Anti-corrosion stranded wire and processing technology thereof

Abstract

The invention belongs to the technical field of stranded wires, and discloses an anti-corrosion stranded wire and a processing technology thereof.The anti-corrosion stranded wire comprises a plurality of high-strength carbon steel wires which are arranged in parallel and tightly, each high-strength carbon steel wire is wrapped by an aluminum-steel combined permeable layer in an extruded mode, and a plurality of aluminum stranded wires are evenly and spirally wound around the outer sides of the high-strength carbon steel wires; wherein the aluminum-steel combined permeable layer is prepared from the following components in percentage by weight: 0.12 to 0.23 percent of aluminum-based cerium-rich rare earth, 0.18 to 0.27 percent of aluminum-based intermediate alloy and the balance of aluminum. According to the application, electrical aluminum is extruded on the high-strength carbon steel wire at high temperature and high pressure, so that an aluminum-steel combined permeable layer with the thickness of about 8m is formed between the aluminum and the steel, and the aluminum-steel combined permeable layer is used as a buffer layer, so that the aluminum and the steel which are originally distinct in personality are friendly, no potential difference exists, electrochemical corrosion can be effectively relieved and even eliminated, and the service life of the aluminum-steel combined permeable layer is prolonged. The service life of the steel-cored aluminum stranded wire is fully prolonged; and the occurrence probability of safety accidents is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of stranded wires, and in particular to a corrosion-resistant stranded wire and a processing technology thereof. Background Art

[0002] Steel-core aluminum stranded wire is widely used in transmission lines due to its good conductivity, high mechanical strength and long span. However, it is exposed to the air for a long time, especially in heavily polluted areas, and suffers from severe chemical and electrochemical corrosion, which directly affects the service life of the stranded wire.

[0003] On the one hand, the potential difference between the steel core and the aluminum wire causes electrochemical corrosion, resulting in the complete corrosion of the steel core's galvanized protective layer, followed by gradual corrosion of the aluminum. On the other hand, in the presence of pollutants, the aluminum wire is susceptible to "intergranular corrosion," increasing the resistance of the stranded wire and raising the temperature, which accelerates the corrosion rate. This cycle is prone to safety accidents at any time. To extend the service life of steel-core aluminum stranded wire and reduce the probability of safety accidents, it is urgent to develop a steel-core aluminum stranded wire with high corrosion resistance. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a corrosion-resistant stranded wire and a processing technology thereof.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a corrosion-resistant stranded wire, comprising a plurality of parallel and tightly arranged high-strength carbon steel wires, each of the high-strength carbon steel wires being extruded with an aluminum-steel bonded penetration layer, and a plurality of aluminum stranded wires being evenly spirally wrapped around the outside of the plurality of the high-strength carbon steel wires; wherein, in terms of weight percentage, the aluminum-steel bonded penetration layer comprises the following components: 0.12-0.23% aluminum-based cerium-rich rare earth, 0.18-0.27% aluminum-based intermediate alloy, and the remainder being aluminum.

[0006] By adopting the above technical solution, the aluminum-steel bonded permeation layer is made of aluminum-based cerium-rich rare earth and aluminum-based master alloy. The rare earth and corrosion-resistant alloy form a conductive balance, which can improve the aluminum's resistance to chemical corrosion. Specifically, cerium-rich rare earth is added during aluminum smelting to continuously reduce the silicon content in the aluminum solution, improving the aluminum's conductivity. Then, corrosion-resistant alloying elements (i.e., components of the aluminum-based master alloy) are added. The addition of corrosion-resistant alloying elements reduces the aluminum's conductivity. In this contradiction, a solution is found that satisfies both conductivity ≥ 61% IACS and resistivity ≤ 0.028264Ω·mm. 2 / m, while also achieving a reasonable balance that improves corrosion resistance (i.e., 0.12-0.23% aluminum-based cerium-rich rare earth, 0.18-0.27% aluminum-based master alloy, with the balance being aluminum). This application utilizes high temperature and high pressure to extrude electrical aluminum onto high-strength carbon steel wire, forming an aluminum-steel bonded permeation layer between the aluminum and steel. This layer acts as a buffer layer, allowing the originally distinct aluminum and steel to coexist harmoniously. Without a potential difference, electrochemical corrosion can be effectively mitigated or even eliminated, significantly extending the service life of the steel-core aluminum stranded wire and reducing the likelihood of safety accidents.

[0007] Furthermore, the aluminum-based master alloy includes the following components, calculated by weight percentage: 50% aluminum-based niobium and 50% MB11; wherein the niobium content in the aluminum-based niobium is 0.009-0.0135wt%; and the constituent elements of MB11 include niobium, zirconium, boron, titanium, and aluminum, with the content of each element being 0.15-0.3wt% niobium, 0.05-0.15wt% zirconium, 0.01-0.03wt% boron, 0.02-0.05wt% titanium, and the balance being aluminum.

[0008] Furthermore, the thickness of the aluminum-steel bonded penetration layer is 8-10µm.

[0009] By adopting the above technical solution, niobium, as the main corrosion-resistant element, can refine the grains and enhance the stability of the passivation film; zirconium and niobium (Nb) work synergistically to improve grain boundary corrosion resistance; boron acts as a purification agent for iron impurities in the aluminum liquid (FeB6 precipitation), reduces electron scattering centers, and improves conductivity; titanium can reduce the surface tension of the aluminum liquid, promote wettability with the steel core, optimize the formation of an 8-10µm aluminum-steel bonding penetration layer, eliminate the potential difference between the aluminum and steel, and alleviate or even eliminate the electrochemical corrosion between the aluminum and steel; aluminum-based niobium can form an Al3Nb phase and strengthen the grain boundary structure; MB11 can purify impurities, optimize the passivation film, and provide synergistic corrosion resistance; aluminum-based niobium and MB11 are added in equal proportions, and the two produce a synergistic effect, which can offset the conductivity loss and effectively enhance corrosion resistance.

