A method for testing the corrosion resistance of steel wire ropes used in production and processing

Abstract

The invention discloses a method for testing the corrosion resistance of a steel wire rope for production and processing, and relates to the technical field of steel wire rope testing. The steel wire rope corrosion resistance test for production and processing comprises the following steps: obtaining a salt spray corrosion test data set of a steel wire rope sample, analyzing the steel wire rope sample salt spray corrosion test data set, and obtaining a steel wire rope sample that has passed the salt spray test; obtaining a steel wire rope sample immersion corrosion test data set of a steel wire rope sample that has passed the salt spray test, analyzing the steel wire rope sample immersion corrosion test data set, and obtaining a steel wire rope sample that has passed the immersion test; obtaining a steel wire rope sample electrochemical corrosion test data set of a steel wire rope sample that has passed the immersion test, analyzing the steel wire rope sample electrochemical corrosion test data set, and obtaining a steel wire rope sample that has passed the electrochemical corrosion test. The advantage of being able to comprehensively evaluate the corrosion resistance of steel wire ropes in different corrosive environments is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of steel wire rope testing, and in particular to a method for testing the corrosion resistance of steel wire ropes used in production and processing. Background Art

[0002] In the production and processing of wire ropes, in order to ensure that the wire ropes have good corrosion resistance during use, corresponding corrosion resistance tests are required. Intergranular corrosion is a localized corrosion that occurs along the grain boundaries of metal materials in a specific corrosive medium. This type of corrosion causes the grains to lose their bonding force without any changes on the metal (alloy) surface, resulting in a complete loss of metal strength and sudden damage. If stress exists, intergranular corrosion will turn into intergranular stress corrosion damage. If stainless steel is treated with sulfuric acid-copper sulfate solution, the carbon in the stainless steel will form Cr with the surrounding chromium. 23 C 6 When this type of chromium carbide precipitates along the grain boundary, it causes local chromium depletion around the carbide, resulting in intergranular corrosion, which 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. The depletion theory believes that intergranular corrosion is caused by the precipitation of new phases at the grain boundary, which causes part or all of the supersaturated carbon in the stainless steel to be replaced by Cr. 23 C 6 The chromium-depleted zone is formed on the grain boundary, which causes the depletion of a certain component near the grain boundary. The chromium-depleted zone acts as an anode and suffers corrosion. This test method is essentially to test the ability of the stainless steel wire rope to resist intergranular corrosion. The intergranular corrosion can be used to determine the impact on the overall mechanical properties of the entire stainless steel wire rope. Therefore, it is very necessary to test the corrosion resistance of the stainless steel wire rope.

[0003] For example, the Chinese patent application with publication number: CN115201097A discloses a method for testing the corrosion resistance of stainless steel wire ropes. It proposes to compare the mechanical properties and fracture morphology before and after corrosion to determine whether the corrosion resistance of the stainless steel wire rope is good. The stainless steel wire rope is sensitized and then subjected to a sulfuric acid-copper sulfate corrosion test to detect the ability of the stainless steel wire rope itself to resist intergranular corrosion. Intergranular corrosion in stainless steel is directly related to the chromium element. If the chromium content is low, the corrosion resistance decreases. After being corroded by a sulfuric acid-copper sulfate solution, chromium (Cr) will precipitate at the grain boundary. 23 C 6 ), resulting in chromium-poor areas around, which act as anodes and suffer corrosion, affecting the bonding force of the grain boundaries, thereby affecting the overall mechanical properties of the stainless steel wire rope and ensuring the accuracy of the overall test.

[0004] Steel wire ropes may face various forms of corrosion in different environments. The existing technology of testing the corrosion resistance of steel wire ropes by analyzing chromium compounds is too simple and not comprehensive enough. Therefore, it is difficult to comprehensively evaluate the true corrosion resistance of steel wire ropes with the existing technology. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a method for testing the corrosion resistance of steel wire ropes for production and processing, which solves the problem that the existing technology is too single and not comprehensive in testing the corrosion resistance of steel wire ropes by analyzing chromium compounds. Therefore, it is difficult for the prior art to comprehensively evaluate the true corrosion resistance of steel wire ropes.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for testing the corrosion resistance of steel wire ropes for production and processing, comprising the following steps: obtaining a salt spray corrosion test data set of a 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 that passes the salt spray test; obtaining a steel wire rope sample immersion corrosion test data set of the steel wire rope sample that passes the salt spray test, and analyzing the steel wire rope sample immersion corrosion test data set to obtain a steel wire rope sample that passes the immersion test; obtaining a steel wire rope sample electrochemical corrosion test data set of the steel wire rope sample that passes the immersion test, and analyzing the steel wire rope sample electrochemical corrosion test data set to obtain a steel wire rope sample that passes the electrochemical corrosion test, and marking the steel wire rope sample that passes the electrochemical corrosion test as qualified.

[0007] Furthermore, the salt spray corrosion test data set of the steel wire rope sample includes the ratio of the salt spray corrosion area to the salt spray non-corroded area, the salt spray corrosion coverage, the number of salt spray corrosion spots and the total area of ​​the salt spray corrosion spots; the specific analysis process of obtaining the salt spray corrosion test data set of the steel wire rope sample is: obtaining the 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 salt spray non-corroded area, the salt spray corrosion coverage, the number of salt spray corrosion spots and the total area of ​​the salt spray corrosion spots.

[0008] Furthermore, the specific analysis process for obtaining the steel wire rope sample that passes the salt spray test is as follows: a fusion analysis is performed on the steel wire rope sample salt spray corrosion test parameter data set stored in the database and the steel wire rope sample salt spray corrosion test data set to obtain a steel wire rope sample salt spray corrosion test index; the steel wire rope sample salt spray corrosion test index is compared with a steel wire rope sample salt spray corrosion test threshold stored in the database; if the steel wire rope sample salt spray corrosion test index is less than or equal to the steel wire rope sample salt spray corrosion test threshold stored in the database, the steel wire rope sample passes the salt spray test; if the steel wire rope sample salt spray corrosion test index is greater than the steel wire rope sample salt spray corrosion test threshold stored in the database, the steel wire rope sample fails the salt spray test.

