Multifunctional aluminum alloy exfoliation corrosion sample bearing device and using method thereof

Abstract

The invention relates to the technical field of metal material corrosion performance detection, in particular to a multifunctional aluminum alloy exfoliation corrosion sample bearing device and a using method thereof. The supporting rod is used for supporting a sample placed in the horizontal direction, the vertical direction or a set angle; the L-shaped support frame is matched with the support rod to support a set angle sample; the L-shaped hook is used for hanging a vertically placed sample; and a T-shaped mechanism is arranged at the bottom of the box body along the left-right direction and is used for fixing a vertically placed sample. By introducing the L-shaped supporting frame, the supporting rod, the T-shaped mechanism and other assemblies, batch testing can be conducted on corrosion samples of different specifications, sizes and angles, the beneficial effects of being high in efficiency, convenient, rapid, high in applicability and the like are achieved, an important auxiliary means is provided for efficient and accurate detection of an aluminum alloy exfoliation corrosion test, and the test efficiency is improved. And the device can also be applied to other total immersion tests.

Description

Technical Field

[0001] The present invention relates to the technical field of corrosion performance detection of metal materials, and particularly relates to a multifunctional bearing device for exfoliation corrosion specimens of aluminum alloy and a using method thereof. Background Art

[0002] Due to its excellent properties such as light weight, high strength, easy machining, and corrosion resistance, aluminum alloy is widely used in the superstructure, bulkheads, portholes, gangways, handrails, etc. of marine ships. Due to the high salt and high humidity characteristics of the ocean, aluminum alloy may undergo local corrosion such as exfoliation corrosion, intergranular corrosion, and pitting corrosion, which not only endangers personnel safety but also affects aesthetics. Among them, exfoliation corrosion macroscopically shows powdering, pitting, or even delamination on the material surface, seriously affecting the sealing performance of ship compartments and significantly accelerating the corrosion process of the aluminum alloy matrix under the layer. Therefore, international and domestic standards for exfoliation corrosion tests of aluminum alloy have been formulated. For example, before being applied to ships, aluminum alloy usually needs to carry out exfoliation corrosion tests with reference to standards such as ASTM G66-23, ASTM G34-23, and GB / T 22639-2022. For different series of aluminum alloys, after soaking for a specific time, macroscopic morphology rating is carried out to determine the quality of the material's exfoliation corrosion resistance and provide basic data for material selection. For example, for 5xxx series aluminum alloy, the standard requires the test surface to be placed vertically, and the upper end of the specimen is not less than 25 mm from the test solution interface and the lower end is not less than 25 mm from the bottom of the container. The specimens do not contact each other and do not contact the container wall, the temperature is 65°C, and the time is 24 h. For 2xxx, 6xxx, and 7xxx series aluminum alloys, the standard requires the test surface to be placed horizontally, and the test surface is not less than 25 mm from the test solution interface, the temperature is 25°C, the test time for 2xxx series aluminum alloy is 96 h, and that for 7xxx series aluminum alloy is 48 h. In addition, the standard also requires regular observation of the corrosion situation on the specimen surface to determine whether the test needs to be carried out until the required time (for example, if the highest corrosion grade is reached in a short time, the test can be stopped).

[0003] The commonly used test methods in the laboratory are as follows: 1. Place a triangular polyethylene support at the bottom of a glass beaker; 2. Use the triangular support to carry the specimen, place the specimen according to the standard and then add the solution; 3. Transfer the beaker to a constant temperature water bath for heat preservation and start timing. There are the following three problems with the current test method. First, due to the poor support stability of the triangular support, the specimen is very likely to fall or tilt during the process of adding the solution or transferring it to the constant temperature water bath, and it needs to be repositioned. The difficulty of positioning in the solution is greatly increased, seriously affecting the efficiency of the exfoliation corrosion test of aluminum alloy materials; second, observing the corrosion condition of the specimen surface during the test process not only increases the workload of the test personnel, but also frequent observation may cause changes in the test environment and affect the test results; third, the aluminum alloy materials in the actual service environment cannot just be in a horizontal or vertical position with the environment. The influence law of the test angle on the exfoliation corrosion test results is also one of the issues that researchers are concerned about. At present, it is impossible to fix the specimen at a certain angle for inclined placement, affecting the accuracy and integrity of the test results.

