Alloy strand stress relieving device

Abstract

This utility model relates to the field of wire processing technology, specifically a stress relief device for alloy stranded wire. It includes a pay-off assembly, a frame, a heating assembly, a nitrogen generating assembly, a conveying pipe, a conductor assembly, a cleaning assembly, and a take-up assembly. The pay-off assembly is located on one side of the frame and is used to pay the stranded wire towards the conveying pipe. A stress relief box is provided on the surface of the frame. The conveying pipe is disposed within the stress relief box. The heating assembly is disposed within the stress relief box and located outside the conveying pipe to heat the conveying pipe. The nitrogen generating assembly has an inflation pipe connected to the conveying pipe for filling the conveying pipe with nitrogen, creating an atmosphere within the conveying pipe. This utility model effectively eliminates stress within the stranded wire, improves its overall performance and stability, and ensures that the stranded wire will not disperse in practical applications.

Description

Technical Field

[0001] This utility model relates to the field of wire processing technology, and in particular to a stress relief device for alloy stranded wire. Background Technology

[0002] In the manufacturing and application of alloy stranded wire, existing stress relief methods have revealed many shortcomings in actual operation, especially in terms of stress relief effect. This leads to frequent unraveling of stranded wire during subsequent use, which seriously affects its mechanical properties and service life.

[0003] Alloy stranded wire, as a high-performance material, is widely used in aerospace, power transmission, and building structures. Its unique multi-strand structure is designed to provide superior strength, flexibility, and corrosion resistance. However, internal stresses are inevitably generated during the manufacturing process of stranded wire. These stresses originate from the plastic deformation of the metal material, temperature changes during heat treatment, and mechanical forces during assembly. Failure to effectively remove these stresses will directly lead to a decline in the mechanical properties of the stranded wire, especially under dynamic loads or environmental stresses, easily triggering failure modes such as unraveling and fracture.

[0004] Currently, common stress relief methods include heat treatment, mechanical vibration, and chemical treatment. However, these methods have certain limitations in practical applications. For example, while traditional heat treatment can alleviate stress to some extent, high-temperature treatment may cause changes in the material's microstructure, thus affecting its mechanical properties; mechanical vibration, although simple to operate, often results in uneven stress relief for complex stranded wires; and chemical treatment may introduce new impurities, affecting the material's purity and long-term stability. Therefore, new and improved designs are needed for stress relief in existing stranded wires. Utility Model Content

[0005] To solve the above problems, this utility model is an alloy strand stress removal device that effectively eliminates the stress in the strands, improves its overall performance and stability, and ensures that the strands will not disperse in practical applications.

[0006] The technical solution adopted by this utility model is: an alloy strand stress relief device, including a pay-off assembly, a frame, a heating assembly, a nitrogen generating assembly, a conveying pipe, a conductor assembly, a cleaning assembly, and a take-up assembly. The pay-off assembly is located on one side of the frame and is used to pay the strand towards the conveying pipe. A stress relief box is provided on the surface of the frame. The conveying pipe is located inside the stress relief box. The heating assembly is located inside the stress relief box and outside the conveying pipe to heat the conveying pipe. The nitrogen generating assembly is provided with an inflation pipe connected to the conveying pipe and is used to fill the conveying pipe with nitrogen to form an atmosphere inside the conveying pipe. The conductor assembly is used to guide the alloy strand towards the cleaning assembly. The cleaning assembly cleans the alloy strand. The take-up assembly is used to wind up the cleaned alloy strand.

[0007] A further improvement to the above solution is that the wire feeding assembly includes a base frame, a wire feeding machine housing, a wire feeding roller, a wire feeding guide frame, and a wire feeding guide wheel. The wire feeding machine housing is mounted on the base frame, the wire feeding roller is mounted on one side of the wire feeding machine housing, the wire feeding guide frame is mounted on the upper side of the wire feeding machine housing, and the wire feeding guide wheel is mounted on the wire feeding guide frame. The wire feeding roller is used to feed wire toward the wire feeding guide wheel, and the wire feeding guide wheel is used to feed the wire toward the conveying pipeline.

