A method, system, equipment and medium for analyzing the composition of rust layer on the surface of weathering steel

Abstract

The present invention discloses a method, system, equipment and medium for analyzing the composition of rust layer on the surface of weathering steel, which includes filling and vacuuming the area to be treated of the weathering steel; stripping the rust layer of different depths in the area by excitation of glow discharge; and performing Raman spectrum analysis on the components of any rust layer. It can achieve the effect of stripping and analyzing the rust layer layer by layer. Compared with the cutting cross-section analysis, it will not cause damage to the rust layer due to the shear stress of the tool, and ensure the integrity of the rust layer at the required depth as much as possible. At the same time, compared with scraping the rust layer, it will not cause the mixing of the inner and outer rust layers, resulting in the inability to accurately obtain the distribution of rust layer elements in the vertical direction, thereby improving the accuracy of rust layer detection.

Description

Technical Field

[0001] The present invention relates to the field of corrosion and protection technology, and in particular to a method, system, equipment and medium for analyzing the composition of rust layer on the surface of weathering steel. Background Art

[0002] Weathering steel has a significant advantage in atmospheric corrosion resistance over carbon steel. Studies have found that the atmospheric corrosion resistance of weathering steel is related to the dense oxide layer gradually formed on its surface, which can prevent the entry of corrosive media, thereby preventing or slowing down the continued development of rust on steel materials. Therefore, it is very important and necessary to conduct relevant research on the rust layer on the surface of weathering steel.

[0003] In the prior art, the research on the rust layer on the surface of weathering steel is currently mainly at the stage of data collection and qualitative analysis. The main analysis methods are: 1. Observe the cross-sectional morphology of the rust layer using a scanning electron microscope; 2. Scrape off the rust layer on the surface of the weathering steel and analyze the rust layer components using infrared spectroscopy, Raman spectroscopy, and X-ray diffraction spectroscopy; 3. Use electrochemical testing to obtain the impedance of the rust layer and infer the oxidation process of the rust layer. In addition, the density of α-FeOOH in the rust layer is good, especially the high content of α-FeOOH in the inner rust layer can significantly improve the corrosion resistance of the entire rust layer. Therefore, the composition of the inner rust layer and the content of each component can be better analyzed, which provides strong support for evaluating the corrosion resistance of weathering steel. Infrared spectroscopy, Raman spectroscopy, and X-ray diffraction spectroscopy can all effectively analyze the composition of the rust layer on the surface of weathering steel, but these methods require the rust layer to be scraped off the surface of the sample, and some test methods such as X-ray diffraction spectroscopy require the mass of the rust layer to reach about 2g during testing. Although these methods can solve the problem of rust layer composition, they also have certain shortcomings. On the one hand, scraping the rust layer off the surface of the sample destroys the rust layer, and it may not be scraped cleanly, resulting in incomplete analysis results; on the other hand, after the rust layer is scraped off, the inner and outer rust layers have been mixed together. In this way, the measured distribution of rust layer components cannot distinguish the difference between the inner and outer rust layers, thereby affecting the entire corrosion process of the material and the judgment and analysis of the later corrosion resistance. Summary of the invention

[0004] The embodiments of the present application at least partially solve the technical problem in the prior art that cutting cross sections and hanging rust layers will destroy the difference between inner and outer rust layers by providing a method, system, equipment and medium for analyzing the composition of rust layers on the surface of weathering steel, thereby achieving the technical effect of more accurate detection and analysis of rust layers.

[0005] In the first aspect, in order to solve the above technical problems, the embodiments of the present invention provide the following technical solutions:

[0006] A method for analyzing the composition of rust layer on the surface of weathering steel, comprising:

[0007] Fill and vacuum the area of ​​the weathering steel to be treated;

[0008] The rust layers at different depths in the above-mentioned areas are stripped by excitation of glow discharge;

[0009] The components of any of the above rust layers are analyzed by Raman spectroscopy.

[0010] Optionally, the step of stripping the rust layers at different depths in the above-mentioned area by excitation of glow discharge further includes:

[0011] By controlling the excitation time of the glow discharge excitation, the rust layers at different depths in the above-mentioned area are stripped.