[0004] Publication number: CN219810818U. A 5XXX aluminum alloy exfoliation corrosion test device includes a box body. The top of the box body is open and covered with a box cover. The inner walls on both sides of the box body are provided with opposite support parts at different heights. A specimen suspension rod is horizontally arranged in the box body. The specimen suspension rod is placed on the support parts at the same height on the inner walls on both sides of the box body. A plurality of hooks for hanging aluminum alloy specimens are distributed at intervals along the axial direction on the specimen suspension rod. However, this solution cannot perform batch tests on corrosion specimens at different angles, and the overall efficiency and accuracy of the test device are relatively low.

[0005] Therefore, it is urgent to propose a new aluminum alloy exfoliation corrosion specimen bearing device and its use method to solve the problems of low test efficiency and low accuracy in the existing exfoliation corrosion test. Summary of the Invention

[0006] In view of this, the present invention aims to propose a multifunctional aluminum alloy exfoliation corrosion specimen bearing device and its use method to solve the problems of low test efficiency and low accuracy in the exfoliation corrosion test.

[0007] The present invention designs a rectangular frame device, combines the T-shaped groove and the clamping block through connecting bolts, which can be adjusted according to the size of the specimen. The specimen can be vertically clamped tightly through the inert material bolt, or the specimen can be vertically suspended through the circular groove above the rectangular frame across inert materials such as glass rods and L-shaped hooks through the round holes on the specimen for vertical exfoliation corrosion tests; the circular glass rod is horizontally inserted into two parallel round holes, and the specimen is horizontally placed for horizontal exfoliation corrosion tests; different-angle full-immersion corrosion tests can be carried out by partially inserting the sector angle ruler into the glass rod to adjust the angle; its structure is simple and easy to operate, and the frame structure is stable and reliable. It can quickly place the specimen for full-immersion corrosion tests.

[0008] The technical solution of the present invention is realized as follows:

[0009] The present invention discloses a multifunctional bearing device for exfoliation corrosion specimens of aluminum alloy, including a box body with openings on the front and rear sides;

[0010] At least one support rod for supporting specimens placed horizontally, vertically or at a set angle;

[0011] An L-shaped support frame arranged in the box body, which is used in cooperation with the support rod to support the specimen at a set angle;

[0012] At least one L-shaped hook arranged along the up and down direction of the box body for hanging the specimen placed vertically;

[0013] A T-shaped mechanism arranged along the left and right direction at the bottom of the box body for fixing the specimen placed vertically.

[0014] Furthermore, a plurality of first support holes are symmetrically arranged on the left and right side walls of the box body, and the first support holes are used for placing the support rod.

[0015] Furthermore, U-shaped holes and a plurality of second support holes are arranged on the left and right side walls of the box body. The plurality of second support holes are uniformly arranged in a semi-circular shape centered on the U-shaped hole. The U-shaped hole is used for placing the L-shaped support frame, and the second support holes are used for placing the support rod.

[0016] Furthermore, an angle scale is arranged between the plurality of second support holes and the U-shaped hole for conveniently placing the support rod according to a set angle.

[0017] Furthermore, the L-shaped hook is plate-shaped. The L-shaped hook includes a hook main body, a hook part and a connecting part. The hook part is arranged on the horizontal side of the hook main body, the connecting part is arranged at the top of the vertical side of the hook main body, and a connecting hole is arranged on the connecting part. The connecting hole is used for connecting the support rod.

[0018] Furthermore, the T-shaped mechanism includes:

[0019] A plurality of clamping parts for clamping the specimen;

[0020] A screw rod passing through the clamping parts and cooperating with them to achieve sliding distance adjustment;

[0021] An adjusting nut cooperating with the screw rod, and the position of the clamping part is adjusted by rotating the adjusting nut, so as to clamp or loosen the specimen;

[0022] A gasket arranged on the screw rod outside the box body for increasing friction and stability;

[0023] Among them, the clamping part, the screw rod, the adjusting nut and the gasket cooperate with each other to ensure that the specimen can be firmly fixed at a predetermined position.

[0024] Furthermore, T-shaped through holes are provided at the bottoms of the left and right sides of the box body for taking out or entering the box body of the clamping part.

[0025] Furthermore, a scale is provided at the opening edge of the front side or the rear side of the box body for observing the height of the solution.

[0026] Furthermore, a camera is provided at the opening at the rear side of the box body for monitoring and recording the test specimen.

