Device for measuring electrochemical dissolution behavior of electrolytic machining and its application method

Abstract

The present invention provides a device for measuring the electrochemical dissolution behavior of electrolytic machining and an application method thereof, belonging to the field of electrolytic machining technology, wherein the measuring device includes an electrolytic cell body, a microchannel for flowing an electrolyte therethrough is provided therein; a measuring portion is constructed on the electrolytic cell body, a protruding end of the measuring portion is provided with a measuring port for connecting the microchannel with the outside world; the microchannel located in the measuring portion is separated into an inlet channel and an outlet channel, and the inlet channel and the outlet channel are arranged to gradually contract on the side of the inner wall near the measuring port. The device for measuring the electrochemical dissolution behavior of electrolytic machining provided by the present invention can make the high-speed electrolyte in the microchannel flow laterally through the measuring port, and can make the auxiliary electrode face the measuring port, thereby avoiding the problem of uneven distribution of the electric field and flow field caused by the electrolyte positively impacting the measuring area and the auxiliary electrode deviating from the measuring area.

Description

Technical Field

[0001] The present application relates to the technical field of electrolytic machining, and in particular to a device for measuring electrochemical dissolution behavior in electrolytic machining and an application method thereof. Background Art

[0002] In recent years, with the advancement of materials science and technology, an increasing number of emerging metal materials have been used in industrial applications, leading to a growing demand for high-quality and efficient processing methods for these new metal materials. Electrochemical machining, as an advanced manufacturing technology with many unique advantages, has become a potential suitable processing technology for these new metal materials.

[0003] Since material removal in electrolytic machining is essentially an electrochemical dissolution behavior, machining accuracy and machining rate are very sensitive to the electrochemical properties of the workpiece material itself. For emerging metal materials, measuring the electrochemical dissolution behavior of the workpiece material can guide the selection of electrolytic machining electrolyte type and concentration, electrical parameters, flow rate and other process parameters, which has become an important means to develop electrolytic machining processes for new materials with high efficiency and low cost. In addition, even for the electrolytic machining processes of existing commonly used materials, the measurement and experimental analysis of electrochemical dissolution behavior can still guide the improvement and optimization of its machining process. Therefore, the measurement and experimental analysis of the electrolytic machining process of metal materials is of great significance.

[0004] However, the electrochemical dissolution environment of electrolytic machining is special, and its basic characteristics mainly include high current density (10A / cm 2 These two basic characteristics make the conventional hydrostatic three-electrode electrolytic cell traditionally used for metal corrosion behavior measurement unable to meet the measurement requirements.

[0005] Currently, there are two types of flow electrolytic cells commonly used for measuring electrochemical dissolution behavior in electrolytic machining: the two-electrode rectangular flow channel electrolytic cell and the three-electrode θ-type capillary electrolytic cell. The former, with its two-electrode system, cannot accurately measure the anode potential. Its large measurement area prevents it from being used in conjunction with an electrochemical workstation to achieve high current density. The test sample generally requires sidewall insulation, and each measurement requires sample preparation such as grinding and polishing. While the latter largely overcomes these shortcomings, its structure is complex, with numerous parts, and the gap between the auxiliary electrode and the working electrode is uncontrollable. The most critical component, the θ-type capillary glass tube, is difficult to manufacture, has poor dimensional accuracy, and is costly. Furthermore, due to the inherent flow channel configuration of the θ-type capillary glass tube, the auxiliary electrode cannot face the measurement area directly, resulting in the electrolyte directly impacting the measurement area, causing uneven electric and flow field distributions.

[0006] Therefore, there is an urgent need to solve the problem in the prior art that the electrolyte positively impacts the measurement area and the auxiliary electrode deviates from the measurement area, resulting in uneven distribution of the electric field and flow field in the measurement area. Summary of the Invention

[0007] In view of this, the purpose of this application is to propose a measuring device for electrochemical dissolution behavior of electrolytic machining and its application method, so as to solve the problem in the prior art that the electrolyte positively impacts the measurement area, resulting in uneven distribution of the electric field and flow field in the measurement area.