[0012] Optionally, the step of stripping the rust layers at different depths in the above-mentioned area by excitation of glow discharge further includes:

[0013] After the initial peeling and Raman spectroscopy analysis, the above-mentioned area is positioned using a fixture with a positioning device;

[0014] When a second peeling is performed based on the same above-mentioned area, the original position is restored through a preset transmission mechanism based on the above-mentioned positioning.

[0015] Optionally, the step of positioning the area using a fixture with a positioning device further includes:

[0016] Select a point on the above area as the reference point;

[0017] Controlling a fixture with a positioning device to clamp the weathering steel;

[0018] Establishing a coordinate axis based on the above positioning device and the corresponding preset transmission mechanism;

[0019] The coordinate information of the reference point is obtained according to the coordinate axis.

[0020] Optionally, the step of selecting a point on the area as a reference point further includes:

[0021] The above area is set to a circular shape, and the center of the circle is used as a reference point.

[0022] Optionally, the above-mentioned step of filling and vacuuming the area to be treated of the weathering steel further includes:

[0023] The above area is filled with a preset insulating material, and the rubber ring of the glow spectrum anode electrode of the above insulating material is overlapped.

[0024] Optionally, the step of filling the area with a preset insulating material further includes:

[0025] Use silicone rubber to fill and dry the above areas in turn, and repeat several times.

[0026] In a second aspect, a system for analyzing the composition of rust layer on the surface of weathering steel is provided, the system comprising:

[0027] A pre-treatment module, used to fill and vacuum the area of ​​the weathering steel to be treated;

[0028] A rust layer stripping module is used to strip the rust layers at different depths in the above-mentioned area by excitation of glow discharge;

[0029] Analysis module, to perform Raman spectroscopy analysis on any of the above rust layer components

[0030] In a third aspect, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps corresponding to the method of the first aspect when executing the computer program.

[0031] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the steps corresponding to the above method in the first aspect are implemented.

[0032] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0033] The area to be treated of the weathering steel is filled and evacuated using a preset insulating material, such as silicone rubber, so that the vacuum degree of the glow spectrum anode can meet the analysis requirements when evacuating the vacuum, thereby peeling off the rust layer on the surface of the sample layer by layer. The components on the surface of the treated sample are analyzed in situ and non-destructively. Through glow excitation, the rust layers of different depths are peeled off to achieve tracking analysis of the components of the rust layers of different depths. At the same time, a precise positioning device is designed to realize rust peeling of the same part at different time periods. This enables real-time tracking and analysis of the entire rust layer of the weathering steel from the surface to the steel base. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0035] Figure 1 A flow chart of a method for analyzing the composition of rust layer on the surface of weathering steel provided in this application;

[0036] Figure 2 Raman spectrum of the untreated surface of S450EW super weathering steel provided in this application;

[0037] Figure 3 This is the surface Raman spectrum of S450EW super weathering steel provided in this application after glow discharge excitation for 60 minutes;

[0038] Figure 4 The surface Raman spectrum of S450EW super weathering steel provided in this application after glow discharge excitation for 120 minutes;

[0039] Figure 5 The surface Raman spectrum of S450EW super weathering steel provided in this application after glow discharge excitation for 180 minutes;

[0040] Figure 6 A schematic diagram of the structure of a system for analyzing the composition of rust layer on the surface of weathering steel provided in this application;

[0041] Figure 7 A schematic diagram of the structure of an electronic device provided in this application. DETAILED DESCRIPTION

[0042] 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 part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the term "setting" should be understood in a broad sense, for example, it can be a fixed setting, a detachable setting, or an integral setting; it can be a mechanical setting, or an electrical setting; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations of the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0047] The embodiments of the present application improve the technical problem in the prior art that cutting cross sections and hanging rust layers will destroy the difference between inner and outer rust layers by providing a method, system, equipment and medium for analyzing the composition of rust layers on the surface of weathering steel, thereby achieving the technical effect of more accurate detection and analysis of rust layers.