[0009] Furthermore, the steel wire rope sample immersion corrosion test data set includes an average immersion corrosion depth, a total immersion corrosion area and an immersion corrosion rate; the specific analysis process for obtaining the steel wire rope sample that passes the immersion test is as follows: fusing and analyzing the steel wire rope sample immersion corrosion test parameter data set stored in the database with the steel wire rope sample immersion corrosion test data set to obtain a steel wire rope sample immersion corrosion test index; comparing the steel wire rope sample immersion corrosion test index with the steel wire rope sample immersion corrosion test threshold stored in the database; if the steel wire rope sample immersion corrosion test index is less than or equal to the steel wire rope sample immersion corrosion test threshold stored in the database, the steel wire rope sample immersion test passes; if the steel wire rope sample immersion corrosion test index is greater than the steel wire rope sample immersion corrosion test threshold stored in the database, the steel wire rope sample immersion test fails.

[0010] Furthermore, the calculation formula of the immersion corrosion index of the steel wire rope sample is as follows:

[0011] ;

[0012] In the formula, is the corrosion index of wire rope sample immersion, is the average immersion corrosion depth, is the average immersion corrosion parameter depth stored in the database, is the total immersion corrosion area, The total area of ​​immersion corrosion parameters stored in the database, is the immersion corrosion rate, is the immersion corrosion parameter 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, The weight factor for the immersion corrosion rate set in the database.

[0013] Furthermore, the electrochemical corrosion test data set of the steel wire rope sample includes an electrochemical corrosion transient corrosion current and an electrochemical corrosion rupture potential; the specific analysis process of obtaining the electrochemical corrosion test data set of the steel wire rope sample is as follows: applying a voltage pulse to the steel wire rope sample, obtaining a transient response in which the current rises rapidly to a peak value, and analyzing the size of the current peak and the time to reach the peak value to obtain the electrochemical corrosion transient corrosion current; gradually increasing the potential from the open circuit potential, and obtaining the change of the current with the increase of the potential, and the potential at which the current suddenly increases with the potential is the electrochemical corrosion rupture potential.

[0014] Furthermore, the process of obtaining the steel wire rope sample that passes the electrochemical corrosion test is as follows: a fusion analysis is performed on the steel wire rope sample electrochemical corrosion test parameter data set stored in the database and the steel wire rope sample electrochemical corrosion test data set to obtain the steel wire rope sample electrochemical corrosion test index, wherein the steel wire rope sample electrochemical corrosion test parameter data set stored in the database includes electrochemical corrosion transient corrosion current and electrochemical corrosion rupture potential, and the steel wire rope sample electrochemical corrosion test data set includes electrochemical corrosion transient corrosion current and electrochemical corrosion rupture potential; the steel wire rope sample electrochemical corrosion test index is compared with the steel wire rope sample electrochemical corrosion test qualified threshold interval stored in the database; if the steel wire rope sample electrochemical corrosion test index falls within the steel wire rope sample electrochemical corrosion test qualified threshold interval stored in the database, the steel wire rope sample salt spray test is qualified; if the steel wire rope sample electrochemical corrosion test index does not fall within the steel wire rope sample electrochemical corrosion test qualified threshold interval stored in the database, the steel wire rope sample electrochemical test fails.

[0015] Furthermore, the electrochemical corrosion test parameter data set of the wire rope samples stored in the database is fused and analyzed with the electrochemical corrosion test data set of the wire rope samples to obtain the electrochemical corrosion test index of the wire rope samples. The process is as follows: the electrochemical transient corrosion current is calculated by difference with the parameter electrochemical transient corrosion current stored in the database to obtain the electrochemical transient corrosion current difference; the electrochemical rupture potential is calculated by difference with the electrochemical rupture potential stored in the parameter database to obtain the electrochemical rupture potential difference; the electrochemical transient corrosion current difference and the electrochemical rupture potential difference are processed to obtain the electrochemical corrosion test index of the wire rope samples.

[0016] Furthermore, after marking the quality of the steel wire rope samples that have passed the electrochemical corrosion test as qualified, it also includes: comprehensively processing the steel wire rope sample salt spray corrosion test data set, the steel wire rope sample immersion corrosion test data set and the steel wire rope sample electrochemical corrosion test data set to obtain a comprehensive index; comparing the steel wire rope sample corrosion comprehensive index with the corrosion level corresponding to the corrosion comprehensive index of each steel wire rope sample stored in the database to obtain the corrosion level corresponding to the steel wire rope sample corrosion comprehensive index.

[0017] Furthermore, the comprehensive index formula is:

[0018] ;

[0019] 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 corrosion index of wire rope sample immersion, 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 for the immersion corrosion test index stored in the database, is the scaling factor for the electrochemical corrosion test index stored in the database, is a natural constant.

[0020] The present invention has the following beneficial effects:

[0021] The corrosion resistance test method for steel wire ropes used in production and processing can test the corrosion resistance of steel wire ropes in marine or saline-alkali environments through salt spray corrosion test, simulate the corrosion resistance of steel wire ropes in acid, alkali and salt solutions through immersion corrosion test, and simulate the corrosion resistance of steel wire ropes in electrochemical corrosion environments through electrochemical corrosion test, thereby being able to comprehensively evaluate the corrosion resistance of steel wire ropes in different corrosion environments, and solving the problem that the existing technology of corrosion resistance performance testing of steel wire ropes by analyzing chromium compounds is too single and not comprehensive enough.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a flow chart of the corrosion resistance testing method of the steel wire rope used in production and processing.

[0024] Figure 2 The present invention is an image showing changes in the electrochemical corrosion index evaluation value along with the electrochemical transient corrosion current difference. DETAILED DESCRIPTION

[0025] The embodiment of the present application solves the problem that the prior art of testing the corrosion resistance of steel wire ropes by analyzing chromium compounds is too single and not comprehensive, and therefore it is difficult to comprehensively evaluate the true corrosion resistance of steel wire ropes.

