A testing method for the corrosion resistance of steel wire ropes

Abstract

The present invention discloses a method for testing the corrosion resistance of steel wire ropes, which relates to the technical field of steel wire rope testing. The corrosion resistance test of the steel wire ropes for production and processing includes the following steps: obtaining a salt spray corrosion test data set of the steel wire rope samples, and analyzing the salt spray corrosion test data set of the steel wire rope samples to obtain the steel wire rope samples that pass the salt spray test; obtaining a soaking corrosion test data set of the steel wire rope samples that pass the salt spray test, and analyzing the soaking corrosion test data set of the steel wire rope samples to obtain the steel wire rope samples that pass the soaking test; obtaining an electrochemical corrosion test data set of the steel wire rope samples that pass the soaking test, and analyzing the electrochemical corrosion test data set of the steel wire rope samples to obtain the steel wire rope samples that pass the electrochemical corrosion test. It has the advantage of being able to comprehensively evaluate the corrosion resistance of steel wire ropes in different corrosion environments.

Description

[0001] This application is a divisional application of the application filed on September 10, 2024, with the application number 202411261941.0 and the invention title "A Test Method for the Corrosion Resistance of Steel Wire Ropes for Production and Processing". Technical Field

[0002] The present invention relates to the technical field of steel wire rope testing, and specifically to a test method for the corrosion resistance of steel wire ropes. Background Art

[0003] During the production and processing of steel wire ropes, in order to ensure good corrosion resistance during use, corresponding corrosion resistance tests need to be carried out. Intergranular corrosion is a type of local corrosion that occurs along the grain boundaries of metal materials in specific corrosive media. This corrosion causes the loss of bonding force between grains without any change on the surface of the metal (alloy), resulting in a complete loss of metal strength and sudden failure. If stress exists, it will transform from intergranular corrosion to intergranular stress corrosion failure. When stainless steel is corroded by a sulfuric acid - copper sulfate solution, carbon in the stainless steel forms chromium carbides such as Cr 23 C6 and precipitates along the grain boundaries, causing local chromium depletion around the carbides and resulting in intergranular corrosion, that is, the "intergranular chromium depletion theory", indicating that the corrosion resistance of stainless steel is weak, and it is very likely that the chromium content in the stainless steel is low or the carbon content is high, etc. The depletion theory believes that intergranular corrosion is due to the precipitation of new phases at the grain boundaries, causing partial or complete supersaturated carbon in the stainless steel to precipitate in the form of Cr 23 C6 at the grain boundaries, resulting in a sharp drop in the concentrations of carbon and chromium near the carbides, forming a chromium-depleted zone at the grain boundaries and causing depletion of a certain component near the grain boundaries. The chromium-depleted zone acts as an anode and is corroded. And the essence of this test method is to detect the ability of stainless steel wire ropes to resist intergranular corrosion, and to see the impact on the overall mechanical properties of the entire stainless steel wire rope through intergranular corrosion. Therefore, it is very necessary to detect the corrosion resistance of stainless steel wire ropes.

[0004] For example, Chinese Patent with the publication number CN115201097A applied for a test method for the corrosion resistance of stainless steel wire ropes, which proposed to obtain whether the corrosion resistance of stainless steel wire ropes is good by comparing the fracture morphologies of mechanical properties before and after corrosion. After sensitizing the stainless steel wire ropes and then conducting a sulfuric acid - copper sulfate corrosion test, the ability of the stainless steel wire ropes to resist intergranular corrosion is detected. Intergranular corrosion in stainless steel has a direct relationship with chromium elements. If the chromium element content is low, the corrosion resistance decreases. After corrosion by the sulfuric acid - copper sulfate solution, chromium carbides (Cr 23 C6) will precipitate at the grain boundaries, causing a chromium-depleted zone around it. The chromium-depleted zone acts as an anode and is corroded, affecting the bonding force at the grain boundaries and thus affecting the overall mechanical properties of the stainless steel wire rope, ensuring the accuracy of the overall test detection.

[0005] Wire ropes may face various corrosion forms in different environments. In the prior art, the corrosion resistance detection of wire ropes by analyzing chromides is too single and not comprehensive enough. Therefore, it is difficult for the prior art to comprehensively evaluate the true corrosion resistance of wire ropes. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for testing the corrosion resistance of wire ropes, which solves the problem that in the prior art, the corrosion resistance detection of wire ropes by analyzing chromides is too single and not comprehensive enough. Therefore, it is difficult for the prior art to comprehensively evaluate the true corrosion resistance of wire ropes.

[0007] To achieve the above object, the present invention is realized by the following technical solutions: A method for testing the corrosion resistance of wire ropes, comprising the following steps: obtaining a salt spray corrosion test data set of wire rope samples, and analyzing the salt spray corrosion test data set of wire rope samples to obtain wire rope samples that pass the salt spray test; obtaining a wire rope sample immersion corrosion test data set of the wire rope samples that pass the salt spray test, and analyzing the wire rope sample immersion corrosion test data set to obtain wire rope samples that pass the immersion test; obtaining a wire rope sample electrochemical corrosion test data set of the wire rope samples that pass the immersion test, and analyzing the wire rope sample electrochemical corrosion test data set to obtain wire rope samples that pass the electrochemical corrosion test, and making a quality qualification mark on the wire rope samples that pass the electrochemical corrosion test.

[0008] Further, the salt spray corrosion test data set of the wire rope samples includes the ratio of the salt spray corrosion area to the non-salt spray corrosion area, the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of the salt spray corrosion spots; the specific analysis process for obtaining the salt spray corrosion test data set of the wire rope samples is as follows: obtaining a salt spray corrosion image of the salt spray corrosion area of the wire rope samples; analyzing the salt spray corrosion image to obtain the ratio of the salt spray corrosion area to the non-salt spray corrosion area, the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of the salt spray corrosion spots.

[0009] Further, the process of specifically analyzing the steel wire rope samples that pass the salt spray test is as follows: The salt spray corrosion test parameter dataset of the steel wire rope samples stored in the database is fused and analyzed with the salt spray corrosion test dataset of the steel wire rope samples to obtain the salt spray corrosion test index of the steel wire rope samples; The salt spray corrosion test index of the steel wire rope samples is compared with the salt spray corrosion test threshold of the steel wire rope samples stored in the database; If the salt spray corrosion test index of the steel wire rope samples is less than or equal to the salt spray corrosion test threshold of the steel wire rope samples stored in the database, the salt spray test of the steel wire rope samples is qualified; If the salt spray corrosion test index of the steel wire rope samples is greater than the salt spray corrosion test threshold of the steel wire rope samples stored in the database, the salt spray test of the steel wire rope samples is unqualified.

