Electrochemical test device for corrosion resistance of magnetic material

Abstract

The application discloses a kind of electrochemical testing devices of corrosion resistance of magnetic material, comprising: shell;Inner shell, the inner shell is arranged in the shell;Magnetic field generating assembly, including the magnetic material test piece and strong magnet that the inner shell is arranged in, the strong magnet is slidably connected with the inner shell inside by moving assembly, when needing to change magnetic field intensity, the moving assembly moves along first direction or second direction, so that the distance between the strong magnet and the magnetic material test piece becomes larger or smaller, changes the magnetic field intensity between it.The electrochemical testing device of the application can not only improve the flexibility of strong magnet adjustment by setting moving assembly, so that it can adjust any distance and change different magnetic field intensity, but also can improve safety, prevent the safety hazard caused by the position of strong magnet adjusted by auxiliary tools.

Description

Technical Field

[0001] This invention relates to the field of magnetic material corrosion behavior testing equipment, and in particular to an electrochemical testing device for the corrosion resistance of magnetic materials. Background Technology

[0002] With the development of the times, new energy vehicles, high-end equipment, and communication and electronic equipment are becoming increasingly popular. Magnetic materials have become very important functional materials in fields such as radio, motors, communications, home appliances, and computers, leading to a sharp increase in the demand for magnetic components. However, since magnetic components often operate in various industrial and marine environments containing corrosive media, they are susceptible to corrosion, which reduces their service life. Therefore, it is urgent to study the changes in their corrosion resistance under specific magnetic and temperature fields.

[0003] Currently, some electrochemical corrosion studies employ adjustable magnetic field and temperature control devices for testing. However, these devices simply adjust the position of the magnet, requiring constant adjustments to achieve different magnetic field strengths. The existing technology involves removing and repositioning the magnet, a method inefficient for testing magnetic materials. Furthermore, current experimental setups use fixed positions—grooves with a defined distance between them—resulting in a relatively static magnetic field. This leads to predictable and inconsistent data, failing to accurately represent real-world magnetic fields. Additionally, frequent removal of the magnet while immersed in corrosive solutions poses safety hazards. Therefore, there is an urgent need to develop an electrochemical testing device for the corrosion resistance of magnetic materials to address these technical challenges. Summary of the Invention

[0004] The purpose of this invention is to provide an electrochemical testing device for the corrosion resistance of magnetic materials, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides an electrochemical testing device for the corrosion resistance of magnetic materials, comprising:

[0006] shell;

[0007] An inner shell, wherein the inner shell is disposed within the outer shell;

[0008] A magnetic field generating component includes a magnetic material specimen and a strong magnet disposed inside the inner shell. The strong magnet is slidably connected to the inside of the inner shell via a moving component. When it is necessary to change the magnetic field strength, the moving component moves along a first direction or a second direction, thereby increasing or decreasing the distance between the strong magnet and the magnetic material specimen, thus changing the magnetic field strength between them.

[0009] The temperature control assembly includes a heating element disposed inside the housing, a temperature sensor disposed on the inner wall of the housing, and a constant temperature controller disposed outside the housing, wherein the heating element, the temperature sensor, and the constant temperature controller are electrically connected.

[0010] Preferably, it also includes a cover that is detachably attached to the outer casing.

[0011] Preferably, the moving component includes:

[0012] Slides are formed on both sides of the inner wall of the inner shell;

[0013] A placement rack, wherein first sliders are fixed to both sides of the placement rack, the first sliders slide in the slide groove, and the strong magnet is placed inside the placement rack;

[0014] A movable component is disposed on the cover, and one end of the movable component is fixed to one side of the placement rack. When it is necessary to change the magnetic field strength, the movable component is activated to move the placement rack, thereby moving the position of the strong magnet.

[0015] Preferably, the moving part includes:

[0016] Mounting base, the mounting base being fixedly attached to the cover;

[0017] A frame, which is fixedly attached above the placement rack;

[0018] The first electric telescopic rod is fixed to one end of the first electric telescopic rod at one end of the mounting base near the strong magnet, and the other end of the first electric telescopic rod is fixed to the frame.

[0019] Preferably, there are two sets of the moving components, and the two moving components are respectively located on both sides of the magnetic material specimen.

[0020] Preferably, it also includes a mounting plate, through which the inner shell and the outer shell are connected.

