Manufacturing process of plastic deformation resistant spring
Through a process including cold roll molding, heat treatment, correction, solid solution treatment and final heat treatment, the problems of plastic deformation and dimensional accuracy reduction caused by internal stress in traditional spring manufacturing are solved, and a plastic deformation spring with high strength, toughness and precision is achieved.
Patent Information
- Application Number
- CN202411786607.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-03-04
AI Technical Summary
The traditional plastic-resistant deformation spring manufacturing process is prone to internal stress during processing, which leads to plastic deformation of the spring during use, and thermal expansion and contraction during heat treatment leads to a decrease in dimensional accuracy.
A manufacturing process of resistant plastic deformation springs is adopted, including cold roll forming, preliminary heat treatment, precision correction, deep solution treatment, rapid cooling and final heat treatment, through these steps, eliminate internal stress, improve material strength and toughness, and ensure spring dimensional accuracy.
It significantly improves the plastic deformation resistance of the spring, extends the service life, ensures the stable performance of the spring during use, and reduces the cost of the manufacturing process.
Smart Images
Figure CN119549622A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of spring manufacturing, and in particular to a manufacturing process of an anti-plastic deformation spring. Background Art
[0002] As a common elastic element, springs are widely used in machinery, automobiles, electronics and other fields. Traditional spring manufacturing processes mainly include cold coiling and hot coiling, and different processing methods are used to meet the performance requirements in different use environments.
[0003] However, with the development of modern industry, the performance requirements for springs are getting higher and higher, especially in terms of resistance to plastic deformation. Traditional processes can hardly meet the increasingly stringent requirements.
[0004] The existing anti-plastic deformation spring manufacturing process is prone to internal stress during the cold rolling and hot rolling processes. These internal stresses will cause the spring to undergo plastic deformation during use. In addition, the hot rolling and high-temperature solution treatment processes will easily lead to a decrease in the dimensional accuracy of the spring due to thermal expansion and contraction during the heat treatment process, thus affecting its performance.
[0005] Therefore, in view of the above problems, a manufacturing process of a spring resistant to plastic deformation is proposed. Summary of the invention
[0006] The purpose of the present invention is to solve the shortcomings of the prior art and provide a manufacturing process for a spring that resists plastic deformation.
[0007] In order to achieve the above object, the present invention adopts the following technical solution: a manufacturing process of an anti-plastic deformation spring, comprising the following steps: S1. Cold coiling: the alloy steel wire is coiled into a spring shape through a cold coiling machine at room temperature to form a preliminary spring blank; S2, preliminary heat treatment, the spring blank after cold rolling is subjected to preliminary annealing treatment to eliminate the internal stress generated during the cold working process; S3, precision calibration, the spring blank that has undergone preliminary heat treatment is precisely calibrated to ensure that the dimensional accuracy of the spring meets the design requirements; S4, deep solution treatment, the spring blank after precision correction is subjected to deep solution treatment to fully dissolve the alloy elements and improve the strength and toughness of the material; S5, rapid cooling, quickly cooling the spring blank after deep solution treatment to room temperature to lock the microstructure of the material; S6, final heat treatment, the spring blank after rapid cooling is subjected to final tempering treatment to adjust the hardness and toughness of the material; S7. Surface treatment: Surface treatment is performed on the spring after the final heat treatment to improve the corrosion resistance and service life of the spring.
[0008] As a preferred implementation, in step S1, the specific steps are: preparing the alloy steel wire, ensuring that its diameter and material meet the design requirements; In the step S1, the specific steps are: before cold rolling, the alloy steel wire is subjected to prestressing treatment, such as stretching or compression, to optimize the plasticity and elasticity of the material; In the step S1, the specific steps are: feeding the alloy steel wire into a cold coiling machine, and adjusting the machine parameters to wind the steel wire into a desired spring shape at room temperature; In the step S1, the specific steps are: monitoring the forming process to ensure the consistency and accuracy of the spring shape; In the step S1, the specific steps are: after the forming is completed, the spring blank is taken off the cold rolling machine to prepare for the next step of processing.
[0009] As a preferred implementation, in step S2, the specific steps are: placing the spring blank after cold rolling into a heat treatment furnace.
[0010] In step S2, the specific steps are: setting an appropriate annealing temperature and time to eliminate the internal stress generated during the cold working process; In step S2, the specific steps are: monitoring the heat treatment process to ensure the accuracy of temperature and time; In step S2, the specific steps are: after the heat treatment is completed, the spring blank is taken out and allowed to cool naturally to room temperature; In the step S2, the specific steps are: after the preliminary heat treatment, the spring blank is treated with ultrasonic vibration equipment, and appropriate vibration frequency and time are set to further eliminate internal stress.
[0011] As a preferred implementation, in step S3, the specific steps are: using precision correction equipment, such as a correction machine or a press, to correct the size of the spring blank; In step S3, the specific steps are: adjusting equipment parameters to ensure that the dimensional accuracy of the spring meets the design requirements; In step S3, the specific steps are: during the calibration process, multiple adjustments and checks may be required to ensure accuracy.
[0012] As a preferred embodiment, in step S4, the specific steps are: placing the precisely calibrated spring blank into a solution treatment furnace; In step S4, the specific steps are: setting the temperature and time of the solution treatment to ensure that the alloy elements are fully dissolved; In step S4, the specific steps are: monitoring the solution treatment process to ensure the accuracy of temperature and time; In the step S4, the specific steps are: after the solution treatment is completed, the spring blank is taken out and prepared for the next step of treatment.