[0027] Another object of the present invention is to disclose a use method of a multifunctional aluminum alloy exfoliation corrosion specimen bearing device, which is applicable to any of the above-mentioned multifunctional aluminum alloy exfoliation corrosion specimen bearing devices, and specifically includes the following steps:

[0028] S1: Determine the placement method of the specimen according to the test standard;

[0029] S2: Assemble the support structure. If it is placed horizontally, select a support rod of an appropriate length and insert it into the first support hole on the box body; if it is vertically suspended, install an L-shaped hook on the box body to ensure its correct and firm position; for inclined placement at different angles, select the second support hole corresponding to the angle ruler with a set angle, and insert the support rod into the second support hole;

[0030] S3: Place the specimens on the support structure in a predetermined manner, ensuring that the specimens do not contact each other and keep a certain distance from the container wall;

[0031] S4: Carefully place the assembled bearing device into a 5L beaker, taking care not to collide with the specimens. According to the requirements of the test standard, accurately add an appropriate amount of corrosion solution to the specified height through the scale 12;

[0032] S5: Cover the beaker mouth with plastic wrap to ensure good sealing to prevent moisture evaporation from affecting the experimental results, and move the beaker containing the bearing device and the solution into a constant temperature water tank with a preset temperature;

[0033] S6: After the beaker enters the constant temperature water tank, immediately start the timer and record the start time of the test;

[0034] S7: Use the camera to monitor and record the specimen state in real time. When the specified test time is reached, turn off the timer and carefully take out the device.

[0035] Compared with the prior art, a multifunctional aluminum alloy exfoliation corrosion specimen bearing device and its use method of the present invention have the following advantages:

[0036] 1. By introducing components such as an L-shaped support frame, support rods, and a T-shaped mechanism, the present invention can conduct batch tests on corrosion specimens of different specifications and angles, with advantages of high efficiency, convenience, and strong applicability. It provides an important auxiliary means for the efficient and accurate detection of exfoliation corrosion tests of aluminum alloys. Moreover, this device can also be applied to other full-immersion tests. Compared with the traditional triangular support method, it significantly shortens the specimen placement time and experimental cycle, solves problems such as easy dropping or tilting of specimens and inconvenient placement in the traditional triangular support method, and improves the simplicity and efficiency of experimental operations.

[0037] 2. The present invention uses a scale to observe the solution height and is equipped with a camera to monitor and record the corrosion situation of the specimen in real time, ensuring the precise control of key parameters during the experiment. At the same time, it provides a complete record of the experimental process, significantly reducing human errors and ensuring the consistency and reliability of data.

[0038] 3. The present invention easily adjusts the distance between the clamping parts through adjusting nuts and uses convenient operation methods such as square through-hole quick-connect hooks and support rods, simplifying the experimental preparation and execution processes, and reducing operation complexity and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0040] Figure 1 is a schematic diagram of the loading device and specimen;

[0041] Figure 2 is the front view of the loading device and specimen placement;

[0042] Figure 3 is the left view of the loading device and specimen placement;

[0043] Figure 4 is the top view of the loading device and specimen placement;

[0044] Figure 5 is the structural schematic diagram of the loading device.

[0045] 1. Box body; 2. Support rod; 3. L-shaped support frame; 4. L-shaped hook; 401. Hook main body; 402. Hook part; 403. Connection part; 404. Connection hole; 5. T-shaped mechanism; 501. Clamping part; 502. Screw rod; 503. Adjusting nut; 504. Gasket; 6. Specimen; 7. First support hole; 8. U-shaped hole; 9. Second support hole; 10. Semi-circular positioning groove; 11. Square through hole; 12. Scale; 13. Camera; 14. Angle gauge. Detailed implementation mode

[0046] In order to make the technical means, achieved purpose and effects of the present invention easy to understand, the embodiments of the present invention will be described in detail below with reference to specific drawings.

