Corrosion test system

Abstract

The invention relates to the technical field of corrosion test devices, and discloses a corrosion test system which comprises a support frame, a box body, a corrosion plate, a water supply and drainage device, a water storage device, a fixing assembly, an electrode group, a water injection device, a constant potential rectifier and a controller. The box body and the corrosion plate are arranged on the supporting frame, the corrosion plate is located in the box body, and the water supply and drainage device is used for water inflow and drainage of the box body. The water storage device, the fixing assembly, the electrode group and the water injection device are all arranged on the corrosion plate, the water storage device has a first working position and a second working position and can be switched between the first working position and the second working position, the fixing assembly is used for fixing a test piece, and the water injection device is used for injecting water into the water storage device. And the constant potential rectifier is electrically connected with the electrode group. The water supply and drainage device, the water storage device and the water injection device are in communication connection with the controller. According to the corrosion test system, the corrosion test efficiency can be improved, and the corrosion environment can be conveniently controlled.

Description

Technical Field

[0001] The invention relates to the technical field of corrosion testing devices, and in particular to a corrosion testing system. Background Art

[0002] Polar oceans are of great value to scientific research and exploration, but the polar ocean environment is harsh. Scientific research vessels face a harsh environment of low temperature and corrosion. Studying the corrosion of steel in polar ocean environments is of great significance to polar ocean scientific research and exploration. In the existing corrosion test equipment, during the corrosion test, after the specimen has been corroded in the simulated environment for a period of time, the specimen needs to be taken out for corrosion degree testing. After the corrosion degree test is completed, the specimen is placed back in the corrosion environment, and the above process needs to be repeated many times during the entire test process, resulting in low test efficiency. In addition, during the test, the specimen needs to be taken out and put back in the corrosion environment, which is not conducive to the control of the corrosion environment of the specimen.

[0003] Therefore, there is an urgent need for a corrosion test system to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a corrosion test system to improve the efficiency of the corrosion test and facilitate the control of the corrosion environment.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A corrosion test system, comprising a support frame, a box, a corrosion plate, a water supply and drainage device, a water storage device, a fixing assembly, an electrode group, a water injection device, a constant potential instrument and a controller;

[0007] The box body and the corrosion plate are both arranged on a support frame, the corrosion plate is located in the box body, and the water supply and drainage device is used for water intake and drainage of the box body;

[0008] The water storage device, the fixing assembly, the electrode group and the water injection device are all arranged on the corrosion plate, the water storage device has a first working position and a second working position, and can be switched between the first working position and the second working position, the fixing assembly is used to fix the test piece, and the water injection device is used to inject water into the water storage device; when the water storage device is in the second working position, the test piece and the electrode group are at least partially located below the current highest liquid level of the water storage device, and when the water storage device is in the first working position, the test piece and the electrode group are located above the current highest liquid level of the water storage device, and the constant potentiostat is electrically connected to the electrode group;

[0009] The water supply and drainage device, the water storage device and the water injection device are all communicatively connected with the controller.

[0010] As an improvement of the above technical solution, it also includes a first driving device, which is arranged on a support frame. The first driving device is used to drive the corrosion plate to rotate around a first axis relative to the box body. The first axis extends in a horizontal direction. The first driving device is communicatively connected to the controller.

[0011] As an improvement of the above technical solution, the water storage device includes a shell and a second driving device, the second driving device is arranged on the corrosion plate and connected to the shell, the second driving device is used to drive the shell to switch between the first working position and the second working position relative to the water storage device, and the second driving device is communicatively connected to the controller.

[0012] As an improvement of the above technical solution, the second driving device can drive the shell to rotate relative to the corrosion plate so that the water storage device switches between the first working position and the second working position, and the rotation axis between the shell and the corrosion plate is parallel to the first axis.

[0013] As an improvement of the above technical solution, a plurality of water storage devices are provided, the fixing assembly, the electrode group and the water injection device are all provided in one-to-one correspondence with the water storage devices, and the plurality of water storage devices are arranged at intervals in a direction perpendicular to the first axis.

