A corrosion resistance testing device and method based on low-voltage anode foil preparation

Abstract

The present invention discloses a corrosion resistance testing device and method based on low-voltage anode foil preparation, which relates to the field of low-voltage anode foil testing technology, including a testing machine with a detection pool, the detection pool is filled with acid for detecting aluminum foil; a circulation device is provided in the detection pool, and the circulation device includes: a pair of flow guide mechanisms and a pair of driving members; wherein the pair of flow guide mechanisms are provided in the detection pool; the flow guide mechanism includes a limit frame, a pair of first flow guide covers, and two groups of second flow guide covers. The present invention cooperates with the flow guide mechanism and the driving member, drives the flow of the acid liquid, regulates the power of the driving member, and accurately controls the extrusion thrust of the acid liquid on the aluminum foil, thereby offsetting the gravity of the aluminum foil and allowing the aluminum foil to be almost suspended in the detection pool, which can greatly reduce the interference received by the acid liquid when in contact with the aluminum foil; at the same time, by driving the flow of the acid liquid, the contact reaction efficiency between the acid liquid and the aluminum foil is greatly improved, significantly improving the detection effect.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage anode foil testing, and in particular to a corrosion resistance testing device and method based on low-voltage anode foil preparation. Background Art

[0002] Low-voltage anode foil is a key material for aluminum electrolytic capacitors. During its production process, the aluminum foil is first subjected to surface corrosion and pore treatment to significantly increase its specific surface area; then it is made into corroded foil through a chemical process and used as the positive electrode of the aluminum electrolytic capacitor.

[0003] However, due to the complexity of the production process, quality control of low-voltage anode foil is challenging. Even batches of aluminum foil produced by the same manufacturer can vary in corrosion resistance. Using aluminum foil that doesn't meet corrosion resistance standards can significantly reduce the performance and lifespan of capacitors. Therefore, corrosion testing is essential before using aluminum foil to ensure the quality of aluminum electrolytic capacitors.

[0004] For example, the Chinese patent publication number CN215574543U discloses a low-voltage anode foil corrosion resistance test device, comprising a test container made of transparent glass, a fixed plate fixed on one side of the top of the test container, and a movable plate movably connected to the other side of the top of the test container, a power supply fixedly connected to the top of the fixed plate, and the positive and negative poles of the power supply are respectively connected to a first conductive head and a second conductive head through wires, the first conductive head and the second conductive head extend into the interior of the test container, and a clamp is fixed to the bottom end of the first conductive head, a material guide assembly is fixed to the inner wall of one side of the test container, and an acid measuring assembly is provided inside the test container, a pull wire assembly is fixed to the bottom end surface of the movable plate, and the wire between the first conductive head and the positive pole of the power supply passes through the pull wire assembly. The device solves the technical problems of instability in adjusting the acidity of the acid solution and inconvenience in placing or taking aluminum foil in the prior art, and achieves the technical effects of rapid shedding of the filter cake after filtration and effective crushing of the filter cake.

[0005] In the corrosion resistance test, the above-mentioned device uses a clamp to construct a clamping structure. However, this clamping method has significant disadvantages: when the clamp clamps the aluminum foil, it will form a physical barrier at the contact part, resulting in the acid liquid being unable to fully contact this part of the aluminum foil, making it difficult for it to participate in the corrosion reaction. Not only that, the clamping force exerted by the clamp will cause local deformation of the aluminum foil. After the aluminum foil is deformed, the originally uniform fluid dynamic environment on its surface is broken, and the flow and distribution of the acid liquid on the surface of the aluminum foil are disturbed. This not only reduces the effect of the acid liquid on the surface of the aluminum foil, but also seriously damages the uniformity of the overall contact between the aluminum foil and the acid liquid, ultimately affecting the accuracy of the corrosion resistance test results. Summary of the Invention

