Electrochemical jet machining electric field simulation method and device, equipment and medium

Abstract

The present disclosure relates to an electric field simulation method and device for electrochemical jet machining, electronic equipment and computer readable storage medium, relates to the technical field of computer simulation, and can be applied to the scene of electrochemical jet machining. The method comprises the following steps: constructing a modeling domain of a geometric model of a gas film hole machining process, the modeling domain being generated based on a jet field of electrolyte; determining a model feature of the geometric model, constructing a jet electric field model based on the modeling domain and the model feature; determining model parameters and model boundary conditions corresponding to the jet electric field model; based on the model parameters and the model boundary conditions, simulating the jet electric field model to obtain a hole geometry at different times, the hole geometry being used to reflect the correlation between the model parameters and the hole machining process quality. The present disclosure establishes a jet electric field model in electrochemical jet machining and performs simulation calculation, thereby analyzing the influence of each model parameter on the hole machining quality, and providing an effective scheme for improving the hole machining quality.

Description

Technical Field

[0001] This disclosure relates to the field of computer simulation technology, and more specifically, to an electric field simulation method for electrochemical jet processing, an electric field simulation device for electrochemical jet processing, an electronic device, and a computer-readable storage medium. Background Technology

[0002] Modern aero-engine design continuously pursues high thrust-to-weight ratios and high efficiency, leading to a constant increase in turbine inlet temperature. Turbine inlet temperature, or combustion chamber outlet temperature, to a certain extent represents the technological level of a generation of aero-engines. The high-pressure turbine blades must not only possess extremely high temperature resistance but also maintain sufficient strength and lifespan under extreme operating conditions of powerful exhaust flow and high-speed centrifugal force. Turbine blades generally utilize directionally solidified high-temperature alloys or single-crystal alloys to ensure the material's inherent high-temperature resistance. Structurally, they employ a zero-margin precision-cast hollow structure and incorporate numerous film cooling holes to create a cooler film of gas, providing both insulation and cooling.

[0003] Among various hole-making processes, electrohydraulic beam machining is a cold working method based on the principle of electrochemical anodic dissolution. This machining method does not require a shaped cathode electrode tool that is identical to the workpiece shape, and it also causes no wear or damage to the tool cathode, thus offering high flexibility and convenience.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this disclosure is to provide an electric field simulation method, an electric field simulation device, an electronic device, and a computer-readable storage medium for electrochemical jet processing, thereby at least to some extent overcoming the problem that changes in the surface quality and morphology of small holes may occur in actual hole making due to the influence of parameter selection and stability in electro-hydraulic jet hole making process, resulting in phenomena such as flared mouth and overlapping hole edges.

[0006] Other features and advantages of this disclosure will become apparent from the following detailed description, or may be learned in part by practice of the invention.

[0007] According to a first aspect of this disclosure, an electric field simulation method for electrochemical jet processing is provided, comprising: constructing a modeling domain for a geometric model of a film-forming hole fabrication process, the modeling domain being generated based on the jet field of an electrolyte; determining model features of the geometric model; constructing a jet electric field model based on the modeling domain and the model features; determining model parameters and model boundary conditions corresponding to the jet electric field model; and performing simulation calculations on the jet electric field model based on the model parameters and the model boundary conditions to obtain hole geometry at different times, wherein the hole geometry is used to reflect the correlation between the model parameters and the quality of the hole fabrication process.

[0008] In one exemplary embodiment of this disclosure, the step of constructing a jet electric field model based on the modeling domain and the model features includes: determining the model symmetry mode of the geometric model according to the model features; determining the physical field configuration information corresponding to the geometric model; constructing an initial jet electric field model according to the modeling domain, the model symmetry mode and the physical field configuration information; and performing geometric deformation processing on the initial jet electric field model to obtain the jet electric field model.

[0009] In one exemplary embodiment of this disclosure, the step of geometrically deforming the initial jet electric field model to obtain the jet electric field model includes: applying a pre-configured potential difference between the anode workpiece and the cathode tool in the film pore forming process; determining the initial geometry of the jet electric field model based on the potential difference; and introducing a rectangular seed deformation into the initial geometry to obtain the jet electric field model.

[0010] In one exemplary embodiment of this disclosure, the model parameters include the boundary geometric deformation rate. Determining the model parameters and model boundary conditions corresponding to the jet electric field model includes: configuring corresponding electrode voltages for the anode workpiece and the cathode tool, and the anode and the cathode having the same equilibrium potential; determining the boundary geometric deformation rate generated in the normal direction by the electrode reaction of the anode workpiece under the electrode voltage; and determining the model boundary conditions based on the geometric deformation characteristics of the jet electric field model.

[0011] In one exemplary embodiment of this disclosure, determining the boundary geometric deformation rate generated by the electrode reaction of the anode workpiece in the normal direction includes: determining the local current density of the electrode reaction; obtaining electrode reaction parameters associated with the electrode reaction, the electrode reaction parameters including stoichiometric coefficients, molar mass, dissolved substance density, number of electrons in the dissolution reaction, and Faraday constant; and determining the boundary geometric deformation rate based on the local current density and the electrode reaction parameters.

[0012] In one exemplary embodiment of this disclosure, determining the local current density of the electrode reaction includes: acquiring the current distribution corresponding to the electrode reaction, determining the boundary normal and electrolyte current density vector corresponding to the current distribution, and determining the local current density based on the boundary normal and the electrolyte current density vector.