[0014] As an improvement of the above technical solution, an opening extending along the first direction is provided on the top of the water storage device, and mounting parts corresponding to the water storage devices are provided on the corrosion plate. The fixing assembly is provided on the corresponding mounting parts, and when the water storage device is located in the second working position, the mounting parts extend through the opening into the corresponding water storage device.

[0015] As an improvement of the above technical solution, the corrosion plate is provided with mounting holes corresponding to the water storage devices one by one, the water storage device is arranged in the corresponding mounting holes, the top end of the mounting part is fixed on the top wall of the corresponding mounting hole, and the bottom end extends into the corresponding mounting hole.

[0016] As an improvement of the above technical solution, the support frame includes a base and a support arm group, the support arm group includes two support arms arranged opposite to each other, the two support arms are fixedly arranged on the base, the two ends of the corrosion plate along the first direction are rotatably connected to the two support arms respectively, and the two ends of the box along the first direction are fixedly connected to the two support arms respectively.

[0017] As an improvement of the above technical solution, it also includes a water level monitoring device arranged on the box body, and the water level monitoring device is used to monitor the water level in the box body.

[0018] As an improvement of the above technical solution, it also includes an ultraviolet lamp, which is arranged on the box and is used to irradiate ultraviolet rays into the box.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The corrosion test system of the present invention injects water into the box body through the water supply and drainage device, so that the box body contains a certain amount of water, and simulates the marine environment in the box body to test the corrosion of the test piece in the environment. During the test, the water storage device can be controlled to move from the first working position to the second working position as needed, and a certain amount of water can be injected into the water storage device through the water injection device, so that the test piece and the electrode group are in contact with the water in the water storage device, and the corrosion degree is measured. After the measurement is completed, the water storage device is controlled to move from the second working position to the first working position, at which time the test piece is out of contact with the water in the water storage device, and the corrosion process of the test piece is continued to be simulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a corrosion test system provided by an embodiment of the present invention;

[0022] Figure 2 Schematic diagram of a partial structure of a corrosion test system provided by an embodiment of the present invention Figure 1 ;

[0023] Figure 3 Schematic diagram of a partial structure of a corrosion test system provided by an embodiment of the present invention Figure 2 ;

[0024] Figure 4 Schematic diagram of a partial structure of a corrosion test system provided by an embodiment of the present invention Figure 3 ;

[0025] Figure 5 is a schematic structural diagram of a corrosion plate of a corrosion test system provided in an embodiment of the present invention;

[0026] Figure 6 is a schematic structural diagram of a water storage device of a corrosion test system provided in an embodiment of the present invention;

[0027] Figure 7 Schematic diagram of a partial structure of a corrosion test system provided by an embodiment of the present invention Figure 4 (the water storage device is in the second working position);

[0028] Figure 8 Schematic diagram of a partial structure of a corrosion test system provided by an embodiment of the present invention Figure 5 (the water storage device is in the first working position);

[0029] Fig. 9Schematic diagram of a partial structure of a corrosion test system provided by an embodiment of the present invention Figure 6 .

[0030] In the figure:

[0031] 11. support frame; 111. support arm assembly; 1111. support arm; 112. base;

[0032] 12. Box body; 121. Box cover; 122. Observation window; 123. Handle;

[0033] 13. corrosion plate; 131. mounting portion; 132. mounting hole;

[0034] 14. Water supply and drainage device; 141. Water pump; 142. Water inlet pipe; 143. Drainage pipe;

[0035] 15. water storage device; 151. housing; 152. second drive device; 153. opening;

[0036] 16. Fixing assembly; 161. Fixing piece;

[0037] 17, electrode group; 171, working electrode; 172, auxiliary electrode; 173, reference electrode;

[0038] 18. Water injection device; 19. Constant potential instrument; 20. Water level monitoring device; 21. Ultraviolet lamp;