[0006] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a corrosion resistance testing device and method based on low-voltage anode foil, which is used to solve the problem proposed in the above-mentioned background technology that the external force generated when the aluminum foil is clamped by a clamping structure easily causes the aluminum foil to deform, and the clamping part forms a shield on the aluminum foil. These two factors interfere with the normal contact between the acid solution and the aluminum foil, resulting in the test results being difficult to accurately reflect the actual corrosion resistance of the aluminum foil.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A corrosion resistance testing device based on low-voltage anode foil includes a testing machine with a detection cell filled with acid for testing aluminum foil; a circulation device is provided in the detection cell, and the circulation device includes:

[0009] A pair of flow guide mechanisms and a pair of driving members; wherein, the pair of flow guide mechanisms are arranged in the detection pool; the flow guide mechanism includes a limit frame, a pair of first flow guide covers and two groups of second flow guide covers; the bottom of the detection pool, the limit frame and the two groups of second flow guide covers form a detection cavity with an open top; the detection cavity is filled with acid liquid, and the aluminum foil is immersed in the acid liquid of the detection cavity; each of the first flow guide covers is respectively arranged on one side of each group of the second flow guide covers, and the interior of each first flow guide cover is connected to the detection cavity through a group of second flow guide covers; the driving member is installed in the detection pool, the output end of the driving member is connected to the first flow guide cover, and the input end of the driving member is immersed in the acid liquid of the detection pool.

[0010] Preferably, the flow guiding mechanism further includes a pair of flow guiding plates respectively arranged on the top of the two groups of second flow guiding covers, and used for limiting the flow direction of the acid liquid guided out from the top of the detection cavity.

[0011] Preferably, the second flow guide cover includes an accumulation chamber, a filter screen, a flow guide section and a guide section; the accumulation chamber is connected to the interior of the first flow guide cover through the filter screen; the flow guide section is connected to one side of the accumulation chamber, and the guide section is connected to one side of the flow guide section, and the interior of the first flow guide cover is connected to the detection chamber through the accumulation chamber, the flow guide section and the guide section in sequence.

[0012] Preferably, both ends of the second air guide cover are rotatably connected to the limit frame through a connecting shaft, and a first torsion spring is arranged between the second air guide cover and the limit frame; an adjustment mechanism is provided on the limit frame, and is used to control the acid liquid discharge direction of the two groups of the second air guide covers.

[0013] Preferably, the adjustment mechanism includes a winding shaft, a connecting belt, a motor and a plurality of isolation cloths; the plurality of isolation cloths are arranged between the output ends of adjacent guide sections; the winding shaft is rotatably connected to the limit frame, one end of the connecting belt is wound around the winding shaft, and the other end of the connecting belt is fixed to the output end of the topmost guide section; the motor is installed on the limit frame and is used to drive the winding shaft to rotate around its axis.

[0014] Preferably, a clamping mechanism is provided above the corresponding guide plate on the limit frame; the clamping mechanism includes a pair of clamping plates and a second torsion spring; the pair of clamping plates are rotatably connected by a rotating shaft, and the second torsion spring is provided between the pair of clamping plates and the rotating shaft; when the pair of clamping plates lose their restriction, the second torsion spring is used to drive the pair of clamping plates to approach and collide with each other.

[0015] Preferably, the clamping mechanism further includes a plurality of limit blocks; a plurality of guide holes are arranged side by side on one of the clamping plates; the plurality of limit blocks are fixed to the other clamping plate, and the plurality of limit blocks are adapted to the plurality of guide holes.

[0016] Preferably, the clamping mechanism further includes a locking mechanism for locking the position of the pair of clamping plates.

[0017] Preferably, the locking mechanism includes a mounting seat, a third torsion spring, a threaded barrel, a threaded rod and a handle; the limit frame is provided with a through hole allowing the mounting seat and a pair of the clamping plates to clamp the aluminum foil through, the mounting seat is arranged on a rotating shaft on a pair of the clamping plates, and the third torsion spring is arranged between the mounting seat and the rotating shaft; the threaded barrel is fixed to the mounting seat, the threaded rod rotates around its axis and is connected to the top of the mounting seat, and the threaded rod is threadedly connected to the threaded barrel; the handle is coaxially fixed to the top of the threaded rod.