[0008] A further improvement to the above solution is that the frame is provided with a placement rack and a workbench, the placement rack is located below the workbench, the placement rack is used to install the nitrogen generating assembly, and the stress relief box is placed on the workbench.

[0009] A further improvement to the above solution is that the stress relief box includes a lower box and an upper box, the upper box is connected to the lower box, the conveying pipe is set on the lower box, and an exhaust pipe is set at the top of the lower box; ceramic rings are set at both ends of the conveying pipe, and the ceramic rings are used for the introduction and export of alloy stranded wire.

[0010] A further improvement to the above scheme is that the heating assembly includes multiple heating elements, which are arranged sequentially along the conveying direction of the conveying pipe. Each heating element is a heating coil, which is spirally wound around the outside of the conveying pipe. The heating temperature of the multiple heating elements increases sequentially.

[0011] A further improvement to the above scheme is that the nitrogen generating component includes a control host and a gas storage tank. The control host is used to generate nitrogen and deliver it to the gas storage tank. The gas storage tank is used to store nitrogen. The filling pipe is used to connect the gas storage tank to the delivery pipe to keep the delivery pipe filled with nitrogen.

[0012] A further improvement to the above solution is that the conductor assembly includes a conductor frame, a conductor guide frame, and a conductor support. The conductor frame is mounted on a frame, the conductor guide frame is provided with a guide rod, the conductor support is located at one end of the conductor frame, the conductor support has multiple conductor arms, and the conductor arms are provided with conductor wheels. The conductor wheels are used to guide the wire toward the take-up assembly.

[0013] A further improvement to the above solution is that the cleaning component includes a cleaning bracket and a cleaning sleeve. The cleaning bracket is mounted on the lead wire arm, and the cleaning sleeve is mounted on the cleaning bracket. A cleaning channel is provided inside the cleaning sleeve, and a cleaning air pipe interface is provided on the outside of the cleaning sleeve for connecting to an air pipe to supply air for cleaning the wires in the cleaning channel.

[0014] A further improvement to the above solution is that the take-up assembly includes a take-up housing, a take-up guide roller, and a take-up roller. The take-up guide roller and the take-up roller are both disposed inside the take-up housing. The take-up guide roller is used to guide the wire toward the take-up roller for winding the alloy stranded wire.

[0015] The beneficial effects of this utility model are:

[0016] Compared to existing stress relief methods for alloy strands, this novel stress relief box provides a closed processing environment for the strands, while the heating component heats the strands at a suitable temperature by externally heating the conveying pipe. This effectively relaxes the internal stress of the strands, making their structure more stable. Compared to traditional stress relief methods, this device can heat the strands more evenly, avoiding local overheating or uneven heating, thus ensuring the effectiveness of stress relief. A nitrogen generating component fills the conveying pipe with nitrogen through an inflation pipe, creating a protective atmosphere. This prevents oxidation of the strands at high temperatures and further enhances the stress relief effect. As an inert gas, nitrogen maintains the chemical stability of the strands at high temperatures, preventing surface oxidation and ensuring that the physical and chemical properties of the strands are not damaged. Furthermore, the nitrogen protective atmosphere helps improve the surface finish of the strands, providing a good foundation for subsequent processing and use. The cleaning component cleans the strands after stress relief treatment, removing any small particles and impurities that may be present on the surface. This is crucial for ensuring the quality of the strands. The efficient cleaning process not only improves the surface quality of the strands but also enhances their bonding performance with other materials, providing a reliable guarantee for subsequent processing and applications. The take-up assembly is responsible for winding the cleaned strands, ensuring that the strands are not subjected to new stress during the winding process. It can adjust the winding tension according to the characteristics of the strands, avoiding the formation of new stress concentration points during winding. This ensures the neatness of the strands and further consolidates the stress removal effect, ensuring that the strands do not disperse during subsequent use. This invention achieves optimal results in all aspects of stress removal, protection, cleaning, and winding. It improves production efficiency and significantly enhances the overall quality of the strands. By precisely controlling the parameters of each stage, the device can effectively manage the stress of the strands, ensuring their stability and reliability in various application scenarios. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the alloy strand stress relief device of this utility model;