[0039] 100. Test piece. DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] like Figure 1-Figure 9 As shown, this embodiment provides a corrosion test system, for example, for simulating corrosion tests in extremely low marine environments. The corrosion test system includes a support frame 11, a box 12, a corrosion plate 13, a water supply and drainage device 14, a water storage device 15, a fixing assembly 16, an electrode group 17, a water injection device 18, a constant potentiostat 19 and a controller. The box 12 and the corrosion plate 13 are both arranged on the support frame 11, the corrosion plate 13 is located in the box 12, and the water supply and drainage device 14 is used for water intake and drainage of the box 12. The water storage device 15, the fixing assembly 16, the electrode group 17 and the water injection device 18 are all arranged on the corrosion plate 13. The water storage device 15 has a first working position and a second working position and can be switched between the first working position and the second working position. The fixing assembly 16 is used to fix the test piece 100, and the water injection device 18 is used to inject water into the water storage device 15. When the water storage device 15 is in the second working position, the test piece 100 and the electrode group 17 are at least partially located below the current highest liquid level of the water storage device 15. When the water storage device 15 is in the first working position, the test piece 100 and the electrode group 17 are located above the current highest liquid level of the water storage device 15. The constant potential meter 19 is electrically connected to the electrode group 17, and specifically, the electrode group 17 is electrically connected to the constant potential meter 19 through a line. The water supply and drainage device 14, the water storage device 15 and the water injection device 18 are all connected to the controller for communication. Those skilled in the art can understand that the water storage device 15 has different maximum liquid levels when it is in the first working position and when it is in the second working position, and the maximum liquid level when the water storage device 15 is in the second working position is higher than the maximum liquid level when the water storage device 15 is in the first working position.

[0045] The corrosion test system provided in this embodiment injects water into the box 12 through the water supply and drainage device 14, so that the box 12 contains a certain amount of water, and simulates the marine environment in the box 12 to test the corrosion of the test piece 100 in this environment. During the test, the water storage device 15 can be controlled to move from the first working position to the second working position as needed, and a certain amount of water can be injected into the water storage device 15 through the water injection device 18, so that the test piece 100 and the electrode group 17 are in contact with the water in the water storage device 15, and the corrosion degree is measured. After the measurement is completed, the water storage device 15 is controlled to move from the second working position to the first working position, at which time the test piece 100 is out of contact with the water in the water storage device 15, and the corrosion process of the test piece 100 is continued to be simulated. In the corrosion test system provided in this embodiment, the corrosion process of the test piece 100 and the corrosion degree measurement process are automatically carried out in the box 12, the test efficiency is high, and it is convenient to control the corrosion environment during the entire experiment.

[0046] The electrode group 17 in this embodiment has a reference electrode 173, a working electrode 171 and an auxiliary electrode 172, and the reference electrode 173, the working electrode 171 and the auxiliary electrode 172 are all electrically connected to the constant potential instrument 19. After the water storage device 15 is in the second working position and the water injection device 18 injects water into the water storage device 15, the reference electrode 173, the working electrode 171 and the auxiliary electrode 172 are all in contact with the water in the water storage device 15, and the electrode group 17 conducts the corrosion electrical signal to the constant potential instrument 19 through the line, and the corrosion rate of the test piece 100 is measured by the corrosion potential difference. In this embodiment, the reference electrode 173 is a saturated calomel electrode, and the auxiliary electrode 172 is a platinum sheet. The further principle of performing material corrosion testing by cooperating with the constant potential instrument 19, the reference electrode 173, the working electrode 171 and the auxiliary electrode 172 is common knowledge in the art and will not be repeated here.

[0047] Optionally, the corrosion test system provided in this embodiment further includes a first driving device, which is disposed on the support frame 11, and is used to drive the corrosion plate 13 to rotate relative to the box 12 around a first axis, the first axis extending in the horizontal direction, and the first driving device is communicatively connected to the controller. During the test, the water level in the box 12 can be made higher than the bottom end of the corrosion plate 13 in a vertical state, and the corrosion plate 13 is driven to rotate around a first axis parallel to the horizontal direction by the first driving device, so that the corrosion plate 13 drives the water in the box 12 to surge, simulating the effect of splashing waves, so as to simulate the corrosion of the test piece 100 under the waves.