[0018] A corrosion resistance testing method based on low-voltage anode foil preparation, using the above-mentioned corrosion resistance testing device based on low-voltage anode foil preparation, specifically includes the following steps:

[0019] Step 1: Immersion test: Place the aluminum foil vertically in the test chamber and allow the acid in the test chamber to corrode the aluminum foil.

[0020] Step 2: Acid circulation: Start the driving part and introduce the acid in the detection pool into the first guide cover through the driving part. The acid in the first guide cover is diverted by the second guide cover and then introduced into the detection cavity, so that the acid is re-introduced into the detection pool through the top of the detection cavity. This cycle forms a continuous upward flow thrust in the detection cavity, pushing the aluminum foil to maintain a relative suspension state.

[0021] Beneficial effects of the present invention:

[0022] By coordinating the flow guide mechanism with the drive element, the flow of the acid is driven, the power of the drive element is regulated, and the extrusion thrust of the acid on the aluminum foil is precisely controlled. This offsets the weight of the aluminum foil, allowing the aluminum foil to almost float in the detection tank. This can significantly reduce the interference caused by the contact between the acid and the aluminum foil. At the same time, by driving the flow of the acid, the contact reaction efficiency between the acid and the aluminum foil is greatly improved, significantly enhancing the detection effect.

[0023] By providing a second flow guide cover and an adjustment mechanism, a structure is formed in which the flow direction of the acid liquid in the detection chamber can be adjusted, thereby further accurately controlling the force with which the acid liquid flow in the detection chamber counteracts the gravity of the aluminum foil. When the second flow guide cover is driven to rotate upward, it squeezes the isolation cloth to bulge, thereby compressing the gap between the aluminum foil and the isolation cloth, thereby increasing the flow rate between the aluminum foil and the outlet end of the second flow guide cover, thereby facilitating the aluminum foil to counteract gravity and suspend.

[0024] By setting a clamping mechanism and a locking mechanism, the clamping plate is locked by the locking mechanism, so that the clamping of the aluminum foil can be loosened, which is convenient for placing the aluminum foil for corrosion testing; and when the aluminum foil needs to be removed, the clamping of the aluminum foil can be restored by simply moving the clamping plate upwards, which is convenient for removing the aluminum foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the three-dimensional enlarged structure of the circulation device of the present invention;

[0028] Figure 3 This is a partially cutaway, three-dimensional, enlarged structural diagram of the circulation device of the present invention from a first viewing angle;

[0029] Figure 4 This invention Figure 3 Schematic diagram of the enlarged structure of area A in the middle;

[0030] Figure 5 This is a partially cutaway, three-dimensional, enlarged structural diagram of the circulation device of the present invention from a second viewing angle;

[0031] Figure 6 This invention Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0032] Figure 7 This is a schematic diagram of the acid flow in the first circulation state of the circulation device of the present invention;

[0033] Figure 8 This invention Figure 7 Schematic diagram of the enlarged structure of the middle C area;

[0034] Figure 9 This is a schematic diagram of the flow of acid in the second circulation state of the circulation device of the present invention;

[0035] Figure 10 This invention Figure 9 Schematic diagram of the enlarged structure of the middle D area;

[0036] Figure 11 It is a schematic diagram of the three-dimensional enlarged structure of the second air deflector of the present invention;

[0037] Figure 12 It is a schematic diagram of a three-dimensional enlarged structure of the clamping mechanism of the present invention;

[0038] Figure 13 This is a schematic diagram of the three-dimensional exploded and enlarged structure of the clamping mechanism of the present invention;

[0039] Figure 14 This is a partially cutaway, front-view, enlarged structural diagram of the splint of the present invention;

[0040] Figure 15 It is a flow chart of the method of the present invention.