[0018] Figure 2 for Figure 1 A three-dimensional schematic diagram of a medium alloy strand stress relief device from another perspective;

[0019] Figure 3 for Figure 1 A three-dimensional schematic diagram of a medium alloy strand stress relief device from another perspective;

[0020] Figure 4 for Figure 1 Front view schematic diagram of a medium alloy stranded wire stress relief device;

[0021] Figure 5 for Figure 1 Schematic diagram of the internal structure of the conveying pipeline of the medium alloy stranded wire stress relief device;

[0022] Figure 6 for Figure 1 A schematic diagram of the cleaning component of the medium alloy strand stress relief device;

[0023] Figure 7 This is a schematic flowchart of the stress removal method for alloy stranded wire according to this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Wire feeding assembly; 11. Base frame; 12. Wire feeding machine housing; 13. Wire feeding roller; 14. Wire feeding guide frame; 15. Wire feeding guide wheel; 2. Frame; 21. Stress relief box; 211. Lower housing; 212. Upper housing; 213. Exhaust pipe; 22. Placement rack; 23. Workbench; 3. Heating assembly; 3. Heating element; 31. Nitrogen generating assembly; 4. Inflation pipe; 41. Control host; 42. Gas storage tank; 43. Conveying pipe; 5. Ceramic ring; 51. Wire guide assembly; 6. Wire guide frame; 61. Wire guide frame; 62. Guide rod; 621. Wire support; 63. Wire arm; 631. Wire wheel; 632. Cleaning assembly; 7. Cleaning support; 71. Cleaning sleeve; 721. Cleaning air pipe interface; 721. Take-up assembly; 8. Take-up machine housing; 81. Take-up guide wheel; 82. Take-up roller; 83. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-6As shown, in one embodiment of this utility model, a stress relief device for alloy stranded wire is disclosed, comprising a wire feeding assembly 1, a frame 2, a heating assembly 3, a nitrogen generating assembly 4, a conveying pipe 5, a conductor assembly 6, a cleaning assembly 7, and a take-up assembly 8. The wire feeding assembly 1 is located on one side of the frame 2 and is used to feed the stranded wire toward the conveying pipe 5. A stress relief box 21 is provided on the surface of the frame 2. The conveying pipe 5 is disposed inside the stress relief box 21. The heating assembly 3 is disposed inside the stress relief box 21 and located outside the conveying pipe 5 to heat the conveying pipe 5. The nitrogen generating assembly 4 is provided with an inflation pipe 41 connected to the conveying pipe 5 and is used to fill the conveying pipe 5 with nitrogen to form an atmosphere inside the conveying pipe 5. The conductor assembly 6 is used to guide the alloy stranded wire toward the cleaning assembly 7. The cleaning assembly 7 cleans the alloy stranded wire. The take-up assembly 8 is used to take up the cleaned alloy stranded wire. The stress relief box 21 of this invention provides a closed processing environment for the stranded wire, while the heating component 3 heats the stranded wire at a suitable temperature by externally heating the conveying pipe 5. This effectively relaxes the internal stress of the stranded wire, making its structure more stable. Compared with traditional stress relief methods, this device can heat the stranded wire more evenly, avoiding problems such as local overheating or uneven heating, thus ensuring the effect of stress relief. The nitrogen generating component 4 fills the conveying pipe 5 with nitrogen through the gas filling pipe 41, forming a protective atmosphere. This can prevent the stranded wire from oxidizing at high temperatures and further improve the stress relief effect. As an inert gas, nitrogen can maintain the chemical stability of the stranded wire at high temperatures, preventing oxidation reactions on its surface, thus ensuring that the physical and chemical properties of the stranded wire are not damaged. In addition, the nitrogen protective atmosphere also helps to improve the surface smoothness of the stranded wire, providing a good foundation for its subsequent processing and use. The cleaning component 7 cleans the stranded wire after stress relief treatment, removing any small particles and impurities that may be present on the surface of the stranded wire. This is crucial for ensuring the quality of the stranded wire. The efficient cleaning process not only improves the surface quality of the strands but also enhances their bonding performance with other materials, providing a reliable guarantee for subsequent processing and applications. The take-up assembly 8 is responsible for winding the cleaned strands, ensuring that the strands are not subjected to new stress during the winding process. It can adjust the winding tension according to the characteristics of the strands, avoiding the formation of new stress concentration points during winding. This ensures the neatness of the strands and further consolidates the stress removal effect, ensuring that the strands do not disperse during subsequent use. This invention achieves optimal results in all aspects of stress removal, protection, cleaning, and winding. It improves production efficiency and significantly enhances the overall quality of the strands. By precisely controlling the parameters of each step, the device can effectively manage the stress of the strands, ensuring their stability and reliability in various application scenarios.