[0047] It should be noted that all terms for indicating directionality and positional indication in the present invention, such as: "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "bottom", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection situation between components in a certain specific state, and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0049] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0050] The forms of exfoliation corrosion specimens of aluminum alloys are mostly rectangular. According to the requirements of standards such as GB / T 22639-2022, ASTM G66-23, and ASTM G34-23, punching or shearing methods are used to sample the specimens during processing. The specimen size is usually (100 + 2T) mm × (50 + 2T) mm (length × width), where T is the original thickness of the product. The specific test process is as follows: 1. After sampling according to the above requirements, number the specimens; 2. Pretreat the specimens, including measuring the size, calculating the solution volume, brightening, etc.; 3. Prepare the solution; 4. Place the specimens according to the standard requirements and pour in the solution; 5. Transfer the container to a constant temperature water tank for insulation and start timing. Since the standard states that the container (with a lid) for holding the test solution and the specimen support are made of glass, plastic, or other inert materials without a specific form, at present, most laboratories use a triangular support. When pouring in the solution and transferring, the solution sloshing easily causes the specimens to fall, and it is difficult to achieve a fixed inclination angle placement and real-time monitoring of the corrosion morphology.

[0051] The first object of the present invention is to disclose a multifunctional bearing device for exfoliation corrosion specimens of aluminum alloys, including a box body 1 with openings on the front and rear sides;

[0052] At least one support rod 2 for supporting specimens 6 placed horizontally, vertically, or at a set angle;

[0053] An L-shaped support frame 3 arranged inside the box body 1, which is used in cooperation with the support rod 2 to support specimens 6 at a set angle;

[0054] At least one L-shaped hook 4 arranged along the up and down direction of the box body 1 for hanging specimens 6 placed vertically;

[0055] A T-shaped mechanism 5 arranged along the left and right direction at the bottom of the box body 1 for fixing specimens 6 placed vertically.

[0056] Place specimens 6 horizontally, vertically, or at a specific angle according to the test requirements, and select appropriate support rods 2, L-shaped support frames 3, or L-shaped hooks 4. For horizontal placement, according to the size of specimens 6, fix two support rods 2 inside the box body 1 and place specimens 6 on the support rods; for vertical hanging, install the L-shaped hook 4 and hang it on specimens 6, and then fix the hook at a suitable position inside the box body 1; for placement at a set angle, utilize the combination of the L-shaped support frame 3 and the support rod 2, and adjust the angle between the support rod 2 and the L-shaped support frame 3 through a sector angle ruler 14 to keep specimens 6 at the required angle; fix specimens 6. For specimens 6 that need to be fixed vertically, use the T-shaped mechanism 5 for fixation.

[0057] This setting realizes the precise control of the specimen 6 from multiple angles and directions by introducing components such as the L-shaped support frame 3, the support rod 2, and the T-shaped mechanism 5. Compared with the traditional triangular support method, it significantly shortens the placement time of the specimen 6 and the experimental period, solves the problems that the specimen 6 is prone to falling or tilting and is inconvenient to place in the traditional triangular support method, and improves the simplicity and efficiency of the experimental operation.

[0058] Preferably, the device is made of corrosion-resistant materials. The corrosion-resistant materials can be one or more of acrylic plate PMMA, polytetrafluoroethylene PTFE, Teflon, fiberglass FRP, fiber-reinforced plastic, and ceramic materials.

[0059] This setting can significantly extend the service life of the equipment, reduce the failures caused by material aging or corrosion, avoid the influence of material self-corrosion on the experimental results, and ensure the authenticity and reliability of the data.

[0060] Specifically, the box body 1 is of a rectangular frame structure.

[0061] Specifically, a plurality of first support holes 7 are symmetrically arranged on the left and right side walls of the box body 1, and the first support holes 7 are used for placing the support rod 2.

[0062] According to the size and required angle of the specimen 6, select appropriate positions from the plurality of first support holes 7 on the left and right side walls of the box body 1 to insert two support rods 2. Insert the two support rods 2 into the selected first support holes 7 to ensure that the two support rods 2 are horizontal and stable. Place the specimen 6 directly on the support rods 2 to ensure its stability and no sliding.

[0063] This setting can be flexibly adjusted according to the requirements of specimens 6 of different sizes and shapes by setting a plurality of first support holes 7. The stable support structure helps to keep the position of the specimen 6 in the solution unchanged, avoiding the problems of the specimen 6 falling or tilting caused by unstable support in the traditional method.

[0064] Specifically, U-shaped holes 8 and a plurality of second support holes 9 are arranged on the left and right side walls of the box body 1. The plurality of second support holes 9 are uniformly arranged in a semi-circular shape centered on the U-shaped holes 8. The U-shaped holes 8 are used for placing the L-shaped support frame 3, and the second support holes 9 are used for placing the support rod 2.

