Production and preparation process of bright stainless steel wire rope with high corrosion resistance

Abstract

The invention relates to a production and preparation process of a bright stainless steel wire rope with high corrosion resistance. The production and preparation process comprises the following steps: S1, rope combining and paying off; s2, electrolytic polishing: electrolyzing the stainless steel wire rope paid off in the step S1 through an electrolytic polishing tank; s3, rinsing: the stainless steel wire rope passes through a cleaning tank and is washed with clear water, and residual acidic electrolyte is cleaned; s4, neutralizing: neutralizing the rinsed stainless steel wire rope by using an alkaline solution in a neutralizing tank; s5, washing with hot water: washing the neutralized stainless steel wire rope with hot water of 70-85 DEG C in a hot water tank; s6, coating: guiding the steel wire rope into a drying oven to preheat the steel wire rope, guiding the steel wire rope out of the drying oven to enter an overflow coating box through a pulley, and guiding the steel wire rope into the drying oven for drying after passing through the overflow coating box; nano coating liquid is arranged in the overflow coating box; and S7, taking up. The corrosion resistance and the service life of the steel wire rope disclosed by the invention are greatly improved under the dual protection of the nano protective layer and the self passive film.

Description

Technical Field

[0001] The invention relates to the technical field of steel wire ropes, and in particular to a production process for a bright stainless steel wire rope with high corrosion resistance. Background Art

[0002] Steel wire rope is a spiral steel wire bundle twisted together according to certain rules with steel wires that meet the requirements of mechanical properties and geometric dimensions. Steel wire rope consists of steel wire, rope core and grease. With the development of urbanization, stainless steel wire rope is used more and more in different fields, and the requirements for its quality and performance are getting higher and higher. For some appearance parts and stainless steel wire ropes for plastic coating, on the one hand, it is required that the surface of the steel wire rope is free of lubricants such as oil and dirt, and the appearance is beautiful and has no color difference. On the other hand, there are also higher corrosion resistance requirements. Conventional chemical cleaning methods are difficult to ensure the consistency of the appearance of stainless steel wire ropes; the industry often uses some strong acid electrolytes to electrolyze stainless steel wire ropes as anodes. During electrolysis, the metal matrix on the surface of stainless steel loses electrons, and the metal matrix on the surface of stainless steel becomes free. The passivation film on the surface of stainless steel will be regenerated after being destroyed. At the same time, the oily and water-based lubricants used for lubrication in the front of the stainless steel wire rope are stripped off the stainless steel wire rope, thereby obtaining a stainless steel wire rope with consistent appearance. However, after strong acid electrolysis, on the one hand, the residual lubricant on the surface of the stainless steel wire rope is stripped off, and the corrosion resistance decreases; on the other hand, if there is any residual acidic substance, it will also affect the formation of the passivation film, thereby causing the corrosion resistance of the stainless steel wire rope product to decrease.

[0003] The processes for improving the corrosion resistance of stainless steel wire ropes in the prior art all have the defect of a narrow application range, such as: (1) Chinese patent CN107675534A discloses a production process for stainless steel wire ropes, which uses stainless steel as the raw material for the production of the steel wire rope. The chemical composition of the stainless steel includes, by mass percentage: the chemical composition includes, by mass percentage: C0.012-0.025, Si0.06-0.075, P<0.03, W 0.20-0.30, Cr15.0-19.0, Ni20.0-23.0, Mo 1-1.5, Mn2.50-5.00, S<0.03, Cu<0.1, N<0.01, Ti<0.02, and the balance is Fe and unavoidable impurities; the production process specifically includes the following process steps: step one, surface treatment; step two, drawing; step three, normalizing heat treatment, galvanizing; step four, drawing; step five, twisting into ropes. Although the steel wire rope in this patent has a certain degree of corrosion resistance, it is a high-carbon steel wire rope, which has too high strength and hardness and insufficient flexibility, making it unsuitable for medical devices. In addition, the surface of the steel wire rope is damaged during the drawing process, making it difficult to clean it during subsequent use. It cannot be used in the field of medical devices and its corrosion resistance is also affected. (2) Chinese patent CN202211443792.0 discloses a method for preparing a high-cleanliness medical steel wire rope, which improves the cleanliness and corrosion resistance of the steel wire rope and ensures the cleanliness of the medical steel wire rope. However, this patent is mainly for medical stainless steel wire ropes, and its main function is to reduce the residual lubricant on the surface to improve the corrosion resistance of the product in the boiling water test, and its application range is narrow. (3) Chinese patent CN201911372185.8 discloses a production process for corrosion-resistant stainless steel wire ropes for weaving meshes. While ensuring tensile strength, the process has good corrosion resistance and extends the service life of the stainless steel wire ropes. However, the patent mainly improves the corrosion resistance from the aspects of raw materials, front-end cold processing, and heat treatment production processes. It is only applicable to stainless steel wire ropes for weaving meshes and has a narrow application range.