[0013] In one exemplary embodiment of this disclosure, the step of simulating the jet electric field model based on the model parameters and the model boundary conditions to obtain the orifice geometry at different times includes: determining the simulation time interval for simulating the jet electric field model; selecting simulation time points based on the simulation time interval; determining the model state of the jet electric field model at different simulation time points under the model boundary conditions, and obtaining simulation result diagrams; the simulation result diagrams include electrolyte potential diagrams, electrolyte current density diagrams, and orifice shape diagrams; obtaining the orifice geometry based on the orifice shape diagrams; and determining the model parameters to be adjusted based on the orifice geometry.

[0014] According to a second aspect of this disclosure, an electric field simulation device for electrochemical jet processing is provided, comprising: a modeling domain construction module for constructing a modeling domain for a geometric model of a film pore forming process, the modeling domain being generated based on the jet field of an electrolyte; a model construction module for determining model features of the geometric model and constructing a jet electric field model based on the modeling domain and the model features; a parameter condition determination module for determining model parameters and model boundary conditions corresponding to the jet electric field model; and a simulation calculation module for performing simulation calculations on the jet electric field model based on the model parameters and the model boundary conditions to obtain the hole geometry at different times, the hole geometry being used to reflect the correlation between the model parameters and the quality of the pore forming process.

[0015] In one exemplary embodiment of this disclosure, the model building module includes a model building unit, configured to: determine the model symmetry mode of the geometric model based on the model features; determine the physical field configuration information corresponding to the geometric model; construct an initial jet electric field model based on the modeling domain, the model symmetry mode, and the physical field configuration information; and perform geometric deformation processing on the initial jet electric field model to obtain the jet electric field model.

[0016] In one exemplary embodiment of this disclosure, the model building unit includes a model building subunit for: applying a pre-configured potential difference between the anode workpiece and the cathode tool in the film pore forming process; determining the initial geometry of the jet electric field model based on the potential difference; and introducing a rectangular seed deformation into the initial geometry to obtain the jet electric field model.

[0017] In one exemplary embodiment of this disclosure, the model parameters include the boundary geometric deformation rate, and the parameter condition determination module includes a parameter condition determination unit, used for: configuring corresponding electrode voltages for the anode workpiece and the cathode tool respectively, and the anode and the cathode having the same equilibrium potential; determining the boundary geometric deformation rate generated by the electrode reaction of the anode workpiece in the normal direction under the electrode voltage; and determining the model boundary conditions according to the geometric deformation characteristics of the jet electric field model.

[0018] In one exemplary embodiment of this disclosure, the parameter condition determination unit includes a deformation rate determination unit, configured to: determine the local current density of the electrode reaction; acquire electrode reaction parameters associated with the electrode reaction, the electrode reaction parameters including stoichiometric coefficients, molar mass, dissolved substance density, number of electrons in the dissolution reaction, and Faraday constant; and determine the boundary geometric deformation rate based on the local current density and the electrode reaction parameters.

[0019] In one exemplary embodiment of this disclosure, the deformation rate determination unit includes a current density determination subunit, configured to: acquire the current distribution corresponding to the electrode reaction; determine the boundary normal and electrolyte current density vector corresponding to the current distribution; and determine the local current density based on the boundary normal and the electrolyte current density vector.

[0020] In one exemplary embodiment of this disclosure, the simulation calculation module includes a simulation calculation unit, configured to: determine a simulation time interval for simulating the jet electric field model; select simulation time points based on the simulation time interval; determine the model state of the jet electric field model at different simulation time points under the model boundary conditions, and obtain a simulation result diagram; the simulation result diagram includes an electrolyte potential diagram, an electrolyte current density diagram, and a hole shape diagram; obtain the hole geometry based on the hole shape diagram; and determine the model parameters to be adjusted based on the hole geometry.

[0021] According to a third aspect of this disclosure, an electronic device is provided, comprising: a processor; and a memory storing computer-readable instructions, which, when executed by the processor, implement the electric field simulation method for electrochemical jet processing according to any one of the preceding claims.

[0022] According to a fourth aspect of this disclosure, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the electric field simulation method for electrochemical jet processing according to any one of the preceding claims.

[0023] The technical solution provided in this disclosure may include the following beneficial effects:

[0024] The electric field simulation method for electrochemical jet processing in the exemplary embodiments of this disclosure, on the one hand, by constructing a jet electric field model and performing simulation calculations, facilitates the acquisition of the influence of different processing parameters on the quality of electro-hydraulic beam hole formation, thereby providing valuable reference for the optimization of the electro-hydraulic beam hole formation process. On the other hand, by establishing a jet electric field model, model parameters can be easily and quickly modified and calculations can be performed, making it suitable for simulation studies under various conditions.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0027] Figure 1 A flowchart illustrating an electric field simulation method for electrochemical jet processing according to an exemplary embodiment of the present disclosure is shown.

[0028] Figure 2 The diagram illustrates the process of establishing a jet electric field according to an exemplary embodiment of the present disclosure;

[0029] Figure 3 A schematic diagram illustrating the geometry of a jet electric field model according to an exemplary embodiment of the present disclosure is shown.