[0065] For the test that requires a set angle, first select the U-shaped hole 8 to place the L-shaped support frame 3. Then, insert the support rod 2 into the selected second support hole 9 to ensure good cooperation with the L-shaped support frame 3. When placing the specimen 6 on the L-shaped support frame 3 and the support rod 2, the inclination angle of the specimen 6 is the set angle, and the specimen 6 abuts against the junctions of the two sides of the L-shaped support frame 3.

[0066] This setting, through the combination of the U-shaped hole 8 and the L-shaped support frame 3, with precise hole position design, ensures that the support rod 2 and the L-shaped support frame 3 can conveniently achieve stable support of the specimen 6 at different angles, simulating the actual service environment. The structure design is intuitive, easy to understand and operate, reducing the preparation time and complexity.

[0067] Specifically, an angle scale 14 is provided between the multiple second support holes 9 and the U-shaped hole 8, which is used to conveniently place the support rod 2 according to the set angle.

[0068] According to the required angle and the angle scale 14, it is convenient to select a suitable hole position from the multiple second support holes 9 to insert the support rod 2, ensuring that the support rod 2 is placed at the required angle to support the inclined state of the specimen 6.

[0069] This setting, through the design of the angle scale 14, can conveniently achieve precise adjustment of the angle of the support rod 2, ensuring that the specimen 6 can be placed at a predetermined angle, simulating various conditions in the actual service environment, and improving the accuracy and repeatability of the experiment.

[0070] Specifically, a plurality of semi-circular positioning grooves 10 are arranged in parallel along the front-back direction on the top of the box body 1. The semi-circular positioning grooves 10 are used to place the support rod 2. A square through-hole 11 is arranged on the top of the box body 1 along the direction perpendicular to the semi-circular positioning grooves 10. The square through-hole 11 is used for the L-shaped hook 4 to connect the support rod 2.

[0071] When a test that requires vertical suspension is to be carried out, insert the support rod 2 into the selected semi-circular positioning groove 10 to ensure that the support rod is placed horizontally and stably. Pass one end of the L-shaped hook 4 through the square through-hole 11, and then fix the other end on the support rod 2 to ensure that the hook is firm and reliable. Hang the specimen 6 on the L-shaped hook 4 and adjust its position as needed to ensure the stability of the specimen 6 in the solution.

[0072] This setting, through the semi-circular positioning groove 10 and the square through-hole 11, enables the precise connection between the L-shaped hook 4 and the support rod 2, ensuring that the specimen 6 can be stably suspended and reducing the errors caused by unstable suspension.

[0073] Specifically, the support rod 2 is a cylinder, a prism, or other special-shaped structures, and the L-shaped support frame 3 is one or more of acrylic PMMA, polytetrafluoroethylene PTFE, Teflon, fiberglass FRP, fiber-reinforced plastic, and ceramic materials.

[0074] By selecting a suitable cross-sectional shape, such as square, oval, etc., the stability and load-bearing capacity of the support rod can be significantly improved, preventing the movement of the specimen 6 in the solution. Selecting high-strength materials and optimizing the structure design prolongs the service life of the equipment and reduces the maintenance cost.

[0075] Specifically, the L-shaped hook 4 is plate-shaped. The L-shaped hook 4 includes a hook body 401, a hook portion 402, and a connecting portion 403. The hook portion 402 is provided on the horizontal side of the hook body 401, and the connecting portion 403 is provided at the top of the vertical side of the hook body 401. A connecting hole 404 is provided in the connecting portion 403, and the connecting hole 404 is used to connect to the support rod 2.

[0076] Pass the connecting portion 403 of the L-shaped hook 4 through the square through-hole 11 at the top of the box body 1, align the connecting hole 404 with the position of the support rod 2, insert the support rod 2 into the connecting hole 404 to ensure that the L-shaped hook 4 is firmly fixed on the support rod 2, and hang the specimen 6 on the hook portion 402 of the L-shaped hook 4 to ensure that the specimen 6 is stably suspended.

[0077] This setting can conveniently adjust the position and angle of the L-shaped hook 4 to adapt to specimens 6 of different sizes and shapes, ensuring that the specimens 6 can be stably suspended and avoiding errors caused by unstable suspension.