[0041] In the figure: 1. testing machine; 2. detection pool; 3. circulation device; 31. flow guide mechanism; 311. limit frame; 312. first flow guide cover; 313. second flow guide cover; 3131. accumulation chamber; 3132. filter screen; 3133. flow guide section; 3134. guide section; 314. first torsion spring; 315. flow guide plate; 316. adjustment mechanism; 3161. isolation cloth; 3162. reel; 3163. connecting belt; 3164. motor; 32. driving part; 4. clamping mechanism; 41. clamping plate; 42. flow guide hole; 43. limit block; 44. locking mechanism; 441. mounting seat; 442. third torsion spring; 443. threaded barrel; 444. threaded rod; 445. handle; 5. aluminum foil. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] Example 1: Please refer to Figures 1-14 As shown in FIG, a corrosion resistance test device based on low-voltage anode foil is prepared, such as Figure 1-Figure 4As shown, it includes a testing machine 1 with a detection pool 2, the detection pool 2 is filled with acid for detecting aluminum foil 5; a circulation device 3 is provided in the detection pool 2, and the circulation device 3 includes a pair of guide mechanisms 31 and a pair of driving members 32; wherein, the pair of guide mechanisms 31 are provided in the detection pool 2; the guide mechanism 31 includes a limit frame 311, a pair of first guide covers 312 and two sets of second guide covers 313; the bottom of the detection pool 2, the limit frame 311 and the two sets of second guide covers 313 form a detection cavity with an open top; the detection cavity is filled with acid, The aluminum foil 5 is immersed in the acid liquid of the detection chamber; each first flow guide cover 312 is respectively arranged on one side of each group of second flow guide covers 313, and the interior of each first flow guide cover 312 is connected to the detection chamber through a group of second flow guide covers 313; the driving member 32 is installed in the detection pool 2, the output end of the driving member 32 is connected to the first flow guide cover 312, and the input end of the driving member 32 is immersed in the acid liquid of the detection pool 2; it can be understood that the driving member 32 is a prior art, such as a submersible pump, and all materials in contact with the acid liquid in the detection pool 2 are corrosion-resistant materials.

[0044] It should be noted that the detection cavity is a hollow plate structure, and its width is slightly larger than the thickness of the aluminum foil 5. This design allows the aluminum foil 5 to be placed nearly vertically under the support of the side walls of the detection cavity when placed in the detection cavity. For example, the aluminum foil 5 (such as Figure 8 The angle between the aluminum foil 5 and the bottom of the detection cell 2 is maintained at 80°-85°. This placement significantly reduces the contact between the aluminum foil 5 and other structures, effectively reducing the interference caused by the acid when it comes into contact with the aluminum foil 5.

[0045] When the driver 32 is activated, the acid in the detection tank 2 is driven into the detection chamber. The acid is squeezed from the two opposing sides of the aluminum foil 5 toward the center of the aluminum foil 5, then flows upward through the top of the detection chamber back into the detection tank 2, forming a circular flow. During this process, by regulating the power of the driver 32, the extrusion thrust of the acid on the aluminum foil 5 can be precisely controlled, thereby offsetting the gravity of the aluminum foil 5 and allowing the aluminum foil 5 to almost float in the detection tank 2, thereby conducting corrosion testing. In addition, the circular flow of the acid greatly improves the efficiency of its contact reaction with the aluminum foil 5, significantly enhancing the detection effect.

[0046] See also Figure 3-Figure 6 The flow guiding mechanism 31 further includes a pair of flow guiding plates 315 respectively arranged on the top of the two groups of second flow guiding covers 313, and used to limit the flow direction of the acid liquid guided out from the top of the detection cavity.