[0010] The present application also discloses a process for processing corrosion-resistant stranded wire, comprising the following steps: S1. Weigh aluminum-based cerium-rich rare earth so that its weight percentage in the aluminum-steel bonded infiltration layer is 0.12-0.23%; S2. Prepare an aluminum-based master alloy by mixing 50% aluminum-based niobium and 50% MB11, wherein: The niobium content in aluminum-based niobium is 0.009-0.0135wt%, while MB11 contains niobium 0.15-0.3wt%, zirconium 0.05-0.15wt%, boron 0.01-0.03wt%, titanium 0.02-0.05wt%, and the balance is aluminum; S3. Select high-strength carbon steel wire, soak it in an alkaline detergent at 50°C for 10 minutes, then rinse it with clean water, then pickle it in a hydrochloric acid solution with a concentration of 15% and a temperature of 30°C for 5 minutes, finally rinse it with clean water and dry it; S4. Add the raw materials obtained from S1 and S2 into the melting furnace, melt at 730℃, stir for 22 minutes, and pass the steel wire obtained from S3 through the extrusion die at a speed of 3m / min. The equipment pressure is 9MPa and the temperature is 700℃ to form an aluminum-steel bonding penetration layer of 8-10µm; S5, feed the electrical aluminum into a multi-pass continuous wire drawing machine to draw aluminum wire at a speed of 20 m / min, a speed of 15 m / min, and a tension of 40 N; S6. The drawn aluminum wire is introduced into the stranding machine. The spiral pitch during stranding is 10-15 times the diameter of the aluminum stranded wire. The aluminum stranded wire is twisted at a speed of 12 m / min and a tension of 60 N.

[0011] Furthermore, the stranding machine includes a base, on the top of which are fixedly provided with a fixed plate, a first mounting seat, a second mounting seat and a third mounting seat parallel to each other, two first mounting seats are provided, a mounting roller is rotatably installed between the two first mounting seats, a synchronous wheel is rotatably installed on the second mounting seat, and a power mechanism for driving the mounting roller and the synchronous wheel to rotate synchronously is jointly installed on the base, the fixed plate and the second mounting seat, and the centers of the mounting roller and the synchronous wheel are penetrated by a center hole for the carbon steel wire to pass through, and multiple groups of mounting mechanisms for installing aluminum wire are evenly arranged on the roller surface of the mounting roller, and the synchronous wheel is penetrated by through holes evenly distributed about the axis of the synchronous wheel for the aluminum wire to pass through, and the third mounting seat is provided with a through hole for the twisted carbon steel wire and aluminum wire to pass through, and a pulling mechanism for pulling the twisted carbon steel wire and aluminum wire forward is also provided on the top of the base.

[0012] By adopting the above technical solution, the power mechanism drives the installation roller and the synchronous wheel to rotate synchronously, and the pulling mechanism pulls the twisted carbon steel wire and aluminum wire forward, so that the aluminum wire on the installation mechanism gradually wraps around the carbon steel wire after passing through the synchronous wheel to complete the twisting of the corrosion-resistant stranded wire.

[0013] Furthermore, an arc plate body coaxially arranged therewith is fixed on the roller surface of the mounting roller, and the mounting mechanism includes a mounting assembly and a storage assembly, wherein the mounting assembly is provided with two groups and respectively located near the two ends of the arc plate body, the mounting assembly includes an L-shaped plate body fixed to the top of the arc plate body and a side plate body provided on the top of the horizontal section of the L-shaped plate body, the storage assembly includes a connecting plate provided between the two side plates in the same group of mounting units, the connecting plates are provided with two and are parallel to each other, the storage assembly also includes a storage roller rotatably installed between the two connecting plates and used for winding and storing aluminum wire, and two parallel rollers are provided through the side plates The chute body has a connecting rod that slides with the chute body on the side of the connecting plate away from the storage roller. The mounting mechanisms are arranged in pairs and are mirror images of each other. Multiple pairs of mounting mechanisms are evenly distributed on the circumference of the mounting roller. Mounting blocks are fixed on the side of the connecting rod away from the axis of the mounting roller and the side of the chute body away from the axis of the mounting roller. A tightening spring is fixed between the two mounting blocks. An mounting cavity is provided in the mounting roller. A driving mechanism for driving the storage rollers in the paired mounting mechanisms to move away from each other is provided in the mounting cavity. The storage rollers in the multiple pairs of mounting mechanisms on the circumference of the mounting roller are synchronously moved away from the axis of the mounting roller under the action of the driving mechanism.

[0014] By adopting the above technical solution, different types of stranded wires have different tension requirements when wound on the steel wire. The staff can drive the storage rollers in the paired installation mechanisms away from each other through the driving mechanism according to the needs, and at the same time make the storage rollers synchronously move away from the axis of the installation rollers under the action of the driving mechanism, so that the relative distance between the two storage rollers and the distance between the two storage rollers and the axis of the installation rollers can be adjusted, so that the aluminum wire that is passed by the storage roller close to the fixed plate around the other storage roller can be tightened, so as to adjust the tension of the aluminum wire, thereby processing stranded wires with aluminum wires of different tensions.