[0021] Preferably, it further includes a stirring assembly, the stirring assembly comprising:

[0022] A first motor, which is fixedly mounted on the mounting plate;

[0023] A stirring shaft is fixedly connected to the mounting plate through the output shaft of the first motor.

[0024] The first stirring element is provided on the stirring shaft;

[0025] The second stirring element is provided on the stirring shaft, and the second stirring element is located outside the first stirring element. The first stirring element and the second stirring element are located in the cavity formed by the inner shell and the outer shell.

[0026] Preferably, the first stirring element is a stirring rod, and a plurality of the stirring rods are fixedly connected to the stirring shaft; the second stirring element is a stirring frame, and the stirring frame is fixedly connected to the stirring shaft.

[0027] Preferably, there are at least two stirring racks.

[0028] Preferably, the cover has two through slots, one end of each through slot is provided with a limiting block, and the frame passes through the through slots and is fixedly connected to the placement frame.

[0029] The present invention discloses the following technical effects: The electrochemical testing device for the corrosion resistance of magnetic materials of the present invention, by setting a movable component, not only improves the flexibility of adjusting the strong magnet, allowing it to be adjusted at any distance to change different magnetic field strengths, but also improves safety, preventing safety hazards caused by personnel using auxiliary tools to adjust the position of the strong magnet; in addition, the electrochemical device of this application not only ensures the change of magnetic field strength, but also improves the accuracy of test data because it can be adjusted at any distance, thereby improving the accuracy of the test. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a top view of the present invention;

[0032] Figure 2 for Figure 1 A magnified view of part A in the image;

[0033] Figure 3 This is a schematic diagram of the moving part in the present invention;

[0034] Figure 4 This is a schematic diagram of the stirring assembly in this invention;

[0035] Figure 5 for Figure 4 A magnified view of part B in the image;

[0036] Figure 6 This is a schematic diagram of the clamping component in Embodiment 2;

[0037] Figure 7 This is a schematic diagram of the clamping component in the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of Example 3;

[0039] The components are as follows: 1. Outer shell; 2. Inner shell; 3. Mounting plate; 4. Second electric telescopic rod; 5. First slider; 6. Placement rack; 7. Strong magnet; 8. Mounting base; 9. First electric telescopic rod; 10. Bracket; 11. Limiting block; 12. Slide groove; 13. Frame; 14. Handle; 15. Through groove; 16. Magnetic material specimen; 17. First motor; 18. Stirring shaft; 19. Stirring rod; 20. Stirring rack; 21. Heating element; 22. Temperature sensor; 23. Thermostat; 24. Reference electrode; 25. Auxiliary electrode; 26. Hall sensor; 27. Cover; 28. Clamp; 281. Body; 282. Guide rod; 283. Screw; 284. Second slider; 285. Gripper; 286. Second motor. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Example 1

[0043] Reference Figures 1-5 This invention provides an electrochemical testing device for the corrosion resistance of magnetic materials, comprising:

[0044] Outer shell 1;

[0045] Inner shell 2, which is disposed inside the outer shell 1;

[0046] The magnetic field generating component includes a magnetic material specimen 16 and a strong magnet 7 disposed inside the inner shell 2. The strong magnet 7 is slidably connected to the inside of the inner shell 2 via a moving component. When it is necessary to change the magnetic field strength, the moving component moves along a first direction or a second direction, so that the distance between the strong magnet 7 and the magnetic material specimen 16 increases or decreases, thereby changing the magnetic field strength between them.

[0047] The temperature control assembly includes a heating element 21 disposed inside the housing 1, a temperature sensor 22 disposed on the inner wall of the housing 1, and a constant temperature controller 23 disposed outside the housing 1. The heating element 21, the temperature sensor 22, and the constant temperature controller 23 are electrically connected.

