Ocean simulation friction corrosion testing device for corrosion-resistant material

Abstract

The invention discloses an ocean simulation friction corrosion testing device for a corrosion-resistant material. The ocean simulation friction corrosion testing device comprises an experiment bin, a testing frame, a driving assembly, a liquid supply assembly, a salt mist supply assembly, a cooling assembly and a heating piece. According to the ocean simulation friction corrosion testing device for the corrosion-resistant material, the testing sample piece and the testing ball body which are in sliding friction with each other are installed through the experiment bin and the testing frame respectively, the liquid supply assembly introduces seawater into the experiment bin to simulate the sea wave scouring environment, and the salt mist supply assembly sprays salt mist out of the experiment bin to simulate the sea surface salt mist environment; the cooling assembly cools the interior of the experiment bin, the heating piece heats the interior of the experiment bin to simulate the condition of alternate cooling and heating of seawater, and the service performance and the service life of the tested friction pair in the simulated complex marine environment are comprehensively evaluated, so that material corrosion and wear resistance test data with small deviation from the actual service behavior are obtained.

Description

Technical Field

[0001] The invention relates to the technical field of material performance testing, and in particular to an ocean simulation friction corrosion testing device for corrosion-resistant materials. Background Art

[0002] With the rapid development of my country's marine equipment and cross-sea projects, metal materials serving in special sea areas such as tidal range zones and splash zones are facing technical challenges of marine corrosion, dry-wet alternating cycles, alternating temperatures and complex lubrication states. Traditional friction and wear testing machines (classification number G01N3 / 56) can only simulate a single environmental parameter and cannot reproduce the real working conditions of multi-physical field coupling such as Cl⁻ ion corrosion, dry-wet cyclic oxidation, and lubrication state transients, resulting in significant deviations between the material corrosion and wear resistance test data and the actual service behavior. Especially for key materials such as marine alloys and bridge steel piles, existing equipment cannot fully simulate the complex marine environment of marine corrosion, dry-wet alternation, and high and low temperature alternating coupling, which restricts the research on the corrosion-wear interaction mechanism of marine engineering materials.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a marine simulated friction corrosion testing device for corrosion-resistant materials, aiming to solve the technical problem that the prior art cannot fully simulate the complex marine environment of marine corrosion, alternating dry and wet, and alternating high and low temperatures, resulting in significant deviations between the material corrosion and wear resistance test data and the actual service behavior.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A marine simulated friction corrosion testing device for corrosion-resistant materials, comprising: The experimental chamber is provided with a turntable, a heating rack, a thrust bearing, a sample fixture and a water level sensor. The turntable is rotatably mounted on the inner bottom wall of the experimental chamber via the thrust bearing, the heating rack is fixedly arranged on the inner bottom wall of the experimental chamber around the turntable, the sample fixture is installed on the turntable and used to clamp the test sample, and the water level sensor is arranged on the outer wall of the experimental chamber and used to detect the water level height in the experimental chamber; A driving assembly, including a motor, the motor is used to drive the turntable to rotate; A test frame is equipped with a test sphere and a mechanical sensor. The test sphere is suspended in the experimental chamber and is in frictional contact with the test sample on the sample fixture. The mechanical sensor is used to collect the friction force of the test sphere when dynamic friction occurs; The liquid supply component includes a water supply pipe and a water return pipe, the water supply pipe and the water return pipe are respectively connected to the experimental chamber, the water supply pipe is used to transport the liquid into the experimental chamber, and the water return pipe is used to output and recover the liquid in the experimental chamber. The liquid supply component cooperates with the water level sensor to adjust the liquid water level change in the experimental chamber; The salt mist supply assembly includes a nozzle, which is arranged on the top of the experimental chamber and is used to spray salt mist into the experimental chamber; A heating element, which is installed on a heating rack in the experimental chamber and is used to heat the seawater in the experimental chamber; The cooling assembly includes a cooling pipe, which is suspended above the turntable and surrounds the test sphere and is used to cool the seawater in the experimental chamber.

[0006] The marine simulated friction corrosion testing device for corrosion-resistant materials, wherein, also includes a base plate, the base plate is used to install an integrated experimental chamber, a test frame, a liquid supply assembly, a salt spray supply assembly and a cooling assembly, a first bracket, a second bracket and a third bracket are arranged on the base plate, the experimental chamber is installed on the first bracket, the salt spray supply assembly is installed on the second bracket, and the cooling assembly is installed on the third bracket.