[0026] The overall idea of ​​the problem in the embodiment of this application is as follows:

[0027] Firstly, the steel wire rope samples are placed in a salt spray test chamber for salt spray corrosion test to obtain salt spray corrosion data. The steel wire rope samples suitable for the salt spray corrosion test are immersed in an acidic solution for immersion test to obtain immersion test data. The steel wire rope samples that pass the immersion test are subjected to an electrochemical corrosion test to obtain electrochemical corrosion test data. Finally, the steel wire rope sample salt spray corrosion test data set, the steel wire rope sample immersion corrosion test data set and the steel wire rope sample electrochemical corrosion test data set are comprehensively processed to determine the corrosion level of the steel wire rope samples.

[0028] See also Figure 1 The embodiment of the present invention provides a technical solution: a method for testing the corrosion resistance of a steel wire rope used in production and processing, comprising the following steps: obtaining a salt spray corrosion test data set of a 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 that passes the salt spray test; obtaining a steel wire rope sample immersion corrosion test data set of the steel wire rope sample that passes the salt spray test, and analyzing the steel wire rope sample immersion corrosion test data set to obtain a steel wire rope sample that passes the immersion test; obtaining a steel wire rope sample electrochemical corrosion test data set of the steel wire rope sample that passes the immersion test, and analyzing the steel wire rope sample electrochemical corrosion test data set to obtain a steel wire rope sample that passes the electrochemical corrosion test, and marking the steel wire rope sample that passes the electrochemical corrosion test as qualified.

[0029] 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 salt spray non-corroded area, the salt spray corrosion coverage, the number of salt spray corrosion spots and the total area of ​​the salt spray corrosion spots; the specific analysis process of obtaining the salt spray corrosion test data set of the steel wire rope sample is: obtaining the 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 salt spray non-corroded area, the salt spray corrosion coverage, the number of salt spray corrosion spots and the total area of ​​the salt spray corrosion spots.

[0030] In this embodiment, the wire rope sample is first placed in a salt spray test chamber and exposed for a predetermined time. Then, a digital camera or a scanning electron microscope is used to capture high-definition images of the surface area of ​​the corroded wire rope sample to ensure that the image is clear and the corroded area and the uncorroded area can be clearly distinguished. These images show the visualization effect of corrosion, salt spray corrosion coverage, the number of salt spray corrosion spots and the size distribution of salt spray corrosion. The salt spray corrosion images of the salt spray corrosion area of ​​the wire rope sample are analyzed using image processing software (such as Adobe Photoshop, ImageJ, or other professional material analysis software), and the image segmentation technology is used to calculate the area ratio of the corroded area to the uncorroded area. The salt spray corrosion coverage is obtained by using image processing programs such as ImageJ, Adobe Professional material analysis software tools such as Photoshop image editing software measure the total area of ​​the wire rope sample and the area covered by corrosion. The area of ​​the corroded area of ​​the wire rope sample is divided by the total area and then multiplied by 100 to obtain the percentage of corrosion coverage of the wire rope sample. The number of salt spray corrosion spots is determined by using image analysis tools (such as ImageJ or the image processing toolbox in MATLAB) to identify and mark each independent corrosion spot. The particle size analysis function of the image analysis tool is used to automatically calculate and identify the number of corrosion spots, and automatically identify and measure the area of ​​each corrosion spot. The areas of multiple corrosion spots are accumulated to obtain the total area of ​​salt spray corrosion spots.

[0031] Specifically, the specific analysis process for obtaining the steel wire rope sample that passes the salt spray test is as follows: a fusion analysis is performed on the steel wire rope sample salt spray corrosion test parameter data set stored in the database and the steel wire rope sample salt spray corrosion test data set to obtain the steel wire rope sample salt spray corrosion test index; the steel wire rope sample salt spray corrosion test index is compared with the steel wire rope sample salt spray corrosion test threshold stored in the database; if the steel wire rope sample salt spray corrosion test index is less than or equal to the steel wire rope sample salt spray corrosion test threshold stored in the database, the steel wire rope sample passes the salt spray test; if the steel wire rope sample salt spray corrosion test index is greater than the steel wire rope sample salt spray corrosion test threshold stored in the database, the steel wire rope sample fails the salt spray test.

[0032] In the present embodiment, firstly, the salt spray corrosion data of the wire rope samples in a salt spray corrosion environment are obtained through historical data. These data are derived from previous tests. The salt spray corrosion data of the wire rope samples include the salt spray corrosion coverage, the number of salt spray corrosion spots and the total area of ​​salt spray corrosion spots. By selecting the historical data of salt spray corrosion tests of wire rope samples from different batches, the average value of the salt spray corrosion coverage, the average value of the number of salt spray corrosion spots and the average value of the total area of ​​salt spray corrosion spots of all wire rope samples are calculated to obtain the salt spray corrosion data of the wire rope samples.

[0033] The salt spray corrosion test data of the steel wire rope sample actually obtained is compared with the reference corrosion data to calculate the salt spray corrosion test index of the steel wire rope sample. The salt spray corrosion test index of the steel wire rope sample includes the salt spray corrosion coverage, the number of salt spray corrosion spots and the total area of ​​salt spray corrosion spots. The salt spray corrosion index of the steel wire rope sample indicates the degree of matching between the actual corrosion degree of the steel wire rope sample and the pre-referenced data. The salt spray corrosion test index of the steel wire rope sample is compared with the salt spray corrosion test threshold value set in the database, and whether the steel wire rope sample salt spray corrosion test is qualified is determined according to the comparison result. If the salt spray corrosion test index of the steel wire rope sample is less than or equal to the salt spray corrosion test threshold value of the steel wire rope sample stored in the database, the steel wire rope sample salt spray test is qualified. If the salt spray corrosion test index of the steel wire rope sample is greater than the salt spray corrosion test threshold value of the steel wire rope sample stored in the database, the steel wire rope sample salt spray test is unqualified.