[0008] Based on the above objectives, the present application provides a device for measuring electrochemical dissolution behavior of electrolytic machining, comprising:

[0009] The electrolytic cell body is provided with a microchannel for flowing electrolyte; the electrolytic cell body is constructed with a measuring portion, and the protruding end of the measuring portion is provided with a measuring port for connecting the microchannel with the outside world;

[0010] The microchannel in the measuring portion is divided into a liquid inlet channel and a liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are arranged to gradually contract on the inner wall side surface close to the measuring port.

[0011] Furthermore, it also includes:

[0012] an auxiliary electrode movably disposed on the electrolytic cell body along its axial direction, the connection end of the auxiliary electrode being connected to an external detection device, the electrode end of the auxiliary electrode extending into the measuring portion and disposed opposite the measuring port, the liquid inlet channel and the liquid outlet channel being disposed on either side of the auxiliary electrode;

[0013] A reference electrode, wherein the connection end of the reference electrode is connected to an external detection device, and the electrode end of the reference electrode is located in the liquid inlet channel.

[0014] Furthermore, a partition is constructed in the measuring part for separating the liquid inlet channel and the liquid outlet channel, and an electrode guide block is constructed at one end of the partition close to the measuring port, and a through hole is opened on the electrode guide block for the electrode end of the auxiliary electrode to pass through.

[0015] Furthermore, one end of the electrode guide block away from the measuring port is constructed to be a gradually expanding open shape.

[0016] Furthermore, a supporting portion is provided on the electrolytic cell body, and a fine-tuning member is provided on the supporting portion, and the fine-tuning member can fine-tune the axial movement distance of the auxiliary electrode.

[0017] Furthermore, the support portion includes a first support plate fixedly connected to the fine-tuning member, and a second support plate fixedly connected to the auxiliary electrode, and the adjustment end of the fine-tuning member is fixedly connected to the second support plate.

[0018] Furthermore, the electrolytic cell body further comprises:

[0019] a liquid inlet port, communicating with the liquid inlet channel, the liquid inlet port being adapted to communicate with an external electrolyte tank;

[0020] The liquid outlet port is connected to the liquid outlet channel, and the liquid outlet port is suitable for connecting to an external electrolytic cell so that the electrolyte tank and the microchannel form a circulation loop.

[0021] Furthermore, the protruding end of the measuring portion is in a gradually shrinking cone shape.

[0022] Furthermore, it also includes:

[0023] an electrolyte tank, connected to the microchannel via a pipeline to form a circulation loop;

[0024] A positioning platform comprising a support frame for fixing the device for measuring the electrochemical dissolution behavior of electrolytic machining, and a three-dimensional displacement device capable of moving relative to the device for measuring the electrochemical dissolution behavior of electrolytic machining;

[0025] The workpiece to be measured is fixed on the three-dimensional displacement device by the electrode pressing piece. The working electrode of the workpiece to be measured is connected to the external detection device through the electrode pressing piece. The workpiece to be measured can abut and block the measurement port due to the movement of the three-dimensional displacement device.

[0026] Based on the same inventive concept, the present application also provides an application method, using the device for measuring electrochemical dissolution behavior of electrolytic machining as described in any of the above items, comprising:

[0027] Driving the three-dimensional displacement device to move to a preset position, wherein the preset position is a position when the workpiece to be measured and the measuring port form a blocking state;

[0028] Starting a circulation loop between the electrolyte tank and the microfluidic channel;

[0029] An electrochemical polarization measurement experiment is performed after selecting relevant measurement parameters through an external detection device. The measurement parameters include electrolyte flow rate, potential scanning range, potential scanning speed and electrolyte composition.