[0048] Alternatively, if Figure 3 , Figure 6 , Figure 7 and Figure 8As shown, the water storage device 15 includes a shell 151 and a second drive device 152. The second drive device 152 is disposed on the corrosion plate 13 and connected to the shell 151. The second drive device 152 is used to drive the shell 151 to switch between a first working position and a second working position relative to the water storage device 15. The second drive device 152 is communicatively connected to the controller, and the controller controls the water storage device 15 to switch between the first working position and the second working position. In this embodiment, the second drive device 152 is disposed at both ends of the shell 151 in the length direction, and the shell 151 and the second drive device 152 are surrounded to form a water storage cavity.

[0049] Furthermore, if Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, the second driving device 152 can drive the housing 151 to rotate relative to the corrosion plate 13, so that the water storage device 15 switches between the first working position and the second working position. The rotation axis between the housing 151 and the corrosion plate 13 is parallel to the first axis, which is also parallel to the horizontal direction. The maximum liquid level of the water storage device 15 is changed by the rotation of the water storage device 15 relative to the corrosion plate 13. In this embodiment, the second driving device 152 is a small waterproof roller motor.

[0050] Alternatively, if Figure 2 , Figure 3 and Figure 7 As shown, a plurality of water storage devices 15 are provided, and the fixing components 16, the electrode groups 17 and the water injection devices 18 are all provided in one-to-one correspondence with the water storage devices 15, and the plurality of water storage devices 15 are arranged at intervals in a direction perpendicular to the first axis. When the corrosion plate 13 is in a vertical state, the plurality of water storage devices 15 are arranged at intervals in the vertical direction, that is, the test pieces 100 fixed on the fixing components 16 corresponding to the water storage devices 15 are also arranged at intervals in the vertical direction. During the corrosion test, the water level in the box 12 can be controlled according to the test needs, and the corrosion plate 13 can be driven to rotate around the first axis by the first driving device, so that some of the plurality of test pieces 100 on the corrosion plate 13 are completely immersed, some of the test pieces 100 are alternately wet and dry, and some are completely exposed to the air, so that three different corrosion conditions can be tested in one test, thereby improving the test efficiency.

[0051] In this embodiment, if Figure 2-Figure 4As shown, the fixing assembly 16 includes a plurality of fixing members 161 arranged at intervals in a direction parallel to the first axis, and the test piece 100 is fixed on the fixing member 161, and each fixing member 161 can fix one test piece 100. That is to say, in the corrosion test, a plurality of test pieces 100 can be correspondingly arranged for each water storage device 15. After the water storage device 15 corresponding to the fixing assembly 16 is located at the second working position and filled with water, the plurality of test pieces 100 fixed on the fixing assembly 16 are in contact with the water in the water storage device 15. The specific structure of the fixing member 161 can be set as needed, as long as the test piece 100 can be fixed and disassembled.

[0052] Alternatively, if Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, an opening 153 extending along the first direction is provided on the top of the water storage device 15, and a mounting portion 131 corresponding to the water storage device 15 is provided on the corrosion plate 13, and the fixing assembly 16 is provided on the corresponding mounting portion 131. When the water storage device 15 is located in the second working position, the mounting portion 131 extends into the corresponding water storage device 15 through the opening 153, so that the water storage device 15 is in the second working position and after the water injection device 18 injects water into the water storage device 15, the test piece 100 and the electrode group 17 on the corrosion plate 13 can contact the water in the water storage device 15.

[0053] Furthermore, if Figure 2-Figure 5 As shown, the corrosion plate 13 is provided with mounting holes 132 corresponding to the water storage devices 15, and the water storage devices 15 are arranged in the corresponding mounting holes 132. The top end of the mounting portion 131 is fixed on the top wall of the corresponding mounting hole 132, and the bottom end extends into the corresponding mounting hole 132. When the water storage device 15 is in the second working position, the water storage device 15 is in a horizontal position, and when the water storage device 15 is in the first working position, the water storage device 15 is in an inclined state.