[0004] Therefore, there is a need in the art for a production process for stainless steel wire ropes with improved corrosion resistance for a wide range of applications. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a production and preparation process for a bright stainless steel wire rope with high corrosion resistance. From the design and development of the post-cleaning process, the corrosion resistance of the stainless steel wire rope is improved by optimizing the electrolyte formulation and the application of nanomaterial coating, and the invention is suitable for various austenitic stainless steel wire ropes.

[0006] The object of the present invention is achieved in that: A production process for a bright stainless steel wire rope with high corrosion resistance, comprising the following contents: S1. Closing and releasing the line: The stainless steel busbar is drawn to obtain a stainless steel wire, and the stainless steel wire is twisted into a stainless steel wire rope through multiple processes; S2. Electrolytic polishing: The stainless steel wire rope released in step S1 is electrolyzed in an electrolytic polishing tank, the stainless steel wire rope is in contact with an anode roller, the anode roller is made of copper, a lead plate is used as a cathode, and a mixed acid electrolyte is used for electrolysis; S3, rinsing: The stainless steel wire rope after electrolytic polishing in step S2 is washed with clean water in a cleaning tank to clean the residual acid electrolyte and control its pH value between 3 and 5; S4, Neutralization: The stainless steel wire rope rinsed in step S3 is passed through a neutralization tank and neutralized with an alkaline solution, and its pH value is controlled between 6 and 7.5 by titration of the alkaline solution; S5. Hot water washing: The stainless steel wire rope neutralized in step S4 is washed in a hot water tank with hot water at 70-85°C to preheat the steel wire rope and control its pH value between 6.5 and 7.0; S6. Coating: In step S5, the temperature of the stainless steel wire rope after hot water washing is 30-60°C, and it is guided by the fifth pulley into the oven to preheat the steel wire rope, and the temperature of the oven is 100-180°C; after the steel wire rope leaves the oven, it is guided by the pulley into the overflow coating box, and after passing through the overflow coating box, it is guided by the pulley and then enters the oven for drying; the overflow coating box is provided with nano coating liquid, and the stainless steel wire rope is guided out of the oven through the sixth pulley after drying S7, Reeling: The steel wire rope coated with the nano coating liquid and dried in step S6 is taken up by a take-up machine.

[0007] Furthermore, the electrolyte in step S2 includes the following components in percentage by mass: 10.0% to 12.0% sulfuric acid, 70% to 75.0% cleaning solution and 1% to 1.2% citric acid solid; the specific gravity of the mixed electrolyte is 1.3 to 1.4 g / cm 3 , water is used to adjust the density, the electrolysis temperature is 50.0℃~60.0℃, and the electrolysis current is 7.5~14.9A / mm 2 .

[0008] Furthermore, the alkaline solution in step S4 is 98% to 99.5% by mass of an alkaline cleaning agent and 0.5% to 2% by mass of an organic emulsified silicon.

[0009] Furthermore, the mass percentage components of the nano coating liquid in step S6 are: 85.0-90.0% of silicon-based nanomaterials, 10-15% of a 1:1 mixture of toluene and isopropanol. After being diluted with the 1:1 mixture of toluene and isopropanol, it is easier to dry and solidify during the coating process, and the solidification time is 50-60S.