[0030] As can be seen from the above, the device for measuring the electrochemical dissolution behavior of electrolytic machining provided by the present application, by arranging a measuring part on the electrolytic cell body, and a measuring port is provided at the protruding end of the measuring part, and the auxiliary electrode can be directly arranged opposite the workpiece to be measured through the measuring port, thereby improving the uniformity of the electric field in the measuring area; since the liquid inlet channel and the liquid outlet channel are arranged to gradually shrink on the inner wall side near the measuring port, the high-speed flowing electrolyte fluid in the microchannel will be guided by the shrinking inner wall side and flow laterally through the measuring port, thereby avoiding the problem of uneven flow field distribution caused by the electrolyte facing the measuring port and positively impacting the measuring area. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 A three-dimensional diagram of a device for measuring electrochemical dissolution behavior of electrolytic machining in an embodiment of the present application;

[0033] Figure 2 for Figure 1 Frontal cross-section of

[0034] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0035] Figure 4 This is a schematic diagram of the connection of a device for measuring electrochemical dissolution behavior in electrolytic machining according to an embodiment of the present application;

[0036] Figure 5 This is a flowchart of the steps of the application method in the embodiment of the present application;

[0037] Figure 6 This is a volt-ampere polarization curve diagram of an exemplary experimental scenario in an embodiment of the present application.

[0038] Description of Reference Numerals

[0039] 1. Electrolytic cell body; 2. Electrolyte tank; 3. Workpiece to be tested; 4. Gear pump; 5. Pipeline;

[0040] 11. Liquid inlet channel; 12. Liquid outlet channel; 13. Measuring port; 14. Sealing bolt with hole; 15. Auxiliary electrode; 16. Reference electrode; 17. Interlayer; 18. Electrode guide block; 19. First support plate; 20. Second support plate; 21. Fine-tuning element; 22. Mounting hole; 23. Protruding end;

[0041] 61. Support frame; 62. Three-dimensional displacement device. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0043] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0045] like Figures 1 to 3 As shown, one or more embodiments of the present application provide a device for measuring the electrochemical dissolution behavior of electrolytic machining, comprising an electrolytic cell body 1, wherein a microchannel for flowing an electrolyte is provided inside the electrolytic cell body 1; a measuring portion is constructed on the electrolytic cell body 1, and a protruding end 23 of the measuring portion is provided with a measuring port 13 for connecting the microchannel with the outside world; wherein the microchannel located in the measuring portion is divided into a liquid inlet channel 11 and a liquid outlet channel 12, and the inner wall side surfaces of the liquid inlet channel 11 and the liquid outlet channel 12 are gradually contracted near the measuring port 13.

[0046] From the above description, it can be seen that the measuring device for the electrochemical dissolution behavior of electrolytic machining provided by the present application is a device in which a measuring part is arranged on the electrolytic cell body 1, and a measuring port 13 is provided at the protruding end 23 of the measuring part. The auxiliary electrode 15 can be directly arranged opposite the workpiece 3 to be measured through the measuring port 13, thereby improving the uniformity of the flow field; since the liquid inlet channel 11 and the liquid outlet channel 12 are arranged to gradually shrink near the inner wall side of the measuring port 13, the high-speed flowing electrolyte in the microchannel will be guided by the shrinking inner wall side and flow laterally through the measuring port 13, thereby avoiding the problem that the electrolyte faces the measuring port 13 and impacts the measuring area, resulting in uneven distribution of the electric field and flow field.

[0047] In some embodiments, the electrolytic cell body 1 is integrally formed using photosensitive resin material using photocuring 3D printing technology. Since the electrolytic cell body 1 has microchannels with complex flow directions and numerous assembly holes, photocuring 3D printing technology has low production difficulty and higher dimensional accuracy. It can more accurately control the internal structure of the electrolytic cell body 1, ensuring high-efficiency and low-cost production of the electrolytic cell body.

[0048] In some embodiments, the electrolytic cell body 1 is provided with an inlet port connected to the inlet channel 11, and a liquid outlet port connected to the outlet channel 12, wherein both the inlet port and the outlet port are connected to the external electrolyte tank 2 through a pipeline 5. Under this setting, the electrolyte in the electrolyte tank 2 is pumped under pressure from the inlet port into the inlet channel 11 of the microchannel, and flows out from the outlet port along the outlet channel 12, and flows back to the electrolyte tank 2 to form a complete fluid path.