[0007] The marine simulated friction corrosion test device for corrosion-resistant materials is described, wherein the experimental chamber is also provided with a sealing cover, the sealing cover is screwed to the bottom of the experimental chamber, the bottom of the turntable passes through the sealing cover, and a sealing member is provided between the sealing cover and the turntable.

[0008] The marine simulated friction corrosion testing device for corrosion-resistant materials, wherein the driving assembly also includes a limit shaft, the limit shaft is threadedly connected to the lower end of the turntable and is located below the sealing cover, a limit pin is arranged between the limit shaft and the turntable, and the motor drives the limit shaft.

[0009] The marine simulated friction corrosion test device for corrosion-resistant materials, wherein the test frame also includes a support arm, a ball clamp and a weight, the mechanical sensor is tightly attached to one end of the support arm, the ball clamp is installed at the other end of the support arm and is used to clamp the test ball, and the weight is sleeved on the upper end of the ball clamp.

[0010] The marine simulated friction corrosion test device for corrosion-resistant materials, wherein the liquid supply component includes a liquid storage tank, a water supply pump and a return water pump, the water supply pipe is connected to the liquid storage tank via the water supply pump, the return water pipe is connected to the liquid storage tank via the return water pump, the water supply pump is used to pump liquid from the liquid storage tank into the water supply pipe to supply liquid to the experimental chamber, and the return water pipe is used to recover the liquid in the experimental chamber to the liquid storage tank through the return water pipe.

[0011] The marine simulated friction corrosion test device for corrosion-resistant materials, wherein the salt spray supply assembly also includes a brine tank, a salt spray pump and a salt spray pipe, the brine tank is installed on the second bracket, the salt spray pump is installed on the top of the brine tank and is respectively connected to the brine tank and the salt spray pipe, the salt spray pipe is connected to the nozzle, and the salt spray pump is used to pump the brine in the brine tank into the salt spray pipe in a mist form.

[0012] The marine simulated friction corrosion testing device for corrosion-resistant materials, wherein the cooling assembly includes a coolant tank and an infusion pump, the coolant tank is installed on the third bracket, and the infusion pump is installed on the coolant tank and connected to the cooling pipeline.

[0013] The marine simulated friction corrosion testing device for corrosion-resistant materials, wherein the experimental chamber is also provided with a top cover, which is detachably mounted on the top of the experimental chamber, and is provided with three through holes for cooling pipes, spherical fixtures and nozzles to enter the experimental chamber.

[0014] The marine simulated friction corrosion testing device for corrosion-resistant materials is characterized in that a mounting hole for mounting a ball clamp is provided at one end of the support arm, and a locking piece for resisting and locking the ball clamp is provided on a hole wall on one side of the mounting hole.

[0015] Beneficial effects: The present invention provides a marine simulation friction corrosion test device for corrosion-resistant materials, comprising an experimental chamber, a test frame, a driving component, a liquid supply component, a salt spray supply component, a cooling component and a heating element. The marine simulation friction corrosion test device for corrosion-resistant materials is provided with an experimental chamber and a test frame, respectively installing a test sample and a test sphere that rub against each other, the liquid supply component passes seawater into the experimental chamber to simulate the environment of wave scouring, the salt spray supply component sprays salt spray into the experimental chamber to simulate the salt spray environment of the sea surface, the cooling component cools down the experimental chamber, and the heating element heats the experimental chamber to simulate the alternating cold and hot conditions of seawater, and comprehensively simulates the complex marine environment to carry out performance testing of the material, so as to obtain material corrosion and wear resistance performance test data with small deviation from actual service behavior. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of the marine simulated friction corrosion testing device for corrosion-resistant materials provided by the present invention; Figure 2 A schematic diagram of the cross-section structure of the experimental chamber and the test stand provided by the present invention; Figure 3 A schematic diagram of the three-dimensional structure of the experimental chamber provided by the present invention; Figure 4 The present invention provides Figure 2 Schematic diagram of the local structure of A; Figure 5This is a schematic diagram of the three-dimensional structure of the experimental chamber, test rack, cooling assembly and salt spray supply assembly provided by the present invention.