[0034] The salt spray corrosion test threshold set in the database can be determined by collecting a large amount of historical data on salt spray corrosion tests of steel wire ropes, analyzing their distribution characteristics, and calculating the statistical parameters of the historical data, such as the mean and standard deviation. The threshold can be set as the mean plus a certain multiple of the standard deviation.

[0035] The calculation formula for obtaining the salt spray corrosion index of the wire rope sample is as follows (all parameters are processed as pure quantities and units are removed before calculation):

[0036] ;

[0037] In the formula, is the salt spray corrosion index of the wire rope sample, is the salt spray corrosion coverage, Determine the coverage of salt spray corrosion parameters stored in the database, is the number of salt spray corrosion spots, The number of spots for salt spray corrosion parameters stored in the database, is the total area of ​​salt spray corrosion spots, The total spot area of ​​the salt spray corrosion parameters stored in the database, is the weight factor of the salt spray corrosion coverage 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 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. It is an exponential factor stored in the database that adjusts the influence of the total area of ​​salt spray corrosion spots.

[0038] The formula smoothes extreme values ​​by logarithmically transforming the salt spray corrosion coverage, the number of salt spray corrosion spots, and the total area ratio of salt spray corrosion spots. This helps to reduce the impact of single abnormal data on the overall evaluation results. The logarithmic transformation also improves the stability and robustness of the model when facing values ​​of different sizes. Describes the proportion of the wire rope sample covered by the salt spray corrosion area after the salt spray corrosion test. This ratio reflects the severity of the damage to the surface of the wire rope sample and the number of salt spray corrosion spots. The total number of corrosion spots visible on the surface of the wire rope sample after the salt spray corrosion test. The number of spots can provide information on the corrosion distribution. The total area of ​​salt spray corrosion spots It is the total area covered by all corrosion spots on the wire rope sample after the salt spray corrosion test. This metric measures the actual impact of corrosion on the material surface. The weighting factor , , The weight factor is adjusted according to the importance of salt spray corrosion coverage, number of salt spray corrosion spots, and 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 accuracy of the parameters, the relationship between different parameters and the comprehensive impact. , , It is a nonlinear response index corresponding to the salt spray corrosion coverage, the number of salt spray corrosion spots, and the total area of ​​salt spray corrosion spots. Such nonlinear processing helps to balance the influence of various corrosion indicators and prevent extreme values ​​from excessively affecting the overall evaluation results.

[0039] A mapping set of salt spray corrosion coverage, number of salt spray corrosion spots, total area of ​​salt spray corrosion spots and their corresponding weight factors is established through the evaluation values ​​of historically measured salt spray corrosion coverage, number of salt spray corrosion spots, and total area of ​​salt spray corrosion spots. The current salt spray corrosion coverage, number of salt spray corrosion spots, and total area of ​​salt spray corrosion spots are input into the mapping set to obtain the weight factors corresponding to the current salt spray corrosion coverage, number of salt spray corrosion spots, and total area of ​​salt spray corrosion spots.

[0040] A mapping set of salt spray corrosion coverage, number of salt spray corrosion spots, total area of ​​salt spray corrosion spots and their corresponding exponential factors is established through the evaluation values ​​of historically measured salt spray corrosion coverage, number of salt spray corrosion spots, and total area of ​​salt spray corrosion spots. The current salt spray corrosion coverage, number of salt spray corrosion spots, and total area of ​​salt spray corrosion spots are input into the mapping set to obtain the exponential factors corresponding to the current salt spray corrosion coverage, number of salt spray corrosion spots, and total area of ​​salt spray corrosion spots.

[0041] Specifically, the steel wire rope sample immersion corrosion test data set includes an average immersion corrosion depth, a total immersion corrosion area and an immersion corrosion rate; the specific analysis process for obtaining the steel wire rope sample that passes the immersion test is as follows: a fusion analysis is performed on the steel wire rope sample immersion corrosion test parameter data set stored in the database and the steel wire rope sample immersion corrosion test data set to obtain a steel wire rope sample immersion corrosion test index; the steel wire rope sample immersion corrosion test index is compared with a steel wire rope sample immersion corrosion test threshold stored in the database; if the steel wire rope sample immersion corrosion test index is less than or equal to the steel wire rope sample immersion corrosion test threshold stored in the database, the steel wire rope sample immersion test passes; if the steel wire rope sample immersion corrosion test index is greater than the steel wire rope sample immersion corrosion test threshold stored in the database, the steel wire rope sample immersion test fails.

[0042] In this embodiment, the immersion corrosion data of the wire rope samples in an immersion corrosion environment are obtained through historical data. These data are derived from previous tests. The immersion corrosion data of the wire rope samples include the average immersion corrosion parameter depth, the immersion corrosion parameter total area and the immersion corrosion parameter rate. By selecting historical data of salt spray corrosion tests of wire rope samples from different batches, 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 immersion corrosion data of the wire rope samples.

[0043] The immersion corrosion test data of the wire rope sample actually obtained is compared with the reference corrosion data to calculate the wire rope sample immersion corrosion test index. The wire rope sample immersion corrosion test index includes the average immersion corrosion depth, the total immersion corrosion area and the immersion corrosion rate. The wire rope sample immersion corrosion index indicates the degree of matching between the actual corrosion degree of the wire rope sample and the pre-reference data. The wire rope sample immersion corrosion test index is compared with the immersion corrosion test threshold set in the database, and whether the wire rope sample immersion corrosion test is qualified is determined based on the comparison result. If the wire rope sample immersion corrosion test index is less than or equal to the wire rope sample immersion corrosion test threshold stored in the database, the wire rope sample immersion test is qualified. If the wire rope sample immersion corrosion test index is greater than the wire rope sample salt immersion corrosion test threshold stored in the database, the wire rope sample immersion test is unqualified.

[0044] The immersion corrosion test threshold set in the database can be determined by collecting a large amount of historical immersion corrosion test data, and then using descriptive statistical analysis (such as calculating the mean, median, standard deviation) and inferential statistical techniques (such as confidence intervals and hypothesis testing) to analyze the distribution and variability of the data, and based on these analysis results, determine the threshold.