[0010] Further, the immersion corrosion test dataset of the steel wire rope samples includes the average immersion corrosion depth, the total immersion corrosion area, and the immersion corrosion rate; The process of specifically analyzing the steel wire rope samples that pass the immersion test is as follows: The immersion corrosion test parameter dataset of the steel wire rope samples stored in the database is fused and analyzed with the immersion corrosion test dataset of the steel wire rope samples to obtain the immersion corrosion test index of the steel wire rope samples; The immersion corrosion test index of the steel wire rope samples is compared with the immersion corrosion test threshold of the steel wire rope samples stored in the database; If the immersion corrosion test index of the steel wire rope samples is less than or equal to the immersion corrosion test threshold of the steel wire rope samples stored in the database, the immersion test of the steel wire rope samples is qualified; If the immersion corrosion test index of the steel wire rope samples is greater than the immersion corrosion test threshold of the steel wire rope samples stored in the database, the immersion test of the steel wire rope samples is unqualified.

[0011] Further, the calculation formula for the immersion corrosion index of the steel wire rope samples is as follows:

[0012] ;

[0013] In the formula, is the immersion corrosion index of the steel wire rope samples, is the average immersion corrosion depth, is the reference average immersion corrosion depth stored in the database, is the total immersion corrosion area, is the reference total immersion corrosion area stored in the database, is the immersion corrosion rate, is the reference immersion corrosion rate stored in the database, is the weight factor of the average immersion corrosion depth set in the database, is the weight factor of the total immersion corrosion area set in the database, is the weight factor of the immersion corrosion rate set in the database.

[0014] Furthermore, the electrochemical corrosion property test data set of the wire rope sample includes the electrochemical corrosion transient corrosion current and the electrochemical corrosion cracking potential. The specific analysis process for obtaining the electrochemical corrosion property test data set of the wire rope sample is as follows: Apply a voltage pulse to the wire rope sample to obtain the transient response where the current rapidly rises to the peak value. Analyze the magnitude of the current peak value and the time to reach the peak value to obtain the electrochemical corrosion transient corrosion current. Gradually increase the potential starting from the open circuit potential and obtain the change of the current with the increase of the potential. The potential at which the current suddenly increases with the potential is the electrochemical corrosion cracking potential.

[0015] Furthermore, the process of obtaining the wire rope sample with qualified electrochemical corrosion property test is as follows: Fuse and analyze the electrochemical corrosion property test reference data set of the wire rope sample stored in the database and the electrochemical corrosion property test data set of the wire rope sample to obtain the electrochemical corrosion property test index of the wire rope sample. The electrochemical corrosion property test reference data set of the wire rope sample stored in the database includes the electrochemical corrosion transient corrosion current and the electrochemical corrosion cracking potential. The electrochemical corrosion property test data set of the wire rope sample includes the electrochemical corrosion transient corrosion current and the electrochemical corrosion cracking potential. Compare the electrochemical corrosion property test index of the wire rope sample with the qualified threshold range of the electrochemical corrosion property test of the wire rope sample stored in the database. If the electrochemical corrosion property test index of the wire rope sample falls within the qualified threshold range of the electrochemical corrosion property test of the wire rope sample stored in the database, then the salt spray test of the wire rope sample is qualified. If the electrochemical corrosion property test index of the wire rope sample does not fall within the qualified threshold range of the electrochemical corrosion property test of the wire rope sample stored in the database, then the electrochemical test of the wire rope sample is unqualified.

[0016] Furthermore, the process of fusing and analyzing the electrochemical corrosion property test reference data set of the wire rope sample stored in the database and the electrochemical corrosion property test data set of the wire rope sample to obtain the electrochemical corrosion property test index of the wire rope sample is as follows: Calculate the difference between the electrochemical transient corrosion current and the reference electrochemical transient corrosion current stored in the database to obtain the electrochemical transient corrosion current difference. Calculate the difference between the electrochemical cracking potential and the electrochemical cracking potential stored in the reference database to obtain the electrochemical cracking potential difference. Process the electrochemical transient corrosion current difference and the electrochemical cracking potential difference to obtain the electrochemical corrosion property test index of the wire rope sample.

[0017] Further, after marking the qualified quality of the wire rope samples that passed the electrochemical corrosion test, it also includes: comprehensively processing the salt spray corrosion test data set, immersion corrosion test data set, and electrochemical corrosion test data set of the wire rope samples to obtain a comprehensive index; comparing the comprehensive corrosion index of the wire rope samples with the corrosion grades corresponding to the comprehensive corrosion indexes of each wire rope sample stored in the database to obtain the corrosion grade corresponding to the comprehensive corrosion index of the wire rope samples.

[0018] Further, the formula for the comprehensive index is:

[0019] ;

[0020] In the formula, is the comprehensive corrosion index of the wire rope samples, is the salt spray corrosion index of the wire rope samples, is the immersion corrosion index of the wire rope samples, is the electrochemical corrosion index of the wire rope samples, is the scaling factor of the salt spray corrosion test index stored in the database, is the scaling factor of the immersion corrosion test index stored in the database, is the scaling factor of the electrochemical corrosion test index stored in the database, is the natural constant.

[0021] The present invention has the following beneficial effects:

[0022] The corrosion resistance test method for the wire rope can test the corrosion resistance of the wire rope in the marine or saline-alkali land environment through salt spray corrosion, simulate the corrosion resistance of the wire rope in acid, alkali, and salt solutions through immersion corrosion test, and simulate the corrosion resistance of the wire rope in the electrochemical corrosion environment through electrochemical corrosion test. Thus, it can comprehensively evaluate the corrosion resistance of the wire rope in different corrosion environments, and solves the problem that the existing technology is too single and not comprehensive enough to detect the corrosion resistance performance of the wire rope by analyzing chromates.

[0023] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a flowchart of the corrosion resistance test method for the wire rope of the present invention.

[0025] Figure 2 is an image of the evaluation value of the electrochemical corrosion index changing with the difference in electrochemical transient corrosion current of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] The embodiment of the present application solves the problem that the prior art is too single and not comprehensive enough to detect the corrosion resistance of steel wire ropes by analyzing chromides. Therefore, it is difficult for the prior art to comprehensively evaluate the true corrosion resistance of steel wire ropes through a steel wire rope corrosion resistance test method.