[0049] In the above embodiment, the liquid inlet and outlet ports can be connected to the pipeline 5 by way of example via a perforated sealing bolt 14. The liquid inlet and outlet ports are sealed to the perforated sealing bolt 14 via a silicone gasket. Of course, the liquid inlet and outlet ports can also be connected to the pipeline 5 using other methods. Here, the pipeline can be made of PE material, with an outer diameter of 3 mm.

[0050] In some embodiments, the level of the liquid inlet port is set higher than the level of the liquid outlet port. This setting can guide the electrolyte under the action of gravity, thereby making the electrolyte flow more smoothly in the microchannel.

[0051] like Figure 1 and Figure 2 As shown, in some embodiments, the measuring device for the electrochemical dissolution behavior of electrolytic machining also includes an auxiliary electrode 15 and a reference electrode 16. Here, the auxiliary electrode 15 is movably arranged on the electrolytic cell body 1 along its axial direction, and the connecting end of the auxiliary electrode 15 is connected to an external detection device. The electrode end of the auxiliary electrode 15 extends into the measuring part and is arranged opposite to the opening. The liquid inlet channel 11 and the liquid outlet channel 12 are respectively arranged on both sides of the auxiliary electrode 15; the connecting end of the reference electrode 16 is connected to the external detection device, and the electrode end of the reference electrode 16 is located in the liquid inlet channel 11.

[0052] In the above embodiment, the auxiliary electrode 15 is used to form a polarization circuit with the working electrode of the workpiece 3 to allow current to flow through the working electrode. The reference electrode 16 serves as a reference electrode for comparison when measuring various electrodes. The auxiliary electrode 15 and the reference electrode 16 can be made of electrode materials commonly used in the field of electrolytic machining, for example, platinum or carbon electrodes. For example, the diameter of the auxiliary electrode 15 in this embodiment is 1-2 mm.

[0053] like Figure 1As shown, the electrolytic cell body 1 is provided with an assembly hole for the auxiliary electrode 15 and the reference electrode 16 to pass through. After the auxiliary electrode 15 and the reference electrode 16 are assembled, the electrode ends of the two electrodes extend into the microchannel inside the electrolytic cell body 1. Here, illustratively, the aforementioned assembly hole for the auxiliary electrode 15 and the reference electrode 16 to pass through can be threadedly sealed by a perforated sealing bolt 14, and the auxiliary electrode 15 and the reference electrode 16 are arranged through the perforated sealing bolt 14. Of course, the auxiliary electrode 15 and the reference electrode 16 can also be sealed with the electrolytic cell body 1 in other ways.

[0054] In some embodiments, the protruding end 23 of the measuring portion is tapered, with the measuring port 13 located at the lowermost end of the protruding end 23. The end surface of the measuring port 13 is a flat surface. Therefore, when the protruding end 23 of the measuring portion abuts the workpiece 3 to be measured, the workpiece 3 and the flat surface of the measuring port 13 are sealed against each other, preventing electrolyte from overflowing from the abutment gap between the measuring port 13 and the workpiece 3 to be measured. The tapered structure minimizes the contact area between the measuring portion and the workpiece 3 to be measured, thereby facilitating subsequent adjustment of the measurement area of ​​the workpiece 3 to be measured.

[0055] As an exemplary structure, the shape of the measurement port 13 can be circular, square, or other shapes. When the measurement port 13 is circular, its diameter can be selected to be 1-2 mm. This sufficiently small measurement port 13 can be used with a conventional commercial electrochemical workstation, thereby simulating a real electrochemical processing environment and facilitating the measurement of electrochemical dissolution behavior under high current density conditions.

[0056] In the above embodiment, the electrolytic cell body 1 is provided with five openings, namely the liquid inlet port, the liquid outlet port, the auxiliary electrode assembly hole, the reference electrode assembly hole and the measurement port 13 .