[0047] It should be noted that the cross section of the pair of guide plates 315 is a triangle with an open top, together forming a structure similar to a venturi tube. With this special structure, the detection cavity becomes an area with a slow flow rate of the acid liquid. This effectively avoids the problem of difficulty in controlling the aluminum foil 5 (such as Figure 8The problem of the aluminum foil 5 being suspended in the acid solution (as shown) is addressed. Simultaneously, the openings at the top of the pair of guide plates 315 cooperate to limit the aluminum foil 5, allowing it to maintain a relatively vertical position. Furthermore, this structural design increases the overall width of the detection chamber, allowing it to accommodate more acid. This allows more acid to interact with the aluminum foil 5, significantly improving the effectiveness of detecting its corrosive properties.

[0048] See also Figure 3-Figure 6 and Figure 11 The second flow guide cover 313 includes an accumulation chamber 3131, a filter screen 3132, a flow guide section 3133 and a guide section 3134; the accumulation chamber 3131 is connected to the interior of the first flow guide cover 312 through the filter screen 3132; the flow guide section 3133 is connected to one side of the accumulation chamber 3131, and the guide section 3134 is connected to one side of the flow guide section 3133. The interior of the first flow guide cover 312 is connected to the detection chamber through the accumulation chamber 3131, the flow guide section 3133 and the guide section 3134 in sequence.

[0049] It should be noted that, in order to realize the aluminum foil 5 (such as Figure 8 In order to precisely control the suspended state (as shown in the figure), the device uses the second flow guide hood 313 to further regulate the direction of the upward flow of the acid liquid in the detection chamber. The acid liquid first flows through the filter screen 3132, which can not only filter out impurities in the acid liquid, but also defoam the bubbles generated in the acid liquid. The acid liquid that has been filtered and defoamed will gradually accumulate in the accumulation chamber 3131. Subsequently, the acid liquid enters the guide section 3134 under the guidance of the guide section 3133 and is discharged from the guide section 3134. It is worth noting that the output end of the guide section 3134 is tilted upward, so that the discharged acid liquid pushes the aluminum foil 5 at an inclined upward angle rather than vertically. This inclined thrust is more convenient for offsetting the gravity of the aluminum foil 5 and helping the aluminum foil 5 to maintain a suspended state.

[0050] See also Figure 3-Figure 6 The two ends of the second air guide cover 313 are rotatably connected to the limit frame 311 through a connecting shaft, and a first torsion spring 314 is arranged between the second air guide cover 313 and the limit frame 311; an adjustment mechanism 316 is arranged on the limit frame 311, and is used to control the acid liquid discharge direction of the two groups of second air guide covers 313.

[0051] It should be noted that when performing corrosion testing on aluminum foils 5 of different weights and thicknesses, it is necessary to control the force with which the flow of acid in the testing chamber offsets the gravity of the aluminum foil 5. At this time, the adjustment mechanism 316 is used to control the synchronous rotation of multiple second flow guide covers 313, thereby controlling the direction in which the acid is discharged from the second flow guide covers 313, and then achieving the purpose of controlling the thrust generated by the flow of acid, thereby achieving the purpose of offsetting the gravity of aluminum foils 5 of different weights.

[0052] See also Figure 3-Figure 10The adjustment mechanism 316 includes a winding shaft 3162, a connecting belt 3163, a motor 3164 and a plurality of isolation cloths 3161; the plurality of isolation cloths 3161 are arranged between the output ends of adjacent guide sections 3134; the winding shaft 3162 is rotatably connected to the limiting frame 311, one end of the connecting belt 3163 is wound around the winding shaft 3162, and the other end of the connecting belt 3163 is fixed to the output end of the topmost guide section 3134; the motor 3164 is installed on the limiting frame 311, and is used to drive the winding shaft 3162 to rotate around its axis.

[0053] It should be noted that the motor 3164 drives the winding shaft 3162 to rotate, thereby driving the connecting belt 3163 to reel up, and the connecting belt 3163 drives one of the second air guide covers 313 to rotate, and with the cooperation of multiple isolation cloths 3161, drives multiple second air guide covers 313 to rotate synchronously, thereby achieving the purpose of adjusting the export angles of multiple second air guide covers 313; and when a closed cavity is formed between the isolation cloth 3161 and the adjacent second air guide covers 313, when the multiple second air guide covers 313 rotate upward, the closed cavity formed is reduced, and then the isolation cloth 3161 is squeezed to bulge, so that the gap between the aluminum foil 5 and the isolation cloth 3161 can be compressed, thereby increasing the flow rate between the aluminum foil 5 and the export end of the second air guide cover 313, which is convenient for pushing the aluminum foil 5 to offset the gravity suspension.