[0045] Specifically, the calculation formula of the immersion corrosion index of the steel wire rope sample is as follows (all parameters are processed as pure quantities and units are removed before calculation):

[0046] ;

[0047] In the formula, is the corrosion index of wire rope sample immersion, is the average immersion corrosion depth, is the average immersion corrosion parameter depth stored in the database, is the total immersion corrosion area, The total area of ​​immersion corrosion parameters stored in the database, is the immersion corrosion rate, is the immersion corrosion parameter 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, The weight factor for the immersion corrosion rate set in the database.

[0048] In this embodiment, by integrating multiple corrosion data such as average immersion corrosion depth, total immersion corrosion area and immersion corrosion rate, this comprehensive evaluation method can fully consider the various corrosion factors that the material may encounter in actual application, and can more accurately reflect the overall corrosion resistance of the material than relying on a single corrosion parameter. Indicates the degree of corrosion penetration into the material structure, which is critical to the structural integrity. The total area of ​​immersion corrosion Shows the extensiveness of corrosion, which can reflect the effect of the corrosion protection layer and the immersion corrosion rate It provides information on the speed of corrosion development, which is key to predicting future corrosion trends and potential risks. The index that integrates multiple immersion corrosion parameters such as average immersion corrosion depth, total immersion corrosion area and immersion corrosion rate can more accurately assess the corrosion risk of materials under specific environmental conditions.

[0049] A mapping set of average immersion corrosion depth, total immersion corrosion area, immersion corrosion rate and their corresponding weight factors is established through evaluation values ​​of historically measured average immersion corrosion depth, total immersion corrosion area, and immersion corrosion rate. The current average immersion corrosion depth, total immersion corrosion area, and immersion corrosion rate are input into the mapping set to obtain the weight factors corresponding to the current average immersion corrosion depth, total immersion corrosion area, and immersion corrosion rate.

[0050] It should be noted that the greater the average immersion corrosion depth, the greater the immersion corrosion index evaluation value, 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 immersion corrosion index evaluation value 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 average immersion corrosion parameter depth remains unchanged at 0.5, the total immersion corrosion parameter area remains unchanged at 150, and the immersion corrosion parameter rate remains unchanged at 0.05. Example values ​​of the average immersion corrosion depth are as follows:

[0051] Table 1: Example values ​​of average immersion corrosion depth in immersion corrosion index evaluation

[0052] 0.2 0.4 120 0.3 0.03 0.3 0.58 0.4 0.4 120 0.3 0.03 0.3 0.74 0.6 0.4 120 0.3 0.03 0.3 0.90

[0053] Specifically, the electrochemical corrosion test data set of the steel wire rope sample includes an electrochemical corrosion transient corrosion current and an electrochemical corrosion rupture potential; the specific analysis process of obtaining the electrochemical corrosion test data set of the steel wire rope sample is as follows: applying a voltage pulse to the steel wire rope sample, obtaining a transient response in which the current rises rapidly to a peak value, and analyzing the size of the current peak and the time to reach the peak value to obtain the electrochemical corrosion transient corrosion current; gradually increasing the potential from the open circuit potential, and obtaining the change of the current with the increase of the potential, and the potential at which the current suddenly increases with the potential is the electrochemical corrosion rupture potential.

[0054] In this embodiment, the transient corrosion current test is performed by applying a short voltage pulse to the wire rope sample and measuring its current response. This test reflects the instantaneous response ability of the wire rope sample in a rapidly changing corrosion environment. The current peak value and response time recorded in the test can provide an indicator of the sensitivity and reaction speed of the wire rope sample to the corrosion stimulus. By analyzing the magnitude and response time of the transient current, 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 susceptible to corrosion attack, while a fast response time may indicate the intensity of the corrosion process. The rupture potential test is performed by gradually increasing the potential of the wire rope sample and recording the change of the current with the increase of the potential. This test aims to find the potential point where the current suddenly increases, which is defined as the rupture potential. The rupture potential is a key indicator that marks 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 rupture potential, the corrosion protection ability of the wire rope sample at different potentials can be evaluated. A low rupture potential may indicate that the wire rope sample begins to corrode rapidly at a lower potential, suggesting that its corrosion resistance is poor. Through the joint analysis of transient corrosion current and rupture potential, the corrosion behavior of wire rope in 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 in actual applications, especially in corrosive environments such as oceans or chemical sites.

[0055] Specifically, the process of obtaining a steel wire rope sample that passes the electrochemical corrosion test is as follows: a fusion analysis is performed on the steel wire rope sample electrochemical corrosion test parameter data set stored in the database and the steel wire rope sample electrochemical corrosion test data set to obtain the steel wire rope sample electrochemical corrosion test index, wherein the steel wire rope sample electrochemical corrosion test parameter data set stored in the database includes electrochemical corrosion transient corrosion current and electrochemical corrosion rupture potential, and the steel wire rope sample electrochemical corrosion test data set includes electrochemical corrosion transient corrosion current and electrochemical corrosion rupture potential; the steel wire rope sample electrochemical corrosion test index is compared with the steel wire rope sample electrochemical corrosion test qualified threshold interval stored in the database; if the steel wire rope sample electrochemical corrosion test index falls within the steel wire rope sample electrochemical corrosion test qualified threshold interval stored in the database, the steel wire rope sample salt spray test is qualified; if the steel wire rope sample electrochemical corrosion test index does not fall within the steel wire rope sample electrochemical corrosion test qualified threshold interval stored in the database, the steel wire rope sample electrochemical test is unqualified.