[0010] Furthermore, the polishing tank, cleaning tank, neutralization tank, hot water tank and oven are connected and arranged in sequence, and an insulation pipe is provided between the hot water tank and the oven, and the insulation pipe is covered with insulation cotton.

[0011] Furthermore, a fifth pulley is provided on one side of the oven close to the hot water tank, a first pulley and a sixth pulley are provided on the other side of the oven, a fourth pulley is provided above the fifth pulley, a second pulley is provided above the first pulley, a third pulley is provided between the fourth pulley and the second pulley, an overflow coating box is provided between the third pulley and the second pulley, the overflow coating box is provided in the coating box, the coating box is connected to a collecting tank, a liquid extraction pump is provided on the coating box, the collecting tank is connected to the liquid extraction pump through a liquid extraction pipe, and the liquid extraction pump extracts the nano coating liquid in the collecting tank to the coating overflow box.

[0012] Furthermore, the oven adopts circulating hot air, and an exhaust fan is arranged under the oven. One side of the exhaust fan is connected to one end of the oven through a first air supply duct, and the other side of the exhaust fan is connected to the other end of the oven through a second air supply duct.

[0013] Furthermore, the anode roller in the polishing tank is made of copper, with a mass percentage of >99.0%.

[0014] Furthermore, the anode roller in the polishing tank is provided with two pieces, one at the line inlet and the other at the line outlet: a first copper rod and a second copper rod, and the first copper rod and the second copper rod can be rotatably arranged in the polishing tank.

[0015] Furthermore, the first pulley and the second pulley are wooden pulleys, and the third pulley, the fourth pulley, the fifth pulley and the sixth pulley are nylon pulleys.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a production and preparation process for a bright stainless steel wire rope with high corrosion resistance, so that the appearance quality of the stainless steel wire rope for plastic coating and appearance parts is consistent, without color difference, and more beautiful; no strong acid electrolytic polishing is used, thereby avoiding the influence of acidic residues on the corrosion resistance of the steel wire rope; at the same time, the appearance quality of the steel wire rope can exceed the surface quality of a single chemical cleaning, and obtain an appearance consistent with that of strong acid electrolytic polishing.

[0017] The present invention uses appropriate silicon-based nanomaterial components and coating processes to quickly dry the nanomaterial, making it more suitable for mass production. At the same time, the silicon-based nanomaterial can be used as a protective layer for stainless steel wire ropes. The stainless steel material is protected by the nano protective layer and its own passivation film, and its corrosion resistance and service life are greatly improved.

[0018] The cleaning system of the present invention is provided with a multifunctional oven, which integrates the three processes of preheating, coating and drying, simplifies the process, improves the technical effect of nano coating, and improves the quality of the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the cleaning system of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the polishing groove of the present invention.

[0021] Figure 3 It is a schematic diagram of the process flow of the present invention.

[0022] in: Polishing tank 1, cleaning tank 2, neutralization tank 3, hot water tank 4, insulation pipe 6, oven 7, first air supply duct 8, second air supply duct 9, exhaust fan 10, first pulley 11, second pulley 12, third pulley 13, fourth pulley 14, fifth pulley 15, sixth pulley 16, collecting tank 17, liquid extraction pipe 18, coating overflow box 19, liquid extraction pump 20, coating box 21, first copper rod 22, second copper rod 23. DETAILED DESCRIPTION

[0023] In order to better understand the technical solution of the present invention, the following will be described in detail in conjunction with the relevant illustrations. It should be understood that the following specific embodiments are not intended to limit the specific implementation of the technical solution of the present invention, and are only implementations that can be adopted by the technical solution of the present invention. It should be noted that the description of the positional relationship of each component in this article, such as component A being located above component B, is based on the description of the relative positions of the components in the illustration, and is not intended to limit the actual positional relationship of the components. Example 1