[0015] Furthermore, the driving mechanism includes a transmission assembly and a driving assembly. The number of transmission assemblies is equal to the number of pairs of mounting mechanisms and the positions correspond one to one. The transmission assembly includes a T-shaped rod body that is arranged through the side wall of the mounting roller and slides together, a push rod fixed to one end of the T-shaped rod body located in the mounting cavity, a push block fixed to the end of the T-shaped rod body away from the axis of the mounting roller, and a push plate fixed to one side of the connecting plate. The T-shaped rod body is located in the middle of the two paired mounting mechanisms. There are two push blocks that are mirror images of each other. The cross-section of the push block and the cross-section of the push plate are both right-angled trapezoids. The side where the push block and the push plate are close to each other are both inclined surfaces and abut against each other. The driving assembly acts on the push rods in multiple groups of transmission assemblies and simultaneously controls multiple groups of T-shaped rod bodies to move toward or away from the axis of the mounting roller.

[0016] Furthermore, the driving assembly includes a sleeve rotatably mounted on the inner wall of the mounting cavity away from the fixed plate, a rotating plate fixed to one end of the sleeve close to the fixed plate, an internal driven gear fixedly mounted on the sleeve, a driving motor fixed on the inner wall of the mounting cavity away from the fixed plate, and an internal driving gear fixed to the output end of the driving motor and meshing with the internal driven gear. A center hole for the carbon steel wire to pass through is also penetrated through the rotating plate. An arc-shaped hole body is penetrated through the rotating plate for sliding engagement of push rods in multiple groups of transmission assemblies. The arc-shaped hole body is eccentrically arranged with the center hole, and one end of the arc-shaped hole body close to the center hole is arranged close to the axis of the center hole.

[0017] By adopting the above technical solution, after the drive motor is started, the drive motor drives the internal driving gear fixed to its output end to rotate, thereby causing the internal driven gear meshing with the internal driving gear, the sleeve fixed to the internal driven gear, and the rotating plate fixed to the sleeve to rotate. Since the multiple arc-shaped holes on the rotating plate are respectively slidably matched with the push rods in the multiple groups of transmission components, the multiple T-shaped rods are respectively moved synchronously toward or away from the axis of the installation roller under the action of their respective corresponding push rods, so that the relative distance between the two paired storage rollers can be adjusted to adjust the tension of the aluminum wire to an appropriate size.

[0018] Furthermore, a dovetail block is fixed to the bottom of the side panel body, and a slide groove for sliding cooperation of the dovetail block is provided at the top of the horizontal section of the L-shaped panel body, and a positioning slide hole perpendicular to and connected to the slide groove and a mounting hole fixed to and connected to the side of the positioning slide hole away from the slide groove are penetrated through the side wall of the horizontal section of the L-shaped panel body; a positioning component for fixing the side panel body is provided on the horizontal section of the L-shaped panel body, including a positioning rod that slides with the positioning slide hole and abuts against the side of the dovetail block away from the storage roller, a connecting column fixed to one end of the positioning rod away from the slide groove, an end plate fixed to one end of the connecting column away from the slide groove, and a positioning spring sleeved on the connecting column and fixed between the inner wall of the mounting hole and the end plate.

[0019] By adopting the above technical solution, when the aluminum wire on the storage roller is used up, the staff only needs to pull the end plate to retract the positioning rod into the positioning slide hole, so that the dovetail block slides along the slide groove, making it easy to disassemble the storage roller and replace it with a storage roller with a new aluminum wire coil.

[0020] Furthermore, the power mechanism includes a controller fixed to the top of the base, an active rod rotatably mounted on a fixed plate, a first driving gear fixed to the end of the active rod, a first power motor fixed to the fixed plate and fixed to one end of the active rod, a first driven gear rotatably mounted on one end of the mounting roller and meshed with the first driving gear, a second driving gear rotatably mounted on a second mounting seat, a second power motor fixed on the second mounting seat and driving the second driving gear to rotate, and a second driven gear fixedly sleeved on a synchronous wheel and meshed with the second driving gear. The first power motor, the second power motor and the drive motor are all electrically connected to the controller.

[0021] By adopting the above technical solution, the staff can control the synchronous operation of the first power motor and the second power motor through the controller. In this embodiment, the first driven gear and the second driven gear are the same size, and the first driving gear and the second driving gear are the same size, so that the installation roller and the synchronous wheel rotate synchronously. Under the action of the pulling mechanism, the aluminum wire released from the installation roller passes through the perforation on the synchronous wheel and is twisted onto the carbon steel wire.