[0048] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0049] The area to be treated of the weathering steel is filled and evacuated using a preset insulating material, such as silicone rubber, so that the vacuum degree of the glow spectrum anode can meet the analysis requirements when evacuating the vacuum, thereby peeling off the rust layer on the surface of the sample layer by layer. The components on the surface of the treated sample are analyzed in situ and non-destructively. Through glow excitation, the rust layers of different depths are peeled off to achieve tracking analysis of the components of the rust layers of different depths. At the same time, a precise positioning device is designed to realize rust peeling of the same part at different time periods. This enables real-time tracking and analysis of the entire rust layer of the weathering steel from the surface to the steel base.

[0050] In the present application, the following examples are provided: Figure 1 A method for analyzing the composition of rust layer on the surface of weathering steel is shown, the method comprising steps S101 to S103:

[0051] Step S101, filling and vacuuming the area of ​​the weathering steel to be treated;

[0052] It should be noted that before using glow discharge for stripping, the weathering steel to be treated needs to be pretreated so that the vacuum degree of the glow spectrum anode can meet the analysis requirements when evacuating the vacuum. Therefore, the area of ​​the weathering steel to be treated is filled.

[0053] Step S102, stripping the rust layers at different depths in the above-mentioned area by excitation of glow discharge;

[0054] It should be noted that glow discharge emission spectroscopy is a spectral analysis technique developed based on the principle of inert gas discharge under low pressure. Glow discharge spectroscopy is a surface analysis technique suitable for the analysis of metals, non-metals, thin films, semiconductors, insulators and organic materials. The analysis time of glow spectroscopy is relatively short, generally a few minutes to more than ten minutes, and the depth resolution can reach the nanometer level. Compared with other surface analysis methods, glow spectroscopy has the advantages of fast analysis speed, convenient quantification, low price and easy operation. Therefore, this embodiment uses glow discharge emission spectroscopy to peel off the sample layer by layer from the surface to the steel base, so as to obtain the content distribution of each element with depth.

[0055] Step S103, performing Raman spectroscopy analysis on the components of any of the above rust layers.

[0056] It should be noted that the Raman spectroscopy analysis is to place the area to be treated after the glow discharge excitation treatment into the Raman spectroscopy injection chamber, and select the surface after the excitation to perform the phase analysis of the layer.

[0057] It should also be noted that in the process of placing the steel into the Raman spectroscopy injection chamber, it can be placed manually or a conveyor belt can be set up for automatic transportation. For example, after receiving a signal from the glow discharge device that the excitation is completed, the clamp holding the weathering steel to be treated is controlled to place the weathering steel to be treated on the conveyor belt, and then the robotic arm places it into the spectroscopy injection chamber for phase analysis.

[0058] Furthermore, the step of stripping the rust layers at different depths in the above-mentioned area by excitation of glow discharge further includes: stripping the rust layers at different depths in the above-mentioned area by controlling the excitation time of the above-mentioned glow discharge excitation.

[0059] It should be noted that for glow discharge equipment, the stripping of different rust layers can be completed by controlling the excitation power or excitation time of the glow discharge, but for glow discharge equipment, controlling the power requires mastering the corresponding relationship between the power and the stripping speed of different rust layers, and its operation is relatively complicated. Therefore, this embodiment adopts constant power and controls the excitation time to control the stripping depth, which is also convenient for operators to observe and improves convenience.

[0060] Furthermore, the step of stripping the rust layers at different depths in the above-mentioned area by excitation of glow discharge further includes:

[0061] After the initial peeling and Raman spectrum analysis, the above-mentioned area is positioned using a fixture with a positioning device; when a second peeling is performed based on the same above-mentioned area, it is restored to the original position through a preset transmission mechanism based on the above positioning.

[0062] It should be noted that the vertical distribution of the rust layer often requires simultaneous detection and analysis of multiple layers, so it is necessary to detect different depths at the same position. However, after the first detection, the position has moved, and it is cumbersome to restore the position. Therefore, this embodiment uses a fixture with a positioning device to position the weathering steel to be treated, wherein the positioning device can use multiple laser devices in the moving direction to measure the distance based on a fixed reference plate, thereby obtaining high-precision position data. And according to this position data, it is restored to the original position by controlling the preset transmission mechanism. The transmission mechanism can be a servo motor driving a screw rod to control the movement of the fixture, or a servo motor can control the synchronous belt to move.

