Metal material corrosion resistance detection device

Abstract

The utility model discloses a metal material corrosion resistance detection device in the technical field of metal material detection, and aims to overcome the defects of the traditional metal material corrosion resistance detection means. The device is mainly composed of a plurality of detection boxes, a detection mechanism and an air suction mechanism, the bottom of each detection box is provided with supporting legs, the top and the bottom of each detection box are provided with a liquid inlet pipe and a liquid outlet pipe respectively, one side of each detection box is provided with a placing opening with a sealing door, sealing is good, and viewing is facilitated through an observation window; the detection mechanism is arranged corresponding to each detection box, an electric push rod drives a connecting frame and a filter plate to ascend and descend, a metal material is arranged on the filter plate, and a liquid spraying block is matched with a liquid supply assembly to accurately simulate various corrosion scenes, such as control of the spraying flow speed and mode; the air suction mechanism comprises an air suction pump and the like, adjacent detection boxes are communicated, and air flow is regulated through a one-way valve assembly and a balance pipe. The device can simultaneously carry out multi-sample and multi-condition detection and accurately simulate a complex environment, also has excellent safety protection performance, and effectively prevents harmful gas leakage.

Description

Technical Field

[0001] This utility model relates to the field of metal material testing technology, specifically a metal material corrosion resistance testing device. Background Technology

[0002] In modern industry and scientific research, metallic materials are widely used in aerospace, automotive, marine engineering, electronic equipment and other industries, and their corrosion resistance testing is extremely important.

[0003] However, traditional testing methods have many problems. Simple immersion methods merely place metal samples in a single corrosive solution to observe their appearance, making it difficult to simulate complex environments and obtain accurate corrosion rates and mechanisms. For example, when testing marine propeller alloys, simple salt water immersion cannot reproduce real-world operating conditions, resulting in significant deviations in the results. Conventional salt spray test chambers have limited functionality, only providing salt spray with fixed parameters. It is difficult to accurately create the mild, temperature- and humidity-controlled salt spray environment required by electronic component factories, and most do not support simultaneous independent testing of multiple samples, making comparisons of different materials time-consuming and inefficient.

[0004] In addition, the old detection equipment has poor safety protection, and its sealing is not good when using strong acids and alkalis, which can lead to the leakage of harmful gases, endangering personnel health, affecting air quality and surrounding instruments.

[0005] To address the aforementioned issues, this application provides a device for testing the corrosion resistance of metallic materials. Summary of the Invention

[0006] The purpose of this utility model is to provide a metal material corrosion resistance testing device in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A corrosion resistance testing device for metallic materials includes a testing chamber, a testing mechanism, and a suction mechanism, wherein:

[0009] The number of detection boxes is multiple and arranged in an array. The bottom of the two outermost detection boxes is fixed with two support legs. The four support legs are arranged in a rectangular shape. The top and bottom of the detection box are respectively provided with liquid inlet pipe and liquid outlet pipe. The ends of the liquid inlet pipe and the liquid outlet pipe are movably fitted with sealing plugs. One side of the detection box is constructed with a placement port and a closing door is hinged to the placement port. The side of the closing door facing away from the hinge axis is fixed to the detection box by a fixing buckle.

[0010] The number of the testing mechanisms is the same as the number of the testing boxes and they correspond one-to-one. The testing mechanisms are used to test the corrosion resistance of metallic materials.

[0011] The suction mechanism is used to suction air from several of the detection boxes.

[0012] Furthermore, the detection mechanism includes an electric push rod vertically mounted on the top of the detection box. The output end of the electric push rod extends movably into the interior of the detection box and is fixed with a connecting frame. A filter plate is fixed at the bottom of the connecting frame, and metal material is placed on the filter plate. A spray block located directly above the filter plate is installed on the output end of the electric push rod. The spray block has a liquid collection chamber inside, and the bottom of the spray block has several spray nozzles communicating with the liquid collection chamber. The detection mechanism also includes a liquid supply component for supplying liquid into the liquid collection chamber.