[0022] In summary, the present invention has the following beneficial effects: 1. This application uses high temperature and high pressure to extrude electrical aluminum onto high-strength carbon steel wire, forming an aluminum-steel bonded permeation layer approximately 8µm thick between the aluminum and steel. The aluminum-steel bonded permeation layer acts as a buffer layer, allowing the originally distinct aluminum and steel to coexist harmoniously. Without a potential difference, electrochemical corrosion can be effectively alleviated or even eliminated, thereby fully extending the service life of the steel-core aluminum stranded wire and reducing the probability of safety accidents. 2. In this application, niobium, as the main corrosion-resistant element, can refine grains and enhance the stability of the passive film; zirconium and niobium (Nb) work synergistically to improve grain boundary corrosion resistance; boron purifies iron impurities in the aluminum liquid (FeB6 precipitation), reduces electron scattering centers, and improves conductivity; titanium can reduce the surface tension of the aluminum liquid, promote wettability with the steel core, optimize the formation of an 8-10µm aluminum-steel bonding penetration layer, eliminate the potential difference between the aluminum and steel, and alleviate or even eliminate electrochemical corrosion between the aluminum and steel; aluminum-based niobium can form an Al3Nb phase and strengthen the grain boundary structure; MB11 can purify impurities, optimize the passive film, and synergistically resist corrosion; aluminum-based niobium and MB11 are added in equal proportions, and the two produce a synergistic effect, which can offset the conductivity loss and effectively enhance corrosion resistance. 3. In the present application, different types of stranded wires require different tensions when wound around the steel wires. The staff can drive the storage rollers in the paired installation mechanisms away from each other through the driving mechanism according to the needs, and at the same time, make the storage rollers synchronously move away from the axis of the installation rollers under the action of the driving mechanism, so that the relative distance between the two storage rollers and the distance between the two storage rollers and the axis of the installation rollers can be adjusted, so that the aluminum wire that is passed by the storage roller close to the fixed plate around the other storage roller can be tightened, so as to adjust the tension of the aluminum wire, thereby processing stranded wires with aluminum wires of different tensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 yes Figure 1 A magnified schematic diagram of point A in the middle; Figure 3 This is a structural diagram of an embodiment of the present invention for highlighting the power mechanism; Figure 4 yes Figure 3 A schematic diagram of the local structure from another perspective; Figure 5 This is a schematic diagram of the internal structure of the mounting roller according to an embodiment of the present invention; Figure 6 yes Figure 5 A magnified schematic diagram of point B in the middle; Figure 7 This is a schematic diagram of an embodiment of the present invention used to highlight the T-shaped rod and its connection structure; Figure 8 This is a structural diagram of an embodiment of the present invention for highlighting the pressing spring; Figure 9 This is a schematic structural diagram of an embodiment of the present invention for highlighting a positioning component; Figure 10 yes Figure 9 Enlarged schematic diagram of point C in the middle; Figure 11 This is a schematic diagram of the connection structure between the aluminum stranded wire and the synchronous wheel according to an embodiment of the present invention.

[0024] Figure: 1. High-strength carbon steel wire; 11. Aluminum-steel bonded permeation layer; 12. Aluminum stranded wire; 2. Base; 21. Fixing plate; 22. First mounting seat; 23. Second mounting seat; 24. Third mounting seat; 241. Through hole; 3. Mounting roller; 31. Arc plate; 32. Mounting cavity; 4. Synchronizing pulley; 41. Perforation; 5. Power mechanism; 51. Controller; 52. Active rod; 53. First driving gear; 54. First power motor; 55. First driven gear; 56. Second driving gear; 57. Second power motor; 58. Second driven gear; 6. Center hole; 7. Mounting mechanism; 71. Mounting assembly; 711. L-shaped plate; 7111. Slide groove; 7112. Positioning slide hole; 7113. Mounting hole; 712. Side plate; 7121. Chute; 7122. Dovetail block; 72. Storage assembly; 721. Connecting plate; 7211. Connecting rod; 722. Storage roller; 8. Mounting block; 81. Clamping spring; 9. Driving mechanism; 91. Transmission assembly; 911. T-shaped rod; 912. Push rod; 913. Push block; 914. Push plate; 92. Drive assembly; 921. Sleeve; 922. Rotating plate; 9221. Arc-shaped hole; 923. Internal driven gear; 924. Drive motor; 925. Internal driving gear; 10. Positioning assembly; 101. Positioning rod; 102. Connecting column; 103. End plate; 104. Positioning spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] like Figure 1-11 As shown, the present embodiment discloses a corrosion-resistant stranded wire comprising a plurality of parallel, closely arranged high-strength carbon steel wires 1. Each high-strength carbon steel wire 1 is extruded with an aluminum-steel bonded permeation layer 11 having a thickness of 8-10µm. Multiple aluminum strands 12 are uniformly and spirally wrapped around the outer edges of the high-strength carbon steel wires 1. The aluminum-steel bonded permeation layer 11 comprises, by weight, 0.12-0.23% aluminum-based cerium-rich rare earth, 0.18-0.27% aluminum-based master alloy, and the balance aluminum.

[0027] The aluminum-steel bonded permeation layer 11 is made of aluminum-based cerium-rich rare earth and aluminum-based master alloy. The rare earth and corrosion-resistant alloy form a conductive balance, which can improve the aluminum's resistance to chemical corrosion. Specifically, cerium-rich rare earth is added during aluminum smelting to continuously reduce the silicon content in the aluminum solution, improving the aluminum's conductivity. Corrosion-resistant alloying elements (i.e., components of the aluminum-based master alloy) are then added, and the addition of corrosion-resistant alloying elements reduces the aluminum's conductivity. In this conflicting situation, a solution is found that satisfies both conductivity ≥ 61% IACS and resistivity ≤ 0.028264 Ω·mm. 2 / m, while also achieving a reasonable balance between improved corrosion resistance (i.e., 0.12-0.23% aluminum-based cerium-rich rare earth, 0.18-0.27% aluminum-based master alloy, with the balance being aluminum). This application utilizes high temperature and high pressure to extrude electrical aluminum onto a high-strength carbon steel wire 1, forming an approximately 8µm thick aluminum-steel bonded permeation layer 11 between the aluminum and steel. This aluminum-steel bonded permeation layer 11 acts as a buffer layer, allowing the originally distinct aluminum and steel to coexist harmoniously. By eliminating the potential difference, electrochemical corrosion can be effectively mitigated or even eliminated, significantly extending the service life of the steel-core aluminum stranded wire 12 and reducing the likelihood of safety accidents.

[0028] The aluminum-based master alloy comprises the following components, in weight percentage: 50% aluminum-based niobium and 50% MB11; the niobium content in the aluminum-based niobium is 0.009-0.0135wt%; the constituent elements of MB11 include niobium, zirconium, boron, titanium and aluminum, with the content of each element being 0.15-0.3wt% niobium, 0.05-0.15wt% zirconium, 0.01-0.03wt% boron, 0.02-0.05wt% titanium, and the balance being aluminum.