[0048] In one specific embodiment, to ensure the normal operation of the electrochemical testing device of the present invention, a mounting block (not shown in the figure) is installed inside the inner shell 2. Two fixing slots (not shown in the figure) are respectively opened in the mounting block, and a reference electrode 24 and an auxiliary electrode 25 are placed in the fixing slots respectively. The reference electrode 24 is used to compare the corrosion behavior parameters with the magnetic material specimen 16, facilitating better recording of the corrosion behavior of the magnetic material specimen 16 under specific magnetic and temperature fields for research. The auxiliary electrode 25 is used to assist the magnetic material specimen 16 and the reference electrode 24 in forming an electrode circuit in the etch solution, thereby determining the corrosivity of the magnetic material specimen 16 and the reference electrode 24 under working conditions, enabling better parameter recording and improving... The experiment simulates the similarity to actual conditions; a saturated silver chloride electrode is preferred as the reference electrode 24, and a platinum wire electrode is used as the auxiliary electrode 25. Simultaneously, to better monitor changes in magnetic field strength, another fixing slot is created within the mounting block, and a Hall sensor 26 is installed in this slot. The installation position of the Hall sensor 26 is positioned as close as possible to the position of the magnetic material specimen 16 to detect the magnetic field strength. Preferably, the Hall sensor 26 is installed radially at the center of the inner shell 2, coinciding with the position of the magnetic material specimen 16. This facilitates more accurate measurement of the magnetic field strength experienced by the magnetic material specimen 16 within the inner shell 2, improving the accuracy of the magnetic field strength assessment after measurement and effectively enhancing the stability of the experiment. As a preferred embodiment, the Hall sensor 26 is a Hall effect gaussmeter.

[0049] During use, the inner shell 2 is filled with a corrosive solution, while a control unit (not shown in the figure) is installed outside the outer shell 1. The control unit controls the movement of the moving component, allowing for precise control of the distance it travels, ensuring it can move to any position. This, in turn, ensures that the strong magnet 7 and the magnetic material specimen 16 can be at any distance, enabling more variations in magnetic field strength and more accurate test data, thus improving test precision. Simultaneously, it ensures safety, as no manual assistance is needed to handle the component during movement. This technical solution not only guarantees automation and intelligence but also improves the relationship between the strong magnet 7 and the magnetic material specimen 16. The flexibility of adjusting the magnetic field strength; in order to ensure the temperature uniformity in the cavity between the inner shell 2 and the outer shell 1, the control unit controls the heating element 21 to heat up. When it heats up to the specified temperature, the temperature sensor 22 senses that the temperature is suitable and feeds back the signal to the constant temperature controller 23. At this time, the constant temperature controller 23 starts to enter the heat preservation state. At the same time, the control unit controls the heating element 21 to stop heating. When the temperature of the heat-conducting medium in the cavity decreases, the temperature sensor 22 senses that the temperature is lower than the set temperature. The constant temperature controller 23 enters the heating state and feeds back to the control unit. The control unit controls the heating element 21 to heat up again until the specified temperature is reached, and then the next cycle is performed.

[0050] The further optimized solution also includes a cover 27, which is detachably connected to the outer shell 1.

[0051] Specifically, such as Figure 4 As shown, the cover 27 can be connected to the outer shell 1 by directly fastening it, or it can be connected to the outer shell 1 by hinge.

[0052] In a further optimized solution, the mobile component includes:

[0053] Slide groove 12 is formed on both sides of the inner wall of the inner shell 2;

[0054] The placement rack 6 has first sliders 5 fixedly connected to both sides of the placement rack 6. The first sliders 5 slide in the slide groove 12. The strong magnet 7 is placed inside the placement rack 6.

[0055] A movable component is disposed on the cover 27, and one end of the movable component is fixed to one side of the placement rack 6. When it is necessary to change the magnetic field strength, the movable component is activated to move the placement rack 6, thereby causing the position of the strong magnet 7 to move.

[0056] Furthermore, the moving part includes:

[0057] Mounting base 8, which is fixedly connected to the cover 27;

[0058] Frame 13, which is fixedly connected above the placement rack 6;

[0059] The first electric telescopic rod 9 is fixed to one end of the mounting base 8 near the strong magnet 7, and the other end of the first electric telescopic rod 9 is fixed to the frame 13.

[0060] Specifically, such as Figures 1-3 As shown, when the magnetic field strength needs to be changed, the control unit activates the first electric telescopic rod 9. The first electric telescopic rod 9 extends and moves away from the mounting base 8, thereby moving the connected placement frame 6. The strong magnet 7 placed on it will move accordingly. This changes the distance between the strong magnet 7 and the magnetic material specimen 16, and the magnetic field strength between them also changes. This allows for more flexible observation of the corrosion of the magnetic material specimen 16 under different magnetic field strengths, making the collected data more accurate and complete, and improving the accuracy of the test. In addition, to ensure that the strong magnet 7 is not affected by the placement frame 6, the placement frame 6 can adopt a hollow structure, and its outer surface is coated with an anti-corrosion layer.