[0017] Reference numerals: 1—experimental chamber, 2—driving assembly, 3—test stand, 4—liquid supply assembly, 5—salt spray supply assembly, 6—heating element, 7—cooling assembly, 8—bottom plate, 9—controller, 11—turntable, 12—heating stand, 13—thrust bearing, 14—sample fixture, 15—water level sensor, 16—sealing cover, 17—sealing element, 18—top cover, 19—through hole, 21—motor, 22—limiting shaft, 23—limiting pin, 31—test sphere, 32—mechanical sensor, 33—support arm, 34—sphere fixture, 35—weight, 36—mounting hole, 37—locking piece, 41—water pipe, 42—return pipe, 43—liquid storage tank, 44—water pump, 45—return water pump, 51—nozzle, 52—brine tank, 53—salt spray pump, 54—salt spray pipe, 71—cooling pipe, 72—coolant tank, 73—infusion pump, 81—first bracket, 82—second bracket, 83—third bracket, 84—fourth bracket. DETAILED DESCRIPTION

[0018] The present invention provides a marine simulated friction corrosion test device for corrosion-resistant materials. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. 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 a limitation of 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.

[0020] See also Figures 1 to 5 As shown, the present invention provides a marine simulated friction corrosion test device for corrosion-resistant materials, which includes: The experimental chamber 1 is provided with a turntable 11, a heating frame 12, a thrust bearing 13, a sample clamp 14 and a water level sensor 15. The turntable 11 is rotatably mounted on the inner bottom wall of the experimental chamber 1 via the thrust bearing 13. The heating frame 12 is fixedly arranged on the inner bottom wall of the experimental chamber 1 around the turntable 11. The sample clamp 14 is installed on the turntable 11 and is used to clamp the test sample. The water level sensor 15 is arranged on the outer wall of the experimental chamber 1 and is used to detect the water level height in the experimental chamber 1. In this embodiment, the experimental chamber 1 is in the shape of a barrel. A through hole 19 is provided on the bottom wall of the experimental chamber 1 to rotatably mount the turntable 11. The water level sensor 15 is an existing conventional technology. The thrust bearing 13 can reduce the friction between the turntable 11 and the experimental chamber 1 when it rotates. The heating frame 12 is double-layered. An arc-shaped structure surrounds the outer side of the turntable 11, and the heating rack 12 is provided with a plurality of liquid holes, which are used to allow liquid to pass through and contact the test sample clamped by the sample clamp 14 on the turntable 11. The height of the heating rack 12 is greater than the top surface height of the sample clamp 14, and the sample clamp 14 is installed on the turntable 11 via screws. The sample clamp 14 is annular, and a clamping groove for clamping the test sample is radially provided on its inner side, and the clamping groove is also locked by screws to clamp the test sample; there are two water level sensors 15, and the position heights of the two water level sensors 15 are respectively greater than and less than the position height of the sample clamp 14, and the two water level sensors 15 are used to detect the water level in the experimental chamber 1 to ensure that the test sample is completely immersed in seawater during the lubrication test.

[0021] See also Figure 1 to Figure 2 As shown, the driving assembly 2 includes a motor 21, which is used to drive the turntable 11 to rotate; the driving assembly 2 also includes a limit shaft 22, which is screwed to the lower end of the turntable 11 and is located below the sealing cover 16, and a limit pin 23 is set between the limit shaft 22 and the turntable 11, and the motor 21 drives the limit shaft 22. In this embodiment, the driving assembly 2 is installed below the experimental chamber 1 to facilitate the drive connection of the turntable 11. The screw connection between the limit shaft 22 and the turntable 11 is that the limit shaft 22 is provided with an internal thread and the turntable 11 is provided with an external thread, and the limit pin 23 runs through one side of the limit shaft 22 and the bottom of the turntable 11. The motor 21 drives the limit shaft 22 to rotate, and the limit shaft 22 drives the turntable 11 to rotate through the threaded connection and the limit pin 23, so that the turntable 11 drives the test sample clamped by the sample clamp 14 to rotate, and the test sample contacts and the test sphere 31 to generate friction. Since the limit shaft 22 may be easily loosened from the turntable 11 due to the rotation direction when rotating, the limit pin 23 is provided to prevent the limit shaft 22 from loosening from the turntable 11 and affecting the rotation transmission, thereby improving the rotation stability.