[0024] See also Figure 1-Figure 3 , Figure 3 A process flow diagram of a production process of a highly corrosion-resistant bright stainless steel wire rope of the present invention is drawn. As shown in the figure, a production process of a highly corrosion-resistant bright stainless steel wire rope includes the following contents: S1. Closing and releasing the line: The stainless steel busbar is drawn to obtain a stainless steel wire, which is twisted into a stainless steel wire rope through multiple processes; the stainless steel wire rope is passively paid out at a pay-out location, and the pay-out tension is less than 50N (the stainless steel wire rope is austenitic stainless steel); S2. Electrolytic polishing: The stainless steel wire rope released in step S1 is electrolyzed in the electrolytic polishing tank 1, the stainless steel wire rope is in contact with the anode roller, the anode roller is made of copper, the lead plate is used as the cathode, and the mixed acid electrolyte is used for electrolysis; the electrolyte includes the following components in mass percentage: 10.0% sulfuric acid, 75.0% cleaning solution (density is 1.35g / cm 3 ) and 1.2% citric acid solid, the rest is water and inevitable impurities. The cleaning liquid can be 104E room temperature cleaning liquid produced by Jiangsu Hongci Technology Co., Ltd.; the specific gravity of the mixed electrolyte is 1.3~1.4g / cm 3 , water was used to adjust the density, the electrolysis temperature was 60.0℃, and the electrolysis current was 13A / mm 2 ; S3, rinsing: The stainless steel wire rope after electrolytic polishing in step S2 is washed with clean water in a cleaning tank 2 to clean the residual acid electrolyte, and the pH value is controlled between 3 and 5 by tap water; S4, Neutralization: The stainless steel wire rope rinsed in step S3 is passed through the neutralization tank 3 and neutralized with an alkaline solution, and its pH value is controlled between 6 and 7.5 by titration of the alkaline solution; the alkaline solution is 98.0% by mass of an alkaline cleaning agent and 2% by mass of an organic emulsified silicon, and the alkaline cleaning agent can be the WC-180FZ alkaline cleaning agent of Jinan Yinuo Lubricant Manufacturing Co., Ltd.; S5. Hot water washing: The stainless steel wire rope neutralized in step S4 is washed with hot water at 70-85°C in a hot water tank 4 to preheat the wire rope, and the pH value is controlled between 6.5 and 7.0 by adding tap water; S6. Coating: The stainless steel wire rope after hot water washing in step S5 is preheated in the oven 7. The temperature of the wire rope after hot water washing is 30-60°C, and the temperature of the oven 7 is 160.0°C. After the wire rope leaves the oven 7, it is guided by a pulley into the overflow coating box 19. After passing through the overflow coating box 19, it is guided by a pulley and then enters the oven 7 for drying. The overflow coating box 19 is provided with a nano coating liquid, and the mass percentage of the nano coating liquid is: 88% of silicon-based nano materials, 12% of a 1:1 mixture of toluene and isopropanol. The silicon-based nano material can be HC008-2 silicon-based nano produced by Jiangsu Hongci Technology Co., Ltd. After being diluted with a 1:1 mixture of toluene and isopropanol, it is easier to dry and solidify in the coating process, and the solidification time is 50-60S. The preferred solidification and drying time is 50-60 seconds. If the time is too short, the coating layer will not dry, and the wire rope will stick after the wire is not dried in step S7, resulting in a decrease in straightness and no improvement in corrosion resistance. S7, Reeling: The steel wire rope coated with the nano coating liquid and dried in step S6 is taken up by a take-up machine.