[0061] Further optimization of the scheme also includes a mounting plate 3, through which the inner shell 2 and the outer shell 1 are connected.

[0062] Furthermore, it also includes a stirring assembly, which comprises:

[0063] The first motor 17 is fixedly connected to the mounting plate 3;

[0064] A stirring shaft 18 is fixedly connected to the mounting plate 3 through the output shaft of the first motor 17.

[0065] The first stirring element is provided on the stirring shaft 18;

[0066] The second stirring element is provided on the stirring shaft 18, and the second stirring element is located outside the first stirring element. The first stirring element and the second stirring element are located in the cavity formed by the inner shell 2 and the outer shell 1.

[0067] Furthermore, the first stirring component is a stirring rod 19, and a plurality of the stirring rods 19 are fixedly connected to the stirring shaft 18; the second stirring component is a stirring frame 20, and the stirring frame 20 is fixedly connected to the stirring shaft 18.

[0068] In a further optimized design, the stirring rack 20 shall consist of at least two racks.

[0069] Specifically, such as Figures 4-5As shown, to ensure the uniformity of heating of the heating element 21, the heating element 21 is designed with a serpentine structure, thus ensuring uniform heating at the bottom. Furthermore, to ensure the temperature uniformity of the heat-conducting medium in the cavity between the inner shell 2 and the outer shell 1, a first stirring element and a second stirring element are provided on the mounting plate 3. When the control unit controls the first motor 17 to start, the first motor 17 drives the first stirring element and the second stirring element to rotate simultaneously, thus stirring the heat-conducting medium to ensure the uniformity of its internal temperature. During the stirring process, the outer stirring frame 20 can stir the heat-conducting medium over a large area, while the inner stirring rod 19 performs a secondary stirring of the heat-conducting medium after stirring by the stirring frame 20, making the stirring more thorough and ensuring the temperature uniformity of the heat-conducting medium in the entire cavity. The heating element 21 can be made of heating wire, and the outer periphery is sealed to prevent it from directly contacting the heat-conducting medium.

[0070] In a further optimized design, two through slots 15 are provided on the cover 27, and a limit block 11 is provided at one end of each of the two through slots 15. The frame 13 passes through the through slots 15 and is fixedly connected to the placement frame 6.

[0071] Specifically, such as Figure 3 As shown, in order to ensure the normal movement of the movable component, a through groove 15 is opened on the cover 27. When the frame 13 moves, it can move back and forth in the two through grooves 15. In order to prevent the frame 13 from being overloaded and falling out of the through grooves 15, a limiting block 11 is installed at the end of the two through grooves 15. At the same time, in order to ensure the limiting function of the limiting block 11, a limiting groove (not shown in the figure) can be opened on the limiting block 11. When the frame 13 moves to the end of the through groove 15, it can be directly inserted into the limiting groove.

[0072] Implementation 2

[0073] Reference Figures 6-7 As shown, the only difference from Embodiment 1 is that it also includes a clamping assembly. The clamping assembly includes a bracket 10 fixed to the cover 27, a second electric telescopic rod 4 fixed to the bottom of the bracket 10, and a clamp 28 fixed to the bottom of the second electric telescopic rod 4.

[0074] In a further optimized design, the clamp 28 includes a body 281 with two slots (not shown in the figure) inside. A guide rod 282 is fixedly connected in one slot, and a screw 283 is rotatably connected in the other slot. Two second sliders 284 are slidably connected to the screw 283 and the guide rod 282. A gripper 285 is fixedly connected below the second sliders 284. A second motor 286 is fixedly connected to one end of the screw 283.

[0075] Specifically, such as Figures 6-7As shown, to ensure that the two grippers 285 can move relative to or towards each other, the screw 283 is a bidirectional screw 283. When the control unit controls the second motor 286 to start, thereby driving the bidirectional screw 283 to rotate, the two second sliders 284 located on it will move relative to or towards each other. When conducting corrosion tests on some magnetic materials, the specifications of the magnetic material specimen 16 are not fixed. Therefore, the specifications of the placement slot (not marked in the figure) set in the mounting block cannot be changed, making it impossible to test magnetic material specimens 16 of different specifications. However, the above clamping assembly can start the second motor 286 to change the distance between the two second sliders 284, thereby clamping magnetic material specimens 16 of different specifications. At the same time, magnetic material specimens 16 placed in the corrosive solution can be removed without auxiliary tools, and can be directly clamped and removed using the clamp 28, improving safety. In addition, the bracket 10 is located in the middle of the cover 27 and does not affect the sliding of the frame 13.