[0013] Furthermore, the liquid supply assembly includes a water pump fixed to the outside of the detection box, a hose fixedly connected to the outlet end of the water pump, the other end of the hose penetrating into the interior of the detection box and communicating with the liquid collection chamber, and a suction pipe fixed to the inlet end of the water pump, the other end of the suction pipe penetrating into the interior of the detection box and close to the bottom wall of the interior of the detection box.

[0014] Furthermore, the two adjacent test boxes are connected. The air intake mechanism includes an air intake pump fixed to the outside of one of the test boxes. An air intake pipe is fixed to the air intake end of the air intake pump. The other end of the air intake pipe passes through one of the test boxes. An exhaust pipe is fixed to the air outlet end of the air intake pump. The air intake mechanism also includes a balance pipe installed on one of the test boxes. A one-way valve assembly is provided inside the balance pipe.

[0015] Furthermore, the balance tube is connected to the interior of the connected detection box. The one-way valve assembly includes two retaining rings fixed on the inner wall of the balance tube. A retaining ball is movably disposed between the two retaining rings. The diameter of the retaining ball is larger than the inner diameter of the retaining ring and smaller than the inner diameter of the balance tube. A spring is connected between the retaining ball and one of the retaining rings near the detection box. The outer side of the retaining ball is attached to the inner side of the other retaining ring.

[0016] Furthermore, the closed door has a through-hole structure with a glass observation window fixed to it.

[0017] Furthermore, a sealing ring plate is fixed on the inner wall of the placement opening. When the sealing door closes the placement opening, one side of the sealing door fits tightly against one side of the sealing ring plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This device is equipped with multiple arrayed testing chambers, which can simultaneously conduct multiple testing experiments under different conditions. It can simultaneously test the corrosion resistance of different metal materials or the same metal material under different corrosive environments, greatly improving testing efficiency.

[0020] 2. Compared with the traditional simple immersion method, this solution allows the testing organization to flexibly create various corrosion scenarios. The water pump in the liquid supply component can draw the corrosion liquid from the bottom of the testing tank as needed, and then deliver it through the hose to the liquid collection chamber of the spray block. After that, it is evenly sprayed from the spray nozzle onto the surface of the metal material placed on the filter plate, accurately simulating complex actual working conditions such as intermittent spraying and scouring at different flow rates. This overcomes the shortcomings of the simple immersion method in simulating complex environments and obtaining accurate corrosion rates and mechanisms, providing highly valuable data for scientific research and production.

[0021] 3. The adjacent detection boxes in this solution are connected. Combined with the air intake mechanism, it can not only regulate the overall gas environment in a unified manner, but also achieve directional and controllable gas flow when special gas requirements occur in a local area, thanks to the ingenious design of the one-way valve assembly and the balance tube.

[0022] 4. In this solution, the sealed door and the testing chamber are tightly fitted together by a sealing ring plate, and the sealed door is equipped with a glass observation window. This ensures that the operator can observe the testing process in real time without opening the chamber door, and also ensures the sealing of the testing chamber when using corrosive solutions such as strong acids and alkalis. This effectively prevents the leakage of harmful gases, protects the health of personnel, avoids adverse effects on laboratory air quality and surrounding instruments, and completely solves the problem of poor safety protection of the old testing device. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This utility model Figure 1 A three-dimensional sectional view;

[0025] Figure 3 This utility model Figure 2 An enlarged view of structure A in the middle;

[0026] Figure 4 This utility model Figure 1 A three-dimensional sectional view from another direction;

[0027] Figure 5 This utility model Figure 4 An enlarged view of the B-structure;

[0028] Figure 6 This is a three-dimensional structural diagram of another state of the present invention.