[0022] See also Figure 1 , Figure 2 , Figure 4As shown, the test stand 3 is equipped with a test ball 31 and a mechanical sensor 32. The test ball 31 is suspended in the experimental chamber 1 and is in frictional contact with the test sample on the sample fixture 14. The mechanical sensor 32 is used to collect the friction force on the test ball 31 when dynamic friction occurs. The test stand 3 also includes a support arm 33, a ball fixture 34 and a weight 35. The mechanical sensor 32 is tightly attached to one end of the support arm 33. The ball fixture 34 is installed at the other end of the support arm 33 and is used to clamp the test ball 31. The weight 35 is sleeved on the upper end of the ball fixture 34. In this embodiment, the ball fixture 34 includes a mounting tube and a limit bolt. The test ball 31 is arranged in the mounting tube. The bottom of the mounting tube has a limit hole so that the test ball 31 partially protrudes out of the limit hole and contacts the test sample. The limit bolt is screwed into the mounting tube from top to bottom and is used to resist the test ball 31 to prevent the test ball 31 from moving. One end of the support arm 33 extends above the experimental chamber 1, and is provided with a mounting hole 36 for installing the ball fixture 34, and a locking member 37 for resisting and locking the ball fixture 34 is provided on one side of the hole wall of the mounting hole 36. The test sphere 31 extends from top to bottom into the experimental chamber 1 through the cooperation of the ball fixture 34 and the support arm 33, and does not contact any part of the experimental chamber 1. The mechanical sensor 32 is an existing conventional technology. The mechanical sensor 32 detects the friction force of the test sphere 31 when it rubs against the test sample in various environments simulated in the experimental chamber 1, thereby calculating the corresponding friction coefficient. The test sphere 31 and the ball fixture 34 of different diameters can be changed according to the test requirements, and the friction state of the test sphere 31 under different loads can be achieved by adjusting the weight of the weight 35.

[0023] See also Figure 1As shown, the liquid supply component 4 includes a water supply pipe 41 and a return pipe 42, the water supply pipe 41 and the return pipe 42 are respectively connected to the experimental chamber 1, the water supply pipe 41 is used to transport liquid to the experimental chamber 1, and the return pipe 42 is used to output and recover the liquid in the experimental chamber 1, and the liquid supply component 4 cooperates with the water level sensor 15 to adjust the liquid level change in the experimental chamber 1; the liquid supply component 4 includes a liquid storage tank 43, a water supply pump 44 and a return pump 45, the water supply pipe 41 is connected to the liquid storage tank 43 via the water supply pump 44, the return pipe 42 is connected to the liquid storage tank 43 via the return pump 45, the water supply pump 44 is used to pump liquid from the liquid storage tank 43 into the water supply pipe 41 to supply water to the experimental chamber 1, and the return pipe 42 is used to recover the liquid in the experimental chamber 1 to the liquid storage tank 43 through the return pipe 42. In this embodiment, the liquid is seawater, the purpose is to simulate the friction corrosion of corrosion-resistant materials in the seawater environment. The water pipe 41, the water pump 44, the liquid storage tank 43, the return pump 45, the return pipe 42 and the experimental chamber 1 are connected in sequence to form a closed loop, so as to realize the recycling of seawater and create a flowing water state in the experimental chamber 1 to simulate the wave environment. When the two water level sensors 15 detect that there is water in the experimental chamber 1 at the same time, it is a completely immersed state test environment; when the two water level sensors 15 do not detect that there is water in the experimental chamber 1 at the same time, it is a waterless test environment; when the lower water level sensor 15 detects that there is water in the experimental chamber 1 and the upper water level sensor 15 does not detect that there is water in the experimental chamber 1, it is an incompletely immersed state (simulated floating state) test environment. The two water level sensors 15 cooperate with the liquid supply component 4 to simulate the experimental chamber 1 to form a dry and wet alternating, tidal marine environment, so that the test environment is closer to reality and the test data obtained is more accurate.

[0024] In some other embodiments, the seawater in the liquid storage tank can be replaced with lubricating oil to test the friction and wear performance of the friction pair (such as a combination of a test sphere and a test sample) under different lubrication conditions. The friction and wear performance of the friction pair under dry friction, boundary lubrication and sufficient lubrication (including fluid dynamic lubrication and liquid static lubrication) conditions can be tested. The water level sensor 15 provided outside the experimental chamber 1 is used to detect the inside of the experimental chamber 1: 1) When there is no liquid, the friction performance of the friction pair under dry friction conditions at room temperature can be tested; 2) When the liquid penetrates the test sample and only forms an extremely thin oil film, it is the critical state before the transition to dry friction, and the friction performance of the friction pair under boundary lubrication conditions at room temperature can be tested; 3) When the liquid penetrates the test sphere, the friction performance of the friction pair under sufficient lubrication conditions at room temperature can be tested.