[0028] The wire feeding assembly 1 includes a base frame 11, a wire feeding machine housing 12, a wire feeding roller 13, a wire feeding guide frame 14, and a wire feeding guide wheel 15. The wire feeding machine housing 12 is mounted on the base frame 11, the wire feeding roller 13 is mounted on one side of the wire feeding machine housing 12, the wire feeding guide frame 14 is mounted on the upper side of the wire feeding machine housing 12, and the wire feeding guide wheel 15 is mounted on the wire feeding guide frame 14. The wire feeding roller 13 feeds wire toward the wire feeding guide wheel 15, and the wire feeding guide wheel 15 feeds the wire toward the conveying pipe 5. In this embodiment, the base frame 11 serves as the basic support structure for the entire wire feeding assembly 1, ensuring the stable installation of the wire feeding machine housing 12, the wire feeding roller 13, the wire feeding guide frame 14, and the wire feeding guide wheel 15, effectively preventing component displacement due to vibration or external force, thereby ensuring the accuracy and continuity of the wire feeding process. The wire feeding machine housing 12, mounted on the base frame 11, provides an installation position for the wire feeding roller 13 and the wire feeding guide frame 14. The pay-off roller 13 is located on one side of the pay-off machine housing 12. It can efficiently release the alloy stranded wire from its stored state. Its rotation speed and force can be precisely controlled to ensure that the wire is not damaged during the pay-off process and maintains its original physical properties. The pay-off guide frame 14 is located on the upper side of the pay-off machine housing 12, and the pay-off guide wheel 15 is mounted on it, forming an effective guide. The pay-off guide wheel 15 can ensure that the wire enters the next process smoothly and without twisting while minimizing friction loss.

[0029] The frame 2 is equipped with a placement rack 22 and a workbench 23. The placement rack 22 is located below the workbench 23 and is used to install the nitrogen generating assembly 4. The stress relief box 21 is mounted on the workbench 23. In this embodiment, the layered design of the placement rack 22 and the workbench 23 effectively utilizes vertical space, allowing the nitrogen generating assembly 4 and the stress relief box 21 to each have independent working areas, avoiding mutual interference and ensuring the stability and safety of equipment operation. The nitrogen generating assembly 4 is placed below, which facilitates uniform gas distribution and efficient supply, providing a stable nitrogen environment for the stress relief process and helping to improve the processing quality of the alloy stranded wire. The stress relief box 21 is mounted on the workbench 23, which facilitates monitoring and adjustment by the operator, improving work efficiency.

