Dry-wet alternate corrosion test device and method

Abstract

The invention provides a dry-wet alternate corrosion test device and method. The device comprises at least one first container, at least one second container and a conveying device, the first container is connected with the second container through the conveying device, the first container is used for loading a simulated corrosion solution and a test piece, and the second container is used for loading the simulated corrosion solution. The problem that an existing corrosion test device cannot accurately simulate a dry-wet alternating environment can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of material science and corrosion engineering, and in particular to a dry-wet alternating corrosion test device and method. Background Art

[0002] In the field of materials science, evaluating the corrosion behavior of materials under different environmental conditions is crucial to predicting their service life and performance. Existing corrosion test equipment can only simulate a single dry or wet corrosion environment, and cannot simulate a more complex dry-wet alternating environment.

[0003] The patent document with publication number CN210639067U discloses an oil-water alternating wet corrosion simulation device, which simulates the corrosion process under wet conditions by continuously supplying oil and water. However, this device cannot simulate the corrosion behavior of materials under dry conditions, nor can it simulate the corrosion process under dry-wet alternating conditions, which limits its application in evaluating the corrosion resistance of materials in variable environments.

[0004] In addition, the patent document with publication number CN117553536B describes a natural dry environment test device, which simulates corrosion under dry conditions by controlling the ambient humidity. Although this device can simulate corrosion under dry conditions, it cannot simulate a dry-wet alternating environment, which makes it limited in simulating corrosion behavior in actual application environments.

[0005] The shortcomings of the existing technology are mainly manifested in the following aspects:

[0006] (1) Limitations of environmental simulation: Existing corrosion test equipment can usually only simulate a single dry or wet corrosion environment and cannot simulate a more complex dry-wet alternating environment.

[0007] (2) Deviation of test results: Since it is impossible to simulate the alternating dry-wet environment, the test results of existing devices may deviate greatly from the corrosion behavior of materials in actual applications, affecting the accuracy of material performance evaluation.

[0008] (3) Operational complexity: Existing corrosion testing equipment often requires manual operation to switch between different test conditions, which not only increases the complexity of the operation but may also lead to errors during the test process. Summary of the invention

[0009] In response to the technical problems raised above, a dry-wet alternating corrosion test device and method are provided.

[0010] The technical means adopted by the present invention are as follows:

[0011] A dry-wet alternating corrosion test device comprises: at least one first container, at least one second container and a conveying device, wherein the first container is connected to the second container via the conveying device, the first container is used to load a simulated corrosion solution and a test piece, and the second container is used to load a simulated corrosion solution.

[0012] Furthermore, the first container and the second container have the same structure.

[0013] Furthermore, the first container and the second container are both made of plastic.

[0014] Furthermore, the conveying device adopts a peristaltic pump, and the peristaltic pump is connected with the first container and the second container through a transparent rubber tube.

[0015] Furthermore, when there are multiple first containers, each first container is connected to the second container via two sets of peristaltic pumps (2) arranged in parallel, and each first container and the second container form a loop structure via the two sets of peristaltic pumps (2); or, two adjacent first containers are connected in series via the peristaltic pumps (2), and each first container is connected to the second container via the peristaltic pumps (2), forming a loop structure as a whole; when there are multiple second containers, two adjacent second containers are connected in series via the peristaltic pumps (2), and the first container is connected to one of the second containers.

[0016] Furthermore, the peristaltic pump includes a power plug, a display interface, a pump body and a conversion port, the display interface is arranged on the pump body, the power plug is connected to the pump body through an electric wire, the conversion port is installed on the pump body, and the transparent hose is connected to the conversion port.

[0017] The present invention also provides a test method for a dry-wet alternating corrosion test device, comprising the following steps:

[0018] Step 1: Device assembly: connect the first container, the second container and the peristaltic pump, and pour the prepared simulated corrosion solution into the first container;

[0019] Step 2: Specimen installation: Place the specimen in the first container to ensure that the specimen is evenly exposed to the simulated corrosion solution;

[0020] Step 3: Parameter setting: Set the working parameters of the peristaltic pump, including the flow rate and flow rate of the solution and the start and stop interval of the peristaltic pump;

[0021] Step 4: Test start: Perform a dry-wet alternating corrosion test according to the parameters set by the peristaltic pump. The peristaltic pump will transport the simulated corrosion solution between the first container and the second container.