[0054] See also Figure 2-Figure 5 A clamping mechanism 4 is provided above the corresponding guide plate 315 on the limit frame 311; the clamping mechanism 4 includes a pair of clamping plates 41 and a second torsion spring; the pair of clamping plates 41 are rotatably connected by a rotating shaft, and the second torsion spring is provided between the pair of clamping plates 41 and the rotating shaft; when the pair of clamping plates 41 lose their restriction, the second torsion spring is used to drive the pair of clamping plates 41 to approach and contact each other; the clamping mechanism 4 also includes a locking mechanism 44, which is used to lock the position of the pair of clamping plates 41.

[0055] It should be noted that when the aluminum foil 5 needs to be placed in the detection cavity, the pair of clamps 41 maintain the clamping state of the top of the aluminum foil 5 through the second torsion spring, and then the aluminum foil 5 is placed in the detection cavity. It can be understood that the ends of the pair of clamps 41 are bent on both sides parallel to the guide plate 315. When the aluminum foil 5 is inserted into the detection cavity, the pair of clamps 41 are in conflict with the guide plate 315. As the clamps 41 continue to move, the pair of clamps 41 can be driven to rotate and open with the cooperation of the guide plate 315, thereby making the clamps 41 releases the clamping of the aluminum foil 5, and at this time the bottom of the aluminum foil 5 contacts the bottom of the detection chamber. Therefore, when the clamping plate 41 moves upward to separate from the guide plate 315, the second torsion spring can drive a pair of clamping plates 41 to approach each other and clamp the aluminum foil 5, so as to facilitate the continued movement of the clamping plate 41 to take out the aluminum foil 5; and when the clamping plate 41 contacts the guide plate 315 and releases the clamping of the aluminum foil 5, the state of the clamping plate 41 can be locked by the locking mechanism 44, so that the clamping of the aluminum foil 5 can be released, which is convenient for corrosion detection.

[0056] Example 2: This example differs from Example 1 in that: Figure 12-13 , it can be understood that the present application does not limit the specific structure and installation method of the locking mechanism 44, and only provides a feasible technical solution below; the locking mechanism 44 includes a mounting seat 441, a third torsion spring 442, a threaded barrel 443, a threaded rod 444 and a handle 445; a through hole is provided on the limit frame 311 to allow the mounting seat 441 and a pair of clamps 41 to clamp the aluminum foil 5 through, the mounting seat 441 is arranged on the rotating shaft on the pair of clamps 41, and the third torsion spring 442 is arranged between the mounting seat 441 and the rotating shaft; the threaded barrel 443 is fixed to the mounting seat 441, and the threaded rod 444 is connected to the top of the mounting seat 441 by rotation around its axis, and the threaded rod 444 is threadedly connected to the threaded barrel 443; the handle 445 is coaxially fixed to the top of the threaded rod 444.

[0057] It should be noted that when the splint 41 conflicts with the guide mechanism 31, as the splint 41 continues to move, the threaded rod 444 is aligned with the threaded barrel 443, and then the threaded rod 444 is rotated so that the locking mechanism 44 is screwed into the threaded barrel 443, thereby locking the splint 41; and since the pair of splints 41 are in an open state at this time, the second torsion spring is in a compressed state, so the second torsion spring can push the locking mechanism 44 in the opposite direction through the splint 41, thereby increasing the conflict force between the threaded rod 444 and the threaded barrel 443, thereby preventing the locking mechanism 44 from loosening.