[0056] In this embodiment, the electrochemical corrosion test parameter data set of the wire rope sample is merged and analyzed with the latest electrochemical corrosion test data set, and the electrochemical corrosion test parameter data set is sourced from historical data. By selecting the historical data of electrochemical corrosion tests of wire rope samples from different batches, the average value of the electrochemical corrosion transient corrosion current and the average value of the electrochemical corrosion rupture potential of all wire rope samples are calculated to obtain the electrochemical corrosion data of the wire rope samples. A corrosion test index is calculated by comprehensively analyzing the data obtained from the transient corrosion current and the rupture potential. This index comprehensively reflects the electrochemical corrosion performance of the sample. An electrochemical corrosion test threshold is set in the database. The calculated corrosion test index is compared with the electrochemical corrosion test threshold interval set in the database to determine whether the index falls within the qualified interval. If the corrosion test index is within the qualified threshold interval, the sample is judged to be qualified; if not, it is judged to be unqualified.

[0057] For the electrochemical corrosion test thresholds set in the database, a certain amount of historical electrochemical corrosion test data is collected, 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 thresholds of key corrosion parameters. This threshold can be set based on the minimum acceptable performance standards of the wire rope samples under predetermined environments, thereby ensuring the scientificity and reliability of the electrochemical corrosion test results.

[0058] Specifically, the electrochemical corrosion test parameter data set of the wire rope samples stored in the database is fused and analyzed with the electrochemical corrosion test data set of the wire rope samples to obtain the electrochemical corrosion test index of the wire rope samples. The process is as follows: the electrochemical transient corrosion current is calculated by difference with the parameter electrochemical transient corrosion current stored in the database to obtain the electrochemical transient corrosion current difference; the electrochemical rupture potential is calculated by difference with the electrochemical rupture potential stored in the parameter database to obtain the electrochemical rupture potential difference; the electrochemical transient corrosion current difference and the electrochemical rupture potential difference are processed to obtain the electrochemical corrosion test index of the wire rope samples.

[0059] In this embodiment, in the electrochemical corrosion test, the wire rope sample will be exposed to a specific voltage pulse, and the instantaneous current change of the wire rope sample under the voltage pulse will be recorded, including the peak value of the current and its change rate. The transient corrosion current peak value of the sample will be compared with the reference transient corrosion current peak value, and the difference between the two will be calculated. By measuring and analyzing the difference in transient corrosion current, the sensitivity of the wire rope sample to electrochemical stimulation can be quantified. In the electrochemical test, a starting potential is first set, usually the open circuit potential, and then the potential is gradually increased while recording the current response of the sample. The rupture potential is the point in this series of potentials where the current suddenly increases significantly. This marks the destruction of the corrosion layer on the surface of the material and the acceleration of the corrosion process. The measured rupture potential is compared with the reference rupture potential, and the difference between the measured rupture potential and the reference rupture potential is calculated. This difference reflects the corrosion stability of the material relative to the standard or expected performance. By analyzing the rupture potential difference 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.

[0060] The calculation formula of the electrochemical corrosion index of the wire rope sample is as follows (all parameters are processed as pure quantities and units are removed before calculation):

[0061] ;

[0062] In the formula, is the electrochemical corrosion index of the wire rope sample, is the electrochemical transient corrosion current difference, is the electrochemical rupture potential difference, is the weight factor of the electrochemical corrosion transient corrosion current set in the database, The weight factor for the electrochemical corrosion rupture potential set in the database.

[0063] It should be noted that the square root of the transient corrosion current is taken to reduce the excessive impact of large current values ​​on the overall index. This treatment makes the contribution of the increase in current value to the index grow at a slower rate, making the index more sensitive to changes in current within a small range. This helps to find subtle corrosion changes in the data, especially when the current changes are small. The design of the formula allows the weights and reference values ​​to be adjusted according to different test conditions and material properties, so that it can be flexibly applied to a variety of different environments and materials. Weight factor and The adjustment can be optimized according to the experimental design and purpose to obtain the most meaningful corrosion evaluation.

[0064] A mapping set of electrochemical transient corrosion current difference, electrochemical rupture potential difference and their corresponding weight factors is established through evaluation values ​​of historically measured electrochemical transient corrosion current difference and electrochemical rupture potential difference. The current electrochemical transient corrosion current difference and electrochemical rupture potential difference are input into the mapping set to obtain the weight factors corresponding to the current electrochemical transient corrosion current difference and electrochemical rupture potential difference.

[0065] like Figure 2 As shown, it is an image of the change of electrochemical corrosion index evaluation value with the electrochemical transient corrosion current difference, where the x-axis represents the electrochemical transient corrosion current difference, and the y-axis represents the electrochemical corrosion index evaluation value, which can help to intuitively understand how the electrochemical transient corrosion current difference affects the electrochemical corrosion index evaluation value. The larger the electrochemical transient corrosion current difference, the larger the electrochemical corrosion index evaluation value, indicating that the functionality of the wire rope sample detected by the detection system is better. With the increase of the electrochemical transient corrosion current difference, the influence of the electrochemical transient corrosion current difference on the electrochemical corrosion index evaluation value gradually weakens. The electrochemical rupture potential difference is 0.05 and remains unchanged, the weight factor of the electrochemical corrosion transient corrosion current is 0.6 and remains unchanged, and the weight factor of the electrochemical corrosion rupture potential is 0.4 and remains unchanged. The example values ​​of the chemical transient corrosion current difference are as follows:

[0066] Table 2: Example values ​​of electrochemical transient corrosion current difference in electrochemical corrosivity index evaluation value

[0067] 0.1 0.05 0.6 0.4 0.210 0.2 0.05 0.6 0.4 0.288 0.3 0.05 0.6 0.4 0.349

[0068] Specifically, after marking the quality of the steel wire rope samples that have passed the electrochemical corrosion test as qualified, the method also includes: comprehensively processing the steel wire rope sample salt spray corrosion test data set, the steel wire rope sample immersion corrosion test data set and the steel wire rope sample electrochemical corrosion test data set to obtain a comprehensive index; comparing the steel wire rope sample corrosion comprehensive index with the corrosion level corresponding to the corrosion comprehensive index of each steel wire rope sample stored in the database to obtain the corrosion level corresponding to the steel wire rope sample corrosion comprehensive index.