[0029] Niobium, as the main corrosion-resistant element, can refine grains and enhance the stability of the passive film; zirconium and niobium (Nb) work synergistically to improve grain boundary corrosion resistance; boron purifies iron impurities in the aluminum liquid (FeB6 precipitation), reduces electron scattering centers, and improves conductivity; titanium can reduce the surface tension of the aluminum liquid, promote wettability with the steel core, optimize the formation of the 8-10µm aluminum-steel bonding penetration layer 11, eliminate the potential difference between the aluminum and steel, and alleviate or even eliminate the electrochemical corrosion between the aluminum and steel; aluminum-based niobium can form Al3Nb phase and strengthen the grain boundary structure; MB11 can purify impurities, optimize the passivation film, and synergistically resist corrosion; aluminum-based niobium and MB11 are added in equal proportions, and the two produce a synergistic effect, which can offset the conductivity loss and effectively enhance corrosion resistance.

[0030] This embodiment also discloses a process for processing corrosion-resistant stranded wire, comprising the following steps: S1. Weigh aluminum-based cerium-rich rare earth so that its weight percentage in the aluminum-steel bonded infiltration layer 11 is 0.12-0.23%; S2. Prepare an aluminum-based master alloy by mixing 50% aluminum-based niobium and 50% MB11, wherein: The niobium content in aluminum-based niobium is 0.009-0.0135wt%, while MB11 contains niobium 0.15-0.3wt%, zirconium 0.05-0.15wt%, boron 0.01-0.03wt%, titanium 0.02-0.05wt%, and the balance is aluminum; S3. Select high-strength carbon steel wire 1, soak it in an alkaline detergent at 50°C for 10 minutes, then rinse it with clean water, then pickle it in a hydrochloric acid solution with a concentration of 15% and a temperature of 30°C for 5 minutes, finally rinse it with clean water and dry it; S4, adding the raw materials obtained from S1 and S2 into a melting furnace, melting at 730°C, stirring for 22 minutes, and passing the steel wire obtained from S3 through an extrusion die at a speed of 3m / min, with an equipment pressure of 9MPa and a temperature of 700°C, to form an aluminum-steel bonded penetration layer 11 of 8-10µm; S5, feed the electrical aluminum into a multi-pass continuous wire drawing machine to draw aluminum wire at a speed of 20 m / min, a speed of 15 m / min, and a tension of 40 N; S6. The drawn aluminum wire is introduced into a stranding machine. The spiral pitch during stranding is 10-15 times the diameter of the aluminum stranded wire 12. The aluminum stranded wire 12 is wound and stranded at a speed of 12 m / min and a tension of 60 N.

[0031] The stranding machine includes a base 2, on the top of which are fixedly provided with a fixed plate 21, a first mounting seat 22, a second mounting seat 23 and a third mounting seat 24 which are parallel to each other. The first mounting seat 22 is provided with two, and a mounting roller 3 is rotatably installed between the two first mounting seats 22. A synchronous wheel 4 is rotatably installed on the second mounting seat 23. A power mechanism 5 for driving the mounting roller 3 and the synchronous wheel 4 to rotate synchronously is commonly installed on the base 2, the fixed plate 21 and the second mounting seat 23. The centers of the mounting roller 3 and the synchronous wheel 4 are penetrated by a center hole 6 for the carbon steel wire to pass through. A plurality of groups of mounting mechanisms 7 for installing aluminum wire are evenly arranged on the roller surface of the mounting roller 3. The synchronous wheel 4 is penetrated by through holes 41 evenly distributed about the axis of the synchronous wheel 4 and for the aluminum wire to pass through. A through hole 241 is provided on the third mounting seat 24 for the stranded carbon steel wire and aluminum wire to pass through. A pulling mechanism (existing technology, not shown in the figure) for pulling the stranded carbon steel wire and aluminum wire forward is also provided on the top of the base 2.

[0032] The power mechanism 5 drives the installation roller 3 and the synchronous wheel 4 to rotate synchronously, and the pulling mechanism pulls the twisted carbon steel wire and aluminum wire forward, so that the aluminum wire on the installation mechanism 7 is gradually wrapped around the carbon steel wire after passing through the synchronous wheel 4 to complete the twisting of the corrosion-resistant stranded wire.

[0033] An arc plate 31 coaxially arranged therewith is fixed on the roller surface of the mounting roller 3. The mounting mechanism 7 includes a mounting assembly 71 and a storage assembly 72. The mounting assembly 71 is provided with two groups and is respectively located near the two ends of the arc plate 31. The mounting assembly 71 includes an L-shaped plate 711 fixed to the top of the arc plate 31 and a side plate 712 provided on the top of the horizontal section of the L-shaped plate 711. The storage assembly 72 includes a connecting plate 721 provided between the two side plates 712 in the same group of mounting units. The connecting plates 721 are provided with two and are parallel to each other. The storage assembly 72 also includes a storage roller 722 rotatably installed between the two connecting plates 721 and used for winding and storing aluminum wire. Two parallel inclined troughs 7 are provided on the side plate 712. 121, a connecting rod 7211 that slides with the chute body 7121 is fixed on the side of the connecting plate 721 away from the storage roller 722, the mounting mechanisms 7 are arranged in pairs and are mirror images of each other, and multiple pairs of mounting mechanisms 7 are evenly distributed around the mounting roller 3, and mounting blocks 8 are fixed on the side of the connecting rod 7211 away from the axis of the mounting roller 3 and the side of the chute body 7121 away from the axis of the mounting roller 3, and a clamping spring 81 is fixed between the two mounting blocks 8; an installation cavity 32 is provided in the mounting roller 3, and a driving mechanism 9 for driving the storage rollers 722 in the paired mounting mechanisms 7 to move away from each other, and the storage rollers 722 in the multiple pairs of mounting mechanisms 7 on the side of the mounting roller 3 are synchronously moved away from the axis of the mounting roller 3 under the action of the driving mechanism 9.