[0025] The polishing tank 1, the cleaning tank 2, the neutralization tank 3, the hot water tank 4 and the oven 7 are connected in sequence, and a heat preservation pipe 6 is provided between the hot water tank 4 and the oven 7, and the heat preservation pipe 6 is covered with heat preservation cotton; A fifth pulley 15 is provided on one side of the oven 7 close to the hot water tank 4, a first pulley 11 and a sixth pulley 16 are provided on the other side of the oven 7, a fourth pulley 14 is provided above the fifth pulley 15, a second pulley 12 is provided above the first pulley 11, a third pulley 13 is provided between the fourth pulley 14 and the second pulley 12, an overflow coating box 19 is provided between the third pulley 13 and the second pulley 12, the overflow coating box 19 is provided in a coating box 21, the coating box 21 is connected to a collecting tank 17, a liquid pump 20 is provided on the coating box 21, the collecting tank 17 is connected to the liquid pump 20 through a liquid pumping pipe 18, the liquid pump 20 pumps the nano coating liquid in the collecting tank 17 to the coating overflow box 19, and the coating overflow box 19 is equipped with a sealed cover to reduce material volatilization; The oven 7 uses circulating hot air. An exhaust fan 10 is arranged below the oven 7. One side of the exhaust fan 10 is connected to one end of the oven 7 through a first air supply duct 8, and the other side of the exhaust fan 10 is connected to the other end of the oven 7 through a second air supply duct 9. The exhaust fan 10 blows hot air from the oven outlet through the lower air supply duct to the oven 7 inlet, forming a hot air circulation inside the oven. After the steel wire rope enters the oven through the pulley, the steel wire rope is more susceptible to heat, so that it has a wire temperature of 65.0~75.0℃ before entering the overflow coating box, and the nanomaterial has better activity when coated with the nanomaterial, which is convenient for coating; after the steel wire rope enters the oven through the pulley, the steel wire rope is more susceptible to heat, and the nanomaterial is more likely to solidify. The preferred temperature of the oven is 100~180℃. Too high or too low is not conducive to the solidification of the coating layer. After the wire rope is not dried in step S7, it will cause the steel wire rope to stick, resulting in a decrease in straightness and no improvement in corrosion resistance.

[0026] The anode roller in the polishing tank 1 is made of copper, with a mass percentage of more than 99.0%. The anode roller in the polishing tank 1 is provided with two copper rods, a first copper rod 22 and a second copper rod 23, at the inlet and outlet of the wire. The first copper rod 22 and the second copper rod 23 can be rotatably arranged in the polishing tank 1, thereby reducing the hard friction between the steel wire rope and the anode roller and extending the service life of the anode roller. After the first copper rod 22 and the second copper rod 23 are in contact with the steel wire rope, the middle bow height is 2.0-3.0 cm.

[0027] The effective length of the polishing tank 1 is 1 m ± 0.03 m, the electrolysis temperature can be 50.0-65.0° C., and the electrolysis current is 7.5-14.9 A / mm 2 .

[0028] The first pulley 11 and the second pulley 12 are made of wooden pulleys. Wood has a certain moisture absorption effect, which can avoid the influence of undried steel wire rope on the coating; the third pulley 13, the fourth pulley 14, the fifth pulley 15 and the sixth pulley 16 are made of nylon pulleys; the nylon material effectively avoids the wear of the nano coating and is conducive to drying and solidification. Example 2

[0029] The production process of a high corrosion-resistant bright stainless steel wire rope involved in this embodiment 2 is different from that of embodiment 1 in that: The electrolyte in step S2 includes the following components in percentage by mass: 12% sulfuric acid, 70.0% cleaning solution (density 1.35 g / cm 3 ) and 1.0% citric acid solid, the rest is water and inevitable impurities; the specific gravity of the mixed electrolyte is 1.3~1.4g / cm 3 , water was used to adjust the density, the electrolysis temperature was 60.0℃, and the electrolysis current was 10.0A / mm 2 . Example 3

[0030] The production process of a high corrosion-resistant bright stainless steel wire rope involved in this embodiment 3 is different from that of embodiment 1 in that: The electrolyte in step S2 includes the following components in percentage by mass: 10.0% sulfuric acid, 75.0% cleaning solution (density 1.35 g / cm 3 ) and 1.2% citric acid solids, the rest is water and inevitable impurities; the specific gravity of the mixed electrolyte is 1.3~1.4g / cm 3 , water was used to adjust the density, the electrolysis temperature was 58.0℃, and the electrolysis current was 10.0A / mm 2 . Example 4

[0031] The production process of a high corrosion-resistant bright stainless steel wire rope involved in this embodiment 4 is different from that of embodiment 1 in that: The alkaline solution in step S4 is 99.0% by mass of alkaline cleaning agent and 1.0% by mass of organic emulsified silicon. Example 5

[0032] The production process of a high corrosion-resistant bright stainless steel wire rope involved in this embodiment 5 is different from that of embodiment 1 in that: The temperature of the oven 7 in step S6 is 100.0°C. Example 6

[0033] The production process of a high corrosion-resistant bright stainless steel wire rope involved in this embodiment 6 is different from that in embodiment 1 in that: The mass percentage of the nano coating liquid in step S6 is: 86% of silicon-based nanomaterials, 14% of toluene and a 1:1 mixture of isopropanol.

