition is shown in Table 2.

[0051] Table 2 Initial condition

[0052]

[0053] The boundary condition refers to considering the convective heat transfer coefficient of the crystallizer and the cooling water, and ignoring the air gap and heat conduction between the crystallizer and the copper clad steel billet due to thermal expansion and cold shrinkage; in this example, it mainly refers to the water cooling system composed of a cold zone and a second cold zone in the horizontal continuous casting process. The cooling water of the cold zone is used to cool the copper sleeve, so that the copper liquid cools and solidifies to coat on the steel core in the continuous casting process, and the cooling water of the second cold zone is used to cool the copper clad steel billet, so that the copper clad steel billet is further cooled. Since the present application studies the solidification process of the copper liquid in the crystallizer, the convective heat transfer coefficient of the copper clad steel billet and the secondary cooling water drawn from the crystallizer is ignored.

[0054] The boundary condition of the cold zone is set, and the convective heat transfer coefficient is determined by the following dimensionless equation:

[0055]

[0056] Wherein, hw is the convective heat transfer coefficient of the crystallizer and the cooling water of the cold zone, W / (m 2 ·K), D Hm is the mechanical diameter of the cooling water gap; Kw is the thermal conductivity of the cooling water, J / (Kg·K); pw is the density of the cooling water, Kg / m 3 ; uw is the flow rate of the cooling water, m / s; μw is the viscosity coefficient of the cooling water, Kg / m·s; Cw is the specific heat capacity of the cooling water, J / (Kg·K).

[0057] The flow rate of the cooling water is represented by the following formula:

[0058]

[0059] Q1 is the cooling water flow rate of the first cooling zone, m 3 / h; A is the flow cross-sectional area of the water, m 2 .

[0060] The mechanical diameter of the cooling water gap is represented by the following formula:

[0061]

[0062] S is the circumference of the copper sleeve surrounded by the cooling water, mm.

[0063] The physical property parameters refer to the density, thermal conductivity and specific heat capacity of the crystallizer and the copper clad steel billet. At a normal temperature of 20℃, the specific physical property parameters of the crystallizer and the copper clad steel copper layer are shown in Table 3.

[0064] Table 3 Physical property parameters

[0065]

[0066] Step 3: According to the key process parameters, a solidification heat transfer model of the crystallizer and the copper clad steel billet is established for the solidification heat transfer problem of the copper clad steel horizontal continuous casting, and the calculation results in step 2 are loaded as the initial temperature into the solidification heat transfer model; the key process parameters include the first cooling water flow rate, the second cooling water flow rate, the billet drawing speed and the continuous casting temperature, and the detailed parameters are shown in Table 4.

[0067] The first cooling water flow rate refers to the cooling water flow rate of the first cooling zone in the horizontal continuous casting process, and the second cooling water flow rate refers to the cooling water flow rate of the second cooling zone in the horizontal continuous casting process.

[0068] Table 4 Process parameters

[0069]

[0070] The step 3 includes the following steps:

[0071] Step 3.1: Establishing a heat conduction equation of a three-dimensional transient temperature field;

[0072] The heat conduction equation for the three-dimensional transient temperature field refers to the fact that during the solidification process of copper-clad steel horizontal continuous casting, the temperature distribution of the billet inside the crystallizer depends on the heat flow within the billet and the heat exchange with the outside. The crystallizer provides sufficient cooling to the billet through the external primary and secondary cooling zones, and the billet temperature is constantly changing. Therefore, the heat conduction equation for the three-dimensional transient temperature field is applied to analyze the temperature field variation law during the solidification process of copper-clad steel horizontal continuous casting.

[0073] Copper-clad steel horizontal continuous casting is a three-dimensional heat transfer problem with an internal heat source, and its differential equation for heat conduction can be expressed as follows:

[0074]

[0075] In the formula, x, y, z are coordinates in a rectangular coordinate system; t is time; T is the instantaneous temperature of the crystallizer and the copper-clad steel billet, in °C; ρ is the density of the molten copper, in g / cm³. 3 c is the specific heat capacity of the cast billet, J / Kg·℃; k is the heat transfer coefficient of the cast billet, W / m·℃; q b It serves as the internal heat source for the solidification of molten copper.

[0076] Assuming thermal conduction is isotropic and ignoring internal heat sources, i.e., k x =k y =k z =k,q b If = 0, then the above expression can be simplified to:

[0077]

[0078] Step 3.2: Establish a three-dimensional solidification heat transfer model; the three-dimensional solidification heat transfer model refers to the heat transfer process model in which the temperature of the crystallizer and the copper-clad steel billet changes with position and time in a three-dimensional volume.

[0079] Step 3.3: Establish a four-node tetrahedral element and perform heat transfer analysis on different boundary conditions based on this element; the four-node tetrahedral element refers to a four-node tetrahedral heat transfer element established in a three-dimensional space with four nodes in a counterclockwise direction.