[0034] Different types of stranded wires require different tensions when wound around the steel wires. The staff can drive the storage rollers 722 in the paired installation mechanisms 7 away from each other through the driving mechanism 9 according to the needs, and at the same time, the storage rollers 722 are synchronously moved away from the axis of the installation roller 3 under the action of the driving mechanism 9, so that the relative distance between the two storage rollers 722 and the distance between the two storage rollers 722 and the axis of the installation roller 3 can be adjusted, so that the aluminum wire that is passed by the storage roller 722 on the side close to the fixed plate 21 around the other storage roller 722 can be tightened, so as to adjust the tension of the aluminum wire, thereby processing stranded wires with aluminum wires of different tensions.

[0035] The driving mechanism 9 includes a transmission assembly 91 and a driving assembly 92. The number of transmission assemblies 91 is equal to the number of pairs of mounting mechanisms 7 and their positions correspond one to one. The transmission assembly 91 includes a T-shaped rod body 911 that is arranged through the side wall of the mounting roller 3 and slides together, a push rod 912 fixed to one end of the T-shaped rod body 911 located in the mounting cavity 32, a pushing block 913 fixed to the end of the T-shaped rod body 911 away from the axis of the mounting roller 3, and a pushing plate 914 fixed to one side of the connecting plate 721. The T-shaped rod body 911 is located in the middle of the two paired mounting mechanisms 7. There are two pushing blocks 913 and they are mirror images of each other. The cross-section of the pushing block 913 and the cross-section of the pushing plate 914 are both right-angled trapezoids. The sides of the pushing block 913 and the pushing plate 914 that are close to each other are both inclined surfaces and abut each other. The driving assembly 92 acts on the push rods 912 in multiple groups of transmission assemblies 91 and simultaneously controls the multiple groups of T-shaped rod bodies 911 to move toward or away from the axis of the mounting roller 3.

[0036] The driving assembly 92 includes a sleeve 921 rotatably mounted on the inner wall of the mounting cavity 32 on the side away from the fixed plate 21, a rotating plate 922 fixed to the end of the sleeve 921 close to the fixed plate 21, an internal driven gear 923 fixedly sleeved on the sleeve 921, a driving motor 924 fixed on the inner wall of the mounting cavity 32 on the side away from the fixed plate 21, and an internal driving gear 925 fixed to the output end of the driving motor 924 and meshing with the internal driven gear 923. A center hole 6 for the carbon steel wire to pass through is also penetrated on the rotating plate 922. A circular arc-shaped hole body 9221 for sliding cooperation with the push rods 912 in the multiple groups of transmission assemblies 91 is penetrated on the rotating plate 922. The circular arc-shaped hole body 9221 is eccentrically arranged with the center hole 6, and the end of the circular arc-shaped hole body 9221 close to the center hole 6 is arranged near the axis of the center hole 6.

[0037] After the drive motor 924 is started, the drive motor 924 drives the internal driving gear 925 fixed to its output end to rotate, thereby causing the internal driven gear 923 meshing with the internal driving gear 925, the sleeve 921 fixed to the internal driven gear 923, and the rotating plate 922 fixed to the sleeve 921 to rotate. Since the multiple arc-shaped holes 9221 on the rotating plate 922 respectively slide with the push rods 912 in the multiple groups of transmission components 91, the multiple T-shaped rods 911 are respectively moved synchronously toward or away from the axis of the installation roller 3 under the action of their respective corresponding push rods 912, so that the relative distance between the two paired storage rollers 722 can be adjusted to adjust the tension of the aluminum wire to an appropriate size.

[0038] A dovetail block 7122 is fixed to the bottom of the side plate 712, and a slide groove 7111 for sliding cooperation of the dovetail block 7122 is provided on the top of the horizontal section of the L-shaped plate 711. A positioning slide hole 7112 perpendicular to and connected to the slide groove 7111 and a mounting hole 7113 fixed to and connected to the side of the positioning slide hole 7112 away from the slide groove 7111 are provided on the side wall of the horizontal section of the L-shaped plate 711. 2, the positioning assembly 10 includes a positioning rod 101 that slides with the positioning slide hole 7112 and abuts against the side of the dovetail block 7122 away from the storage roller 722, a connecting column 102 fixed to the end of the positioning rod 101 away from the slide groove 7111, an end plate 103 fixed to the end of the connecting column 102 away from the slide groove 7111, and a positioning spring 104 that is sleeved on the connecting column 102 and fixed between the inner wall of the mounting hole 7113 and the end plate 103.

[0039] When the aluminum wire on the storage roller 722 is used up, the staff only needs to pull the end plate 103 to make the positioning rod 101 retract into the positioning slide hole 7112, so that the dovetail block 7122 slides along the slide groove 7111, thereby facilitating the disassembly of the storage roller 722 and replacing the storage roller 722 with a new aluminum wire roll.