[0030] The stress relief chamber 21 includes a lower chamber 211 and an upper chamber 212, with the upper chamber 212 connected to the lower chamber 211. A conveying pipe 5 is installed on the lower chamber 211, and an exhaust pipe 213 is installed at the top of the lower chamber 211. Ceramic rings 51 are installed at both ends of the conveying pipe 5 for the introduction and exit of alloy stranded wire. In this embodiment, the tight connection between the lower chamber 211 and the upper chamber 212 ensures the structural stability and sealing of the entire device, effectively preventing the influence of the external environment on internal operations and guaranteeing the purity and efficiency of the stress relief process. The conveying pipe 5, located inside the lower chamber 211, combined with the ceramic rings 51 at both ends, not only enables the smooth introduction and exit of the alloy stranded wire but also avoids secondary stress or damage that may be caused by metal components, greatly improving the integrity and performance stability of the material. The exhaust pipe 213 at the top of the lower chamber 211 can promptly discharge waste gas or excess gas from inside the device, maintaining internal pressure balance and further optimizing the environmental conditions for stress relief. This effectively avoids material deformation or uneven stress caused by changes in air pressure, ensuring the uniformity and controllability of the processing.

[0031] The heating assembly 3 includes multiple heating elements 31, which are arranged sequentially along the conveying direction of the conveying pipe 5. Each heating element 31 is a heating coil, spirally wound around the outside of the conveying pipe 5. The heating temperatures of the multiple heating elements 31 increase sequentially. In this embodiment, the sequential arrangement of the multiple heating elements 31 along the conveying direction of the conveying pipe 5, and their spiral winding as heating coils, ensures uniform heating and effectively increases the heating area, allowing the alloy stranded wire to undergo sufficient heat treatment as it passes through the conveying pipe 5. More importantly, the sequentially increasing heating temperatures of the multiple heating elements 31 allow for a gradual release of internal stress in the alloy stranded wire during the gradual heating process, avoiding material damage or performance degradation caused by sudden temperature changes. The gradual heating design also helps optimize the microstructure of the alloy stranded wire, promoting grain refinement and reducing dislocation density, thereby further improving the mechanical properties and durability of the material. It improves stress removal efficiency and significantly enhances the overall quality of the alloy stranded wire, providing a more reliable material basis for subsequent processing and applications.

[0032] The nitrogen generating assembly 4 includes a control host 42 and a gas storage tank 43. The control host 42 generates nitrogen and supplies it to the gas storage tank 43, which stores the nitrogen. A filling pipe 41 connects the gas storage tank 43 to the delivery pipe 5 to maintain nitrogen filling in the delivery pipe 5. In this embodiment, the control host 42 efficiently generates nitrogen and supplies it to the gas storage tank 43, ensuring a stable nitrogen supply and maintaining the chemical stability of the alloy stranded wire during processing. The gas storage tank 43, as a nitrogen storage unit, not only ensures sufficient nitrogen reserves but also effectively regulates nitrogen pressure through its buffering effect, preventing stress anomalies caused by pressure fluctuations. The filling pipe 41 connects the gas storage tank 43 to the delivery pipe 5, ensuring that nitrogen can uniformly and continuously fill the delivery pipe 5, thereby creating an inert gas protective environment during the transmission of the alloy stranded wire. This effectively isolates reactive gases such as oxygen, preventing oxidation reactions in the alloy stranded wire during high-temperature stress removal, thus improving the surface quality and mechanical properties of the stranded wire. The inert properties of nitrogen help reduce stress concentration inside the material, promote uniform stress distribution, and further enhance the fatigue resistance and service life of the strand.