[0080] Step 4: Perform solidification heat transfer calculations for horizontal continuous casting of copper-clad steel using a crystallizer and a solidification heat transfer model of copper-clad steel billets.

[0081] The solidification heat transfer calculation in this example yielded temperature distribution cloud maps for the crystallizer and the copper-clad steel billet, as shown below. Figure 4 As shown in the figure, the heat gradually decreases from the head to the tail of the crystallizer due to the cooling effect of the crystallizer and cooling water. As continuous casting continues, the copper liquid in the crystallizer also cools down and solidifies under the cooling effect, coating the steel core to form a copper-coated steel billet. The calculated solidification heat transfer results are basically consistent with the actual temperature.

[0082] The solidification process of molten copper in the crystallizer can be divided into three states:

[0083] (1) Contact state: In this process, the molten copper comes into contact with the steel core and begins to solidify; (2) Solidification and shrinkage state: In this process, the molten copper gradually solidifies under the water cooling effect of the crystallizer and covers the steel core; (3) Forming state: In this process, the molten copper fully solidifies and covers the steel core, forming a copper-clad steel billet. Therefore, the space occupied by these three states can be divided into three areas: contact area, solidification area, and forming area. The total length of the crystallizer is 360mm, according to Figure 4 The temperature distribution and production verification are as follows: the contact zone is denoted as A, with a length of 80 mm; the solidification zone is denoted as B, with a length of 230 mm; and the forming zone is denoted as C, with a length of 50 mm. Figure 5 As shown. To ensure the safety of horizontal continuous casting and the quality of copper-clad steel billets, the length of the forming zone C must be approximately 50 mm, with a safe range of 45-65 mm. An excessively long forming zone C indicates insufficient solidification, which may affect the quality of the copper-clad steel; an excessively short zone indicates insufficient cooling, resulting in a slow solidification rate of the molten copper, which may cause safety accidents such as continuous casting leakage.

[0084] Step 5: Perform data analysis and visualization on the solidification heat transfer calculation results of copper-clad steel horizontal continuous casting.

[0085] In actual continuous casting production, the structures of the crystallizer and copper-clad steel billet are fixed and cannot be changed. If adjustments to the continuous casting production are needed, they can usually be made by changing the process parameters. Therefore, it is essential to analyze the impact of changes in process parameters on the solidification heat transfer of copper-clad steel horizontal continuous casting. Furthermore, under the premise of ensuring safe production, using the length of the forming zone C as a standard, the length of the forming zone C is extracted from the temperature cloud map of the solidification heat transfer calculation results and imported into Origin software to analyze the production quality and safety of copper-clad steel horizontal continuous casting from a visual perspective.

[0086] Visualization of the processing results Figure 6 As shown in the figure, the solidification heat transfer process of copper-clad steel horizontal continuous casting is affected by the primary cooling water flow rate, the secondary cooling water flow rate, the billet pulling speed, and the continuous casting temperature. Among them, the curves of the billet pulling speed and the continuous casting temperature have large oscillation amplitudes and are negatively correlated with the length of the forming zone C, indicating a significant impact. In contrast, the primary and secondary cooling water flow rates are positively correlated with the length of the forming zone C, indicating a smaller impact.

[0087] The finite element analysis software mentioned in step 2 of this invention is the casting analysis software ProCAST and the finite element analysis software ANSYS, which can perform dynamic simulation of copper-clad steel horizontal continuous casting, and the simulation is closer to reality.

[0088] The present application studies the related problems of copper clad steel horizontal continuous casting solidification process, sets up a solidification heat transfer model based on the casting analysis software ProCAST and the finite element analysis software ANSYS, sets reasonable parameters, combines with the actual production, fully restores the solidification process of copper clad steel horizontal continuous casting by using the numerical simulation technology, guarantees the accuracy of finite element calculation, and more accurately simulates the process of solidification heat transfer. The numerical simulation technology is used for solidification heat transfer analysis of copper clad steel horizontal continuous casting, its advantages are played, the distribution of temperature field in the solidification process and the process of the change of the organization performance of each part with time are simulated, stress analysis is carried out on the model, the high-risk area in the solidification process can be predicted, and the continuous casting production has a good guiding role.