[0078] Specifically, the T-shaped mechanism 5 includes:

[0079] Multiple clamping portions 501 for clamping the specimen 6;

[0080] A screw rod 502 passing through the clamping portion 501 and cooperating with it to achieve sliding distance adjustment;

[0081] An adjusting nut 503 cooperating with the screw rod 502, and by rotating the adjusting nut 503, the position of the clamping portion 501 is adjusted to clamp or loosen the specimen 6;

[0082] A gasket 504 provided on the screw rod 502 outside the box body 1 for increasing friction and stability;

[0083] Among them, the clamping portion 501, the screw rod 502, the adjusting nut 503, and the gasket 504 cooperate with each other to ensure that the specimen 6 can be firmly fixed at a predetermined position.

[0084] Each clamping portion 501 has a hole allowing the screw rod 502 to pass through. The number of clamping portions 501 can be adjusted according to actual needs, usually two or more, to provide a better clamping effect. The screw rod 502 passes through the holes of the clamping portion 501. The function of the screw rod 502 is to adjust the position of the clamping portion 501 by sliding distance adjustment. The adjusting nut 503 is installed on the screw rod 502, on both sides of the clamping portion 501. By rotating the adjusting nut 503, the distance between the clamping portions 501 can be adjusted, thereby achieving clamping or loosening of the specimen 6. The gasket 504 is provided on the screw rod 502 outside the box body 1, outside the adjusting nut 503. The gasket 504 increases the friction between the screw rod 502 and the box body 1 and improves the stability of the overall structure.

[0085] The design of the clamping part 501 and the screw 502 enables the specimen 6 to be firmly clamped, avoiding displacement or dropping during the experiment. The adjusting nut 503 can conveniently adjust the distance between the clamping parts 501 to adapt to specimens 6 of different sizes and shapes, providing higher flexibility. The gasket 504 and the connecting nut 505 increase the stability and reliability of the overall structure, reducing the risk of loosening caused by vibration or other external factors.

[0086] This setting allows the operator to quickly find the appropriate clamping position and easily complete the clamping and loosening operations of the specimen 6 by rotating the adjusting nut 503, simplifying the preparation process, reducing the risk of movement of the specimen 6 during the experiment, ensuring the consistency of the experimental conditions, and improving the reliability and repeatability of the data.

[0087] Preferably, the cross-section of the clamping part 501 is T-shaped.

[0088] Preferably, T-shaped through holes are provided at the bottoms of the left and right sides of the box body 1 for the removal or entry of the clamping part 501 into the box body 1.

[0089] Specifically, a scale 12 is provided at the opening edge of the front or rear side of the box body 1 for observing the height of the solution.

[0090] When pouring the solution, observe the scale 12 at the opening edge of the front or rear side of the box body 1 to ensure that the solution height meets the experimental requirements. If the solution height needs to be adjusted, fine-tuning can be performed according to the scale on the scale 12 to achieve accurate height control.

[0091] This setting enables the operator to conveniently read the height of the solution, ensuring the accuracy of the solution addition amount, reducing experimental errors caused by excessive or insufficient solution, and improving the reliability of the experimental results.

[0092] Specifically, a camera 13 is provided at the rear opening of the box body 1 for monitoring and recording the test specimen 6.

[0093] Install the camera 13 at the rear opening of the box body 1 to ensure that its viewing angle can cover all specimens 6 for comprehensive monitoring. Connect the camera 13 to a power source and data transmission devices such as a computer or storage device to ensure real-time monitoring and recording of the corrosion situation of the specimen 6.

[0094] This setting can monitor the corrosion situation of the specimen 6 in real time, eliminating the need for frequent manual observation, reducing interference with the experimental environment, facilitating subsequent detailed analysis and comparison, improving the integrity and accuracy of the experimental data, avoiding environmental changes and errors caused by human operations due to frequent opening of the container, and ensuring the consistency of the experimental conditions.

[0095] Preferably, multiple cameras 13 can be set. Each camera 13 conducts video recording of the specimen 6 at a different angle and performs real-time monitoring through a wireless network to record the state of the specimen.

[0096] Another object of the present invention is to disclose a method for using a multifunctional aluminum alloy exfoliation corrosion specimen bearing device. Based on any of the above multifunctional aluminum alloy exfoliation corrosion specimen bearing devices, the specific steps are as follows:

[0097] S1: Determine the placement method of the specimen 6 (horizontal, vertical or specific angle) according to the test standard;

[0098] Ensure that the specimen 6 can be stably supported in a predetermined manner during the experiment to simulate the actual service environment.