[0033] The conductor assembly 6 includes a conductor frame 61, a conductor guide frame 62, and a conductor support 63. The conductor frame 61 is mounted on the frame 2. The conductor guide frame 62 is equipped with a guide rod 621. The conductor support 63 is located at one end of the conductor frame 61 and has multiple conductor arms 631. Each conductor arm 631 is equipped with a conductor wheel 632, which guides the conductor towards the take-up assembly 8. In this embodiment, the conductor frame 61 is stably mounted on the frame 2, ensuring the stability of the entire conductor assembly 6 and providing a solid foundation for subsequent operations. The guide rod 621 equipped on the conductor guide frame 62 can precisely control the path of the conductor, preventing deviation and tangling during transmission, thus ensuring smooth conductor delivery. The multiple conductor arms 631 on the conductor support 63 allow the conductor wheels 632 to be evenly distributed. Each conductor wheel 632 effectively guides the wire toward the take-up assembly 8, reducing friction during transmission and minimizing damage caused by friction, thus ensuring the integrity and quality of the wire. The rational layout and efficient operation of the conductor wheels 632 help to evenly distribute stress on the wire during transmission, thereby effectively removing stress and improving the mechanical and electrical properties of the alloy stranded wire.

[0034] The cleaning component 7 includes a cleaning bracket 71 and a cleaning sleeve 72. The cleaning bracket 71 is mounted on the guide arm 631, and the cleaning sleeve 72 is mounted on the cleaning bracket 71. The cleaning sleeve 72 has a cleaning channel inside and a cleaning air pipe interface 721 on its exterior for connecting to an air pipe to supply air and clean the wire within the cleaning channel. In this embodiment, the cleaning bracket 71 is stably mounted on the guide arm 631, ensuring the stability of the cleaning sleeve 72 during operation and preventing a decrease in cleaning effect due to vibration or displacement. The cleaning channel inside the cleaning sleeve 72 is cleverly designed to closely fit the wire surface, effectively removing impurities and oxide layers, ensuring the accuracy and reliability of subsequent processing. The cleaning air pipe interface 721 on the exterior of the cleaning sleeve 72 allows for air supply via an air pipe, using high-pressure gas to blow away the wire within the cleaning channel, further enhancing the cleaning effect. This pneumatic cleaning method not only improves cleaning efficiency but also reduces wire damage that may be caused by traditional mechanical cleaning, extending the wire's service life.

[0035] The take-up assembly 8 includes a take-up housing 81, a take-up guide roller 82, and a take-up roller 83. Both the take-up guide roller 82 and the take-up roller 83 are housed within the take-up housing 81. The take-up guide roller 82 guides the wire toward the take-up roller 83 for winding the alloy stranded wire. In this embodiment, the take-up housing 81 serves as the supporting structure for the entire assembly, providing a stable installation environment for the take-up guide roller 82 and the take-up roller 83, and effectively isolating external interference to ensure the stability of the winding process. The take-up guide roller 82 is ingeniously designed; its smooth surface and precise guiding function accurately guide the wire to the take-up roller 83, preventing wire deviation or knotting during winding and ensuring neat wire alignment. The take-up roller 83 ensures the winding speed of the alloy stranded wire while reducing frictional damage during winding, effectively protecting the surface quality and internal structure of the wire.

[0036] See Figures 1-7 As shown, a method for stress relief of alloy stranded wire, implemented using an alloy stranded wire stress relief device, includes the following steps:

[0037] Step S1, wire feeding guidance: The wire feeding roller 13 feeds the wire at a linear speed V1, and the wire enters the conveying pipe 5 through the wire feeding guide wheel 15; initial tension control: 5±0.5N, adjusted by the magnetic powder brake;

[0038] Step S2, gradient heating: The conveying pipe 5 is heated sequentially by the heating component 3. The heating includes: the first heating zone is maintained at 400°C, the second heating zone is maintained at 480°C, and the third heating zone is maintained at 520°C; the residence time in each temperature zone is: t=60 / (V1×k); k is the number of strands of the twisted wire, in seconds.