[0089] Those skilled in the art can understand that the above description is only preferred examples of the present application and is not used to limit the present application, although the present application is described in detail with reference to the foregoing examples, those skilled in the art can still modify the technical solutions recorded in the foregoing examples or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for analyzing solidification heat transfer of copper over steel horizontal continuous casting based on numerical simulation technique, characterized by, The specific steps are as follows: Step 1: Determine the modeling parameters according to the structure and size data of the crystallizer and copper-coated steel billet in the copper-coated steel horizontal continuous casting process, and establish a three-dimensional geometric model of the crystallizer and copper-coated steel billet using three-dimensional modeling software; the crystallizer is assembled by a graphite jacket, a steel core and a copper jacket, the steel core passes through the graphite jacket, and the copper jacket is fixed on the surface of the graphite jacket; Step 2: Import the three-dimensional geometric model of the crystallizer and copper-coated steel billet into the finite element analysis software, set the mesh parameters, divide the mesh, set the condition parameters, solve the temperature field of the copper liquid in the crystallizer, and calculate and analyze; Step 3: According to the key process parameters, a solidification heat transfer model of the crystallizer and copper-coated steel billet is established for the solidification heat transfer problem of copper-coated steel horizontal continuous casting, and the calculation results in step 2 are loaded as the initial temperature into the solidification heat transfer model; In step 3, the key process parameters include the first cooling water flow, the second cooling water flow, the casting speed and the continuous casting temperature; The copper-coated steel horizontal continuous casting process includes a water cooling system composed of a first cooling zone and a second cooling zone; the cooling water of the first cooling zone is used to cool the copper jacket, so that the copper liquid cools and solidifies to coat on the steel core during the continuous casting process; the cooling water of the second cooling zone is used to cool the copper-coated steel billet; the first cooling water flow refers to the cooling water flow of the first cooling zone during the horizontal continuous casting process, and the second cooling water flow refers to the cooling water flow of the second cooling zone during the horizontal continuous casting process; Step 3 includes the following steps: Step 3.1: Establish a heat conduction equation of a three-dimensional transient temperature field; Step 3.2: Establish a three-dimensional solidification heat transfer model; Step 3.3: Establish a four-node tetrahedral element, and conduct heat transfer analysis based on the element for different boundary conditions; Step 4: Use the solidification heat transfer model of the crystallizer and copper-coated steel billet to calculate the solidification heat transfer of the copper-coated steel horizontal continuous casting; Step 5: Data analysis and visualization processing is performed on the solidification heat transfer calculation results of the copper-coated steel horizontal continuous casting.

2. The method of claim 1, wherein the method is characterized by: In step 2, the setting of the mesh parameters refers to testing the mesh size under the premise of considering the element information, node information and boundary information of the three-dimensional geometric model of the crystallizer and copper-coated steel billet, and continuously encrypting the mesh until the maximum stress of the encrypted model and that before encryption differ by less than 5%, that is, the mesh size is considered to have reached convergence.

3. The copper-coated steel horizontal continuous casting solidification heat transfer analysis method based on numerical simulation technology according to claim 1, characterized in that, In step 2, the setting of the condition parameters includes setting the initial condition, the boundary condition and the physical property parameter; The initial condition refers to the temperature distribution of the crystallizer and the copper-coated steel billet when the copper liquid fills the mold and starts to solidify in the crystallizer; The boundary condition refers to considering the convective heat transfer coefficient of the crystallizer and the cooling water, and ignoring the air gap and heat conduction between the crystallizer and the copper-coated steel billet due to thermal expansion and contraction; The physical property parameter refers to the density, thermal conductivity and specific heat capacity of the crystallizer and the copper-coated steel billet.

4. The copper-coated steel horizontal continuous casting solidification heat transfer analysis method based on numerical simulation technology according to claim 1, characterized in that, In the step 3.1, the heat conduction equation of the three-dimensional transient temperature field refers to the temperature distribution of the casting blank in the crystallizer during the copper-coated steel horizontal continuous casting solidification process, which depends on the heat flow inside and the heat exchange outside, and the crystallizer provides sufficient cooling effect for the casting blank under the action of the external cold zone and the secondary cooling zone, and the temperature of the casting blank changes all the time.

5. The method of claim 1, wherein the method is characterized by: In the step 3.2, the three-dimensional solidification heat transfer model refers to a heat transfer process model in which the temperature of the crystallizer and the copper-coated steel blank changes with the position and time in the three-dimensional body.

6. The method of copper clad steel horizontal continuous casting solidification heat transfer analysis based on numerical simulation technique as claimed in claim 1, wherein, In the step 3.3, the four-node tetrahedral element refers to a four-node tetrahedral heat transfer element established in the three-dimensional space according to the counterclockwise direction with four nodes.

7. The method of claim 1, wherein the method is characterized by: In the step 5, the visualization processing refers to inputting the solidification heat transfer calculation result data into the Origin software to analyze the reliability and safety of the copper-coated steel horizontal continuous casting solidification process from the data chart angle.

8. The method of copper clad steel horizontal continuous casting solidification heat transfer analysis based on numerical simulation technique as claimed in claim 1, wherein, In the step 2, the finite element analysis software is the casting analysis software ProCAST and the finite element analysis software ANSYS.

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