[0034] Comparative Example 1: The production process of a bright stainless steel wire rope provided in this comparative example 1 is different from that in Example 1 in that: First, the stainless steel wire rope is electrolyzed in a polishing tank. The stainless steel wire rope is in contact with the anode roller, the anode roller is made of copper, and the lead plate is used as the cathode. The mixed acid electrolyte is used for electrolysis. The electrolyte includes the following mass percentage components: 100.0% sulfuric acid and inevitable impurities, the electrolysis temperature is 60.0℃, and the electrolysis current is 10.0A / mm 2 ; The stainless steel wire rope after electrolysis is directly placed in a coating box for coating with nanomaterials without going through the cleaning method of the cleaning tank, neutralization tank and hot water tank of Example 1; the other steps are the same as those of Example 1.

[0035] Comparative Example 2: The production process of a bright stainless steel wire rope provided in this comparative example 2 is different from that in example 1 in that: S6. Drying: The temperature of the steel wire rope after hot water washing in step S5 is 30-60°C, and it is placed in an oven 7 at 160.0°C for drying. After drying, the steel wire rope is taken out of the oven through a pulley, without passing through the coating box of Example 1, and without being coated with nanomaterials; the other steps are the same as Example 1.

[0036] Comparative Example 3: The production process of a bright stainless steel wire rope provided in this comparative example 3 is different from that in example 1 in that: S4, Neutralization: The stainless steel wire rope rinsed in step S3 is passed through a neutralization tank 3 and neutralized with an alkaline solution, and its pH value is controlled between 1 and 4 by titration of the alkaline solution; the alkaline solution is 99.0% by mass of an alkaline cleaning agent and 1% by mass of an organic emulsified silicon; The rest are the same as in Example 1.

[0037] Comparative Example 4: The production process of a bright stainless steel wire rope provided in this comparative example 4 is different from that in example 1 in that: S6. Coating: The stainless steel wire rope after hot water washing in step S5 is preheated in the oven 7. The temperature of the steel wire rope after hot water washing is 30-60°C, and the temperature of the oven 7 is 160.0°C. After the steel wire rope exits the oven 7, it is guided by a pulley into the overflow coating box 19. After passing through the overflow coating box 19, it is guided by a pulley and then enters the oven 7 for drying. The overflow coating box 19 is provided with a nano coating liquid. The mass percentage of the nano coating liquid is: 88% of silicon-based nano materials, 12% of a 1:1 mixture of toluene and isopropanol. After being diluted with a 1:1 mixture of toluene and isopropanol, it is easier to dry and solidify in the coating process, and the solidification time is 20S. The rest are the same as in Example 1.

[0038] Comparative Example 5: The production process of a bright stainless steel wire rope provided in this comparative example 5 is different from that in example 1 in that: S2. Electrolytic polishing: The stainless steel wire rope released in step S1 is electrolyzed in the electrolytic polishing tank 1, the stainless steel wire rope is in contact with the anode roller, the anode roller is made of copper, the lead plate is used as the cathode, and the mixed acid electrolyte is used for electrolysis; the electrolyte includes the following components in mass percentage: 100.0% sulfuric acid and inevitable impurities, the electrolysis temperature is 60.0℃, and the electrolysis current is 10.0A / mm 2 ; S6. Drying: The temperature of the steel wire rope after hot water washing in step S5 is 30-60°C, and it is placed in an oven 7 at 160.0°C for drying. After drying, the steel wire rope is taken out of the oven through a pulley; Comparative Example 5 did not undergo the cleaning method of Example 1, did not pass through a coating box, and was not coated with nanomaterials; the rest was the same as Example 1.