[0039] Step S3, Atmosphere control: Nitrogen gas is continuously introduced into the delivery pipeline 5, with an oxygen content ≤50ppm; Flow rate is dynamically adjusted: Q=0.5×D×V1; D is the pipeline diameter, in L / min;

[0040] Closed-loop regulation of oxygen content: When the oxygen sensor reading is greater than 50 ppm, the nitrogen flow rate is increased by 10%;

[0041] When the oxygen sensor reading is less than 10 ppm, the nitrogen flow rate is reduced by 5%.

[0042] Step S4, Cleaning treatment: Pulse airflow cleaning: pressure 0.4MPa, frequency 2Hz, gap between the inner wall of the 72802 cleaning sleeve and the wire 0.3mm; cleaning airflow composition: nitrogen 90%, argon 10%; contains 0.1% nano alumina particles, the particle size of which is 50nm;

[0043] Step S5, winding and forming: Linear speed of take-up roller 83 V2=V1×(1+αΔT); α=1.2×10⁻ 5 / ℃, ΔT is the temperature rise;

[0044] Step S6, Stress Relief Verification: Detect residual stress using an online X-ray diffractometer: Measurement point spacing: 1 test every 10m; Acceptance standard: Residual stress ≤15MPa.

[0045] In this embodiment, the wire feeding guidance and initial tension control in step S1 ensure the stability and consistency of the stranded wire when it enters the processing flow. The adjustment mechanism of the magnetic powder brake can precisely control the initial tension within the range of 5±0.5N, avoiding wire deformation or damage caused by tension fluctuations, and laying a solid foundation for subsequent processing. The gradient heating design in step S2 is the core of this method. By heating sequentially in three different temperature zones of 400℃, 480℃, and 520℃, combined with the dynamic calculation of the residence time in each temperature zone, the internal stress of the stranded wire is gradually released. The gradual heating method can not only effectively eliminate stress, but also avoid the degradation of material properties caused by sudden temperature changes, ensuring that the mechanical properties of the stranded wire are optimized. In the atmosphere control step in step S3, by continuously introducing nitrogen and strictly controlling the oxygen content, an inert gas protective environment is created, effectively preventing the oxidation of the stranded wire at high temperatures. The dynamic adjustment of the flow rate and the closed-loop adjustment mechanism of the oxygen content further improve the accuracy and reliability of the atmosphere control, ensuring the stability of the processing. Step S4, the cleaning process, employs pulsed airflow cleaning technology combined with a specific composition of cleaning airflow. This not only removes impurities from the surface of the stranded wire but also enhances its surface smoothness and oxidation resistance. Step S5, the winding and forming process, utilizes scientific linear speed adjustment, fully considering the impact of temperature rise on wire length, ensuring the uniformity and compactness of the winding process. Step S6, the stress relief verification, employs an online X-ray diffractometer for real-time detection, performing tests every 10 meters to ensure residual stress ≤15MPa, thus comprehensively verifying the stress removal effect. This embodiment effectively eliminates stress within the stranded wire, improves its overall performance and stability, and ensures that the stranded wire will not exhibit dispersion in practical applications, demonstrating significant technical advantages and practical value.

[0046] The above embodiments are implemented under the following conditions:

[0047] Copper alloy stranded wire, 7 strands, Φ0.25mm, stress relief

[0048] The process parameters execution record is shown in the table below:

[0049]

[0050] The diameter of the conveying pipeline is D=50mm, the temperature rise is ΔT=120℃, and the particle size of the nano-alumina particles is strictly controlled within 50±5nm.