[0030] Figure 4 An electrolyte potential diagram of a jet electric field model according to an exemplary embodiment of the present disclosure is illustrated schematically.

[0031] Figure 5 An electrolyte current density diagram of a jet electric field model according to an exemplary embodiment of the present disclosure is schematically shown.

[0032] Figure 6 The diagram schematically illustrates the hole geometry of a hole-making process according to an exemplary embodiment of the present disclosure;

[0033] Figure 7 A block diagram of an electric field simulation apparatus for electrochemical jet processing according to an exemplary embodiment of the present disclosure is shown schematically.

[0034] Figure 8 A block diagram of an electronic device according to an exemplary embodiment of the present disclosure is shown schematically;

[0035] Figure 9 The illustration shows a schematic diagram of a computer-readable storage medium according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0036] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0037] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details described, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known structures, methods, apparatuses, implementations, materials, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0038] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, or in one or more software-hardened modules, or in different network and / or processor devices and / or microcontroller devices.

[0039] Electrohydraulic beam drilling, in principle, guarantees the technical requirements of no recast layer, no microcracks, and no heat-affected zone on the micro-hole surface. However, due to the influence of parameter selection and stability, variations in the surface quality and morphology of the micro-hole can occur during actual drilling. For example, parameter fluctuations can cause ripples on the hole wall, and drastic changes in processing conditions at the inlet and outlet can lead to flaring or overlapping hole edges. Electrohydraulic beam drilling is a complex process involving both anodic metal dissolution and chemical processing. In actual processing, the amount of metal removed is far greater than the sum of the metal removed by electrochemical and chemical processes as calculated according to Faraday's law, and the current density is also greater than the current density required for stable bubble formation under ordinary electrochemical processing conditions.

[0040] Based on this, embodiments of the present disclosure provide an electric field simulation method for electrochemical jet processing, an electric field simulation device for electrochemical jet processing, a computer-readable medium, and an electronic device.

[0041] In this article, it is important to understand the terms used, such as electrohydraulic beam. Electrohydraulic beam machining is a micro-electrochemical machining method that uses a nozzle to spray charged electrolyte to dissolve the metal material of the anode. It has advantages such as zero tool and cathode wear, no macroscopic cutting force, and suitability for machining various difficult-to-cut materials and thin-walled parts.

[0042] In this example embodiment, an electric field simulation method for electrochemical jet processing is first provided. The electric field simulation method for electrochemical jet processing disclosed herein can be implemented using a server or using a terminal device. The terminal described in this disclosure may include mobile terminals such as mobile phones, tablets, laptops, handheld computers, and personal digital assistants (PDAs), as well as fixed terminals such as desktop computers. Figure 1 A schematic diagram illustrating the flow of an electric field simulation method for electrochemical jet processing according to some embodiments of the present disclosure is shown. Reference Figure 1 The electric field simulation method for electrochemical jet processing may include the following steps:

[0043] Step S110: Construct the modeling domain of the geometric model of the air film pore fabrication process. The modeling domain is generated based on the jet field of the electrolyte.

[0044] According to some exemplary embodiments of this disclosure, the modeling domain may be the range of values ​​or the set of possible values ​​of data elements during the modeling process.

[0045] To analyze the impact of various processing parameters on the quality of electro-hydraulic jet orifice formation, this embodiment establishes a jet electric field model for electro-hydraulic jet orifice formation. Before model construction, the modeling domain corresponding to the geometric model can be constructed. Due to the high conductivity of the metal, the potential gradient in the electrode is expected to be very small, therefore the electrode domain is not included in the model; furthermore, the insulating layer is electrochemically inert and is also excluded. During the modeling process, the only selected modeling domain is the electrolyte, and the influence of the electrode domain and the insulating layer is not considered. The modeling domain can be generated based on the jet field of the electrolyte.

[0046] Step S120: Determine the model characteristics of the geometric model, and construct the jet electric field model based on the modeling domain and model characteristics.

[0047] According to some exemplary embodiments of this disclosure, the geometric model can be a model reflecting the geometry of the hole obtained in the electro-hydraulic beam hole-making process. Model features can be specific morphological features of the geometric model. The jet electric field model can be a model generated based on the primary current distribution of the electrolyte constructed according to the model features, within the modeling domain.

[0048] After determining the modeling domain of the geometric model, the model characteristics are then defined. For example, the model symmetry can be selected in the model creation configuration interface based on these characteristics. The physical fields can be configured according to the research content, and then a jet electric field model can be constructed based on the modeling domain, model characteristics, and relevant information from the physical field configuration.

[0049] Step S130: Determine the model parameters and boundary conditions corresponding to the jet electric field model.

[0050] According to some exemplary embodiments of this disclosure, model parameters may be parameters related to the jet electric field model. Model boundary conditions refer to the variation of variables of the model with time and location at the boundary of the solution domain.

[0051] After constructing the jet electric field model, the electrolytic cell can be simulated using the primary current distribution based on the electrolyte flow characteristics. The boundary geometric deformation rate generated by the anode-electrode reaction in the normal direction can be determined. The model parameters used to solve the boundary geometric deformation rate are defined, and the model boundary conditions are set as follows: the movement of all boundaries except the anode in the normal direction is zero, and there is no deformation of the two electrode boundaries.