[0029] In the diagram: 1. Detection box; 11. Support leg; 12. Inlet pipe; 13. Outlet pipe; 14. Sealing plug; 15. Placement port; 151. Sealing ring plate; 16. Sealing door; 161. Installation port; 162. Glass observation window; 17. Fixing buckle; 2. Detection mechanism; 21. Electric push rod; 22. Connecting frame; 23. Filter plate; 24. Spray block; 25. Liquid collection chamber; 26. Spray nozzle; 27. Liquid supply assembly; 271. Water pump; 272. Hose; 273. Suction pipe; 3. Air suction mechanism; 31. Air suction pump; 32. Air inlet pipe; 33. Exhaust pipe; 34. Balance pipe; 35. One-way valve assembly; 351. Retaining ring; 352. Clamping ball; 353. Spring. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0031] This application provides a corrosion resistance testing device for metallic materials, mainly to address the numerous problems of traditional testing methods. Simple immersion methods merely place metal samples in a single corrosive solution to observe their appearance, making it difficult to simulate complex environments and obtain accurate corrosion rates and mechanisms. Conventional salt spray test chambers have limited functionality, only providing salt spray with fixed parameters, and often do not support simultaneous independent testing of multiple samples. Comparing different materials is time-consuming and inefficient. Furthermore, existing testing devices suffer from poor safety protection; when using strong acids or alkalis, poor sealing leads to leaks of harmful gases that endanger personnel health, affect air quality, and damage surrounding instruments. The following technical solution is provided, which will be discussed in conjunction with… Figures 1-6 Please provide a detailed explanation:

[0032] A corrosion resistance testing device for metallic materials mainly includes a testing chamber 1, a testing mechanism 2, and a suction mechanism 3, wherein:

[0033] The number of test boxes 1 is multiple and arranged in an array, providing a basic framework for conducting multiple test experiments under different conditions simultaneously. The bottom of the two outermost test boxes 1 is fixed with two support legs 11. The four support legs 11 are arranged in a rectangular shape to ensure that the entire device is placed stably. The top and bottom of the test box 1 are respectively provided with liquid inlet pipe 12 and liquid outlet pipe 13. The ends of the liquid inlet pipe 12 and liquid outlet pipe 13 are movably fitted with sealing plugs 14. The sealing plugs 14 at the ends can be opened and closed as needed, which facilitates the injection and discharge of corrosive liquid and greatly improves the ease of operation. One side of the test box 1 is constructed with a placement port 15 and a closed door 16 is hinged on the placement port 15. This can effectively prevent the leakage of corrosive substances during the test and can be easily opened when it is necessary to place or remove metal material samples. The side of the closed door 16 facing away from the hinge axis is fixed to the test box 1 by a fixing buckle 17. The fixing buckle 17 is a mature existing technology and can be seen in drawers and wardrobes.

[0034] The number of testing units 2 is the same as the number of testing boxes 1 and they correspond one-to-one. Testing units 2 are used to test the corrosion resistance of metallic materials.

[0035] The suction mechanism 3 is used to suction air from several detection boxes 1.

[0036] Further, please refer to Figure 2 , Figure 4 and Figure 5 The detection mechanism 2 includes an electric push rod 21 vertically mounted on the top of the detection box 1. The output end of the electric push rod 21 extends into the interior of the detection box 1 and is fixed with a connecting frame 22. A filter plate 23 is fixed at the bottom of the connecting frame 22. Metal materials are placed on the filter plate 23, providing a stable support platform for the metal materials and effectively supporting them to maintain a fixed position during the detection process. A spray block 24 is installed on the output end of the electric push rod 21, located directly above the filter plate 23. The spray block 24 has a liquid collection chamber 25 inside and several spray nozzles 26 connected to the liquid collection chamber 25 at the bottom. This design allows the corrosive liquid to be evenly sprayed from the liquid collection chamber 25 to the surface of the metal materials through the spray nozzles 26, ensuring that the corrosion effect is applied evenly. The detection mechanism 2 also includes a liquid supply component 27 for supplying liquid into the liquid collection chamber 25. It should be noted that in this embodiment, the electric push rod 21 is model ANT-26.

[0037] In this embodiment, corrosive liquid is added to the inside of the test chamber 1 through the liquid inlet pipe 12. According to the test requirements of the metal material, the filter plate 23 is driven by the electric push rod 21 to descend until it submerges the metal material or submerges half of it. Alternatively, the electric push rod 21 is not working, and the liquid supply component 27 sprays the metal material through the spray nozzle 26.