[0057] like Figure 3 As shown, in some embodiments, for example, the inner wall side surface of the liquid inlet channel 11 close to the measuring port 13 and the inner wall side surface of the liquid outlet channel 12 close to the measuring port 13 are constructed to form a smoothly transitioned cone, and the electrolyte is guided by the inner wall side surface to reduce the frontal impact on the measuring port 13; as an alternative embodiment, the inner wall side surface of the liquid inlet channel 11 or the liquid outlet channel 12 close to the measuring port 13 can be formed by joining multiple flat inclined surfaces, as long as the impact effect on the measuring port 13 can be reduced.

[0058] Still Figure 3As shown, in some embodiments, a partition 17 is constructed in the measuring portion for separating the liquid inlet channel 11 and the liquid outlet channel 12, and an electrode guide block 18 is constructed at one end of the partition 17 close to the measuring port 13. The electrode guide block 18 is provided with a through hole suitable for the electrode end of the auxiliary electrode 15 to pass through. The electrode end of the auxiliary electrode 15 is fixed by the electrode guide block 18, thereby keeping the auxiliary electrode 15 facing the measuring port, ensuring that a uniform electric field is generated on the working electrode surface of the workpiece to be measured. Here, further, the end of the motor guide block away from the measuring port 13 is constructed into a gradually expanding open shape. The open shape can facilitate guiding the electrode end of the auxiliary electrode 15 to pass through the through hole, thereby facilitating the assembly and replacement of the auxiliary electrode 15.

[0059] In the above embodiment, after the electrode end of the auxiliary electrode 15 passes through the electrode guide block 18, the axis of the electrode end passes through the center point of the measuring port 13. That is, the electrode end of the auxiliary electrode 15 is arranged directly opposite the measuring port 13. This arrangement can ensure that the auxiliary electrode 15 and the working electrode of the workpiece 3 to be measured form a polarization circuit, which is conducive to generating a uniform electric field on the surface of the working electrode.

[0060] It should be noted that, in this embodiment, the liquid inlet channel 11 and the liquid outlet channel 12 are separated by the axis where the electrode end is located. Figure 3 Taking the figure as an example, the direction of the arrow in the figure is the flow direction of the electrolyte, the liquid outlet channel 12 is located on the left side of the axis where the electrode end is located, and the liquid inlet channel 11 is located on the right side of the axis where the motor end is located.

[0061] Furthermore, the fluid cross-section of the aforementioned liquid inlet channel 11 is smaller than the fluid cross-section of the liquid outlet channel 12. For example, when the liquid inlet channel 11 is cylindrical, the diameter of its fluid cross-section is 0.5-1 mm. Thus, the electrolyte can maintain a high-speed fluid state in the liquid inlet channel 11, thereby providing the measurement area with high-speed flow field conditions that simulate the electrolytic machining environment.

[0062] like Figure 1 As shown, in some embodiments, the electrolytic cell body 1 is further provided with a support portion, on which a fine-tuning member 21 is provided. The fine-tuning member 21 can fine-tune the axial movement distance of the auxiliary electrode 15. Specifically, the support portion includes a first support plate 19 fixedly connected to the fine-tuning member 21, and a second support plate 20 fixedly connected to the exposed end of the auxiliary electrode 15. The adjustment end of the fine-tuning member 21 is fixedly connected to the second support plate 20. Thus, the fine-tuning member 21 can be used to accurately fine-tune the gap between the auxiliary electrode 15 and the measuring port 13, which is beneficial for subsequent measurement work under different measurement parameters and also facilitates simulated electrolytic machining work.

[0063] In the above embodiment, as an exemplary illustration, the fine-tuning member 21 adopts an existing mature differential head, the first support plate 19 and the second support plate 20 are both arranged horizontally, and the sleeve of the differential head, that is, the adjustment end mentioned in this embodiment, extends into the second support plate 20 and is fixedly connected to the second support plate 20. When the adjustment end of the differential head adjusts the stroke length, the second support plate 20 moves up and down synchronously with the adjustment end, so that the exposed end of the auxiliary electrode 15 moves up and down synchronously with the second support plate 20.