[0052] Step S140: Based on the model parameters and model boundary conditions, the jet electric field model is simulated and calculated to obtain the hole geometry at different times. The hole geometry is used to reflect the correlation between the model parameters and the hole-making process quality.

[0053] According to some exemplary embodiments of this disclosure, the hole geometry can be the geometric deformation of the hole generated at different time points in the hole-making process.

[0054] Under the constraints of the aforementioned model boundary conditions, simulation calculations are performed on the jet electric field model based on the model parameters. For example, a 1-second transient simulation study is conducted on the electrochemical machining of holes, yielding electrolyte potential diagrams, electrolyte current density diagrams, and hole shape diagrams. From the hole shape diagrams, the hole geometry at different times can be determined. Since the hole geometry reflects the correlation between model parameters and hole-making process quality, based on the aforementioned correlation and the variation characteristics of hole geometry at different times, the influence of different model parameters on hole-making process quality can be analyzed, thus providing effective data support for the optimization of the hole-making process.

[0055] According to the electric field simulation method for electrochemical jet processing in this example embodiment, on the one hand, by constructing a jet electric field model and performing simulation calculations, it is beneficial to obtain the influence of different processing parameters on the quality of electro-hydraulic beam hole making, thus providing valuable reference for the optimization of electro-hydraulic beam hole making process. On the other hand, by establishing a jet electric field model, the model parameters can be easily and quickly changed and calculations can be performed, making it suitable for simulation studies under various conditions.

[0056] The electric field simulation method for electrochemical jet processing in this example embodiment will be further explained below.

[0057] In one exemplary embodiment of this disclosure, a jet electric field model is constructed based on the modeling domain and model features, including: determining the model symmetry mode of the geometric model according to the model features; determining the physical field configuration information corresponding to the geometric model; constructing an initial jet electric field model according to the modeling domain, model symmetry mode and physical field configuration information; and performing geometric deformation processing on the initial jet electric field model to obtain the jet electric field model.

[0058] Here, model symmetry can be determined based on the model's axis of symmetry. A physical field refers to the distribution of physical properties existing in space, exerting forces on matter. Physical field configuration information can be information generated during the modeling process by configuring the physical field. The initial jet electric field model can be an initial model constructed based on the determined modeling domain, model symmetry, and physical field configuration information. Geometric deformation processing can be related operations that introduce other types of geometric deformations into the initial geometry of the geometric model.

[0059] During model building, select the model symmetry method in the model wizard window based on the model characteristics. For example, select two-dimensional axisymmetry. By setting the symmetry method, the computational load of subsequent model calculations can be reduced. Then, based on the research content, select "Electrochemistry to Electroplating," "Deformation Geometry to Electroplating," and primary current in the physics tree to obtain the physics configuration information corresponding to the geometric model.

[0060] refer to Figure 2 , Figure 2 The diagram schematically illustrates the process of establishing a jet electric field according to an exemplary embodiment of the present disclosure. In step S210, a geometric model is established. A modeling domain is selected based on the geometric model, and a jet electric field model is constructed by combining model features with the selected physical fields. After determining the modeling domain, model symmetry, and physical field configuration information, an initial jet electric field model can be constructed by drawing according to the model geometry.

[0061] To avoid singularities at the contact points between the electrolyte and the insulating boundary, and to force zero vertical deformation along the insulator / anode contact line, the initial jet electric field model can be geometrically deformed to obtain a new jet electric field model. Through these steps, a jet electric field model for electro-hydraulic jet hole-making can be established, allowing for subsequent simulations of current distribution and hole shape evolution based on the jet electric field model, and providing a deeper understanding of the influence of various parameters on hole-making quality.

[0062] In one exemplary embodiment of this disclosure, the initial jet electric field model is geometrically deformed to obtain the jet electric field model, including: applying a pre-configured potential difference between the anode workpiece and the cathode tool in the film pore forming process; determining the initial geometry of the jet electric field model based on the potential difference; and introducing a rectangular seed deformation into the initial geometry to obtain the jet electric field model.

[0063] In this context, the electrode where oxidation occurs is called the anode, corresponding to the cathode. Potential difference can be the physical quantity representing the energy difference between the anode workpiece and the cathode tool due to their different potentials. The initial geometry can be the geometry of the model after its initial construction, under the influence of a single current distribution.

[0064] For the initial jet electric field model, the electrolyte enters the electrolytic cell at high speed from the upper boundary and exits through the hole at the bottom boundary. A potential difference of a preset value (e.g., 20V) is applied between the anode workpiece and the cathode tool, causing gas evolution on the cathode and dissolution or removal of metal on the anode. An insulating layer is placed on top of the anode.

[0065] refer to Figure 3 , Figure 3 The diagram schematically illustrates the geometry of a jet electric field model according to an exemplary embodiment of this disclosure. By introducing a small rectangular seed deformation along z=0, extending from the anode into / below the insulating layer, into the initial geometry (t=0), the jet electric field model can be obtained. This is done to avoid singularities at the contact point between the electrolyte and the insulating boundary, and along the insulator / anode contact line (…). Figure 3 The dashed line between the insulating material and the anode workpiece forces zero vertical deformation.