[0099] S2: Assemble the support structure. If it is placed horizontally, select a support rod 2 of an appropriate length and insert it into the corresponding holes on the box body 1 (rectangular frame); if it is vertically suspended, install the L-shaped hook 4 on the box body 1 to ensure its correct and firm position; for inclined placement at different angles, use the fan-shaped angle ruler 14 to adjust the angle of the support rod 2 and fix it in the semi-circular positioning groove 10;

[0100] Provide stable support to meet the requirements of the specimen 6 placement method and prevent the specimen 6 from sliding or falling.

[0101] S3: Place the specimen 6 horizontally, vertically or inclined on the support structure in a predetermined manner. Ensure that the specimens 6 do not contact each other and maintain a certain distance from the container wall;

[0102] Avoid the mutual influence between the specimens 6 and contact with the container wall, and ensure the independence of each specimen 6 and the accuracy of the experimental results.

[0103] S4: Carefully place the assembled bearing device into a 5L beaker, taking care not to collide with the specimen 6. According to the requirements of the test standard, accurately add an appropriate amount of corrosion solution to the specified height through a scale;

[0104] Maintain the stability of the experimental environment and avoid the influence of water evaporation on the experimental results.

[0105] S5: Cover the mouth of the beaker with plastic wrap to ensure good sealing to prevent water evaporation from affecting the experimental results, and move the beaker containing the bearing device and the solution into a constant temperature water tank with a preset temperature;

[0106] Maintain the stability of the experimental environment and avoid the influence of water evaporation on the experimental results.

[0107] S6: After the beaker enters the constant temperature water tank, immediately start the timer and record the start time of the test;

[0108] Accurately record the time nodes of the experiment to facilitate subsequent data analysis.

[0109] S7: Use camera 13 to monitor the state of specimen 6 in real time and record videos. When the specified test time is reached, turn off the timer and carefully take out the beaker.

[0110] Provide a complete record of the experimental process to facilitate subsequent detailed analysis and comparison, and improve the integrity and accuracy of the data.

[0111] Through precise support structure design and measurement with scale 12, ensure the accuracy of the position of specimen 6 and the height of the solution, improve the reliability and repeatability of the experimental results, reduce human errors, facilitate quickly finding suitable support hole positions and through holes, simplify the preparation process, and through real-time monitoring and video recording by camera 13, provide a complete record of the experimental process, facilitate subsequent detailed analysis, increase the integrity of the experimental data, and reduce the interference caused by manual observation.

[0112] The multifunctional aluminum alloy exfoliation corrosion specimen bearing device and its usage method designed according to the present invention are used to test 4 different specifications of aluminum alloy exfoliation corrosion specimens. The quantity, specifications and placement methods of test specimens 6 are shown in Table 1. Compare the triangular support method with the bearing method of the above device, and count the relevant data. Among them, Table 2 shows the test results of the triangular support, and Table 3 shows the test results of the present invention.

[0113]

[0114]

[0115]

[0116] As can be seen from the above table, using the present invention for operation can save at least more than 25% of the operation time compared with the triangular support method, and the loading qualification rates are all 100%, which is higher than the results of the common triangular support method. Thus, it can be seen that the multifunctional aluminum alloy exfoliation corrosion specimen 6 bearing device of the present invention can provide an accurate and efficient solution for specimen 6 bearing in the laboratory. In addition, for the test where the corrosion grade of specimen 6 reaches the highest grade within the standard specified time, real-time monitoring can end the test in advance and improve the testing efficiency of the testing institution.

[0117] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multifunctional aluminum alloy exfoliation corrosion specimen supporting device, characterized in that: A box body (1) comprising front and rear openings; At least one support rod (2) for supporting a sample (6) placed horizontally, vertically or at a set angle; An L-shaped support frame (3) disposed in the box (1) and used in conjunction with the support rod (2) to support the sample (6) at a set angle; At least one L-shaped hook (4) arranged in the up-down direction of the box (1) and used for hanging the vertically placed sample (6); A T-shaped mechanism (5) is arranged at the bottom of the box (1) along the left-right direction and is used to fix the vertically placed sample (6).