[0038] Furthermore, the liquid supply assembly 27 includes a water pump 271 fixed on the outside of the test chamber 1. A hose 272 is fixedly connected to the outlet end of the water pump 271. The other end of the hose 272 penetrates into the interior of the test chamber 1 and is connected to the collection chamber 25. The hose 272 has good flexibility and can adapt to certain angle changes. Its other end precisely penetrates into the interior of the test chamber 1 and smoothly connects to the collection chamber 25 of the spray block 24, ensuring that the corrosion liquid delivery path is sealed and stable, eliminating the risk of leakage. A suction pipe 273 is fixed to the inlet end of the water pump 271. The other end of the suction pipe 273 penetrates into the interior of the test chamber 1 and is close to the bottom wall of the interior of the test chamber 1. This layout can maximize the extraction of corrosion liquid accumulated at the bottom of the test chamber 1, avoiding uneven corrosion liquid composition due to residual liquid accumulation, which affects the test effect, ensuring the integrity and stability of the liquid supply, and eliminating the waste of corrosion liquid. It should be noted that in this embodiment, the water pump 271 is a CQB type magnetic drive pump.

[0039] To remove harmful gases released during the testing process, please refer to [link / reference needed]. Figure 2 and Figure 3 The two adjacent detection boxes 1 are connected. In view of the need to remove the harmful gases released during the detection process, the layout of the two adjacent detection boxes 1 being connected is adopted to build a gas interconnection system, which facilitates centralized treatment of harmful gases and optimizes the overall gas environment. The suction mechanism 3 includes a suction pump 31 fixed on the outside of one of the detection boxes 1. The air inlet end of the suction pump 31 is fixed with an air inlet pipe 32. The other end of the air inlet pipe 32 passes through one of the detection boxes 1 to ensure effective capture of harmful gases in the box. The air outlet end of the suction pump 31 is fixed with an exhaust pipe 33, which provides a smooth channel for the discharge of the treated gas. The suction mechanism 3 also includes a balance pipe 34 installed on one of the detection boxes 1. The balance pipe 34 is equipped with a one-way valve assembly 35 to ensure the pressure balance inside the detection box 1 and prevent harmful gases from overflowing. It should be noted that in this embodiment, the suction pump 31 is model VCH1028.

[0040] For details, please refer to Figure 3 The balance tube 34 is connected to the inside of the detection box 1, which provides a key channel for the dynamic balance of gas between the detection boxes 1. The one-way valve assembly 35 includes two retaining rings 351 fixed on the inner wall of the balance tube 34. A retaining ball 352 is movably arranged between the two retaining rings 351. The diameter of the retaining ball 352 is larger than the inner diameter of the retaining ring 351 and smaller than the inner diameter of the balance tube 34. A spring 353 is connected between the retaining ball 352 and one of the retaining rings 351 that is close to the detection box 1. The outer side of the retaining ball 352 is attached to the inner side of the other retaining ring 351.

[0041] When the detection environment is stable, the spring 353 maintains the initial position of the ball 352, preventing gas from flowing backward through the one-way valve assembly 35. During the detection process, the suction pump 31 absorbs harmful gases, causing the internal pressure of the detection chamber 1 to decrease. When this pressure is sufficient to overcome the elasticity of the spring 353, the ball 352 gradually moves away from the originally fitted retaining ring 351 and towards the side closer to the spring 353. At this time, the gas can flow through the newly formed gap between the ball 352 and the retaining ring 351 to the adjacent detection chamber 1 via the balance pipe 34, achieving pressure balance regulation. When the factors causing the pressure change disappear and the pressure inside the detection chamber 1 returns to stability or decreases, the spring 353 will resume its function, pushing the ball 352 back to its initial fitted position, blocking the gas backflow channel again, and ensuring that the gas in each detection chamber 1 flows in an orderly manner in the predetermined direction.