[0054] Alternatively, if Figure 1 and Figure 2 As shown, the support frame 11 includes a base 112 and a support arm group 111, the support arm group 111 includes two support arms 1111 arranged opposite to each other, the two support arms 1111 are fixedly arranged on the base 112, the two ends of the corrosion plate 13 along the first direction are respectively rotatably connected to the two support arms 1111, and the two ends of the box body 12 along the first direction are respectively fixedly connected to the two support arms 1111. The rotational connection mode between the corrosion plate 13 and the support arm 1111 and the mode in which the first driving device is arranged in the support arm 1111 to drive the corrosion plate 13 to rotate relative to the support arm 1111 are conventional technical means in the art and will not be described in detail here.

[0055] Alternatively, if Figure 1As shown, the corrosion test system provided in this embodiment further includes a water level monitoring device 20 disposed on the box body 12, and the water level monitoring device 20 is used to monitor the water level in the box body 12 to ensure that the water level in the box body 12 meets the test requirements.

[0056] Alternatively, if Figure 1 As shown, the corrosion test system provided in this embodiment further includes an ultraviolet lamp 21, which is arranged on the box 12 and is used to irradiate ultraviolet rays into the box 12. Since the polar regions are covered with ice, the ultraviolet rays are reflected strongly, so the corrosion test system in this embodiment is provided with an ultraviolet lamp to simulate the effect of ultraviolet rays on corrosion in polar ocean regions.

[0057] Alternatively, if Figure 1 As shown, a box cover 121 is rotatably provided on the top of the box body 12, and a handle 123 is fixedly provided on the box cover 121. An observation window 122 is also provided on the box body 12, and a window plate for covering the observation window 122 is slidably provided at the observation window 122. In this embodiment, the observation window 122 is provided on the box cover 121.

[0058] Alternatively, if Figure 1 As shown, the water supply and drainage device 14 includes a water inlet pipe 142, a drain pipe 143 and a water pump 141. The water pump 141 is arranged on the water inlet pipe 142. The water inlet pipe 142 and the drain pipe 143 are both connected to the inner cavity of the box body 12. The water pump 141 cooperates with the water inlet pipe 142 to bring water into the box body 12, and the drain pipe 143 is used for draining water from the box body 12.

[0059] The corrosion test process of the corrosion test system provided in this embodiment is as follows:

[0060] Open the box cover 121 and place the test piece 100. Specifically, hold the handle 123 of the box body 12, open the box cover 121, and place the test piece 100 to be tested on the fixing member 161. Close the box cover 121 and set the control program of the controller.

[0061] The controller controls the water pump 141 to inject water into the box 12 according to the control program, and the water level monitoring device 20 monitors the water level in the box 12. After the water level in the box 12 reaches the preset water level, the controller controls the water pump 141 to stop injecting water. According to the test program, the controller controls the corrosion plate 13 to swing around the first axis to simulate the wave effect and controls the ultraviolet lamp 21 to irradiate ultraviolet rays into the box 12 to simulate the ultraviolet environment of the polar ocean, etc., so as to control the corrosion environment; controls the switching of the water storage device 15 between the first working position and the second working position and the water injection device 18 to inject water into the water storage device 15, etc., so as to make the test piece 100 circulate in both dry and wet states to monitor the corrosion rate. It should be noted that the dry state is a state in which the specimen 100 is not in contact with the water in the water storage device 15, and this state is a normal corrosion state. The wet state is a state in which the specimen 100 is partially or completely immersed under the water surface in the water storage device 15, and this state is a corrosion degree measurement state. The corrosion degree of the specimen 100 is measured multiple times during the corrosion test to determine the corrosion rate of the specimen 100 in each stage of the corrosion test.

[0062] After the test is finished, the water supply and drainage device 14 drains the water in the box 12 .