[0069] In this implementation scheme, firstly, data of three different corrosion tests, namely salt spray, immersion and electrochemical, are collected. Each test provides information on the performance of the material under a specific corrosion environment. A comprehensive calculation method (such as arithmetic mean, weighted average or a more complex mathematical model) is used to summarize the various test results into a single comprehensive corrosion index, which reflects the overall corrosion resistance of the material under various environments. Different corrosion levels are set according to industry standards or empirical regulations. The level setting can be based on previous experimental data and relevant standards. These level thresholds are recorded and stored in a centralized database. Each threshold corresponds to a range of one or a group of comprehensive indexes. These data are used to compare with the newly measured comprehensive corrosion index. The calculated comprehensive corrosion index of the wire rope sample is compared with the corrosion level threshold stored in the database. The comparison process determines the corrosion level of the sample.

[0070] Specifically, the comprehensive index formula is:

[0071] ;

[0072] 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 corrosion index of wire rope sample immersion, 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 for the immersion corrosion test index stored in the database, is the scaling factor for the electrochemical corrosion test index stored in the database, is a natural constant.

[0073] In this embodiment, for each corrosion test result, salt spray corrosion , immersion corrosion , and electrochemical corrosion , first add 1 and then take the natural logarithm. When the corrosion test results are very large, the original values ​​may cause numerical problems when calculating or comparing. The logarithmic transformation helps avoid these problems by mitigating the impact of large values ​​(because the logarithmic function grows slower than the linear growth) while maintaining sensitivity to small values. This allows test results to be effectively compared over a wide range. The logarithmic transformation can unify the scale of the corrosion data, so that the results between different tests can be compared more fairly. This is critical for synthesizing multiple test data. By reducing the impact of extreme values, the logarithmic transformation helps to highlight moderate changes that may not be so obvious on the original scale. Through different scaling factors , , , the formula gives 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. The purpose of the design is to enhance the interaction between the corrosion indicators and provide a nonlinear response. This design makes the overall corrosion index highly sensitive to significant changes in any one indicator, thereby reflecting higher corrosion risks in the comprehensive assessment.

[0074] A mapping set of the evaluation values ​​of the salt spray corrosion index of the steel wire rope sample, the immersion corrosion index of the steel wire rope sample, and the electrochemical corrosion index of the steel wire rope sample and their corresponding scaling factors is established through the evaluation values ​​of the salt spray corrosion index of the steel wire rope sample, the immersion corrosion index of the steel wire rope sample, and the electrochemical corrosion index of the steel wire rope sample measured historically. The current evaluation values ​​of the salt spray corrosion index of the steel wire rope sample, the immersion corrosion index of the steel wire rope sample, and the electrochemical corrosion index of the steel wire rope sample are input into the mapping set to obtain the scaling factors corresponding to the evaluation values ​​of the salt spray corrosion index of the steel wire rope sample, the immersion corrosion index of the steel wire rope sample, and the electrochemical corrosion index of the steel wire rope sample.

[0075] In summary, this application has at least the following effects:

[0076] Salt spray corrosion test can be used to test the corrosion resistance of steel wire rope in marine or saline-alkali environment, immersion corrosion test can simulate the corrosion resistance of steel wire rope in acid, alkali and salt solution, and electrochemical corrosion test can simulate the corrosion resistance of steel wire rope in electrochemical corrosion environment, so as to comprehensively evaluate the corrosion resistance of steel wire rope in different corrosion environments, which solves the problem that the existing technology of corrosion resistance testing of steel wire rope by analyzing chromium compounds is too single and not comprehensive. Therefore, it is difficult for the existing technology to comprehensively evaluate the true corrosion resistance of steel wire rope.

[0077] It will be appreciated by those skilled in the art 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. Furthermore, 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.

[0078] The present invention is described with reference to flowcharts and / or block diagrams of systems, 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.

[0079] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0080] 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 A step that specifies a function in one or more boxes.

[0081] 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.

[0082] 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 testing the corrosion resistance of steel wire ropes used in production and processing, characterized in that: The following steps are involved: Obtain a salt spray corrosion test data set of a steel wire rope sample, analyze the data set of the salt spray corrosion test of the steel wire rope sample, and obtain steel wire rope samples that pass the salt spray test; Acquire a steel wire rope sample immersion corrosion test data set of the steel wire rope sample that has passed the salt spray test, and analyze the steel wire rope sample immersion corrosion test data set to obtain the steel wire rope sample that has passed the immersion test; Acquire a steel wire rope sample electrochemical corrosion test data set of the steel wire rope sample that has passed the immersion test, analyze the steel wire rope sample electrochemical corrosion test data set, obtain the steel wire rope sample that has passed the electrochemical corrosion test, and mark the steel wire rope sample that has passed the electrochemical corrosion test as qualified; After the steel wire rope samples that have passed the electrochemical corrosion test are marked as qualified, it also includes: Comprehensively process the salt spray corrosion test data set of the steel wire rope sample, the immersion corrosion test data set of the steel wire rope sample, and the electrochemical corrosion test data set of the steel wire rope sample to obtain a comprehensive index; Compare the comprehensive corrosion index of the steel wire rope sample with the corrosion level corresponding to the comprehensive corrosion index of each steel wire rope sample stored in the database to obtain the corrosion level corresponding to the comprehensive corrosion index of the steel wire rope sample; The comprehensive index formula is: ； 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 corrosion index of wire rope sample immersion, 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 for the immersion corrosion test index stored in the database, is the scaling factor for the electrochemical corrosion test index stored in the database, is a natural constant; The calculation formula for obtaining the salt spray corrosion index of the wire rope sample is as follows. All parameters are processed as pure quantities before calculation, and the units are removed: ； In the formula, is the salt spray corrosion index of the wire rope sample, is the salt spray corrosion coverage, Determine the coverage of salt spray corrosion parameters stored in the database, is the number of salt spray corrosion spots, The number of spots for salt spray corrosion parameters stored in the database, is the total area of ​​salt spray corrosion spots, The total spot area of ​​the salt spray corrosion parameters stored in the database, is the weight factor of the salt spray corrosion coverage 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 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. ; The calculation formula of the immersion corrosion index of the wire rope sample is as follows: ； In the formula, is the corrosion index of wire rope sample immersion, is the average immersion corrosion depth, is the average immersion corrosion parameter depth stored in the database, is the total immersion corrosion area, The total area of ​​immersion corrosion parameters stored in the database, is the immersion corrosion rate, is the immersion corrosion parameter 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 of the electrochemical corrosion index of the wire rope sample is as follows. All parameters are processed as pure quantities before calculation, and the units are removed: ； In the formula, is the electrochemical corrosion index of the wire rope sample, is the electrochemical transient corrosion current difference, is the electrochemical rupture potential difference, is the weight factor of the electrochemical corrosion transient corrosion current set in the database, The weight factor for the electrochemical corrosion rupture potential set in the database.