[0025] See also Figure 1 , Figure 5As shown, the salt spray supply assembly 5 includes a nozzle 51, which is arranged on the top of the experimental chamber 1 and is used to spray salt spray into the experimental chamber 1; the salt spray supply assembly 5 also includes a salt water tank 52, a salt spray pump 53 and a salt spray pipe 54, the salt water tank 52 is installed on the second bracket 82, the salt spray pump 53 is installed on the top of the salt water tank 52 and is respectively connected to the salt water tank 52 and the salt spray pipe 54, the salt spray pipe 54 is connected to the nozzle 51, and the salt spray pump 53 is used to pump the salt water in the salt water tank 52 into the salt spray pipe 54 in the form of mist. In this embodiment, the salt water tank 52 is filled with salt water or sea water, and the salt spray pump 53 preferably adopts a micro spray pump, and the salt spray pump 53 converts the sea water or salt water in the salt water tank 52 into a spray, which is sprayed into the experimental chamber through the nozzle 51 to contact with the test sphere 31 and the test sample, simulating the salt spray environment on the sea surface.

[0026] See also Figure 3 As shown, the heating element 6 is installed on the heating rack 12 in the experimental chamber 1 and is used to heat the seawater in the experimental chamber 1; in this embodiment, the heating element 6 is a heating wire, and a small hole is provided on the side wall of the experimental chamber 1. The small hole is located above the water level sensor 15 and is used for the heating wire to enter the experimental chamber 1. The heating wire is wound and installed in the gap of the heating rack 12 to heat the seawater in the experimental chamber 1, simulating the influence of the rising water temperature in the ocean on the test sphere 31 and the test sample. The tribological performance of the friction pair under the conditions of high temperature poor oil, high temperature lack of oil, and high temperature sufficient lubrication can be achieved through the heating element 6 provided in the experimental chamber 1.

[0027] See also Figure 1 , Figure 5 As shown, the cooling assembly 7 includes a cooling pipe 71, which is suspended above the turntable 11 and surrounds the test sphere 31, and is used to cool the seawater in the experimental chamber 1. The cooling assembly 7 includes a coolant tank 72 and an infusion pump 73. The coolant tank 72 is installed on the third bracket 83, and the infusion pump 73 is installed on the coolant tank 72 and connected to the cooling pipe 71. In this embodiment, the coolant tank 72 is filled with a liquid cooling medium, such as liquid nitrogen. One end of the cooling pipe 71 is located at the upper layer of the coolant tank 72, and the other end of the cooling pipe 71 is located at the lower layer of the coolant tank 72. The infusion pump 73 pumps the liquid cooling medium into the cooling pipe 71 to circulate, thereby cooling the seawater in the experimental chamber 1 to simulate the influence of the cold seawater environment on the test sphere 31 and the test sample.

[0028] See also Figure 1As shown, it also includes a bottom plate 8, which is used to install the integrated experimental chamber 1, the test frame 3, the liquid supply component 4, the salt spray supply component 5 and the cooling component 7. The bottom plate 8 is provided with a first bracket 81, a second bracket 82 and a third bracket 83. The experimental chamber 1 is installed on the first bracket 81, the salt spray supply component 5 is installed on the second bracket 82, and the cooling component 7 is installed on the third bracket 83. In this embodiment, with the experimental chamber 1 as a reference, the liquid supply component 4 is located in front of the experimental chamber 1, the cooling component 7 is located on the right side of the experimental chamber 1, the salt spray supply component 5 is located on the left side of the experimental chamber 1, the test frame 3 is located at the rear of the experimental chamber 1, and the bottom plate 8 is a rectangular plate so that the test device can be installed as a whole on the external plane for testing.