[0022] Step 5: When dry etching is performed, the simulated corrosion solution in the first container where the specimen is placed is completely pumped out to the second container by a peristaltic pump; when wet etching is performed, the simulated corrosion solution is transported into the first container where the specimen is placed by a peristaltic pump.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The present invention can solve the problem that the existing corrosion test device cannot accurately simulate the dry-wet alternating environment.

[0025] 2. The present invention achieves the purpose of dry-wet alternating corrosion by setting the start-stop intervals of two peristaltic pumps at the same time. When dry corrosion is performed, the simulated corrosion solution in the plastic container where the test piece is placed is completely pumped out by the peristaltic pump; when wet corrosion is performed, the simulated corrosion solution is added to the plastic container where the test piece is placed by the peristaltic pump.

[0026] 3. The present invention can realize automation to a certain extent, reducing the need for manual operation.

[0027] Based on the above reasons, the present invention can be widely promoted in the fields of material research and development, industrial application, and educational research. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 It is a schematic diagram of the dry-wet alternating corrosion test device of the present invention.

[0030] Figure 2 It is a schematic diagram of the peristaltic pump device of the present invention.

[0031] In the figure: 1. container; 2. peristaltic pump; 3. simulated corrosion solution; 4. test piece; 5. transparent hose; 2-1. power plug; 2-2. display interface; 2-3. pump body; 2-4. conversion port. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0039] Example 1

[0040] The present invention provides a dry-wet alternating corrosion test device, which is a test device for simulating the corrosion behavior of materials under dry-wet alternating conditions in a natural environment, and is used to solve the problem that existing corrosion test devices cannot accurately simulate dry-wet alternating environments. Existing corrosion test equipment can usually only simulate a single dry or wet corrosion environment, but cannot simulate the dry-wet alternating corrosion conditions that materials may encounter in actual environments. This limitation leads to a deviation between the test results and the corrosion behavior of the material in actual applications, thereby affecting the accurate evaluation of the corrosion resistance of the material.

[0041] The test device of the present invention comprises a plastic container 1, a peristaltic pump 2, a transparent rubber tube 5, and a simulated corrosion solution 3 and a test piece 4 loaded in the container 1. The first container and the second container both adopt the container 1, that is, two containers 1 are provided, and two peristaltic pumps 2 are provided, wherein the simulated corrosion solution 3 and the test piece 4 are placed in one of the containers 1, and the container 1 is respectively connected with the two peristaltic pumps 2 through two transparent rubber tubes 5, and the simulated corrosion solution 3 is transported through the peristaltic pumps 2, and the flow rate and flow of the simulated corrosion solution 3 are controlled to achieve uniform corrosion of the test piece 4; the other container 1 is also respectively connected with the two peristaltic pumps 2 through two transparent rubber tubes 5, so as to form a complete loop structure.

[0042] Preferably, the start and stop intervals of the two peristaltic pumps 2 are set at the same time to achieve the purpose of dry-wet alternating corrosion. When dry corrosion is performed, the simulated corrosion solution 3 in the container 1 where the test piece 4 is placed is completely pumped out by the peristaltic pump 2; when wet corrosion is performed, the simulated corrosion solution 3 is added to the container 1 where the test piece 4 is placed by the peristaltic pump 2.

[0043] Preferably, the test piece 4 is prepared according to the test requirements, and the test piece 4 is evenly placed in the container 1 , and the test piece 4 can be evenly contacted with the simulated corrosion solution 3 .

[0044] Preferably, the peristaltic pump 2 is composed of a power plug 2-1, a display interface 2-2, a pump body 2-3, and a conversion port 2-4. The display interface 2-2 is arranged on the pump body 2-3, the power plug 2-1 is connected to the pump body 2-3 through an electric wire, the conversion port 2-4 is installed on the pump body 2-3, and the transparent hose 5 is connected to the conversion port 2-4.

[0045] The dry-wet alternating corrosion test device provided by the present invention has a wide range of applications: it is suitable for multiple fields such as material research and development, industrial applications, and educational research, and provides an effective tool for evaluating the corrosion resistance of materials, and has important application prospects.

[0046] The present invention can realize automation to a certain extent, reduces the need for manual operation, and has relatively significant social and economic benefits.

[0047] Example 2

[0048] The present invention also provides a test method for a dry-wet alternating corrosion test device, comprising the following steps:

[0049] 1. Device assembly: First, pour the prepared simulated corrosion solution 3 into the container 1 and connect the peristaltic pump 2.