[0058] See also Figure 12-14 , the clamping mechanism 4 (such as Figure 5One of the splints 41 is provided with a plurality of guide holes 42 arranged side by side; the plurality of limit blocks 43 are fixed to the other splint 41, and the plurality of limit blocks 43 are adapted to the plurality of guide holes 42.

[0059] It should be noted that the limit block 43 is an arc-shaped structure with the axis of the rotating shaft on the clamping plate 41 as the center of the circle, and a tapered portion is provided at one end of the arc-shaped structure. When the pair of clamping plates 41 are opened at different angles, the degree to which the tapered portion is inserted into the guide hole 42 is different. Then, when the pair of clamping plates 41 are opened at different angles, the opening degree of the guide hole 42 is different. By blocking the top of the guide plate 315 by the clamping plate 41, the acid liquid in the detection chamber can only be discharged from the guide hole 42. By controlling the opening degree of the guide hole 42, the flow rate of the acid liquid in the detection chamber can be controlled, thereby achieving precise control of the aluminum foil 5 (such as Figure 8 The thrust (as shown) is convenient for ensuring that the aluminum foil 5 is suspended in the detection cavity.

[0060] See also Figures 1-15 A corrosion resistance testing method based on low-voltage anode foil is provided, using the above-mentioned corrosion resistance testing device based on low-voltage anode foil, and specifically comprising the following steps:

[0061] Step 1: Immersion test: Place the aluminum foil 5 in a vertical position in the test chamber, and corrode the aluminum foil 5 with the acid in the test chamber;

[0062] Step 2: Acid circulation: Start the driver 32 to introduce the acid in the detection pool 2 into the first flow guide 312 through the driver 32. The acid in the first flow guide 312 is diverted by the second flow guide 313 and then introduced into the detection cavity. The acid is then re-introduced into the detection pool 2 through the top of the detection cavity. This cycle forms a continuous upward flow thrust in the detection cavity, pushing the aluminum foil 5 to maintain a relatively suspended state.

[0063] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as limiting the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0064] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0065] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A corrosion resistance testing device based on low-voltage anode foil, comprising a testing machine (1) with a detection pool (2), wherein the detection pool (2) is filled with acid solution for detecting aluminum foil (5); characterized in that: A circulation device (3) is provided in the detection pool (2), and the circulation device (3) comprises: A pair of flow guide mechanisms (31), wherein the pair of flow guide mechanisms (31) are arranged in the detection pool (2); the flow guide mechanism (31) comprises a limit frame (311), a pair of first flow guide covers (312) and two groups of second flow guide covers (313); the bottom of the detection pool (2), the limit frame (311) and the two groups of second flow guide covers (313) form a detection cavity with an open top; the detection cavity is filled with acid liquid, and the aluminum foil (5) is immersed in the acid liquid in the detection cavity; the first flow guide cover (312) and the second flow guide cover (313) are both arranged on the limit frame (311), and the interior of the first flow guide cover (312) is connected to the detection cavity through the plurality of second flow guide covers (313); and a pair of driving members (32), wherein the driving members (32) are mounted on the detection pool (2), the output ends of the driving members (32) are in communication with the first flow guide cover (312), and the input ends of the driving members (32) are immersed in the acid solution of the detection pool (2); The second flow guide cover (313) comprises an accumulation chamber (3131), a filter screen (3132), a flow guide section (3133) and a guide section (3134); the accumulation chamber (3131) is communicated with the interior of the first flow guide cover (312) through the filter screen (3132); the flow guide section (3133) is connected to one side of the accumulation chamber (3131), and the guide section (3134) is connected to one side of the flow guide section (3133); the interior of the first flow guide cover (312) is communicated with the detection chamber through the accumulation chamber (3131), the flow guide section (3133) and the guide section (3134) in sequence; The two ends of the second flow guide cover (313) are rotatably connected to the limit frame (311) via a connecting shaft, and a first torsion spring (314) is provided between the second flow guide cover (313) and the limit frame (311); an adjustment mechanism (316) is provided on the limit frame (311) and is used to control the acid liquid outlet direction of the two groups of the second flow guide covers (313); The adjustment mechanism (316) comprises a reel (3162), a connecting belt (3163), a motor (3164), and a plurality of isolation cloths (3161).