[0027] The general idea for solving the problems in the embodiments of the present application is as follows:

[0028] First, put the steel wire rope sample into a salt spray test chamber for salt spray corrosion test to obtain salt spray corrosion data. Immerse the steel wire rope sample suitable for the salt spray corrosion test in an acidic solution for immersion test to obtain immersion test data. Then, perform electrochemical corrosion test on the steel wire rope sample qualified in the immersion test to obtain electrochemical corrosion test data. Finally, comprehensively process the salt spray corrosion test data set, immersion corrosion test data set, and electrochemical corrosion test data set of the steel wire rope sample to determine the corrosion grade of the steel wire rope sample.

[0029] Please refer to Figure 1 The embodiment of the present invention provides a technical solution: a method for testing the corrosion resistance of a steel wire rope, including the following steps: obtaining a salt spray corrosion test data set of the steel wire rope sample and analyzing the salt spray corrosion test data set of the steel wire rope sample to obtain a steel wire rope sample qualified in the salt spray test; obtaining an immersion corrosion test data set of the steel wire rope sample qualified in the salt spray test and analyzing the immersion corrosion test data set of the steel wire rope sample to obtain a steel wire rope sample qualified in the immersion test; obtaining an electrochemical corrosion test data set of the steel wire rope sample qualified in the immersion test and analyzing the electrochemical corrosion test data set of the steel wire rope sample to obtain a steel wire rope sample qualified in the electrochemical corrosion test, and making a quality qualification mark on the steel wire rope sample qualified in the electrochemical corrosion test.

[0030] Specifically, the salt spray corrosion test data set of the steel wire rope sample includes the ratio of the salt spray corrosion area to the non-salt spray corrosion area, the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of the salt spray corrosion spots. The specific analysis process for obtaining the salt spray corrosion test data set of the steel wire rope sample is as follows: obtaining a salt spray corrosion image of the salt spray corrosion area of the steel wire rope sample; analyzing the salt spray corrosion image to obtain the ratio of the salt spray corrosion area to the non-salt spray corrosion area, the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of the salt spray corrosion spots.

[0031] In this implementation, first, place the wire rope sample in a salt spray test chamber and expose it for a predetermined time. Then, use a digital camera or a scanning electron microscope to capture high-definition images of the surface area of the corroded wire rope sample, ensuring that the images are clear and the corroded area and the non-corroded area can be clearly distinguished. These images show the visualization effects caused by corrosion, the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the salt spray corrosion size distribution. Use image processing software (such as Adobe Photoshop, ImageJ, or other professional material analysis software) to analyze the salt spray corrosion images of the salt spray corrosion area of the wire rope sample, and use image segmentation technology to calculate the area ratio of the corroded area to the non-corroded area. The salt spray corrosion coverage rate is measured by using professional material analysis software tools such as the ImageJ image processing program and Adobe Photoshop image editing software to measure the total area of the wire rope sample and the area covered by corrosion. Divide the area of the corroded area of the wire rope sample by the total area, and then multiply by 100 to obtain the percentage of the salt spray corrosion coverage rate of the wire rope sample. The number of salt spray corrosion spots is identified and marked for each independent corrosion spot by using image analysis tools (such as the image processing toolbox in ImageJ or MATLAB). Use the particle size analysis function of the image analysis tool to automatically calculate the number of identified corrosion spots, and automatically identify and measure the area of each corrosion spot. Accumulate the areas of all corrosion spots to obtain the total area of the salt spray corrosion spots.

[0032] Specifically, for the wire rope sample that passes the salt spray test, the specific analysis process is as follows: fuse and analyze the salt spray corrosion test parameter dataset of the wire rope sample stored in the database and the salt spray corrosion test dataset of the wire rope sample to obtain the salt spray corrosion test index of the wire rope sample; compare the salt spray corrosion test index of the wire rope sample with the salt spray corrosion test threshold stored in the database; if the salt spray corrosion test index of the wire rope sample is less than or equal to the salt spray corrosion test threshold stored in the database, then the salt spray test of the wire rope sample is qualified; if the salt spray corrosion test index of the wire rope sample is greater than the salt spray corrosion test threshold stored in the database, then the salt spray test of the wire rope sample is unqualified.

[0033] In this implementation, first, obtain the reference salt spray corrosion data of the wire rope sample in the salt spray corrosion environment through historical data. These data are from previous tests. The reference salt spray corrosion data of the wire rope sample include the reference salt spray corrosion coverage rate, the reference number of salt spray corrosion spots, and the total reference area of the salt spray corrosion spots. By selecting the historical data of the salt spray corrosion tests of different batches of wire rope samples, calculate the average value of the salt spray corrosion coverage rate, the average value of the number of salt spray corrosion spots, and the average value of the total area of the salt spray corrosion spots of all wire rope samples to obtain the reference salt spray corrosion data of the wire rope sample.

[0034] Compare the salt spray corrosion test data of the actually obtained wire rope samples with the specified corrosion data to calculate the salt spray corrosion test index of the wire rope samples. The salt spray corrosion test index of the wire rope samples includes the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots. The salt spray corrosion index of the wire rope samples indicates the matching degree between the actual corrosion degree of the wire rope samples and the pre-specified data. Compare the salt spray corrosion test index of the wire rope samples with the salt spray corrosion test threshold set in the database. Determine whether the salt spray corrosion test of the wire rope samples is qualified according to the comparison result. If the salt spray corrosion test index of the wire rope samples is less than or equal to the salt spray corrosion test threshold of the wire rope samples stored in the database, the salt spray test of the wire rope samples is qualified. If the salt spray corrosion test index of the wire rope samples is greater than the salt spray corrosion test threshold of the wire rope samples stored in the database, the salt spray test of the wire rope samples is unqualified.

[0035] For the salt spray corrosion test threshold set in the database, a large amount of historical salt spray corrosion test data of wire ropes can be collected, their distribution characteristics can be analyzed, and by calculating statistical parameters of the historical data, such as the mean, standard deviation, etc., the set value can be determined as the mean plus a certain multiple of the standard deviation to determine the threshold.

[0036] The calculation formula for obtaining the salt spray corrosion index of the wire rope samples is as follows (all parameters are made dimensionless before calculation to remove the units):

[0037] ;

[0038] In the formula, is the salt spray corrosion index of the wire rope samples, is the salt spray corrosion coverage rate, is the specified salt spray corrosion coverage rate stored in the database, is the number of salt spray corrosion spots, is the specified number of salt spray corrosion spots stored in the database, is the total area of salt spray corrosion spots, is the specified total area of salt spray corrosion spots stored in the database, is the weight factor of the salt spray corrosion coverage rate set in the database, is the weight factor of the number of salt spray corrosion spots set in the database, is the weight factor of the total area of salt spray corrosion spots set in the database, is the index factor for adjusting the influence of salt spray corrosion coverage stored in the database, is the index factor for adjusting the influence of the number of salt spray corrosion spots stored in the database, is the index factor for adjusting the influence of the total area of salt spray corrosion spots stored in the database.