[0066] In one exemplary embodiment of this disclosure, step S130, determining the model parameters and model boundary conditions corresponding to the jet electric field model, includes: configuring corresponding electrode voltages for the anode workpiece and the cathode tool respectively, and the anode and cathode having the same equilibrium potential; determining the boundary geometric deformation rate generated by the electrode reaction of the anode workpiece in the normal direction under the electrode voltage; and determining the model boundary conditions according to the geometric deformation characteristics of the jet electric field model.

[0067] Here, electrode voltage can be the voltage values ​​corresponding to the cathode and anode, respectively. Boundary geometric deformation rate. Geometric deformation characteristics can be the changes in geometric deformation of the two electrode boundaries under the current distribution.

[0068] Continue to refer to Figure 2In step S220, model parameters and model boundary conditions are defined. For example, model parameters may include pore bottom radius, pore top radius, electrolyte conductivity, cell voltage, deformation seed layer thickness, molar mass (dissolving species), density (dissolving species), number of electrons per dissolving species, and threshold current density for dissolution.

[0069] Due to the high-speed flow of the electrolyte, turbulent mixing occurs. Assuming the electrolyte conductivity is constant (e.g., 7 S / m), the activation potential of the electrode reaction can be ignored. Therefore, the electrolytic cell can be simulated using a primary current distribution. Specifically, the anode workpiece corresponds to the anode, and the cathode tool corresponds to the cathode. The cathode is grounded, and the anode electrode voltage is set to 20V. Both electrodes use the same equilibrium potential.

[0070] Under the aforementioned electrode voltage, the boundary geometric deformation rate generated by the anode-electrode reaction in the normal direction is determined. This boundary geometric deformation rate is calculated based on multiple processing parameters. Then, the model boundary conditions are determined according to the geometric deformation characteristics of the jet electric field model. For example, the model boundary conditions are set as follows: the normal movement of all boundaries except the anode is zero, and there is no deformation at the two electrode boundaries. Through the above steps, the relevant parameters associated with the model can be defined. Subsequent simulation calculations will be performed based on the model boundary conditions to obtain the influence of different processing parameters on the quality of the electro-hydraulic beam aperture.

[0071] In one exemplary embodiment of this disclosure, determining the boundary geometric deformation rate generated by the electrode reaction of the anode workpiece in the normal direction includes: determining the local current density of the electrode reaction; obtaining electrode reaction parameters associated with the electrode reaction, including stoichiometric coefficients, molar mass, dissolved substance density, number of electrons in the dissolved reaction, and Faraday constant; and determining the boundary geometric deformation rate based on the local current density and the electrode reaction parameters.

[0072] Local current density refers to the amount of current passing through a conductor (such as an electrolyte) within a specific region of the model domain. Electrode reaction parameters can be processing parameters related to the electrode reaction.

[0073] Based on the above electrode voltage configuration, the velocity v of the boundary geometric deformation generated by the anodic-electrode reaction in the normal direction is determined according to the current distribution. n (m / s), boundary geometric deformation velocity v n The determination is based on the local current density of the electrode reaction and related parameters of the electrode reaction, as shown in Formula 1.

[0074]

[0075] Where M (kg / mol) is the molar mass; ρ (kg / m 3 ) is the density of the dissolved metal; n is the number of electrons participating in the dissolution reaction; F(C / mol) is the Faraday constant; i loc (A / m 2 ) represents the local current density of the electrode reaction, v eff It is the effective stoichiometric coefficient of the metal in the anode-electrode reaction.

[0076] Through the above steps, the model parameters associated with the jet electric field model can be defined, so as to analyze the influence of the above model parameters on the hole-making process quality.

[0077] In one exemplary embodiment of this disclosure, determining the local current density of an electrode reaction includes: acquiring the current distribution corresponding to the electrode reaction, determining the boundary normal and electrolyte current density vector corresponding to the current distribution, and determining the local current density based on the boundary normal and electrolyte current density vector.

[0078] Here, current distribution refers to the distribution of current on various parts of the cathode surface under ideal, assumed electrode reaction conditions where polarization is absent. Boundary normal can be the normal corresponding to the boundary of the modeling domain. Current density vector can be a physical quantity describing the strength and direction of current at a point in the circuit.

[0079] For a primary current distribution, the boundary normal and electrolyte current density vector corresponding to the current distribution can be determined, and then the local current density i can be calculated based on the above two physical quantities. loc Specifically, as shown in Formula 2.

[0080] i loc =i l ·n(Formula 2)

[0081] Among them, i l (A / m 2 ) is the electrolyte current density vector, and n is the boundary normal. Through the above steps, the distribution of local current density in the primary current distribution can be calculated.

[0082] In addition, according to relevant experimental results, veff It is defined as shown in Formula 3.

[0083] v eff =1i l ·n≥10A / cm 2

[0084] v eff =0i l ·n<10A / cm 2 (Formula 3)

[0085] Among them, v eff i is the effective stoichiometric coefficient of the metal in the anode-electrode reaction. l (A / m 2 ) is the electrolyte current density vector, and n is the boundary normal.

[0086] In one exemplary embodiment of this disclosure, the jet electric field model is simulated based on model parameters and model boundary conditions to obtain the orifice geometry at different times. This includes: determining the simulation time interval for simulating the jet electric field model; selecting simulation time points based on the simulation time interval; determining the model state of the jet electric field model at different simulation time points under model boundary conditions to obtain simulation result diagrams; the simulation result diagrams include electrolyte potential diagrams, electrolyte current density diagrams, and orifice shape diagrams; obtaining the orifice geometry based on the orifice shape diagrams; and determining the model parameters to be adjusted based on the orifice geometry.