[0029] See also Figure 2 As shown, the experimental chamber 1 is also provided with a sealing cover 16, which is screwed to the bottom of the experimental chamber 1, and the bottom of the turntable 11 passes through the sealing cover 16, and a sealing member 17 is provided between the sealing cover 16 and the turntable 11. In this embodiment, the sealing member 17 is preferably lubricating sealing grease, and the sealing cover 16 is provided to seal the bottom of the experimental chamber 1 to prevent seawater from leaking from the bottom and dripping onto the motor 21, thereby corroding the motor 21 and affecting the normal operation of the motor 21, and the sealing member 17 can be provided without affecting the smooth rotation of the turntable 11 while sealing.

[0030] See also Figures 1 to 3 As shown, the experimental chamber 1 is also provided with a top cover 18, which is detachably mounted on the top of the experimental chamber 1, and is provided with three through holes 19 for the cooling pipe 71, the ball fixture 34 and the nozzle 51 to enter the experimental chamber 1. In this embodiment, the top cover 18 is composed of two detachable semicircular covers, and the three through holes 19 are all located at the connection of the two semicircular covers, which is convenient for the installation of the cooling pipe 71, the ball fixture 34 and the nozzle 51. The provision of the top cover 18 is conducive to preventing foreign debris from falling into the experimental chamber 1 and thus affecting the normal conduct of the test, and also preventing the centrifugal force generated when the turntable 11 rotates from causing the seawater in the experimental chamber 1 to splash out of the experimental chamber 1.

[0031] In this embodiment, a controller 9 is also included. The controller 9 is a single chip microcomputer or a PLC. The controller is installed on the top of the liquid storage tank 43 via the fourth bracket 84. The controller 9 is electrically connected to the water supply pump 41, the return water pump 45, the infusion pump 73, the heating element 6 and the salt spray pump 53 to control the start and stop of the water supply pump 41, the return water pump 45, the infusion pump 73, the heating element 6 and the salt spray pump 53 respectively, so as to simulate the complex marine environment.

[0032] In summary, the present invention sets an experimental chamber 1 and a test frame 3 to respectively install a test sample and a test sphere 31 that rub against each other, the liquid supply component 4 allows seawater to enter the experimental chamber 1 to simulate the environment of wave scouring, the salt spray supply component 5 sprays salt spray to the experimental chamber 1 to simulate the salt spray environment on the sea surface, the cooling component 7 cools down the experimental chamber 1, and the heating component 6 heats the experimental chamber 1 to simulate the alternation of hot and cold seawater, and comprehensively simulates the complex marine environment to carry out performance testing of the material, so as to obtain corrosion and wear resistance test data of the material with small deviation from the actual service behavior.

[0033] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A marine simulated friction corrosion test device for corrosion-resistant materials, characterized in that: include: An experimental chamber (1) is provided with a turntable (11), a heating rack (12), a thrust bearing (13), a sample clamp (14) and a water level sensor (15); the turntable (11) is rotatably mounted on the inner bottom wall of the experimental chamber (1) via the thrust bearing (13); the heating rack (12) is fixedly mounted on the inner bottom wall of the experimental chamber (1) around the turntable (11); the sample clamp (14) is mounted on the turntable (11) and is used to clamp the test sample; and the water level sensor (15) is arranged on the outer wall of the experimental chamber (1) and is used to detect the water level in the experimental chamber (1); A driving assembly (2) comprising a motor (21), wherein the motor (21) is used to drive the turntable (11) to rotate; A test frame (3) is installed with a test sphere (31) and a mechanical sensor (32); the test sphere (31) is suspended in the experimental chamber (1) and is in frictional contact with the test sample on the sample fixture (14); the mechanical sensor (32) is used to collect the friction force exerted on the test sphere (31) when dynamic friction occurs; The liquid supply assembly (4) comprises a water supply pipe (41) and a water return pipe (42), wherein the water supply pipe (41) and the water return pipe (42) are respectively connected to the experimental chamber (1), the water supply pipe (41) is used to transport liquid into the experimental chamber (1), and the water return pipe (42) is used to output and recover the liquid in the experimental chamber (1), and the liquid supply assembly (4) cooperates with the water level sensor (15) to adjust the change of the liquid level in the experimental chamber (1); A salt mist supply assembly (5) comprising a nozzle (51), wherein the nozzle (51) is arranged on the top of the experimental chamber (1) and is used to spray salt mist into the experimental chamber (1); A heating element (6), the heating element (6) being mounted on a heating rack (12) in the experimental chamber (1) and used to heat the seawater in the experimental chamber (1); The cooling assembly (7) comprises a cooling pipe (71), wherein the cooling pipe (71) is suspended above the turntable (11) and surrounds the test sphere (31), and is used to cool the seawater in the test chamber (1).