[0039] The formula smooths extreme values through logarithmic transformation of the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the proportion of the total area of salt spray corrosion spots. This helps to reduce the impact of individual abnormal data on the overall evaluation result. The logarithmic transformation also improves the stability and robustness of the model when facing different magnitudes of values. The salt spray corrosion coverage rate describes the proportion of the area covered by the salt spray corrosion on the wire rope sample after the salt spray corrosion test. This ratio reflects the severity of the damage on the surface of the wire rope sample. The number of salt spray corrosion spots is the total number of visible corrosion spots on the surface of the wire rope sample after the salt spray corrosion test. The number of spots can provide information about the corrosion distribution. The total area of salt spray corrosion spots is the total area covered by all the corrosion spots on the wire rope sample after the salt spray corrosion test. This measurement quantifies the actual impact of corrosion on the material surface. The weight factor , , is adjusted according to the importance of the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots on the integrity and functionality of the wire rope sample. The setting of the weight factor takes into account the measurement precision of the parameters, the mutual relationship and comprehensive influence among different parameters. By introducing the exponents , , are the non-linear response exponents corresponding to the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots. Such non-linear processing helps to balance the influence of various corrosion indicators and prevent the excessive impact of extreme values on the overall evaluation result.

[0040] Based on the evaluation values of the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots from historical measurements, a mapping set of the salt spray corrosion coverage rate, the number of salt spray corrosion spots, the total area of salt spray corrosion spots, and their corresponding weight factors is established. Input the current salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots into this mapping set to obtain the weight factors corresponding to the current salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots.

[0041] Based on the evaluation values of the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots from historical measurements, a mapping set of the salt spray corrosion coverage rate, the number of salt spray corrosion spots, the total area of salt spray corrosion spots, and their corresponding exponential factors is established. Input the current salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots into this mapping set to obtain the exponential factors corresponding to the current salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots.

[0042] Specifically, the dataset of the immersion corrosion test of the wire rope sample includes the average immersion corrosion depth, the total immersion corrosion area, and the immersion corrosion rate. The specific analysis process for obtaining the qualified wire rope sample for the immersion test is as follows: The dataset of the immersion corrosion test parameters of the wire rope sample stored in the database is fused and analyzed with the dataset of the immersion corrosion test of the wire rope sample to obtain the immersion corrosion test index of the wire rope sample. The immersion corrosion test index of the wire rope sample is compared with the immersion corrosion test threshold of the wire rope sample stored in the database. If the immersion corrosion test index of the wire rope sample is less than or equal to the immersion corrosion test threshold of the wire rope sample stored in the database, the immersion test of the wire rope sample is qualified. If the immersion corrosion test index of the wire rope sample is greater than the immersion corrosion test threshold of the wire rope sample stored in the database, the immersion test of the wire rope sample is unqualified.

[0043] In this implementation plan, the reference immersion corrosion data of the wire rope sample in the immersion corrosion environment is obtained through historical data. These data are from previous tests. The reference immersion corrosion data of the wire rope sample includes the average reference immersion corrosion depth, the total reference immersion corrosion area, and the reference immersion corrosion rate. By selecting the historical data of the salt spray corrosion test of different batches of wire rope samples, the average value of the average immersion corrosion depth, the average value of the total immersion corrosion area, and the average value of the total immersion corrosion rate of all wire rope samples are calculated to obtain the reference immersion corrosion data of the wire rope sample.

[0044] The immersion corrosion test data of the actually obtained wire rope sample is compared with the reference corrosion data to calculate the immersion corrosion test index of the wire rope sample. The immersion corrosion test index of the wire rope sample includes the average immersion corrosion depth, the total immersion corrosion area, and the immersion corrosion rate. The immersion corrosion index of the wire rope sample indicates the matching degree between the actual corrosion degree of the wire rope sample and the pre - reference data. The immersion corrosion test index of the wire rope sample is compared with the set immersion corrosion test threshold in the database. According to the comparison result, it is determined whether the immersion corrosion test of the wire rope sample is qualified. If the immersion corrosion test index of the wire rope sample is less than or equal to the immersion corrosion test threshold of the wire rope sample stored in the database, the immersion test of the wire rope sample is qualified. If the immersion corrosion test index of the wire rope sample is greater than the salt immersion corrosion test threshold of the wire rope sample stored in the database, the immersion test of the wire rope sample is unqualified.

[0045] For the immersion corrosion test threshold set in the database, a large amount of historical immersion corrosion test data can be collected. Then, descriptive statistical analysis (such as calculating the mean, median, standard deviation) and inferential statistical techniques (such as confidence intervals and hypothesis testing) are used to analyze the distribution and variability of the data. Based on these analysis results, the threshold is determined.

[0046] Specifically, the calculation formula for the immersion corrosion index of the wire rope sample is as follows (all parameters are made dimensionless before calculation, removing the units):

[0047] ;

[0048] In the formula, is the immersion corrosion index of the wire rope sample, is the average immersion corrosion depth, is the reference average immersion corrosion depth stored in the database, is the total immersion corrosion area, is the reference total immersion corrosion area stored in the database, is the immersion corrosion rate, is the reference immersion corrosion rate stored in the database, is the weight factor of the average immersion corrosion depth set in the database, is the weight factor of the total immersion corrosion area set in the database, is the weight factor of the immersion corrosion rate set in the database.

[0049] In this embodiment, by integrating multiple corrosion data such as the average immersion corrosion depth, the total immersion corrosion area, and the immersion corrosion rate, this comprehensive evaluation method can comprehensively consider various corrosion factors that the material may encounter in actual applications, and can more accurately reflect the overall corrosion resistance of the material than relying on a single corrosion parameter. For example: the average immersion corrosion depth indicates the degree of penetration of corrosion into the material structure, which is crucial for structural integrity. The total immersion corrosion area shows the extent of corrosion and can reflect the effect of the corrosion protection layer. The immersion corrosion rate provides information on the rate of corrosion development, which is crucial for predicting future corrosion trends and potential risks. An index that combines multiple immersion corrosion parameters such as the average immersion corrosion depth, the total immersion corrosion area, and the immersion corrosion rate can more accurately evaluate the corrosion risk of the material under specific environmental conditions.