[0063] Furthermore, the step of positioning the above-mentioned area using a clamp with a positioning device also includes: selecting a point on the above-mentioned area as a reference point; controlling the clamp with a positioning device to clamp the above-mentioned weathering steel; establishing a coordinate axis based on the above-mentioned positioning device and a corresponding preset transmission mechanism; and obtaining coordinate information of the above-mentioned reference point according to the above-mentioned coordinate axis.

[0064] It should be noted that the area to be treated on the weathering steel can be set as needed, and its shape can be rectangular, circular, triangular or other shapes. If it is a rectangle, the reference point uses the focus of the diagonal of the rectangle; if it is a triangle, the reference point uses the center of gravity; if it is a circle, the reference point uses the center of the circle. The fixture can be clamped by a mechanical arm with a sample clamp, and the coordinate axis is established according to the corresponding transmission mechanism, that is, the reference point is the analysis point corresponding to the anode of the glow discharge emission spectrometer. The horizontal and vertical coordinates of the positioning device are set according to the needs of the analysis and test. A 0-point position is set on the positioner, and other positions are set correspondingly relative to the 0-point. The horizontal coordinate of the positioning device can be moved left and right, and the vertical coordinate can be moved up and down. By setting the coordinate position on the positioning device, the specific position of the sample is determined, and the analysis position is the center of the drawn silicone rubber ring. This facilitates the continuation of secondary detection.

[0065] Furthermore, the step of selecting a point on the area as a reference point further includes:

[0066] The above area is set to a circular shape, and the center of the circle is used as a reference point.

[0067] It should be noted that, because the glow discharge emission spectrum anode is circular, in order to fit the glow discharge emission spectrum anode as much as possible, the preferred area to be processed in this embodiment is circular. Also, because the diameter of the glow discharge emission spectrum anode is 4 mm, the part to be analyzed is controlled within a circle with a diameter of 4 mm as much as possible, the center of the circle is determined, and the radius is selected at 5 mm to draw a circle.

[0068] Furthermore, the above-mentioned step of filling and vacuuming the area to be treated of the weathering steel further includes:

[0069] The above area is filled with a preset insulating material, and the rubber ring of the glow spectrum anode electrode of the above insulating material is overlapped.

[0070] It should be noted that, for the material used for filling, insulating material is selected due to the specific factors of the glow discharge emission spectrum. At the same time, in order to facilitate the filling operation, fluid filling and drying are used.

[0071] Furthermore, the step of filling the above-mentioned area with a preset insulating material further includes:

[0072] Use silicone rubber to fill and dry the above areas in turn, and repeat several times.

[0073] It should be noted that, for insulating materials, silicone rubber is preferred in this embodiment, that is, a brush dipped in silicone rubber is used to draw a circle with a radius of 6 mm to completely cover the area to be treated. The difference between the inner and outer diameters of the circle is 2 mm, that is, the width of the ring is 2 mm. After the silicone rubber is dry, the operation is repeated 3-5 times at the same position until the silicone rubber is completely dry; this step is intended to fill the uneven rust layer with silicone rubber, so that the silicone rubber overlaps with the rubber ring of the glow spectrum anode electrode. When the vacuum is turned on, the vacuum degree in the anode can meet the analysis requirements.

[0074] Taking super weathering steel S450EW as an example, specific experimental data are given for description:

[0075] Firstly, Raman spectroscopy was used to analyze the composition of the rust layer on the surface of super weathering steel, that is, the surface of S450EW super weathering steel was not treated, such as Figure 2 As shown. The rust layer is at 249 and 384 cm -1 There are obvious Raman characteristic peaks at the rust layer, indicating that the main components of the rust layer are α-FeOOH and γ-FeOOH. At this time, the Raman peak height of γ-FeOOH is slightly higher than that of α-FeOOH.