[0051] Table 1: Comparison of stress relief effects (sampling of 10,000 meters of wire)

[0052]

[0053] Table 2: Online Control Performance Verification

[0054]

[0055] Table 3: Stability Test of Twisted Wire Structure

[0056]

[0057] Table 4: Comparison of problems before and after process optimization

[0058]

[0059] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An alloy strand stress relieving device characterized by: The device includes a pay-off assembly, a frame, a heating assembly, a nitrogen generating assembly, a delivery pipe, a conductor assembly, a cleaning assembly, and a take-up assembly. The pay-off assembly is located on one side of the frame and is used to pay the stranded wire toward the delivery pipe. A stress relief box is provided on the surface of the frame. The delivery pipe is located inside the stress relief box. The heating assembly is located inside the stress relief box and outside the delivery pipe to heat the delivery pipe. The nitrogen generating assembly is provided with an inflation pipe connected to the delivery pipe and is used to fill the delivery pipe with nitrogen to create an atmosphere inside the delivery pipe. The conductor assembly is used to guide the alloy stranded wire toward the cleaning assembly. The cleaning assembly cleans the alloy stranded wire. The take-up assembly is used to wind up the cleaned alloy stranded wire.

2. The alloy strand stress relieving device of claim 1, wherein: The wire feeding assembly includes a base frame, a wire feeding machine housing, a wire feeding roller, a wire feeding guide frame, and a wire feeding guide wheel. The wire feeding machine housing is mounted on the base frame, the wire feeding roller is mounted on one side of the wire feeding machine housing, the wire feeding guide frame is mounted on the upper side of the wire feeding machine housing, and the wire feeding guide wheel is mounted on the wire feeding guide frame. The wire feeding roller is used to feed wire toward the wire feeding guide wheel, and the wire feeding guide wheel is used to feed the wire toward the conveying pipeline.

3. The alloy strand stress relieving device of claim 1, wherein: The frame is equipped with a placement rack and a workbench. The placement rack is located below the workbench and is used to install the nitrogen generating assembly. The stress relief box is placed on the workbench.

4. The alloy strand stress relieving device of claim 1, wherein: The stress relief box includes a lower box and an upper box, the upper box is connected to the lower box, the conveying pipe is set on the lower box, and the top of the lower box is provided with an exhaust pipe; both ends of the conveying pipe are provided with ceramic rings, which are used for the introduction and exit of alloy stranded wire.

5. The alloy strand stress relieving device of claim 1, wherein: The heating assembly includes multiple heating elements arranged sequentially along the conveying direction of the conveying pipe. Each heating element is a heating coil, which is spirally wound around the outside of the conveying pipe. The heating temperature of the multiple heating elements increases sequentially.

6. The alloy strand stress relief device according to claim 1, characterized in that: The nitrogen generating assembly includes a control host and a gas storage tank. The control host is used to generate nitrogen and deliver it to the gas storage tank. The gas storage tank is used to store nitrogen. The filling pipe is used to connect the gas storage tank to the delivery pipe to keep the delivery pipe filled with nitrogen.

7. The alloy strand stress relief device according to claim 1, characterized in that: The wire assembly includes a wire frame, a wire guide frame, and a wire support. The wire frame is mounted on a frame, the wire guide frame is equipped with a guide rod, and the wire support is located at one end of the wire frame. The wire support has multiple wire arms, and each wire arm is equipped with a wire wheel. The wire wheel is used to guide the wire toward the take-up assembly.

8. The alloy strand stress relief device according to claim 7, characterized in that: The cleaning assembly includes a cleaning bracket and a cleaning sleeve. The cleaning bracket is mounted on the lead wire arm, and the cleaning sleeve is mounted on the cleaning bracket. The cleaning sleeve has a cleaning channel inside, and the outside of the cleaning sleeve has a cleaning air pipe interface for connecting to the air pipe to supply air for cleaning the wires in the cleaning channel.

9. The alloy strand stress relief device according to claim 1, characterized in that: The take-up assembly includes a take-up housing, a take-up guide roller, and a take-up roller. The take-up guide roller and the take-up roller are both disposed inside the take-up housing. The take-up guide roller is used to guide the wire toward the take-up roller for winding the alloy stranded wire.

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