[0050] Based on the evaluation values of the average immersion corrosion depth, the total immersion corrosion area, and the immersion corrosion rate measured historically, establish a mapping set of the average immersion corrosion depth, the total immersion corrosion area, the immersion corrosion rate, and their corresponding weight factors. Input the current average immersion corrosion depth, the total immersion corrosion area, and the immersion corrosion rate into this mapping set to obtain the weight factors corresponding to the current average immersion corrosion depth, the total immersion corrosion area, and the immersion corrosion rate.

[0051] It should be noted that the greater the average immersion corrosion depth, the greater the evaluation value of the immersion corrosivity index, indicating that the functionality of the wire rope sample detected by the detection system is better. As the average immersion corrosion depth increases, the influence of the average immersion corrosion depth on the evaluation value of the immersion corrosivity index gradually weakens. The weight factor of the average immersion corrosion depth remains unchanged at 0.4, the total immersion corrosion area remains unchanged at 120, the weight factor of the total immersion corrosion area remains unchanged at 0.3, the immersion corrosion rate remains unchanged at 0.03, the weight factor of the immersion corrosion rate remains unchanged at 0.3, the reference depth of the average immersion corrosion remains unchanged at 0.5, the reference total immersion corrosion area remains unchanged at 150, and the reference immersion corrosion rate remains unchanged at 0.05. The example values of the average immersion corrosion depth are as follows:

[0052] Table 1: Example values of the average immersion corrosion depth in the evaluation value of the immersion corrosivity index

[0053]

[0054] Specifically, the electrochemical corrosivity test data set of the wire rope sample includes the electrochemical corrosion transient corrosion current and the electrochemical corrosion cracking potential. The specific analysis process for obtaining the electrochemical corrosivity test data set of the wire rope sample is as follows: Apply a voltage pulse to the wire rope sample to obtain the transient response in which the current rapidly rises to the peak value, and analyze the magnitude of the current peak value and the time to reach the peak value to obtain the electrochemical corrosion transient corrosion current; Gradually increase the potential starting from the open circuit potential and obtain the change of the current with the increase of the potential. The potential at which the current suddenly increases with the potential is the electrochemical corrosion cracking potential.

[0055] In this implementation plan, the transient corrosion current test is carried out by applying a short voltage pulse to the wire rope sample and measuring its current response. This test reflects the immediate response ability of the wire rope sample in a rapidly changing corrosion environment. The peak current and response time recorded during the test can provide indicators of the sensitivity and response speed of the wire rope sample to corrosion stimuli. By analyzing the magnitude of the transient current and the response time, the corrosion dynamic characteristics of the wire rope sample can be evaluated. A higher current response indicates that the wire rope sample may be more vulnerable to corrosion attacks, while a rapid response time may indicate the intensity of the corrosion process. The breakdown potential test is performed by gradually increasing the potential of the wire rope sample and recording the change in current with the increase in potential. This test aims to find the potential point at which the current suddenly increases, which is defined as the breakdown potential. The breakdown potential is a key indicator marking the transition of the wire rope sample from a passive state to an active corrosion state, reflecting the stability and corrosion resistance of the wire rope sample in a specific electrochemical environment. By determining the breakdown potential, the corrosion protection ability of the wire rope sample at different potentials can be evaluated. A low breakdown potential may indicate that the wire rope sample starts to undergo rapid corrosion at a lower potential, suggesting poor corrosion resistance. Through the combined analysis of the transient corrosion current and the breakdown potential, the corrosion behavior of the wire rope in the electrochemical environment can be comprehensively evaluated. This comprehensiveness helps to formulate more effective anti-corrosion strategies and select more suitable materials or coatings. Accurate electrochemical test data can guide the manufacturing and maintenance processes to ensure the reliability and long-term performance of wire rope products, especially in corrosive environments such as marine or chemical industrial sites.

[0056] Specifically, the process of obtaining a wire rope sample that passes the electrochemical corrosion test is as follows: The dataset of the electrochemical corrosion test parameters of the wire rope samples stored in the database is fused and analyzed with the dataset of the electrochemical corrosion test of the wire rope samples to obtain the electrochemical corrosion test index of the wire rope samples. The dataset of the electrochemical corrosion test parameters of the wire rope samples stored in the database includes the transient corrosion current of electrochemical corrosion and the breakdown potential of electrochemical corrosion. The dataset of the electrochemical corrosion test of the wire rope samples includes the transient corrosion current of electrochemical corrosion and the breakdown potential of electrochemical corrosion. The electrochemical corrosion test index of the wire rope samples is compared with the qualified threshold range of the electrochemical corrosion test of the wire rope samples stored in the database. If the electrochemical corrosion test index of the wire rope samples falls within the qualified threshold range of the electrochemical corrosion test of the wire rope samples stored in the database, the wire rope sample passes the salt spray test. If the electrochemical corrosion test index of the wire rope samples does not fall within the qualified threshold range of the electrochemical corrosion test of the wire rope samples stored in the database, the wire rope sample fails the electrochemical test.

[0057] In this implementation plan, by combining and analyzing the reference dataset of the electrochemical corrosion test of the wire rope sample with the newly obtained electrochemical corrosion test dataset, the reference dataset of the electrochemical corrosion test is sourced from historical data. By selecting the historical data of the electrochemical corrosion test of wire rope samples from different batches, the average value of the transient corrosion current of the electrochemical corrosion of all wire rope samples and the average value of the electrochemical corrosion cracking potential are calculated to obtain the reference electrochemical corrosion data of the wire rope samples. A corrosion test index is calculated through comprehensive analysis of the data of the transient corrosion current and the cracking potential. This index comprehensively reflects the electrochemical corrosion performance of the sample. An electrochemical corrosion test threshold is set in the database, and the calculated corrosion test index is compared with the set electrochemical corrosion test threshold range in the database to determine whether the index falls within the qualified range. If the corrosion test index is within the qualified threshold range, the sample is determined to be qualified; if not, it is determined to be unqualified.

[0058] For the electrochemical corrosion test threshold set in the database, by collecting a certain amount of historical data of the electrochemical corrosion test, the distribution characteristics of the data are determined by applying descriptive statistical analysis, and inferential statistical techniques (such as confidence intervals and hypothesis testing) are used to determine the statistical significance threshold of key corrosion parameters. This threshold can be set based on the minimum acceptable performance standard of the wire rope sample in a predetermined environment, so as to ensure the scientificity and reliability of the electrochemical corrosion test results.