[0042] Furthermore, please refer to Figure 6The closed door 16 has a through structure with an installation port 161, and a glass observation window 162 is fixed on the installation port 161. The glass observation window 162 allows the operator to clearly see the detection situation inside the detection box 1.

[0043] A sealing ring plate 151 is fixed on the inner wall of the placement port 15. When the sealing door 16 closes the placement port 15, one side of the sealing door 16 fits tightly against one side of the sealing ring plate 151. The elastic deformation of the sealing ring plate 151 fills the tiny gaps, forming a tight sealing barrier to effectively prevent corrosive liquids and harmful gases from leaking from the placement port 15 during the testing process.

[0044] The specific testing methods of this metal material corrosion resistance testing device are as follows:

[0045] First, in the preparation stage, the operator places the metal material samples to be tested one by one on the corresponding testing mechanism 2 in each testing box 1. Specifically, the operator first releases the fixing buckle 17 of the sealing door 16, opens the sealing door 16 outward, and places the metal material steadily on the filter plate 23 of the testing mechanism 2 through the placement port 15. Then, the operator closes the sealing door 16 and fastens the fixing buckle 17.

[0046] Next, inject the corrosive liquid. Select the appropriate corrosive liquid according to the testing requirements and inject it into the chamber through the liquid inlet pipe 12 at the top of the testing chamber 1. After the injection is completed, plug the sealing plug 14 at the end of the liquid inlet pipe 12 to ensure the seal. At this time, the corrosive liquid accumulates at the bottom of the testing chamber 1.

[0047] Then, the detection mechanism 2 and the suction mechanism 3 operate synchronously. For the detection mechanism 2, if the detection requirement is full immersion detection, the electric push rod 21 is started by the control system (referring to the switch that controls the electric push rod 21), so that its output end drives the connecting frame 22 and the filter plate 23 fixed at the bottom to descend until the metal material is completely submerged in the corrosion liquid. If it is half immersion detection, the electric push rod 21 is controlled to submerge the metal material just halfway. If the spray detection is used, the electric push rod 21 does not work, the liquid supply component 27 is started, the water pump 271 fixed outside the detection box 1 is running, and the corrosion liquid at the bottom of the detection box 1 is drawn by the suction pipe 273 and transported to the liquid collection chamber 25 of the spray block 24 through the hose 272 at the liquid outlet. The corrosion liquid is then evenly sprayed onto the surface of the metal material from several spray nozzles 26 at the bottom of the spray block 24 to simulate actual corrosion scenarios such as intermittent spraying and scouring at different flow rates.

[0048] During the testing process, the suction mechanism 3 operates continuously to ensure environmental safety. The suction pump 31 captures harmful gases generated in the testing chamber 1 through the intake pipe 32 at the intake end. The gas is discharged through the exhaust pipe 33. When the suction pump 31 draws air, causing the air pressure in the testing chamber 1 to decrease, the one-way valve assembly 35 in the balance pipe 34 takes effect. If the air pressure change is sufficient to overcome the elastic force of the spring 353, the locking ball 352 moves, and the gas flows through the gap between the locking ball 352 and the retaining ring 351 through the balance pipe 34 to the adjacent testing chamber 1, achieving air pressure balance. After the air pressure is restored, the spring 353 pushes the locking ball 352 back to its original position, blocking the backflow.