[0040] The power mechanism 5 includes a controller 51 fixed to the top of the base 2, an active rod 52 rotatably mounted on the fixed plate 21, a first driving gear 53 fixed to the end of the active rod 52, a first power motor 54 fixed to the fixed plate 21 and fixed to one end of the active rod 52, a first driven gear 55 rotatably mounted on one end of the mounting roller 3 and meshing with the first driving gear 53, a second driving gear 56 rotatably mounted on the second mounting seat 23, a second power motor 57 fixed on the second mounting seat 23 and driving the second driving gear 56 to rotate, and a second driven gear 58 fixedly sleeved on the synchronous wheel 4 and meshing with the second driving gear 56. The first power motor 54, the second power motor 57 and the drive motor 924 are all electrically connected to the controller 51.

[0041] The staff can control the first power motor 54 and the second power motor 57 to run synchronously through the controller 51. In this embodiment, the first driven gear 55 and the second driven gear 58 are the same size, and the first driving gear 53 and the second driving gear 56 are the same size, so that the installation roller 3 and the synchronous wheel 4 rotate synchronously. Under the action of the pulling mechanism, the aluminum wire released from the installation roller 3 passes through the perforation 41 on the synchronous wheel 4 and is twisted onto the carbon steel wire.

[0042] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A corrosion-resistant stranded wire, characterized by: The invention comprises a plurality of high-strength carbon steel wires (1) arranged in parallel and closely, each of the high-strength carbon steel wires (1) is extruded with an aluminum-steel combined penetration layer (11), and a plurality of aluminum strands (12) are uniformly spirally wound around the outer sides of the plurality of high-strength carbon steel wires (1); The aluminum-steel bonded penetration layer (11) comprises the following components in terms of weight percentage: 0.12-0.23% aluminum-based cerium-rich rare earth, 0.18-0.27% aluminum-based master alloy, and the balance being aluminum.

2. The corrosion-resistant stranded wire according to claim 1, wherein: In terms of weight percentage, the aluminum-based master alloy includes the following components: aluminum-based niobium 50%, MB11 50%; Among them, the niobium content in aluminum-based niobium is 0.009-0.0135wt%; MB11 contains niobium, zirconium, boron, titanium, and aluminum. The content of each element is: niobium 0.15-0.3wt%, zirconium 0.05-0.15wt%, boron 0.01-0.03wt%, titanium 0.02-0.05wt%, and the balance is aluminum.

3. The corrosion-resistant stranded wire according to claim 2, wherein: The thickness of the aluminum-steel bonded penetration layer (11) is 8-10µm.

4. A process for processing the corrosion-resistant stranded wire according to any one of claims 1 to 3, characterized in that: The steps include: S1, weighing aluminum-based cerium-rich rare earth so that its weight percentage in the aluminum-steel combined penetration layer (11) is 0.12-0.23%; S2. Prepare an aluminum-based master alloy by mixing 50% aluminum-based niobium and 50% MB11, wherein: The niobium content in aluminum-based niobium is 0.009-0.0135wt%, while MB11 contains niobium 0.15-0.3wt%, zirconium 0.05-0.15wt%, boron 0.01-0.03wt%, titanium 0.02-0.05wt%, and the balance is aluminum; S3. Select high-strength carbon steel wire (1), soak it in an alkaline detergent at 50°C for 10 minutes, then rinse it with clean water, then pickle it in a hydrochloric acid solution with a concentration of 15% and a temperature of 30°C for 5 minutes, and finally rinse it with clean water and dry it; S4, adding the raw materials obtained from S1 and S2 into a melting furnace, melting at 730°C, stirring for 22 minutes, passing the steel wire obtained from S3 through an extrusion die at a speed of 3m / min, with an equipment pressure of 9MPa and a temperature of 700°C, to form an aluminum-steel bonding penetration layer (11) of 8-10µm; S5, feed the electrical aluminum into a multi-pass continuous wire drawing machine to draw aluminum wire at a speed of 20 m / min, a speed of 15 m / min, and a tension of 40 N; S6. The drawn aluminum wire is introduced into a stranding machine. During stranding, the spiral pitch is 10-15 times the diameter of the aluminum strand (12). The aluminum strand (12) is wound at a speed of 12 m / min and a tension of 60 N for stranding.

5. The processing technology of the corrosion-resistant stranded wire according to claim 4, characterized in that: The stranding machine comprises a base (2), wherein a fixed plate (21), a first mounting seat (22), a second mounting seat (23) and a third mounting seat (24) which are parallel to each other are fixed in sequence on the top of the base (2), two first mounting seats (22) are provided, a mounting roller (3) is rotatably mounted between the two first mounting seats (22), a synchronous wheel (4) is rotatably mounted on the second mounting seat (23), and a power machine for driving the mounting roller (3) and the synchronous wheel (4) to rotate synchronously is commonly mounted on the base (2), the fixed plate (21) and the second mounting seat (23). The mounting roller (3) and the synchronous wheel (4) are both provided with a center hole (6) through which the carbon steel wire passes, a plurality of mounting mechanisms (7) for mounting the aluminum wire are evenly arranged on the roller surface of the mounting roller (3), the synchronous wheel (4) is provided with through holes (41) evenly distributed about the axis of the synchronous wheel (4) and for the aluminum wire to pass through, the third mounting seat (24) is provided with a through hole (241) through which the twisted carbon steel wire and the aluminum wire pass, and the top of the base (2) is also provided with a pulling mechanism for pulling the twisted carbon steel wire and the aluminum wire forward.