[0059] Specifically, the process of fusing and analyzing the reference dataset of the electrochemical corrosion test of the wire rope samples stored in the database with the electrochemical corrosion test dataset of the wire rope samples to obtain the electrochemical corrosion test index of the wire rope samples is as follows: Calculate the difference between the electrochemical transient corrosion current and the reference electrochemical transient corrosion current stored in the database to obtain the electrochemical transient corrosion current difference; Calculate the difference between the electrochemical cracking potential and the electrochemical cracking potential stored in the reference database to obtain the electrochemical cracking potential difference; Process the electrochemical transient corrosion current difference and the electrochemical cracking potential difference to obtain the electrochemical corrosion test index of the wire rope samples.

[0060] In this implementation, during the electrochemical corrosion test, the wire rope sample is exposed to specific voltage pulses, and the instantaneous current changes of the wire rope sample under the action of the voltage pulses are recorded, which includes the peak value of the current and its change rate. The peak value of the transient corrosion current of the sample is compared with the reference transient corrosion current peak value, and the difference between the two is calculated. By measuring and analyzing the difference in the transient corrosion current, the sensitivity of the wire rope sample to electrochemical stimuli can be quantified. In the electrochemical test, first, an initial potential is set, usually the open-circuit potential, and then the potential is gradually increased while recording the current response of the sample. The breakdown potential is the point at which the current suddenly increases significantly in this series of potentials. This marks the breakdown of the corrosion layer on the material surface and the acceleration of the corrosion process. The measured breakdown potential is compared with the reference breakdown potential, and the difference between the measured breakdown potential and the reference breakdown potential is calculated. This difference reflects the corrosion stability of the material relative to the standard or expected performance. By analyzing the breakdown potential differences of different wire rope samples, it is possible to identify which wire rope samples are more stable in a specific corrosion environment, thereby guiding the selection of wire ropes and the optimization of surface treatment processes.

[0061] The calculation formula for the electrochemical corrosion index of the wire rope sample is as follows (all parameters are made dimensionless before calculation, removing the units):

[0062] ;

[0063] In the formula, is the electrochemical corrosion index of the wire rope sample, is the difference in electrochemical transient corrosion current, is the difference in electrochemical breakdown potential, is the weight factor of the electrochemical corrosion transient corrosion current set in the database, is the weight factor of the electrochemical corrosion breakdown potential set in the database.

[0064] It should be noted that taking the square root of the transient corrosion current is to reduce the excessive influence of large-value currents on the overall index. This treatment makes the contribution of the increase in the current value to the index grow at a decreasing rate, making the index more sensitive to changes in the current within a small range. This helps to detect imperceptible corrosion changes in the data, especially when the current changes are small. The design of this formula allows for the adjustment of weights and reference values according to different test conditions and material characteristics, enabling it to be flexibly applied to various different environments and materials. The weight factors and can be adjusted according to the experimental design and purpose to optimize and obtain the most meaningful corrosion evaluation.

[0065] Based on the evaluation values in the electrochemical transient corrosion current difference and electrochemical breakdown potential difference measured historically, establish a mapping set of the electrochemical transient corrosion current difference, electrochemical breakdown potential difference, and their corresponding weighting factors. Input the current electrochemical transient corrosion current difference and electrochemical breakdown potential difference into this mapping set to obtain the weighting factors corresponding to the current electrochemical transient corrosion current difference and electrochemical breakdown potential difference.

[0066] As Figure 2 shown, it is an image of the evaluation value of the electrochemical corrosivity index changing with the electrochemical transient corrosion current difference. The x-axis represents the electrochemical transient corrosion current difference, and the y-axis represents the evaluation value of the electrochemical corrosivity index, which can help intuitively understand how the electrochemical transient corrosion current difference affects the evaluation value of the electrochemical corrosivity index. The larger the electrochemical transient corrosion current difference, the larger the evaluation value of the electrochemical corrosivity index, indicating that the functionality of the wire rope sample detected by the detection system is better. As the electrochemical transient corrosion current difference increases, the influence of the electrochemical transient corrosion current difference on the evaluation value of the electrochemical corrosivity index gradually weakens. The electrochemical breakdown potential difference remains unchanged at 0.05, the weighting factor of the electrochemical corrosion transient corrosion current remains unchanged at 0.6, and the weighting factor of the electrochemical corrosion breakdown potential remains unchanged at 0.4. Example values of the chemical transient corrosion current difference are as follows:

[0067] Table 2: Example values of the electrochemical transient corrosion current difference in the evaluation value of the electrochemical corrosivity index

[0068]

[0069] Specifically, after marking the wire rope samples that pass the electrochemical corrosivity test as qualified, it also includes: comprehensively processing the salt spray corrosivity test dataset, immersion corrosivity test dataset, and electrochemical corrosivity test dataset of the wire rope samples to obtain a comprehensive index; comparing the corrosion comprehensive index of the wire rope samples with the corrosion grades corresponding to the corrosion comprehensive indexes of each wire rope sample stored in the database to obtain the corrosion grade corresponding to the corrosion comprehensive index of this wire rope sample.

[0070] In this implementation, first, data from three different corrosion tests, namely salt spray, immersion, and electrochemistry, are collected. Each test provides information on the performance of the material in a specific corrosion environment. A comprehensive calculation method (such as arithmetic mean, weighted mean, or a more complex mathematical model) is used to aggregate the results of various tests into a single comprehensive corrosion index. This index reflects the overall corrosion resistance of the material in multiple environments. According to industry standards or empirical regulations, different corrosion grades are set. The setting of grades can be based on previous experimental data and relevant standards. These grade thresholds are recorded and stored in a centralized database. Each threshold corresponds to a range of one or a group of comprehensive indices. These data are used to compare with the newly measured comprehensive corrosion index of the wire rope sample. The comprehensive corrosion index of the wire rope sample obtained by calculation is compared with the corrosion grade thresholds stored in the database, and the comparison process determines the corrosion grade of the sample.

[0071] Specifically, the formula for the comprehensive index is as follows:

[0072] ;

[0073] In the formula, is the comprehensive corrosion index of the wire rope sample, is the salt spray corrosion index of the wire rope sample, is the immersion corrosion index of the wire rope sample, is the electrochemistry corrosion index of the wire rope sample, is the scaling factor of the salt spray corrosion test index stored in the database, is the scaling factor of the immersion corrosion test index stored in the database, is the scaling factor of the electrochemistry corrosion test index stored in the database, is the natural constant.