[0087] The simulation time interval can be the time interval corresponding to the simulation calculation. The simulation time point can be a time point determined from the simulation time interval. The model state can be the relevant state of each physical quantity corresponding to the jet electric field model at different simulation time points. The simulation result graph can be the result graph of various physical quantities of the jet electric field model under the primary current distribution.

[0088] Continue to refer to Figure 2 In step S230, the model is solved. A transient simulation study is performed on the electrochemical processing of the gas film pores, and the simulation results are obtained. After constructing the jet electric field model and defining the model parameters and boundary conditions, a 1-second transient simulation study is performed on the electrochemical processing of the pores, and the simulation results are obtained. Specifically, the simulation time interval for simulating the jet electric field model is first determined; for example, the simulation time interval can be 1 second. Interpolation is selected in the time selection to obtain multiple simulation time points. Then, under the model boundary conditions, the model state of the jet electric field model at different simulation time points is determined, and simulation results are obtained, including electrolyte potential diagrams, electrolyte current density diagrams, and pore shape diagrams, etc.

[0089] refer to Figure 4 , Figure 4An electrolyte potential diagram of a jet electric field model according to an exemplary embodiment of the present disclosure is illustrated schematically. Figure 4 Yes Figure 3 The potential changes of the electrolyte in the jet electric field model constructed in the model are analyzed, and the resulting potential diagram is plotted. The following steps are required in the potential diagram plotting process: selecting potential reference points; numbering and measuring points; plotting and connecting points; calculating voltage; and analyzing potential changes.

[0090] refer to Figure 5 , Figure 5 An electrolyte current density plot of a jet electric field model according to an exemplary embodiment of the present disclosure is schematically illustrated. The electrolyte current density plot can be used to describe the current intensity and flow direction of the electrolyte in the primary current distribution. Since the jet electric field model employs a two-dimensional axisymmetric approach, therefore... Figure 5 The image shows a partial current density plot within the current distribution. According to... Figure 4 and Figure 5 It can be seen that during the simulation calculation, the electrolyte potential distribution and electrolyte current density state of the jet electric field model remain basically consistent.

[0091] refer to Figure 6 , Figure 6 The diagram schematically illustrates the hole geometry of a hole-making process according to an exemplary embodiment of the present disclosure. Figure 6 The workpiece contours are shown at simulation time points t=0, t=0.5s, and t=1.0s, respectively. Based on these contours, the hole geometry at different simulation time points can be determined. Figure 6 It can be seen that most of the material removal occurs in the area closest to the cathode tool, showing a clear trend away from the upper left corner. There is also a less obvious local maximum material removal to the right, which is affected by the insulating layer. Through the above steps, the influence of different model parameters on the hole-making process quality can be analyzed based on the hole shape diagram. This helps to adjust relevant model parameters based on simulation results and optimize process quality.

[0092] In summary, the electric field simulation method for electrochemical jet processing disclosed herein constructs a modeling domain for the geometric model of the film pore forming process, based on the generation of the electrolyte jet field; determines the model characteristics of the geometric model; constructs a jet electric field model based on the modeling domain and model characteristics; determines the model parameters and boundary conditions corresponding to the jet electric field model; and performs simulation calculations on the jet electric field model based on the model parameters and model boundary conditions to obtain the hole geometry at different times. The hole geometry is used to reflect the correlation between model parameters and the quality of the pore forming process. On the one hand, by constructing a jet electric field model, real-time acquisition and simulation calculation of electrolyte electric field information is beneficial to obtaining the influence law of different processing parameters on the quality of electro-hydraulic jet pore forming, thus providing valuable reference for the optimization of the electro-hydraulic jet pore forming process. On the other hand, by establishing a jet electric field model, model parameters can be easily and quickly modified and calculated, applicable to simulation studies under various conditions. Furthermore, based on the hole shape diagram obtained from the simulation calculation, the model parameters that affect the process and need to be adjusted can be analyzed, thereby optimizing the pore forming process.

[0093] It should be noted that although the steps of the method in this invention are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0094] Furthermore, in this example embodiment, an electric field simulation device for electrochemical jet processing is also provided. (Reference) Figure 7 The electric field simulation device 700 for electrochemical jet processing may include: a modeling domain construction module 710, a model construction module 720, a parameter condition determination module 730, and a simulation calculation module 740.

[0095] Specifically, the modeling domain construction module 710 is used to construct the modeling domain of the geometric model of the air film pore-making process. The modeling domain is generated based on the jet field of the electrolyte. The model construction module 720 is used to determine the model features of the geometric model and construct the jet electric field model based on the modeling domain and model features. The parameter condition determination module 730 is used to determine the model parameters and model boundary conditions corresponding to the jet electric field model. The simulation calculation module 740 is used to perform simulation calculations on the jet electric field model based on the model parameters and model boundary conditions to obtain the hole geometry at different times. The hole geometry is used to reflect the correlation between the model parameters and the quality of the pore-making process.