6. The process for processing a corrosion-resistant stranded wire according to claim 4, characterized in that: A circular arc plate (31) coaxially arranged therewith is fixed on the roller surface of the mounting roller (3). The mounting mechanism (7) comprises a mounting assembly (71) and a storage assembly (72). The mounting assembly (71) is provided with two groups and is respectively located near the two ends of the circular arc plate (31). The mounting assembly (71) comprises an L-shaped plate (711) fixed to the top of the circular arc plate (31) and a side plate (712) provided at the top of the horizontal section of the L-shaped plate (711). The storage assembly (72) comprises a connecting plate (721) provided between the two side plates (712) in the same mounting unit. The connecting plates (721) are provided with two and are parallel to each other. The storage assembly (72) also comprises a connecting plate (721) rotatably mounted on the mounting unit. A storage roller (722) is provided between the two connecting plates (721) and is used for winding and storing aluminum wire. Two parallel inclined trough bodies (7121) are provided through the side plate body (712). A connecting rod (7211) that is slidably matched with the inclined trough body (7121) is fixed on the side of the connecting plate (721) away from the storage roller (722). The mounting mechanisms (7) are arranged in pairs and are mirror images of each other. Multiple pairs of mounting mechanisms (7) are evenly distributed around the mounting roller (3). A mounting block (8) is fixed on the side of the connecting rod (7211) away from the axis of the mounting roller (3) and the side of the inclined trough body (7121) away from the axis of the mounting roller (3). A pressing spring (81) is fixed between the two mounting blocks (8). An installation cavity (32) is provided in the installation roller (3), and a driving mechanism (9) is provided in the installation cavity (32) for driving storage rollers (722) in the installation mechanisms (7) arranged in pairs to move away from each other. The storage rollers (722) in the multiple pairs of installation mechanisms (7) on the peripheral side of the installation roller (3) are synchronously moved away from the axis of the installation roller (3) under the action of the driving mechanism (9).

7. The processing technology of the corrosion-resistant stranded wire according to claim 6, characterized in that: The driving mechanism (9) includes a transmission assembly (91) and a driving assembly (92). The number of transmission assemblies (91) is equal to the number of pairs of the mounting mechanism (7) and the positions correspond one to one. The transmission assembly (91) includes a T-shaped rod (911) that is provided through the side wall of the mounting roller (3) and is slidably matched, a push rod (912) that is fixed to one end of the T-shaped rod (911) located in the mounting cavity (32), a push block (913) that is fixed to one end of the T-shaped rod (911) away from the axis of the mounting roller (3), and a push block (913) that is fixed to one side of the connecting plate (721). The plate (914) and the T-shaped rod body (911) are located in the middle of the two paired installation mechanisms (7). Two pushing blocks (913) are provided and are mirror images of each other. The cross section of the pushing block (913) and the cross section of the pushing plate (914) are both right-angled trapezoids. The sides of the pushing block (913) and the pushing plate (914) that are close to each other are both inclined surfaces and abut against each other. The driving component (92) acts on the push rods (912) in the multiple transmission components (91) and simultaneously controls the multiple T-shaped rod bodies (911) to move toward or away from the axis of the installation roller (3).

8. The process for processing a corrosion-resistant stranded wire according to claim 7, wherein: The driving assembly (92) includes a sleeve (921) rotatably mounted on the inner wall of the mounting cavity (32) away from the fixed plate (21), a rotating plate (922) fixed to one end of the sleeve (921) close to the fixed plate (21), an internal driven gear (923) fixedly sleeved on the sleeve (921), a driving motor (924) fixed to the inner wall of the mounting cavity (32) away from the fixed plate (21), and a rotating plate (922) fixed to the output end of the driving motor (924) and connected to the internal driven gear. The inner driving gear (925) is meshed with the gear (923), and the rotating plate (922) is also provided with a central hole (6) for the carbon steel wire to pass through. The rotating plate (922) is provided with an arc-shaped hole body (9221) for sliding cooperation with the push rods (912) in the multiple transmission components (91). The arc-shaped hole body (9221) is eccentrically arranged with the central hole (6), and the end of the arc-shaped hole body (9221) close to the central hole (6) is arranged near the axis of the central hole (6).

9. The process for processing a corrosion-resistant stranded wire according to claim 8, characterized in that: A dovetail block (7122) is fixed to the bottom of the side plate (712), a slide groove (7111) for sliding engagement with the dovetail block (7122) is provided at the top of the horizontal section of the L-shaped plate (711), and a positioning slide hole (7112) perpendicular to and connected to the slide groove (7111) and a mounting hole (7113) fixed to and connected to a side of the positioning slide hole (7112) away from the slide groove (7111) are provided through the side wall of the horizontal section of the L-shaped plate (711); A positioning assembly (10) for fixing the side plate (712) is provided on the horizontal section of the L-shaped plate (711), and the positioning assembly (10) includes a positioning rod (101) that is slidably matched with the positioning slide hole (7112) and abuts against the side of the dovetail block (7122) away from the storage roller (722), a connecting column (102) fixed to the end of the positioning rod (101) away from the slide groove (7111), an end plate (103) fixed to the end of the connecting column (102) away from the slide groove (7111), and a positioning spring (104) sleeved on the connecting column (102) and fixed between the inner wall of the mounting hole (7113) and the end plate (103).

10. The process for processing a corrosion-resistant stranded wire according to claim 8, wherein: The power mechanism (5) comprises a controller (51) fixed on the top of the base (2), an active rod (52) rotatably mounted on the fixed plate (21), a first active gear (53) fixed to the end of the active rod (52), a first power motor (54) fixed on the fixed plate (21) and fixed to one end of the active rod (52), a first driven gear (55) rotatably mounted on one end of the mounting roller (3) and meshed with the first active gear (53), a second active gear (56) rotatably mounted on the second mounting seat (23), a second power motor (57) fixed on the second mounting seat (23) and driving the second active gear (56) to rotate, and a second driven gear (58) fixedly sleeved on the synchronous wheel (4) and meshed with the second active gear (56). The first power motor (54), the second power motor (57) and the drive motor (924) are all electrically connected to the controller (51).

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