[0074] In this implementation, for each corrosion test result, for salt spray corrosion , immersion corrosion , and electrochemistry corrosion , first add one and then take the natural logarithm. When the corrosion test result is very large, the original value may cause numerical problems in calculation or comparison. The logarithmic transformation helps avoid these problems by reducing the impact of large values (because the growth rate of the logarithmic function is slower than linear growth), while maintaining sensitivity to small values. This enables the test results to be effectively compared over a wide range. The logarithmic transformation can unify the scale of corrosion data, making the results between different tests comparable more fairly. This is crucial for integrating multiple test data. By reducing the influence of extreme values, the logarithmic transformation helps highlight moderate changes that may not be so obvious on the original scale. Through different scaling factors , , The formula assigns different importance to each corrosion test index. These scaling factors can be adjusted according to the reliability and actual impact of the corrosion test index, making the model more flexible in application. Using the exponential function is to enhance the interaction between corrosion indicators and provide a non-linear response. Such a design makes the overall corrosion index highly sensitive to significant changes in any one indicator, so that higher corrosion risks can be reflected in the comprehensive evaluation.

[0075] Based on the evaluation values of the salt spray corrosion index, immersion corrosion index, and electrochemical corrosion index of the wire rope samples measured historically, a mapping set of the evaluation values of the salt spray corrosion index, immersion corrosion index, and electrochemical corrosion index of the wire rope samples and their corresponding scaling factors is established. Input the current evaluation values of the salt spray corrosion index, immersion corrosion index, and electrochemical corrosion index of the wire rope samples into this mapping set to obtain the scaling factors corresponding to the current evaluation values of the salt spray corrosion index, immersion corrosion index, and electrochemical corrosion index of the wire rope samples.

[0076] In summary, the present application has at least the following effects:

[0077] The salt spray corrosion can be used to test the corrosion resistance of wire ropes in marine or saline-alkali land environments, the immersion corrosion test can simulate the corrosion resistance of wire ropes in acid, alkali, and salt solutions, and the electrochemical corrosion test can simulate the corrosion resistance of wire ropes in electrochemical corrosion environments. Therefore, the corrosion resistance of wire ropes in different corrosion environments can be comprehensively evaluated, solving the problem that the existing technology for detecting the corrosion resistance of wire ropes by analyzing chromates is too single and not comprehensive enough. Therefore, it is difficult for the existing technology to comprehensively evaluate the true corrosion resistance of wire ropes.

[0078] Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can 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.

[0079] The present invention is described with reference to flowchart illustrations and / or block diagrams of systems, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each flow and / or block in the flowchart illustrations and / or block diagrams, and combinations of flows and / or blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing apparatus create means for implementing the functions specified in the flow Figure 1 one or more flows and / or blocks Figure 1 or means for implementing the functions specified in one or more boxes or blocks.

[0080] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means that implement the functions specified in the flow Figure 1 one or more flows and / or blocks Figure 1 or means for implementing the functions specified in one or more boxes or blocks.

[0081] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in the flow Figure 1 one or more flows and / or blocks Figure 1 or means for implementing the functions specified in one or more boxes or blocks.

[0082] Although the preferred embodiments of the present invention have been described, additional changes and modifications can be made by those skilled in the art once they learn of the basic inventive concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present invention.

[0083] 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 equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A method for testing the corrosion resistance of steel wire ropes, characterized in that, It includes the following steps: Obtain the salt spray corrosion test data set of wire rope samples, and analyze the salt spray corrosion test data set of wire rope samples to obtain wire rope samples that pass the salt spray test; Obtain the immersion corrosion test data set of wire rope samples that pass the salt spray test, and analyze the immersion corrosion test data set of wire rope samples to obtain wire rope samples that pass the immersion test; Obtain the electrochemical corrosion test data set of wire rope samples that pass the immersion test, and analyze the electrochemical corrosion test data set of wire rope samples to obtain wire rope samples that pass the electrochemical corrosion test, and mark the wire rope samples that pass the electrochemical corrosion test as qualified in terms of quality; After marking the wire rope samples that pass the electrochemical corrosion test as qualified in terms of quality, it further includes: Comprehensively process the salt spray corrosion test data set of wire rope samples, the immersion corrosion test data set of wire rope samples, and the electrochemical corrosion test data set of wire rope samples to obtain a comprehensive index; Compare the comprehensive corrosion index of the wire rope sample with the corrosion grades corresponding to the comprehensive corrosion indexes of each wire rope sample stored in the database to obtain the corrosion grade corresponding to the comprehensive corrosion index of the wire rope sample; The formula for the comprehensive index is: ； Wherein, is the comprehensive corrosion index of the wire rope sample, is the salt spray corrosion index of the wire rope sample, is the immersion corrosion index of the wire rope sample, is the electrochemical corrosion index of the wire rope sample, is the scaling factor of the salt spray corrosion test index stored in the database, is the scaling factor of the immersion corrosion test index stored in the database, is the scaling factor of the electrochemical corrosion test index stored in the database, is the natural constant; Based on the evaluation values in the salt spray corrosion index of wire rope samples, the immersion corrosion index of wire rope samples, and the electrochemical corrosion index of wire rope samples measured historically, establish a mapping set of the evaluation values in the salt spray corrosion index of wire rope samples, the immersion corrosion index of wire rope samples, and the electrochemical corrosion index of wire rope samples and their corresponding scaling factors, and input the current evaluation values in the salt spray corrosion index of wire rope samples, the immersion corrosion index of wire rope samples, and the electrochemical corrosion index of wire rope samples into this mapping set to obtain the scaling factors corresponding to the current evaluation values in the salt spray corrosion index of wire rope samples, the immersion corrosion index of wire rope samples, and the electrochemical corrosion index of wire rope samples; The calculation formula for the salt spray corrosion index of wire rope samples is as follows. Before calculation, perform scalar processing on all parameters to remove the units: ； In the formula, is the salt spray corrosion index of the wire rope sample, is the salt spray corrosion coverage rate, is the salt spray corrosion calibration coverage rate stored in the database, is the number of salt spray corrosion spots, is the number of salt spray corrosion calibration spots stored in the database, is the total area of the salt spray corrosion spots, is the total area of the salt spray corrosion calibration spots stored in the database, is the weight factor of the salt spray corrosion coverage rate set in the database, is the weight factor of the number of salt spray corrosion spots set in the database, is the weight factor of the total area of the salt spray corrosion spots set in the database, is the exponential factor for adjusting the influence of salt spray corrosion coverage stored in the database, is the exponential factor for adjusting the influence of the number of salt spray corrosion spots stored in the database, is the exponential factor for adjusting the influence of the total area of the salt spray corrosion spots stored in the database; The calculation formula for the immersion corrosion index of the wire rope sample is as follows: ； Wherein, is the corrosion index of the steel wire rope sample after immersion, is the average immersion corrosion depth, is the reference average immersion corrosion depth stored in the database, is the total immersion corrosion area, is the reference total immersion corrosion area stored in the database, is the immersion corrosion rate, is the reference immersion corrosion rate stored in the database, is the weight factor of the average immersion corrosion depth set in the database, is the weight factor of the total immersion corrosion area set in the database, is the weight factor of the immersion corrosion rate set in the database; The calculation formula for the electrochemical corrosion index of wire rope samples is as follows. Before calculation, perform scalar processing on all parameters to remove the units: ； In the formula, is the electrochemical corrosion index of the wire rope sample, is the difference in electrochemical transient corrosion current, is the difference in electrochemical breakdown potential, is the weight factor of the electrochemical corrosion transient corrosion current set in the database, is the weight factor of the electrochemical corrosion breakdown potential set in the database; The electrochemical corrosion test data set of the wire rope sample includes the transient corrosion current of electrochemical corrosion and the breakdown potential of electrochemical corrosion; The specific analysis process for obtaining the electrochemical corrosion test data set of wire rope samples is: Apply a voltage pulse to the wire rope sample to obtain the transient response in which the current rapidly rises to the peak value, and analyze the magnitude of the current peak value and the time to reach the peak value to obtain the transient corrosion current of electrochemical corrosion; Gradually increase the potential starting from the open circuit potential, and obtain the change of the current with the increase of the potential. The potential at which the current suddenly increases with the potential is the breakdown potential of electrochemical corrosion.