[0076] Then the first layer of detection is carried out, and the super weathering steel S450EW with rust layer is pretreated by glow discharge emission spectroscopy. First, clamp the sample on the positioning device, set the horizontal coordinate X to 10mm, and the vertical coordinate Y to 40mm. After positioning, use the point where X and Y intersect as the origin and draw a circle with a radius of 6mm, brush on silicone rubber, wait until the silicone rubber is almost dry, brush again, repeat brushing 3 times, wait until the silicone rubber is completely dry, use the sample as the anode, adsorb it in the injection chamber of the glow discharge spectrometer, so that the gasket outside the anode overlaps with the silicone rubber; then evacuate, wait for the sample to be firmly adsorbed, and start excitation after the vacuum degree reaches the requirements of the instrument. The excitation power is 20kw, the excitation time is 60min, and the rust layer with an excitation depth of 25μm is measured. After the excitation is completed, remove the sample and put it into the Raman spectrum injection chamber to start Raman spectrum analysis. The analysis results are as follows Figure 3 As shown, the rust layer of S450EW was measured at 229, 294, and 406 cm -1 There is an obvious Raman characteristic peak at the rust layer. Compared with the standard spectrum, it can be seen that the main component of the rust layer is α-Fe2O3.

[0077] Continue to analyze the second layer (i.e., the second detection at the same position), and after the detection depth increases, clamp the sample on the positioning device again, and set the horizontal coordinate X to 10mm and the vertical coordinate Y to 40mm. Then, the part that was analyzed last time can be analyzed again. The excitation power is 20kw. Since the first layer has been peeled off last time, the excitation time is still set to 60min. Measure the rust layer with an excitation depth of 48μm. After the excitation is completed, remove the sample and put it into the Raman spectrum sampling chamber to start Raman spectrum analysis. The analysis results are as follows: Figure 4 As shown (the result is the same as the result of direct glow excitation time 120min), the rust layer is at 251, 292, 378, 676cm -1 There are obvious Raman characteristic peaks at 676cm. Compared with the standard image library, it can be seen that the main components of the rust layer here are α-FeOOH and γ-FeOOH, while 676cm -1 The corresponding Raman peak indicates that there may be Fe3O4 here. Figure 1 and Figure 3 Discover, Figure 3 Medium 251cm -1 The Raman peak height ratio Figure 1 Medium 251cm -1 The peak height at 378cm is lower, indicating that the content of γ-FeOOH is lower, while the peak at 378cm -1 The Raman peak heights are relatively close, indicating that the content of α-FeOOH in the rust layer is relatively stable from the outside to the inside, with little change.

[0078] Finally, the third layer of analysis is continued (i.e. the third test at the same position), the sample is clamped on the positioning device again, and the horizontal coordinate X is set to 10mm and the vertical coordinate Y is set to 40mm. Then the part that was analyzed last time can be analyzed again. The excitation power is 20kw, and the excitation time is still set to 60min. That is, the rust layer in the first two tests has been peeled off, and the third layer of rust is tested. The rust layer with an excitation depth of 68μm is measured; after the excitation is completed, the sample is removed and placed in the Raman spectrum sampling chamber, and the Raman spectrum analysis is started. The analysis results are as follows Figure 5 As shown in the figure (the result is the same as the result of direct glow excitation time of 180 minutes), there is almost no obvious characteristic peak in the Raman spectrum, which means that the substrate has been basically excited, which means that the entire rust layer has been excited. In this way, the effect of peeling off layer by layer for analysis is achieved. Compared with the cutting section, the rust layer will not be damaged by the cutting stress of the tool, and the integrity of the rust layer at the required depth is guaranteed as much as possible. At the same time, compared with scraping the rust layer, it will not cause the mixing of the inner and outer rust layers, resulting in the inability to accurately obtain the distribution of the rust layer elements in the vertical direction, thereby improving the accuracy of rust layer detection.

[0079] Based on the same inventive concept, the embodiment of the present application provides a system for analyzing the composition of the rust layer on the surface of weathering steel, such as Figure 6 As shown, including:

[0080] Pretreatment module 201, used for filling and vacuuming the area of ​​the weathering steel to be treated;

[0081] The rust layer stripping module 202 is used to strip the rust layers at different depths in the above-mentioned area by excitation of glow discharge;

[0082] The analysis module 203 performs Raman spectroscopy analysis on any of the above components of the rust layer.