[0064] Still Figure 1 As shown, in some embodiments, a mounting hole 22 is further provided on the electrolytic cell body 1, and the electrolytic cell body 1 is fixed to a related bracket by bolts passing through the mounting hole 22 to facilitate subsequent measurement work. In this exemplary embodiment, the diameter of the mounting hole 22 is 6.5 mm.

[0065] like Figure 4 As shown, in some embodiments, the device for measuring electrochemical dissolution behavior of electrochemical machining further includes:

[0066] The electrolyte tank 2 is connected to the microchannel via the pipeline 5 to form a circulation loop;

[0067] A positioning platform, comprising a support frame 61 for fixing the device for measuring electrochemical dissolution behavior during electrochemical machining, and a three-dimensional displacement device 62 capable of moving relative to the device for measuring electrochemical dissolution behavior during electrochemical machining;

[0068] The workpiece 3 to be measured is fixed on the three-dimensional displacement device 62 by the electrode pressing piece. The working electrode of the workpiece 3 to be measured is connected to the external detection device through the electrode pressing piece. The workpiece 3 to be measured can abut and block the measuring port 13 due to the movement of the three-dimensional displacement device 62.

[0069] In the above embodiment, the pipeline 5 between the electrolyte tank 2 and the microchannel is connected to a pressure pump, which can control the delivery flow pressure of the electrolyte, thereby facilitating the adjustment of the flow rate of the electrolyte. In this exemplary embodiment, the pressure pump can be an existing mature gear pump 4. The electrolyte flows from the electrolyte tank 2 to the gear pump 4 through the pipeline 5, and after being pressurized by the gear pump 4, it flows into the microchannel of the electrolytic cell body 1. After exiting the liquid outlet channel 12 of the microchannel, the electrolyte flows back to the electrolyte tank 2 through the pipeline 5, thereby forming a complete liquid circuit.

[0070] In some embodiments, the electrolytic cell body 1 is secured to the support frame 61 via bolts extending through its mounting holes 22. The three-dimensional displacement device 62 can utilize an existing, mature, high-precision three-dimensional translation stage. Here, using a three-dimensional coordinate system as an example, three-dimensional displacement refers to movement in the X-axis, Y-axis, and Z-axis directions. The three-dimensional displacement device 62 carries the workpiece 3 to be measured and moves, ultimately moving the workpiece 3 to a position where the surface of the workpiece 3 is in close contact with the measurement port 13. Due to the small opening size of the measurement port 13, the close contact between the workpiece 3 and the measurement port 13 maintains a good seal, thereby preventing leakage of electrolyte from the measurement port 13.

[0071] It should be noted that by controlling the three-dimensional displacement device 62, the measuring position of the workpiece can be quickly switched. For the same workpiece 3 to be measured, since the opening size of the measuring port 13 is small, the workpiece 3 to be measured can switch positions several times to block the measuring port 13. After the workpiece 3 to be measured is polished once, multiple measurements can be performed at multiple positions of the workpiece 3 to be measured under different parameter environments, realizing multiple measurements, effectively shortening the experimental preparation time, and reducing the material consumption of the workpiece 3 to be measured.

[0072] In some embodiments, the external detection device can be an existing electrochemical workstation, which can be used to perform electrochemical dissolution behavior measurement experiments. The electrode pressing piece can be a mature elastic pressing piece that can be directly electrically connected to the external detection device to achieve power supply to the workpiece 3 to be tested.

[0073] Based on the same inventive concept, this application also provides an application method, such as Figure 5 As shown, the device for measuring the electrochemical dissolution behavior of electrolytic machining as described in any of the above embodiments includes:

[0074] S100, driving the three-dimensional displacement device 62 to move to a preset position, wherein the preset position is a position when the workpiece 3 to be measured and the measuring port 13 are in a blocked state;

[0075] S200, starting the circulation loop between the electrolyte tank 2 and the microfluidic channel;

[0076] S300, performing a measurement experiment after selecting relevant measurement parameters through an external detection device, wherein the measurement parameters include electrolyte flow rate, potential scanning range, potential scanning speed and electrolyte composition.