2. The multifunctional aluminum alloy exfoliation corrosion specimen supporting device according to claim 1 is characterized in that: A plurality of first support holes (7) are symmetrically arranged on the left and right side walls of the box body (1), and the first support holes (7) are used to place the support rods (2).

3. The multifunctional aluminum alloy exfoliation corrosion specimen supporting device according to claim 2 is characterized in that: The left and right side walls of the box body (1) are provided with a U-shaped hole (8) and a plurality of second support holes (9), the plurality of second support holes (9) being evenly arranged in a semicircle with the U-shaped hole (8) as the center, the U-shaped hole (8) being used for placing the L-shaped support frame (3), and the second support holes (9) being used for placing the support rod (2).

4. The multifunctional aluminum alloy exfoliation corrosion specimen supporting device according to claim 3 is characterized in that: An angle ruler (14) is provided between the plurality of second support holes (9) and the U-shaped hole (8) for facilitating the placement of the support rod (2) according to a set angle.

5. The multifunctional aluminum alloy exfoliation corrosion specimen supporting device according to claim 2, characterized in that: The L-shaped hook (4) is plate-shaped, and comprises a hook body (401), a hook portion (402) and a connecting portion (403), wherein the hook portion (402) is arranged on a horizontal side of the hook body (401), and the connecting portion (403) is arranged on a top of a vertical side of the hook body (401), and the connecting portion (403) is provided with the connecting hole (404), and the connecting hole (404) is used to connect the support rod (2).

6. The multifunctional aluminum alloy exfoliation corrosion specimen supporting device according to claim 1, characterized in that: The T-shaped mechanism (5) comprises: A plurality of clamping parts (501) for clamping the sample (6); A screw rod (502) passes through the clamping portion (501) and cooperates therewith to achieve sliding distance adjustment; An adjusting nut (503) cooperates with the screw rod (502), and the position of the clamping portion (501) is adjusted by rotating the adjusting nut (503), thereby clamping or loosening the sample; A gasket (504) is arranged on the screw rod (502) outside the box body (1) and is used to increase friction and stability; The clamping portion (501), the screw rod (502), the adjusting nut (503) and the gasket (504) cooperate with each other to ensure that the sample can be firmly fixed at a predetermined position.

7. The multifunctional aluminum alloy exfoliation corrosion specimen supporting device according to claim 6, characterized in that: T-shaped through holes are provided at the bottom of the left and right sides of the box body (1) for taking out the clamping portion (501) or inserting it into the box body (1).

8. The multifunctional aluminum alloy exfoliation corrosion specimen supporting device according to claim 1, characterized in that: A ruler (12) is provided on the front or rear opening edge of the box body (1) for observing the height of the solution.

9. The multifunctional aluminum alloy exfoliation corrosion specimen supporting device according to claim 1, characterized in that: A camera (13) is provided at the rear opening of the box body (1) for monitoring and recording the test sample.

10. A method for using a multifunctional aluminum alloy exfoliation corrosion specimen supporting device, characterized in that: The multifunctional aluminum alloy exfoliation corrosion specimen supporting device applicable to any one of claims 1 to 9 specifically comprises the following steps: S1: Determine the placement of the specimen (6) according to the test standard; S2: Assemble the support structure. If it is placed horizontally, select a support rod (2) of appropriate length and insert it into the first support hole (7) on the box (1); if it is hung vertically, install the L-shaped hook (4) on the box (1) to ensure that it is correctly positioned and secure; for tilted placement at different angles, select the second support hole (9) corresponding to the angle ruler (14) of the set angle, and insert the support rod (2) into the second support hole (9); S3: placing the samples (6) on the support structure in a predetermined manner, ensuring that the samples (6) do not contact each other and maintain a certain distance from the container wall; S4: Carefully place the assembled carrier into a 5L beaker, taking care not to hit the sample (6). According to the requirements of the test standard, accurately add an appropriate amount of corrosion solution to the specified height using the scale 12; S5: Cover the mouth of the beaker with plastic wrap to ensure a good seal to prevent water evaporation from affecting the experimental results, and move the beaker containing the carrier and solution into a constant temperature water tank with a preset temperature; S6: After the beaker enters the constant temperature water tank, start the timer immediately and record the start time of the test; S7: Use the camera (13) to monitor and record the state of the sample in real time. When the specified test time is reached, turn off the timer and carefully remove the device.

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