[0096] In one exemplary embodiment of this disclosure, the model building module 720 includes a model building unit, configured to: determine the model symmetry mode of the geometric model based on model characteristics; determine the physical field configuration information corresponding to the geometric model; construct an initial jet electric field model based on the modeling domain, the model symmetry mode, and the physical field configuration information; and perform geometric deformation processing on the initial jet electric field model to obtain the jet electric field model.

[0097] In one exemplary embodiment of this disclosure, the model building unit includes a model building subunit for: applying a pre-configured potential difference between the anode workpiece and the cathode tool in the film pore forming process; determining the initial geometry of the jet electric field model based on the potential difference; and introducing a rectangular seed deformation into the initial geometry to obtain the jet electric field model.

[0098] In one exemplary embodiment of this disclosure, the model parameters include the boundary geometric deformation rate, and the parameter condition determination module 730 includes a parameter condition determination unit, used to: configure corresponding electrode voltages for the anode workpiece and the cathode tool respectively, and the anode and cathode have the same equilibrium potential; determine the boundary geometric deformation rate generated by the electrode reaction of the anode workpiece in the normal direction under the electrode voltage; and determine the model boundary conditions according to the geometric deformation characteristics of the jet electric field model.

[0099] In one exemplary embodiment of this disclosure, the parameter condition determination unit includes a deformation rate determination unit, configured to: determine the local current density of the electrode reaction; acquire electrode reaction parameters associated with the electrode reaction, including stoichiometric coefficients, molar mass, dissolved substance density, number of electrons in the dissolution reaction, and Faraday constant; and determine the boundary geometric deformation rate based on the local current density and the electrode reaction parameters.

[0100] In one exemplary embodiment of this disclosure, the deformation rate determination unit includes a current density determination subunit, configured to: acquire the current distribution corresponding to the electrode reaction, determine the boundary normal and electrolyte current density vector corresponding to the current distribution, and determine the local current density based on the boundary normal and electrolyte current density vector.

[0101] In one exemplary embodiment of this disclosure, the simulation calculation module 740 includes a simulation calculation unit, configured to: determine the simulation time interval for simulating the jet electric field model; select simulation time points based on the simulation time interval; determine the model state of the jet electric field model at different simulation time points under model boundary conditions, and obtain simulation result diagrams; the simulation result diagrams include electrolyte potential diagrams, electrolyte current density diagrams, and orifice shape diagrams; obtain orifice geometry based on the orifice shape diagrams; and determine the model parameters to be adjusted based on the orifice geometry.

[0102] The specific details of the virtual modules of the electric field simulation devices for each of the above electrochemical jet processing have been described in detail in the corresponding electric field simulation methods for electrochemical jet processing, so they will not be repeated here.

[0103] It should be noted that although several modules or units of the electric field simulation device for electrochemical jet processing have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0104] Furthermore, in an exemplary embodiment of this disclosure, an electronic device capable of implementing the above-described method is also provided.

[0105] Those skilled in the art will understand that various aspects of the present invention can be implemented as systems, methods, or program products. Therefore, various aspects of the present invention can be specifically implemented as entirely hardware embodiments, entirely software embodiments (including firmware, microcode, etc.), or embodiments combining hardware and software aspects, collectively referred to herein as “circuit,” “module,” or “system.”

[0106] The following is for reference. Figure 8 To describe an electronic device 800 according to such an embodiment of the present disclosure. Figure 8 The electronic device 800 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments disclosed herein.

[0107] like Figure 8 As shown, the electronic device 800 is presented in the form of a general-purpose computing device. The components of the electronic device 800 may include, but are not limited to: at least one processing unit 810, at least one storage unit 820, a bus 830 connecting different system components (including storage unit 820 and processing unit 810), and a display unit 840.

[0108] The storage unit stores program code that can be executed by the processing unit 810, causing the processing unit 810 to perform the steps described in the "Exemplary Methods" section above, according to various exemplary embodiments of this disclosure.

[0109] Storage unit 820 may include a readable medium in the form of a volatile storage unit, such as random access memory (RAM) 821 and / or cache memory 822, and may further include a read-only memory (ROM) 823.

[0110] Storage unit 820 may include a program / utility 824 having a set (at least one) of program modules 825, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0111] Bus 830 can represent one or more of several bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0112] Electronic device 800 can also communicate with one or more external devices 870 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 800, and / or with any device that enables electronic device 800 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 850. Furthermore, electronic device 800 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 860. As shown, network adapter 860 communicates with other modules of electronic device 800 via bus 830. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 800, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0113] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the methods according to the embodiments of this disclosure.

[0114] In exemplary embodiments of this disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the methods described above is stored. In some possible embodiments, various aspects of the invention may also be implemented as a program product comprising program code that, when the program product is run on a terminal device, causes the terminal device to perform the steps of the various exemplary embodiments of the invention described in the "Exemplary Methods" section above.