[0039] The test data of Examples 1 to 6 and Comparative Examples 1 to 5 are shown in Table 1 below:

[0040] From Table 1 we can see that: It can be seen from Examples 1 to 6 that the production method of the bright stainless steel wire rope with high corrosion resistance of the present invention can obtain relatively stable corrosion resistance by adopting the technical solution.

[0041] Comparing Example 1 and Example 2, when the concentration of sulfuric acid is reduced and the concentration of citric acid and the cleaning solution is increased, the corrosion resistance is better, which shows that the present invention further limits the composition of the cleaning solution within a specific range, which can ensure that the obtained steel wire rope product has better corrosion resistance; Comparing Example 1 and Example 3, the higher the electrolysis current, the better the corrosion resistance. This shows that the present invention further limits the electrolysis process within a specific range, which can ensure that the obtained steel wire rope product has better corrosion resistance. Comparing Example 1 and Example 4, the present invention further limits the acid-base properties of the steel wire rope before coating to a specific range, which can ensure that the obtained steel wire rope product has better corrosion resistance; Comparing Example 1 and Example 5, the better the preheating effect of the steel wire rope is, the higher the coating efficiency is; at the same time, the higher the drying temperature is, the faster the coating material solidifies. This shows that the present invention further limits the oven temperature of the steel wire rope in S6 to a specific range, which can ensure that the obtained steel wire rope product has better corrosion resistance; Comparison of Example 1 and Comparative Example 1 shows that the appearance quality of strong acid electrolysis is poor; Comparison of Example 1 and Comparative Example 2 shows that a suitable nano-coating has an improved effect on the corrosion resistance; Comparison of Example 1 and Comparative Example 3 shows that the acidity of the steel wire rope before coating with nanomaterials will affect the corrosion resistance; Comparison of Example 1 and Comparative Example 4 shows that the non-solidification of the coated nanomaterial will affect the flatness of the product; Comparative Example 1 and Comparative Example 5 show that the appearance quality of strong acid electrolysis is poor, and at the same time, it shows that suitable nano-coating has an improving effect on the corrosion resistance.

[0042] In summary, the present invention provides a method for producing and preparing bright stainless steel wire rope for corrosion resistance. The technical solution can obtain relatively stable corrosion resistance and better appearance quality, with low production cost, and is suitable for large-scale promotion and application.

[0043] The above are only specific application examples of the present invention and do not constitute any limitation on the protection scope of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. A production process for a bright stainless steel wire rope with high corrosion resistance, characterized in that: Includes the following: S1. Closing and releasing the line: The stainless steel busbar is drawn to obtain a stainless steel wire, and the stainless steel wire is twisted into a stainless steel wire rope through multiple processes; S2. Electrolytic polishing: The stainless steel wire rope released in step S1 is electrolyzed in an electrolytic polishing tank (1), the stainless steel wire rope is in contact with an anode roller, the anode roller is made of copper, a lead plate is used as a cathode, and a mixed acid electrolyte is used for electrolysis; S3, rinsing: The stainless steel wire rope after electrolytic polishing in step S2 is passed through a cleaning tank (2) and washed with clean water to clean the residual acid electrolyte, and the pH value thereof is controlled between 3 and 5; S4, Neutralization: The stainless steel wire rope rinsed in step S3 is passed through a neutralization tank (3) and neutralized with an alkaline solution, and its pH value is controlled between 6 and 7.5 by titration of the alkaline solution; S5. Hot water washing: The stainless steel wire rope neutralized in step S4 is washed in a hot water tank (4) using hot water at 70-85° C. to preheat the steel wire rope and control its pH value to be between 6.5 and 7.0; S6. Coating: The temperature of the stainless steel wire rope after hot water washing in step S5 is 30-60° C., and the wire rope is guided through a fifth pulley (15) into an oven (7) to preheat the wire rope, and the temperature of the oven (7) is 100-180° C. After exiting the oven (7), the wire rope is guided through a pulley into an overflow coating box (19), and after passing through the overflow coating box (19), the wire rope is guided through a pulley and then enters the oven (7) for drying; a nano coating liquid is provided in the overflow coating box (19), and after drying, the stainless steel wire rope is guided out of the oven through a sixth pulley (16). S7, Reeling: The steel wire rope coated with the nano coating liquid and dried in step S6 is taken up by a take-up machine.