[0077] In the above steps, in step S100, the blocking state is the state in which the surface of the workpiece 3 to be measured and the measuring end face are in close contact with each other. In this state, the surface of the workpiece 3 to be measured and the measuring end face are in close contact with each other to form a seal, thereby preventing the electrolyte in the microchannel from leaking from the measuring port 13.

[0078] In some embodiments, between step S100 and step S200, the following steps are further included:

[0079] The gap between the auxiliary electrode 15 and the workpiece 3 to be measured is preset, and the auxiliary electrode 15 is adjusted to move to the preset gap position by the fine-tuning member 21 .

[0080] In some embodiments, the application method of the present application for a device for measuring electrochemical dissolution behavior in electrolytic machining may include the following steps:

[0081] First, the auxiliary electrode 15 and the reference electrode 16 are respectively installed in the corresponding assembly holes of the electrolytic cell body 1, and the fine-tuning member 21 is installed in the corresponding assembly hole of the first support plate 19. The fine-tuning member and the auxiliary electrode 15 are connected through the second support plate 20 to achieve synchronous operation of the fine-tuning member 21 and the auxiliary electrode 15; the entire electrolytic cell body 1 is installed on the support frame 61 through the mounting hole 22;

[0082] Next, connect the electrolytic cell body 1 and the electrolyte tank 2, and connect the auxiliary electrode 15, the reference electrode 16 and the corresponding electrodes of the external detection device.

[0083] On the basis of the above, the gap between the auxiliary electrode 15 and the working electrode of the workpiece 3 to be measured is preset, and the fine-tuning member 21 is adjusted to adjust the auxiliary electrode 15 to be flush with the measuring port 13, and then the fine-tuning member 21 is adjusted in the reverse direction to rise to the preset gap position;

[0084] Then, the workpiece 3 to be measured is fixed on the three-dimensional displacement device 62 with an electrode pressing piece, and the three-dimensional displacement device 62 is controlled to move to the corresponding measurement position. Here, the measurement position refers to the position where the working electrode of the workpiece 3 to be measured is pressed tightly with the measurement port 13 to form a seal;

[0085] After setting the flow rate through the gear pump 4, the gear pump 4 is started to check the sealing of the entire measuring device. When the sealing is found to be good, the corresponding application method and measurement parameters are selected through the external detection device to conduct a measurement experiment of the electrochemical dissolution behavior.

[0086] In the above steps, the preset gap should be set according to actual experiments, and there is no absolute limitation on this in this embodiment.

[0087] For example, Figure 6 As shown, Figure 6The linear sweep voltammetric polarization curve of pure iron in a 20 wt.% NaCl electrolyte, measured using the device and application method for measuring electrochemical dissolution behavior in electrolytic machining, is shown. The measurement parameters are: electrolyte flow rate v = 750 ml / min; potential sweep range 0-10 V; potential sweep rate V = 0.5 V / s. The graph demonstrates that the device and application method for measuring electrochemical dissolution behavior in electrolytic machining, as described in this application, can achieve excellent measurement results for the workpiece 3 under test.

[0088] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied in a distributed scenario and performed by multiple devices working together. In such a distributed scenario, one of the multiple devices may only perform one or more steps of the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the method.

[0089] It should be noted that the above description is limited to some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in an order different from that described in the above embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0090] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0091] In addition, for simplicity of description and discussion, and in order not to make the embodiment of the application difficult to understand, the known power supply / ground connection with integrated circuit (IC) chip and other components may or may not be shown in the accompanying drawings provided. In addition, the device can be shown in the form of a block diagram to avoid making the embodiment of the application difficult to understand, and this also takes into account the following fact, that is, the details of the embodiment of these block diagram devices are highly dependent on the platform to be implemented in the embodiment of the application (that is, these details should be fully within the scope of understanding of those skilled in the art). When specific details (for example, circuit) are set forth to describe exemplary embodiments of the application, it will be apparent to those skilled in the art that the embodiment of the application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0092] Although the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may utilize the embodiments discussed.