[0115] refer to Figure 9 As shown, a program product 900 for implementing the above-described method according to an embodiment of the present invention is described. It may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, the readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0116] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0117] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0118] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0119] Program code for performing the operations of this invention can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0120] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of the present invention, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0121] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0122] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for simulating the electric field of electrochemical jet processing, characterized in that, include: A modeling domain for constructing a geometric model of a film pore fabrication process, wherein the modeling domain is generated based on the jet field of the electrolyte; Determine the model features of the geometric model, and construct a jet electric field model based on the modeling domain and the model features; Determine the model parameters and model boundary conditions corresponding to the jet electric field model, wherein the model parameters include the boundary geometric deformation rate; Based on the model parameters and the model boundary conditions, the jet electric field model is simulated and calculated to obtain the hole geometry at different times. The hole geometry is used to reflect the correlation between the model parameters and the hole-making process quality. Based on the modeling domain and the model features, a jet electric field model is constructed, including: The model symmetry mode of the geometric model is determined based on the model characteristics; Determine the physical field configuration information corresponding to the geometric model; Based on the modeling domain, the model symmetry, and the physical field configuration information, an initial jet electric field model is constructed. The initial jet electric field model is geometrically deformed to obtain the jet electric field model. The step of performing geometric deformation processing on the initial jet electric field model to obtain the jet electric field model includes: A pre-configured potential difference is applied between the anode workpiece and the cathode tool in the film pore forming process; Based on the potential difference, the initial geometry of the jet electric field model is determined; A rectangular seed deformation is introduced into the initial geometry to obtain the jet electric field model; The determination of the model parameters and boundary conditions corresponding to the jet electric field model includes: Each anode workpiece and cathode tool is configured with its own corresponding electrode voltage, and the anode and the cathode have the same equilibrium potential; Under the electrode voltage, determine the boundary geometric deformation rate generated in the normal direction by the electrode reaction of the anode workpiece; The boundary conditions of the jet electric field model are determined based on the geometric deformation characteristics of the model. The simulation calculation of the jet electric field model based on the model parameters and the model boundary conditions yields the hole geometry at different times, including: Determine the simulation time interval for simulating the jet electric field model, and select simulation time points based on the simulation time interval; Under the given model boundary conditions, the model state of the jet electric field model at different simulation time points is determined, and simulation result diagrams are obtained; the simulation result diagrams include electrolyte potential diagrams, electrolyte current density diagrams, and orifice shape diagrams; The hole geometry is obtained based on the hole shape diagram, and the model parameters to be adjusted are determined based on the hole geometry.

2. The method according to claim 1, characterized in that, Determining the boundary geometric deformation rate generated by the electrode reaction of the anode workpiece in the normal direction includes: Determine the local current density of the electrode reaction; Obtain electrode reaction parameters associated with the electrode reaction, including stoichiometric coefficients, molar mass, dissolved substance density, number of electrons in the dissolution reaction, and Faraday constant; The boundary geometric deformation rate is determined based on the local current density and the electrode reaction parameters.

3. The method according to claim 2, characterized in that, Determining the local current density of the electrode reaction includes: Obtain the current distribution corresponding to the electrode reaction, and determine the boundary normal and electrolyte current density vector corresponding to the current distribution; The local current density is determined based on the boundary normal and the electrolyte current density vector.

4. An electric field simulation device for electrochemical jet processing, characterized in that, include: A modeling domain construction module is used to construct a modeling domain for the geometric model of the air film pore fabrication process, wherein the modeling domain is generated based on the jet field of the electrolyte; The model building module is used to determine the model features of the geometric model and to build a jet electric field model based on the modeling domain and the model features. The parameter condition determination module is used to determine the model parameters and model boundary conditions corresponding to the jet electric field model, wherein the model parameters include the boundary geometric deformation rate; The simulation calculation module is used to perform simulation calculations on the jet electric field model based on the model parameters and the model boundary conditions to obtain the hole geometry at different times. The hole geometry is used to reflect the correlation between the model parameters and the hole-making process quality. The model building module is also used to determine the model symmetry mode of the geometric model based on the model features; Determine the physical field configuration information corresponding to the geometric model; Based on the modeling domain, the model symmetry, and the physical field configuration information, an initial jet electric field model is constructed. The initial jet electric field model is geometrically deformed to obtain the jet electric field model. The step of performing geometric deformation processing on the initial jet electric field model to obtain the jet electric field model includes: applying a pre-configured potential difference between the anode workpiece and the cathode tool in the film hole forming process; Based on the potential difference, the initial geometry of the jet electric field model is determined; A rectangular seed deformation is introduced into the initial geometry to obtain the jet electric field model; The parameter condition determination module is further configured to: configure corresponding electrode voltages for the anode workpiece and the cathode tool respectively, and the anode and the cathode have the same equilibrium potential; Under the electrode voltage, determine the boundary geometric deformation rate generated in the normal direction by the electrode reaction of the anode workpiece; The boundary conditions of the jet electric field model are determined based on the geometric deformation characteristics of the model. The simulation calculation module is further configured to: determine the simulation time interval for simulating the jet electric field model, and select simulation time points based on the simulation time interval; Under the given model boundary conditions, the model state of the jet electric field model at different simulation time points is determined, and simulation result diagrams are obtained; the simulation result diagrams include electrolyte potential diagrams, electrolyte current density diagrams, and orifice shape diagrams; The hole geometry is obtained based on the hole shape diagram, and the model parameters to be adjusted are determined based on the hole geometry.

5. An electronic device, characterized in that, include: processor; as well as A memory storing computer-readable instructions, which, when executed by the processor, implement the electric field simulation method for electrochemical jet processing according to any one of claims 1 to 3.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the electric field simulation method for electrochemical jet processing according to any one of claims 1 to 3.

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