[0083] Based on the same inventive concept, the embodiment of the present application provides an electronic device, such as Figure 7 As shown, it includes: a memory 302, a processor 301, and a computer program stored in the above-mentioned memory 302 and executable on the above-mentioned processor 301. When the above-mentioned processor 301 executes the above-mentioned computer program, the above-mentioned method for analyzing the composition of the rust layer on the surface of weathering steel is implemented.

[0084] Based on the same inventive concept, this embodiment provides a computer-readable storage medium on which a computer program is stored, characterized in that when the program is executed by the processor 301, the method for analyzing the composition of the rust layer on the surface of weathering steel is implemented.

[0085] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0086] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0087] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0088] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0089] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for analyzing the composition of rust layer on the surface of weathering steel, characterized in that: The method comprises: Fill and vacuum the area of ​​the weathering steel to be treated; The rust layers at different depths in the area are stripped by excitation of glow discharge; Performing Raman spectroscopy analysis on the components of any of the rust layers; The step of stripping the rust layers at different depths in the region by excitation of glow discharge also includes: After the initial stripping and Raman spectroscopy analysis, the region is positioned using a fixture with a positioning device; When performing secondary peeling based on the same area, the positioning is restored to the original position through a preset transmission mechanism; The step of positioning the area using a fixture with a positioning device also includes: Select a point on the area as a reference point; Controlling a fixture with a positioning device to clamp the weathering steel; Establishing a coordinate axis based on the positioning device and the corresponding preset transmission mechanism; Acquire coordinate information of the reference point according to the coordinate axis; The step of selecting a point on the area as a reference point also includes: Setting the area to any one of a circle, a rectangle or a triangle; If the area is set to be circular, the center of the circle is used as the reference point; If the area is set as a rectangle, the focus of the diagonal line of the rectangle is used as the reference point; If the area is set as a triangle, the center of gravity of the triangle is used as the reference point.

2. The method according to claim 1, characterized in that The step of stripping the rust layers at different depths in the region by excitation of glow discharge also includes: By controlling the excitation time of the glow discharge excitation, the rust layers at different depths in the area are stripped.

3. The method according to claim 1, characterized in that The step of filling and vacuuming the area to be treated of the weathering steel also includes: The area is filled with a preset insulating material, and the rubber ring of the glow spectrum anode electrode of the insulating material is overlapped.

4. The method according to claim 3, characterized in that The step of filling the area with a preset insulating material also includes: The area is filled and dried in sequence using silicone rubber, and this process is repeated multiple times.

5. A system for analyzing the composition of rust layer on the surface of weathering steel, characterized in that: The system comprises: A pre-treatment module, used to fill and vacuum the area of ​​the weathering steel to be treated; A rust layer stripping module, used for stripping rust layers at different depths in the area by excitation of glow discharge; An analysis module for performing Raman spectroscopy analysis on any component of the rust layer; The step of stripping the rust layers at different depths in the region by excitation of glow discharge also includes: After the initial stripping and Raman spectroscopy analysis, the region is positioned using a fixture with a positioning device; When performing secondary peeling based on the same area, the positioning is restored to the original position through a preset transmission mechanism; The step of positioning the area using a fixture with a positioning device also includes: Select a point on the area as a reference point; Controlling a fixture with a positioning device to clamp the weathering steel; Establishing a coordinate axis based on the positioning device and the corresponding preset transmission mechanism; Acquire coordinate information of the reference point according to the coordinate axis; The step of selecting a point on the area as a reference point also includes: Setting the area to any one of a circle, a rectangle or a triangle; If the area is set to be circular, the center of the circle is used as the reference point; If the area is set as a rectangle, the focus of the diagonal line of the rectangle is used as the reference point; If the area is set as a triangle, the center of gravity of the triangle is used as the reference point.

6. An electronic device, characterized in that: The electronic device comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the method steps described in any one of claims 1 to 4 when executing the computer program.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps corresponding to the method according to any one of claims 1 to 4 are implemented.

Images