2. The method for testing the corrosion resistance of a steel wire rope according to claim 1, characterized in that: The salt spray corrosion test data set of the wire rope sample includes the ratio of the salt spray corrosion area to the non-salt spray corrosion area, the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of salt spray corrosion spots.

3. The method for testing the corrosion resistance of a steel wire rope according to claim 2, characterized in that: The process of obtaining the salt spray corrosion test data set of the wire rope sample is specifically analyzed as follows: Obtain the salt spray corrosion images of the salt spray corrosion area of the wire rope sample; Analyze the salt spray corrosion images to obtain the ratio of the salt spray corrosion area to the non-salt spray corrosion area, the salt spray corrosion coverage rate, the number of salt spray corrosion spots, and the total area of the salt spray corrosion spots.

4. A method for testing the corrosion resistance of a wire rope according to claim 2, characterized in that: The process of obtaining the wire rope sample that passes the salt spray test is specifically analyzed as follows: Fusion analyze the salt spray corrosion test parameter determination data set of the wire rope sample stored in the database and the salt spray corrosion test data set of the wire rope sample to obtain the salt spray corrosion test index of the wire rope sample; Compare the salt spray corrosion test index of the wire rope sample with the salt spray corrosion test threshold of the wire rope sample stored in the database; If the salt spray corrosion test index of the wire rope sample is less than or equal to the salt spray corrosion test threshold of the wire rope sample stored in the database, the salt spray test of the wire rope sample is qualified; If the salt spray corrosion test index of the wire rope sample is greater than the salt spray corrosion test threshold of the wire rope sample stored in the database, the salt spray test of the wire rope sample is unqualified.

5. A method for testing the corrosion resistance of a steel wire rope according to claim 1, characterized in that: The immersion corrosion test data set of the wire rope sample includes the average immersion corrosion depth, the total immersion corrosion area, and the immersion corrosion rate; The process of obtaining the wire rope sample that passes the immersion test is specifically analyzed as follows: Fusion analyze the immersion corrosion test parameter determination data set of the wire rope sample stored in the database and the immersion corrosion test data set of the wire rope sample to obtain the immersion corrosion test index of the wire rope sample; Compare the immersion corrosion test index of the wire rope sample with the immersion corrosion test threshold of the wire rope sample stored in the database; If the immersion corrosion test index of the wire rope sample is less than or equal to the immersion corrosion test threshold of the wire rope sample stored in the database, the immersion test of the wire rope sample is qualified; If the immersion corrosion test index of the wire rope sample is greater than the immersion corrosion test threshold of the wire rope sample stored in the database, the immersion test of the wire rope sample is unqualified.

6. A method for testing the corrosion resistance of a steel wire rope according to claim 1, characterized in that: The process of obtaining the wire rope sample that passes the electrochemistry corrosion test is as follows: Fusion analyze the electrochemistry corrosion test parameter determination data set of the wire rope sample stored in the database and the electrochemistry corrosion test data set of the wire rope sample to obtain the electrochemistry corrosion test index of the wire rope sample. The electrochemistry corrosion test parameter determination data set of the wire rope sample stored in the database includes the transient corrosion current of electrochemistry corrosion and the cracking potential of electrochemistry corrosion. The electrochemistry corrosion test data set of the wire rope sample includes the transient corrosion current of electrochemistry corrosion and the cracking potential of electrochemistry corrosion; Compare the electrochemistry corrosion test index of the wire rope sample with the qualified threshold range of the electrochemistry corrosion test of the wire rope sample stored in the database; If the electrochemistry corrosion test index of the wire rope sample falls within the qualified threshold range of the electrochemistry corrosion test of the wire rope sample stored in the database, the salt spray test of the wire rope sample is qualified; If the electrochemistry corrosion test index of the wire rope sample does not fall within the qualified threshold range of the electrochemistry corrosion test of the wire rope sample stored in the database, the electrochemistry test of the wire rope sample is unqualified.

7. A method for testing the corrosion resistance of a steel wire rope according to claim 6, characterized in that: The process of fusing and analyzing the dataset of the electrochemical corrosion test parameters of the wire rope samples stored in the database with the dataset of the electrochemical corrosion test of the wire rope samples to obtain the electrochemical corrosion test index of the wire rope samples is as follows: Calculate the difference between the electrochemical transient corrosion current and the calibrated electrochemical transient corrosion current stored in the database to obtain the electrochemical transient corrosion current difference; Calculate the difference between the electrochemical breakdown potential and the electrochemical breakdown potential stored in the calibrated database to obtain the electrochemical breakdown potential difference; Process the electrochemical transient corrosion current difference and the electrochemical breakdown potential difference to obtain the electrochemical corrosion test index of the wire rope samples.

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