2. The production process of a bright stainless steel wire rope with high corrosion resistance according to claim 1, characterized in that: The electrolyte in step S2 includes the following components in percentage by mass: 10.0% to 12.0% sulfuric acid, 70% to 75.0% cleaning solution, and 1% to 1.2% citric acid solid; the specific gravity of the mixed electrolyte is 1.3 to 1.4 g / cm 3 , water is used to adjust the density, the electrolysis temperature is 50.0℃~60.0℃, and the electrolysis current is 7.5~14.9A / mm 2 .

3. The production process of a bright stainless steel wire rope with high corrosion resistance according to claim 1, characterized in that: The alkaline solution in step S4 is 98% to 99.5% by mass of an alkaline cleaning agent and 0.5% to 2% by mass of an organic emulsified silicon.

4. The production process of a bright stainless steel wire rope with high corrosion resistance according to claim 1, characterized in that: The mass percentage of the nano coating liquid in step S6 is: 85.0-90.0% of silicon-based nanomaterials, 10-15% of a 1:1 mixture of toluene and isopropanol. After being diluted with the 1:1 mixture of toluene and isopropanol, it is easier to dry and solidify during the coating process, and the solidification time is 50-60S.

5. The production process of a bright stainless steel wire rope with high corrosion resistance according to claim 1, characterized in that: The polishing tank (1), the cleaning tank (2), the neutralization tank (3), the hot water tank (4) and the oven (7) are connected and arranged in sequence, and a heat preservation pipe (6) is provided between the hot water tank (4) and the oven (7), and the heat preservation pipe (6) is covered with heat preservation cotton.

6. The production process of a bright stainless steel wire rope with high corrosion resistance according to claim 1, characterized in that: A fifth pulley (15) is provided on one side of the oven (7) close to the hot water tank (4), a first pulley (11) and a sixth pulley (16) are provided on the other side of the oven (7), a fourth pulley (14) is provided above the fifth pulley (15), a second pulley (12) is provided above the first pulley (11), a third pulley (13) is provided between the fourth pulley (14) and the second pulley (12), an overflow coating box (19) is provided between the third pulley (13) and the second pulley (12), the overflow coating box (19) is provided in a coating box (21), the coating box (21) is connected to a collecting tank (17), a liquid extraction pump (20) is provided on the coating box (21), the collecting tank (17) is connected to the liquid extraction pump (20) via a liquid extraction pipe (18), and the liquid extraction pump (20) extracts the nano coating liquid in the collecting tank (17) to the coating overflow box (19).

7. The production process of a bright stainless steel wire rope with high corrosion resistance according to claim 6, characterized in that: The oven (7) uses circulating hot air. An exhaust fan (10) is arranged below the oven (7). One side of the exhaust fan (10) is connected to one end of the oven (7) via a first air supply duct (8), and the other side of the exhaust fan (10) is connected to the other end of the oven (7) via a second air supply duct (9).

8. The production process of a bright stainless steel wire rope with high corrosion resistance according to claim 1, characterized in that: The anode roller in the polishing tank (1) is made of copper, with a mass percentage of more than 99.0%.

9. The production process of a bright stainless steel wire rope with high corrosion resistance according to claim 8, characterized in that: The anode roller in the polishing tank (1) is provided with two pieces, one at the inlet and the other at the outlet: a first copper rod (22) and a second copper rod (23), and both the first copper rod (22) and the second copper rod (23) are rotatably arranged in the polishing tank (1).

10. The production process of a bright stainless steel wire rope with high corrosion resistance according to claim 6, characterized in that: The first pulley (11) and the second pulley (12) are wooden pulleys, and the third pulley (13), the fourth pulley (14), the fifth pulley (15) and the sixth pulley (16) are nylon pulleys.

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