2. A method for testing the corrosion resistance of a steel wire rope for production and processing according to claim 1, characterized in that: The salt spray corrosion test data set of the steel wire rope sample includes the ratio of the salt spray corrosion area to the salt spray non-corroded area, the salt spray corrosion coverage, the number of salt spray corrosion spots and the total area of ​​salt spray corrosion spots; The specific analysis process of obtaining the salt spray corrosion test data set of the steel wire rope sample is as follows: Obtain salt spray corrosion images of salt spray corrosion areas of wire rope samples; The salt spray corrosion images were analyzed to obtain the ratio of the salt spray corrosion area to the salt spray non-corrosion area, the salt spray corrosion coverage, the number of salt spray corrosion spots and the total area of ​​salt spray corrosion spots.

3. A method for testing the corrosion resistance of a steel wire rope for production and processing according to claim 2, characterized in that: The specific analysis process of obtaining the qualified steel wire rope sample in the salt spray test is as follows: The salt spray corrosion test parameter data set of the wire rope samples stored in the database is integrated and analyzed with the salt spray corrosion test data set of the wire rope samples to obtain the salt spray corrosion test index of the wire rope samples; Compare the salt spray corrosion test index of the steel wire rope sample with the salt spray corrosion test threshold of the steel wire rope sample stored in the database; If the salt spray corrosion test index of the steel wire rope sample is less than or equal to the salt spray corrosion test threshold of the steel wire rope sample stored in the database, the steel wire rope sample passes the salt spray test; 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 fails.

4. The method for testing the corrosion resistance of a steel wire rope for production and processing according to claim 1, characterized in that: The steel wire rope sample immersion corrosion test data set includes an average immersion corrosion depth, a total immersion corrosion area, and an immersion corrosion rate; The specific analysis process of obtaining the steel wire rope sample that passes the immersion test is as follows: The wire rope sample immersion corrosion test parameter data set stored in the database is fused and analyzed with the wire rope sample immersion corrosion test data set to obtain the wire rope sample immersion corrosion test index; Compare the wire rope sample immersion corrosion test index with the wire rope sample immersion corrosion test threshold stored in the database; If the wire rope sample immersion corrosion test index is less than or equal to the wire rope sample immersion corrosion test threshold stored in the database, the wire rope sample immersion test is qualified; If the wire rope sample immersion corrosion test index is greater than the wire rope sample immersion corrosion test threshold stored in the database, the wire rope sample immersion test fails.

5. The method for testing the corrosion resistance of a steel wire rope used in production and processing according to claim 1, characterized in that: The electrochemical corrosion test data set of the steel wire rope sample includes electrochemical corrosion transient corrosion current and electrochemical corrosion rupture potential; The specific analysis process of obtaining the electrochemical corrosion test data set of the steel wire rope sample is as follows: Apply voltage pulses to the wire rope sample to obtain the transient response of the current rising rapidly to the peak value, and analyze the current peak value and the time to reach the peak value to obtain the electrochemical corrosion transient corrosion current; Starting from the open circuit potential, the potential is gradually increased, and the change of current with the increase of potential is obtained. The potential at which the current suddenly increases with the potential is the electrochemical corrosion rupture potential.

6. A method for testing the corrosion resistance of a steel wire rope for production and processing according to claim 5, characterized in that: The process of obtaining a steel wire rope sample that passes the electrochemical corrosion test is as follows: The electrochemical corrosion test parameter data set of the steel wire rope samples stored in the database is merged and analyzed with the electrochemical corrosion test data set of the steel wire rope samples to obtain the electrochemical corrosion test index of the steel wire rope samples, wherein the electrochemical corrosion test parameter data set of the steel wire rope samples stored in the database includes electrochemical corrosion transient corrosion current and electrochemical corrosion rupture potential, and the electrochemical corrosion test data set of the steel wire rope samples includes electrochemical corrosion transient corrosion current and electrochemical corrosion rupture potential; Compare the electrochemical corrosion test index of the steel wire rope sample with the qualified threshold range of the electrochemical corrosion test of the steel wire rope sample stored in the database; If the electrochemical corrosion test index of the steel wire rope sample falls within the qualified threshold range of the electrochemical corrosion test of the steel wire rope sample stored in the database, the steel wire rope sample passes the salt spray test; If the electrochemical corrosion test index of the steel wire rope sample does not fall within the qualified threshold range of the electrochemical corrosion test of the steel wire rope sample stored in the database, the electrochemical test of the steel wire rope sample fails.

7. A method for testing the corrosion resistance of a steel wire rope for production and processing according to claim 6, characterized in that: The electrochemical corrosion test parameter data set of the steel wire rope sample stored in the database is fused and analyzed with the steel wire rope sample electrochemical corrosion test data set to obtain the steel wire rope sample electrochemical corrosion test index. The process is as follows: The electrochemical transient corrosion current is calculated by difference with the reference electrochemical transient corrosion current stored in the database to obtain the electrochemical transient corrosion current difference; The electrochemical rupture potential is calculated by difference with the electrochemical rupture potential stored in the reference database to obtain the electrochemical rupture potential difference; The electrochemical transient corrosion current difference and the electrochemical rupture potential difference are processed to obtain the electrochemical corrosion test index of the steel wire rope sample.

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