[0093] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. A device for measuring electrochemical dissolution behavior of electrolytic machining, characterized in that: include: The electrolytic cell body is provided with a microchannel for flowing electrolyte; the electrolytic cell body is constructed with a measuring portion, and the protruding end of the measuring portion is provided with a measuring port for connecting the microchannel with the outside world; The microchannel in the measuring portion is divided into a liquid inlet channel and a liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are arranged to gradually shrink on the side of the inner wall close to the measuring port; an auxiliary electrode movably disposed on the electrolytic cell body along its axial direction, the connection end of the auxiliary electrode being connected to an external detection device, the electrode end of the auxiliary electrode extending into the measuring portion and disposed opposite the measuring port, the liquid inlet channel and the liquid outlet channel being disposed on either side of the auxiliary electrode; A reference electrode, wherein the connection end of the reference electrode is connected to an external detection device, and the electrode end of the reference electrode is located in the liquid inlet channel.

2. The device for measuring electrochemical dissolution behavior of electrolytic machining according to claim 1, characterized in that: The measuring portion is provided with a partition for separating the liquid inlet channel and the liquid outlet channel. An electrode guide block is provided at one end of the partition close to the measuring port. The electrode guide block is provided with a through hole for the electrode end of the auxiliary electrode to pass through.

3. The device for measuring electrochemical dissolution behavior of electrolytic machining according to claim 2, characterized in that: One end of the electrode guide block away from the measuring port is configured to be in a gradually expanding open shape.

4. The device for measuring electrochemical dissolution behavior of electrolytic machining according to claim 1, characterized in that: The electrolytic cell body is provided with a support portion, and the support portion is provided with a fine-tuning member, and the fine-tuning member can fine-tune the axial movement distance of the auxiliary electrode.

5. The device for measuring electrochemical dissolution behavior of electrolytic machining according to claim 4, characterized in that: The supporting portion includes a first supporting plate fixedly connected to the fine-tuning member and a second supporting plate fixedly connected to the auxiliary electrode, and the adjusting end of the fine-tuning member is fixedly connected to the second supporting plate.

6. The device for measuring electrochemical dissolution behavior of electrolytic machining according to claim 1, characterized in that: The electrolytic cell body also includes: a liquid inlet port, communicating with the liquid inlet channel, the liquid inlet port being adapted to communicate with an external electrolyte tank; The liquid outlet port is connected to the liquid outlet channel, and the liquid outlet port is suitable for connecting to an external electrolytic cell so that the electrolyte tank and the microchannel form a circulation loop.

7. The device for measuring electrochemical dissolution behavior of electrolytic machining according to claim 1, characterized in that: The protruding end of the measuring portion is in a gradually shrinking cone shape.

8. The device for measuring electrochemical dissolution behavior of electrolytic machining according to any one of claims 1 to 7, characterized in that: Also includes: an electrolyte tank, connected to the microchannel via a pipeline to form a circulation loop; A positioning platform comprising a support frame for fixing the device for measuring the electrochemical dissolution behavior of electrolytic machining, and a three-dimensional displacement device capable of moving relative to the device for measuring the electrochemical dissolution behavior of electrolytic machining; The workpiece to be measured is fixed on the three-dimensional displacement device by the electrode pressing piece. The working electrode of the workpiece to be measured is connected to the external detection device through the electrode pressing piece. The workpiece to be measured can abut and block the measurement port due to the movement of the three-dimensional displacement device.

9. An application method, characterized in that: The device for measuring electrochemical dissolution behavior of electrolytic machining according to any one of claims 1 to 8 comprises: Driving the three-dimensional displacement device to move to a preset position, wherein the preset position is a position when the workpiece to be measured and the measuring port form a blocking state; Starting a circulation loop between the electrolyte tank and the microfluidic channel; An electrochemical polarization measurement experiment is performed after selecting relevant measurement parameters through an external detection device. The measurement parameters include electrolyte flow rate, potential scanning range, potential scanning speed and electrolyte composition.

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