[0050] 2. Specimen installation: Place the specimen 4 in the container 1 to ensure that the specimen 4 can evenly contact the simulated corrosion solution 3 .

[0051] 3. Parameter setting: Set the working parameters of peristaltic pump 2, including the flow rate and flow rate of the solution and the start and stop interval time of the two peristaltic pumps 2.

[0052] 4. Test start: Perform the dry-wet alternating corrosion test according to the parameters set by the peristaltic pump 2 , and the peristaltic pump 2 will transport the simulated corrosion solution 3 between the two containers 1 .

[0053] 5. When dry etching is performed, the simulated corrosion solution 3 in the container 1 where the test piece 4 is placed is completely pumped out by the peristaltic pump 2; when wet etching is performed, the simulated corrosion solution 3 is transported into the container 1 where the test piece 4 is placed by the peristaltic pump 2.

[0054] Example 3

[0055] Different from Example 1, in this embodiment, two first containers are provided, and one second container is provided, and the two first containers are connected in series through a peristaltic pump 2, and the two first containers are each connected to the second container through a peristaltic pump 2, forming a loop structure as a whole. By providing two first containers, more test pieces 4 can be tested.

[0056] Example 4

[0057] Different from the third embodiment, in the present embodiment, two first containers are provided and one second container is provided, and each first container is connected to the second container via two parallel peristaltic pumps 2, thereby forming two loop structures.

[0058] Preferably, two or more second containers may be provided, which are connected in series via a peristaltic pump 2 to load more simulated corrosion solution 3 .

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dry-wet alternating corrosion test device, characterized in that: include: At least one first container, at least one second container and a conveying device, wherein the first container is connected to the second container via the conveying device, the first container is used to load a simulated corrosion solution (3) and a test piece (4), and the second container is used to load a simulated corrosion solution (3).

2. The dry-wet alternating corrosion test device according to claim 1, characterized in that: The first container and the second container have the same structure.

3. The dry-wet alternating corrosion test device according to claim 1, characterized in that: The first container and the second container are both made of plastic.

4. The dry-wet alternating corrosion test device according to claim 1, characterized in that: The conveying device adopts a peristaltic pump (2), and the peristaltic pump (2) is connected to the first container and the second container through a transparent rubber tube (5).

5. The dry-wet alternating corrosion test device according to claim 4, characterized in that: When there are multiple first containers, each first container is connected to the second container via two sets of peristaltic pumps (2) arranged in parallel, and each first container and the second container form a loop structure via the two sets of peristaltic pumps (2); or, two adjacent first containers are connected in series via the peristaltic pumps (2), and each first container is connected to the second container via the peristaltic pumps (2), forming a loop structure as a whole; when there are multiple second containers, two adjacent second containers are connected in series via the peristaltic pumps (2), and the first container is connected to one of the second containers.

6. The dry-wet alternating corrosion test device according to claim 4, characterized in that: The peristaltic pump (2) comprises a power plug (2-1), a display interface (2-2), a pump body (2-3) and a conversion port (2-4); the display interface (2-2) is arranged on the pump body (2-3); the power plug (2-1) is connected to the pump body (2-3) via an electric wire; the conversion port (2-4) is installed on the pump body (2-3); and the transparent rubber hose (5) is connected to the conversion port (2-4).

7. A test method for the dry-wet alternating corrosion test device according to any one of claims 1 to 6, characterized in that: The steps include: Step 1, device assembly: connect the first container, the second container and the peristaltic pump (2), and pour the prepared simulated corrosion solution (3) into the first container; Step 2: installing the test piece: placing the test piece (4) in the first container, ensuring that the test piece (4) is evenly contacted with the simulated corrosion solution (3); Step 3, parameter setting: setting the working parameters of the peristaltic pump (2), including the flow rate and flow rate of the solution and the start and stop interval time of the peristaltic pump (2); Step 4, test start: perform a dry-wet alternating corrosion test according to the parameters set by the peristaltic pump (2), and the peristaltic pump (2) will transport the simulated corrosion solution (3) between the first container and the second container; Step 5: When dry etching is performed, the simulated corrosion solution (3) in the first container where the test piece (4) is placed is completely pumped out to the second container through the peristaltic pump (2); when wet etching is performed, the simulated corrosion solution (3) is transported into the first container where the test piece (4) is placed through the peristaltic pump (2).

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