[0063] The corrosion testing system provided in this embodiment can simulate the influence of sea waves and ultraviolet rays on the corrosion of the test piece 100. In addition, the corrosion process of the test piece 100 and the corrosion rate measurement process are automatically performed in the box 12, the test efficiency is high, and the test results are more reliable.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A corrosion test system, characterized in that: It comprises a support frame (11), a box (12), a corrosion plate (13), a water supply and drainage device (14), a water storage device (15), a fixing component (16), an electrode group (17), a water injection device (18), a constant potential instrument (19) and a controller; The box body (12) and the corrosion plate (13) are both arranged on a support frame (11), the corrosion plate (13) is located inside the box body (12), and the water supply and drainage device (14) is used for water intake and drainage of the box body (12); The water storage device (15), the fixing assembly (16), the electrode group (17) and the water injection device (18) are all arranged on the corrosion plate (13); the water storage device (15) has a first working position and a second working position and can be switched between the first working position and the second working position; the fixing assembly (16) is used to fix the test piece (100); the water injection device (18) is used to inject water into the water storage device (15); when the water storage device (15) is in the second working position, the test piece (100) and the electrode group (17) are at least partially located below the current highest liquid level of the water storage device (15); when the water storage device (15) is in the first working position, the test piece (100) and the electrode group (17) are located above the current highest liquid level of the water storage device (15); and the potentiostat (19) is electrically connected to the electrode group (17); The water supply and drainage device (14), the water storage device (15) and the water injection device (18) are all communicatively connected to the controller.

2. The corrosion testing system according to claim 1, characterized in that: It also includes a first driving device, which is arranged on the support frame (11) and is used to drive the corrosion plate (13) to rotate around a first axis relative to the box (12), the first axis extending in a horizontal direction, and the first driving device is communicatively connected to the controller.

3. The corrosion testing system according to claim 2, characterized in that: The water storage device (15) comprises a shell (151) and a second driving device (152), wherein the second driving device (152) is arranged on the corrosion plate (13) and connected to the shell (151), and the second driving device (152) is used to drive the shell (151) to switch between the first working position and the second working position relative to the water storage device (15), and the second driving device (152) is communicatively connected to the controller.

4. The corrosion testing system according to claim 3, characterized in that: The second driving device (152) is capable of driving the shell (151) to rotate relative to the corrosion plate (13) so that the water storage device (15) switches between the first working position and the second working position, and the rotation axis between the shell (151) and the corrosion plate (13) is parallel to the first axis.

5. The corrosion testing system according to claim 4, characterized in that: A plurality of the water storage devices (15) are provided, the fixing assembly (16), the electrode group (17) and the water injection device (18) are all provided in one-to-one correspondence with the water storage devices (15), and the plurality of water storage devices (15) are provided at intervals in a direction perpendicular to the first axis.

6. The corrosion testing system according to claim 5, characterized in that: The water storage device (15) is provided with an opening (153) extending in a first direction at the top, the corrosion plate (13) is provided with a mounting portion (131) corresponding to the water storage device (15) one by one, the fixing assembly (16) is arranged on the corresponding mounting portion (131), and when the water storage device (15) is located in the second working position, the mounting portion (131) passes through the opening (153) and extends into the corresponding water storage device (15).

7. The corrosion testing system according to claim 6, characterized in that: The corrosion plate (13) is provided with mounting holes (132) corresponding to the water storage devices (15) one by one. The water storage devices (15) are arranged in the corresponding mounting holes (132). The top end of the mounting portion (131) is fixed on the top wall of the corresponding mounting hole (132), and the bottom end extends into the corresponding mounting hole (132).

8. The corrosion testing system according to any one of claims 1 to 7, characterized in that: The support frame (11) comprises a base (112) and a support arm group (111); the support arm group (111) comprises two support arms (1111) arranged opposite to each other; the two support arms (1111) are fixedly arranged on the base (112); the two ends of the corrosion plate (13) along the first direction are rotatably connected to the two support arms (1111) respectively; and the two ends of the box body (12) along the first direction are fixedly connected to the two support arms (1111) respectively.

9. The corrosion testing system according to any one of claims 1 to 7, characterized in that: It also comprises a water level monitoring device (20) arranged on the box body (12), wherein the water level monitoring device (20) is used to monitor the water level in the box body (12).

10. The corrosion testing system according to any one of claims 1 to 7, characterized in that: It also comprises an ultraviolet lamp (21), which is arranged on the box (12) and is used to irradiate ultraviolet rays into the box (12).

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