[0076] Implementation Three

[0077] Reference Figure 8 As shown, the only difference from Embodiment 1 is that a handle 14 is fixedly connected to the frame 13. In this way, if the first electric telescopic rod 9 malfunctions, the handle 14 can be manually pushed to move the frame 13, which can ensure the effective completion of the test experiment.

[0078] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0079] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An electrochemical testing device for the corrosion resistance of magnetic materials, characterized in that, include: Outer shell (1); Inner shell (2), the inner shell (2) is disposed inside the outer shell (1); The magnetic field generating component includes a magnetic material specimen (16) and a strong magnet (7) disposed inside the inner shell (2). The strong magnet (7) slides inside the inner shell (2) through a moving component. When it is necessary to change the magnetic field strength, the moving component moves along a first direction or a second direction, so that the distance between the strong magnet (7) and the magnetic material specimen (16) increases or decreases, thereby changing the magnetic field strength between them. The temperature control assembly includes a heating element (21) disposed inside the housing (1), a temperature sensor (22) disposed on the inner wall of the housing (1), and a constant temperature controller (23) disposed outside the housing (1), wherein the heating element (21), the temperature sensor (22), and the constant temperature controller (23) are electrically connected; It also includes a cover (27) which is detachably connected to the outer casing (1); The moving component includes: A sliding groove (12) is formed on both sides of the inner wall of the inner shell (2); Placement rack (6), with first sliders (5) fixed to both sides of the placement rack (6), the first sliders (5) sliding in the groove (12), and the strong magnet (7) placed in the placement rack (6). A movable component is provided on the cover (27), and one end of the movable component is fixed to one side of the placement rack (6). When it is necessary to change the magnetic field strength, the movable component is activated to drive the placement rack (6) to move, so that the position of the strong magnet (7) is moved. The movable component includes: Mounting base (8), which is fixed to the cover (27); The frame (13) is fixed above the placement rack (6); The first electric telescopic rod (9) is fixed to one end of the first electric telescopic rod (9) at one end of the mounting base (8) near the strong magnet (7), and the other end of the first electric telescopic rod (9) is fixed to the frame (13). It also includes a mounting plate (3), through which the inner shell (2) and the outer shell (1) are connected; It also includes a stirring assembly, the stirring assembly comprising: The first motor (17) is fixed to the mounting plate (3); The stirring shaft (18) is fixedly connected to the output shaft of the first motor (17) through the mounting plate (3). The first stirring element is provided on the stirring shaft (18); The second stirring component is provided on the stirring shaft (18), and the second stirring component is located outside the first stirring component. The first stirring component and the second stirring component are located in the cavity formed by the inner shell (2) and the outer shell (1). It also includes a clamping assembly, which includes a bracket (10) fixed to the cover (27), a second electric telescopic rod (4) fixed to the bottom of the bracket (10), and a clamp (28) fixed to the bottom of the second electric telescopic rod (4). The clamp (28) includes a body (281) with two slots inside. A guide rod (282) is fixedly connected in one slot, and a screw (283) is rotatably connected in the other slot. Two second sliders (284) slide on the screw (283) and the guide rod (282). A gripper (285) is fixedly connected below the second slider (284). A second motor (286) is fixedly connected to one end of the screw (283).

2. The electrochemical testing device for the corrosion resistance of magnetic materials according to claim 1, characterized in that: The moving components are provided in two sets, and the two moving components are respectively located on both sides of the magnetic material specimen (16).

3. The electrochemical testing device for the corrosion resistance of magnetic materials according to claim 1, characterized in that: The first stirring component is a stirring rod (19), and a plurality of the stirring rods (19) are fixedly connected to the stirring shaft (18); the second stirring component is a stirring frame (20), and the stirring frame (20) is fixedly connected to the stirring shaft (18).

4. The electrochemical testing device for the corrosion resistance of magnetic materials according to claim 3, characterized in that: There are at least two stirring racks (20).

5. The electrochemical testing device for the corrosion resistance of magnetic materials according to claim 1, characterized in that: Two through slots (15) are provided on the cover (27), and a limit block (11) is provided at one end of the two through slots (15). The frame (13) passes through the through slots (15) and is fixedly connected to the placement frame (6).

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