2. The marine simulated friction corrosion testing device for corrosion-resistant materials according to claim 1, characterized in that: The invention also comprises a bottom plate (8), the bottom plate (8) being used for installing the integrated experimental chamber (1), the test frame (3), the liquid supply assembly (4), the salt spray supply assembly (5) and the cooling assembly (7), a first bracket (81), a second bracket (82) and a third bracket (83) being arranged on the bottom plate (8), the experimental chamber (1) being installed on the first bracket (81), the salt spray supply assembly (5) being installed on the second bracket (82), and the cooling assembly (7) being installed on the third bracket (83).

3. The marine simulated friction corrosion testing device for corrosion-resistant materials according to claim 2, characterized in that: The experimental chamber (1) is further provided with a sealing cover (16), the sealing cover (16) being screwed to the bottom of the experimental chamber (1), the bottom of the rotating disk (11) passing through the sealing cover (16), and a sealing member (17) being provided between the sealing cover (16) and the rotating disk (11).

4. The marine simulated friction corrosion testing device for corrosion-resistant materials according to claim 3, characterized in that: The driving assembly (2) further comprises a limit shaft (22), the limit shaft (22) being screwed to the lower end of the rotating disk (11) and being located below the sealing cover (16), a limit pin (23) being arranged between the limit shaft (22) and the rotating disk (11), and the motor (21) being driven and connected to the limit shaft (22).

5. The marine simulated friction corrosion testing device for corrosion-resistant materials according to claim 2, characterized in that: The test frame (3) further comprises a support arm (33), a ball clamp (34) and a weight (35); the mechanical sensor (32) is closely attached to one end of the support arm (33); the ball clamp (34) is mounted on the other end of the support arm (33) and is used to clamp the test ball (31); and the weight (35) is sleeved on the upper end of the ball clamp (34).

6. The marine simulated friction corrosion testing device for corrosion-resistant materials according to claim 2, characterized in that: The liquid supply assembly (4) comprises a liquid storage tank (43), a water delivery pump (44) and a water return pump (45); the water delivery pipe (41) is connected to the liquid storage tank (43) via the water delivery pump (44); the water return pipe (42) is connected to the liquid storage tank (43) via the water return pump (45); the water delivery pump (44) is used to pump liquid from the liquid storage tank (43) into the water delivery pipe (41) to supply liquid to the experimental chamber (1); and the water return pipe (42) is used to recover the liquid in the experimental chamber (1) to the liquid storage tank (43) via the water return pipe (42).

7. The marine simulated friction corrosion testing device for corrosion-resistant materials according to claim 2, characterized in that: The salt spray supply assembly (5) further comprises a salt water tank (52), a salt spray pump (53) and a salt spray pipe (54). The salt water tank (52) is mounted on a second bracket (82). The salt spray pump (53) is mounted on the top of the salt water tank (52) and is respectively connected to the salt water tank (52) and the salt spray pipe (54). The salt spray pipe (54) is connected to the nozzle (51). The salt spray pump (53) is used to pump the salt water in the salt water tank (52) into the salt spray pipe (54) in the form of mist.

8. The marine simulated friction corrosion testing device for corrosion-resistant materials according to claim 2, characterized in that: The cooling assembly (7) comprises a cooling liquid tank (72) and an infusion pump (73); the cooling liquid tank (72) is mounted on the third bracket (83); the infusion pump (73) is mounted on the cooling liquid tank (72) and is connected to the cooling pipeline (71).

9. The marine simulated friction corrosion testing device for corrosion-resistant materials according to claim 3 or 5, characterized in that: The experimental chamber (1) is also provided with a top cover (18), which is detachably mounted on the top of the experimental chamber (1), and the top cover (18) is provided with three through holes (19) for respectively allowing the cooling pipe (71), the spherical fixture (34) and the nozzle (51) to enter the experimental chamber (1).

10. The marine simulated friction corrosion testing device for corrosion-resistant materials according to claim 5, characterized in that: One end of the support arm (33) is provided with a mounting hole (36) for mounting the ball clamp (34), and a locking piece (37) for resisting and locking the ball clamp (34) is provided on a hole wall on one side of the mounting hole (36).

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