[0049] Throughout the testing process, operators do not need to open the sealed door 16. They can observe the corrosion status of the metal materials inside the testing chamber 1 in real time through the glass observation window 162 on the sealed door 16, such as whether rust spots or corrosion pits appear on the surface, whether the solution changes color or bubbles, etc. If any abnormalities are found, the testing parameters can be adjusted in time, such as changing the lifting height of the electric push rod 21, the flow rate of the water pump 271, and the power of the suction pump 31, to ensure accurate and smooth testing. After the testing is completed, the operation of each mechanism is stopped first, the sealing plug 14 is opened to drain the waste liquid, and then the sealed door 16 is opened to take out the metal material sample. The testing chamber 1 is then cleaned to prepare for the next test.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A metal material corrosion resistance detection device, comprising a detection box (1), a detection mechanism (2) and an air suction mechanism (3), characterized in that, Wherein: The number of the detection box (1) is multiple and is arrayed, the bottom of the two detection boxes (1) of the edge is fixed with two support legs (11), four support legs (11) are rectangularly distributed, the top and bottom of the detection box (1) are provided with liquid inlet pipe (12) and liquid outlet pipe (13) respectively, the end of the liquid inlet pipe (12) and the liquid outlet pipe (13) is movably sleeved with the plugging plug (14), one side of the detection box (1) is structured with the placing opening (15) and the closing door (16) is hinged on the placing opening (15), the side away from the hinge shaft of the closing door (16) is fixed with the detection box (1) through the fixed buckle (17); The number of the detection mechanism (2) is same as the number of the detection box (1) and one-to-one correspondence, the detection mechanism (2) is used for detecting the corrosion resistance of metal material; The air suction mechanism (3) is used for air suction to several detection boxes (1).

2. The metal material corrosion resistance detection device according to claim 1, characterized in that: The detection mechanism (2) includes the electric push rod (21) vertically installed on the top of the detection box (1), the output end of the electric push rod (21) is movably penetrated into the inside of the detection box (1) and is fixed with the connecting frame (22), the bottom of the connecting frame (22) is fixed with the filter plate (23), the metal material is placed on the filter plate (23), the output end of the electric push rod (21) is installed with the liquid spraying block (24) above the filter plate (23), the inside of the liquid spraying block (24) is structured with the liquid collecting cavity (25), the bottom of the liquid spraying block (24) is structured with several liquid spraying openings (26) communicated with the liquid collecting cavity (25), the detection mechanism (2) further includes the liquid supply assembly (27) for supplying liquid to the inside of the liquid collecting cavity (25).

3. The device for detecting corrosion resistance of a metal material according to claim 2, characterized in that: The liquid supply assembly (27) includes the water pump (271) fixed on the outside of the detection box (1), the liquid outlet end of the water pump (271) is fixedly connected with the hose (272), the other end of the hose (272) is penetrated into the inside of the detection box (1) and is communicated with the liquid collecting cavity (25), the liquid inlet end of the water pump (271) is fixed with the liquid suction pipe (273), the other end of the liquid suction pipe (273) is penetrated into the inside of the detection box (1) and is close to the bottom wall in the inside of the detection box (1).

4. The metal material corrosion resistance detection device according to claim 1, characterized in that: Two adjacent detection boxes (1) are communicated, the air suction mechanism (3) includes the air suction pump (31) fixed on the outside of one of the detection boxes (1), the air inlet end of the air suction pump (31) is fixed with the air inlet pipe (32), the other end of the air inlet pipe (32) is penetrated into one of the detection boxes (1), the air outlet end of the air suction pump (31) is fixed with the air outlet pipe (33), the air suction mechanism (3) further includes the balance pipe (34) installed on one of the detection boxes (1), the inside of the balance pipe (34) is provided with the one-way valve assembly (35).

5. The device for detecting corrosion resistance of a metal material according to claim 4, characterized in that: The balance pipe (34) is communicated with the inside of the detection box (1) connected, the one-way valve assembly (35) includes two fixed in the inner wall of the balance pipe (34) blocking ring (351), two the blocking ring (351) between the movable setting has a ball (352), the diameter of the ball (352) is greater than the inner diameter of the blocking ring (351) and less than the inner diameter of the balance pipe (34), the ball (352) and one of the blocking ring (351) close to the detection box (1) between the spring (353) is connected, the outside of the ball (352) is attached to the inside of the other blocking ring (351).

6. The metal material corrosion resistance detection device according to claim 1, characterized in that: The closing door (16) is provided with a mounting opening (161) penetratingly formed thereon, and a glass observation window (162) is fixed on the mounting opening (161).

7. The metal material corrosion resistance detection device according to claim 1, characterized in that: The inner wall of the placing opening (15) is fixed with a sealing ring plate (151), and when the closing door (16) closes the placing opening (15), one side of the closing door (16) is tightly attached to one side of the sealing ring plate (151).

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