2. A corrosion resistance testing device based on low-voltage anode foil according to claim 1, characterized in that: The flow guiding mechanism (31) further comprises a pair of flow guiding plates (315) respectively arranged on the top of the two sets of second flow guiding covers (313) and used to limit the flow direction of the acid liquid guided from the top of the detection cavity.

3. The corrosion resistance testing device based on low-voltage anode foil according to claim 1, characterized in that: A plurality of the isolation cloths (3161) are arranged between the output ends of adjacent guide sections (3134); the reel (3162) is rotatably connected to the limiting frame (311), one end of the connecting belt (3163) is wound around the reel (3162), and the other end of the connecting belt (3163) is fixed to the output end of the topmost guide section (3134); the motor (3164) is installed on the limiting frame (311) and is used to drive the reel (3162) to rotate around its axis.

4. The corrosion resistance testing device based on low-voltage anode foil according to claim 1, characterized in that: A clamping mechanism (4) is provided above the guide plate (315) corresponding to the limit frame (311); the clamping mechanism (4) comprises a pair of clamping plates (41) and a second torsion spring; the pair of clamping plates (41) are rotatably connected via a rotating shaft, and the second torsion spring is provided between the pair of clamping plates (41) and the rotating shaft; when the pair of clamping plates (41) lose their restriction, the second torsion spring is used to drive the pair of clamping plates (41) to approach and contact each other.

5. The corrosion resistance testing device based on low-voltage anode foil according to claim 4, characterized in that: The clamping mechanism (4) further comprises a plurality of limit blocks (43); a plurality of guide holes (42) are arranged side by side on one of the clamping plates (41); the plurality of limit blocks (43) are fixed to the other clamping plate (41), and the plurality of limit blocks (43) are adapted to the plurality of guide holes (42).

6. The corrosion resistance testing device based on low-voltage anode foil according to claim 5, characterized in that: The clamping mechanism (4) further comprises a locking mechanism (44) for locking the positions of a pair of clamping plates (41).

7. The corrosion resistance testing device based on low-voltage anode foil according to claim 6, characterized in that: The locking mechanism (44) comprises a mounting seat (441), a third torsion spring (442), a threaded barrel (443), a threaded rod (444) and a handle (445); a through hole is provided on the limiting frame (311) for allowing the mounting seat (441) and the pair of clamping plates (41) to pass through to clamp the aluminum foil (5); the mounting seat (441) is arranged on a rotating shaft on the pair of clamping plates (41); the third torsion spring (442) is arranged between the mounting seat (441) and the rotating shaft; the threaded barrel (443) is fixed to the mounting seat (441); the threaded rod (444) is connected to the top of the mounting seat (441) by rotating around its axis, and the threaded rod (444) is threadedly connected to the threaded barrel (443); and the handle (445) is coaxially fixed to the top of the threaded rod (444).

8. A corrosion resistance testing method based on low-voltage anode foil preparation, characterized by: The corrosion resistance testing device prepared based on the low-voltage anode foil according to any one of claims 1 to 7 specifically comprises the following steps: Step 1: Immersion testing: placing the aluminum foil (5) in a vertical position in the testing chamber, and corroding the aluminum foil (5) with the acid in the testing chamber; Step 2, acid liquid circulation: start the driving member (32), and introduce the acid liquid in the detection pool (2) into the first flow guide cover (312) through the driving member (32). The acid liquid in the first flow guide cover (312) is diverted through the second flow guide cover (313) and then introduced into the detection cavity, so that the acid liquid is re-introduced into the detection pool (2) through the top of the detection cavity. In this cycle, a continuous upward flow thrust is formed in the detection cavity, pushing the aluminum foil (5) to maintain a relatively suspended state.

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