[0013] As a preferred embodiment, in step S5, the specific steps are: rapidly cooling the spring blank after deep solution treatment to room temperature, and water cooling, oil cooling or other rapid cooling methods may be used; In the step S5, the specific steps are: after rapid cooling, placing the spring blank in a magnetic field for annealing.
[0014] As a preferred embodiment, in step S6, the specific steps are: placing the rapidly cooled spring blank into a tempering furnace; In step S6, the specific steps are: setting the tempering temperature and time to adjust the hardness and toughness of the material; In step S6, the specific steps are: monitoring the tempering process to ensure the accuracy of temperature and time; In step S6, the specific steps are: after the tempering is completed, the spring is taken out and allowed to cool naturally to room temperature.
[0015] As a preferred implementation, in step S7, the specific steps are: selecting a suitable surface treatment method, such as electroplating, spraying, or carburizing, according to the use environment and requirements of the spring; In step S7, the specific steps are: applying surface treatment technology to ensure that a uniform and dense protective layer is formed on the surface of the spring; In step S7, the specific steps are: after completing the surface treatment, perform a quality inspection to ensure that the adhesion, uniformity and thickness of the coating meet the requirements.
[0016] Compared with the prior art, the advantages and positive effects of the present invention are: Deep solution treatment fully dissolves the alloy elements through high-temperature heating to form a uniform solid solution, followed by rapid cooling to quickly lock the material's microstructure and prevent grain growth. This process enhances the stability and strength of the material. This treatment method enables the spring to distribute stress more evenly when subjected to external force, reduces local stress concentration, and significantly improves the strength and toughness of the material. The spring's resistance to plastic deformation is significantly improved, extending its service life, and effectively solving the problem of plastic deformation of the spring under long-term use or high load, resulting in performance degradation.
[0017] By using high-precision equipment to correct the size of the spring blank, ensure that its dimensional accuracy meets the design requirements, and finally heat treatment by precisely controlling the tempering temperature and time, adjust the hardness and toughness of the material while maintaining dimensional stability; with this design, the spring blank is carefully adjusted in size to ensure that it meets the design accuracy. The tempering treatment can not only eliminate the residual stress inside the material, but also optimize the microstructure of the material, so that the dimensional error of the spring is controlled within ±0.05mm, meeting the needs of high-precision applications. The spring can maintain stable performance during use and is not easy to deform.
[0018] The initial heat treatment eliminates the internal stress generated during the cold working process and reduces energy consumption by setting appropriate annealing temperature and time. The surface treatment selects appropriate treatment methods, such as electroplating, spraying or carburizing, to ensure the performance of the spring. These surface treatment technologies can provide a uniform protective layer and extend the service life of the spring, so that the spring manufacturing process can maintain high performance while reducing the cost of the entire manufacturing process, making the spring manufacturing process more suitable for large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 An overall flow chart of a manufacturing process of an anti-plastic deformation spring provided by the present invention; Figure 2 A schematic diagram of a specific process of manufacturing a spring that resists plastic deformation provided by the present invention. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] like Figure 1 As shown, this embodiment provides a technical solution: a manufacturing process of an anti-plastic deformation spring, comprising the following steps: S1, cold coiling, winding the alloy steel wire into a spring shape through a cold coiling machine at room temperature to form a preliminary spring blank; in the step S1, the specific steps are, preparing the alloy steel wire to ensure that its diameter and material meet the design requirements; in the step S1, the specific steps are, before cold coiling, prestressing the alloy steel wire, such as stretching or compression, to optimize the plasticity and elasticity of the material; in the step S1, the specific steps are, feeding the alloy steel wire into the cold coiling machine, and adjusting the machine parameters to make the steel wire wound into the required spring shape at room temperature; in the step S1, the specific steps are, monitoring the forming process to ensure the consistency and accuracy of the spring shape; in the step S1, the specific steps are, after the forming is completed, removing the spring blank from the cold coiling machine to prepare for the next step of processing; Prepare the alloy steel wire, measure the diameter of the alloy steel wire to ensure it is within the specified tolerance range, cut the alloy steel wire to the required length, and prepare for subsequent cold coil forming; Select appropriate prestressing equipment, such as a tensile machine or a press, to apply the required prestress, fix the alloy steel wire on the fixture of the prestressing equipment, ensure that it is firmly fixed and does not damage the steel wire, start the prestressing equipment, stretch or compress the alloy steel wire, and record the specific parameters of the prestressing treatment; Feed the prestressed alloy steel wire into the cold coiling machine, adjust the coiling parameters of the cold coiling machine according to the design parameters of the spring, including the coiling speed, number of coiling turns, coiling diameter, etc., start the cold coiling machine, and wind the alloy steel wire into a spring shape at room temperature to ensure the stability and accuracy of the cold coiling machine and avoid spring shape deviation caused by machine vibration or movement; Use measuring tools, such as calipers or laser scanners, to regularly check the key dimensions of the spring, such as diameter, pitch and total length, record any abnormalities during the forming process, such as wire breakage, uneven winding, etc., and adjust the cold coiling machine parameters in a timely manner; After the spring shape is completed, the cold coiler is stopped and the spring blank is placed in the designated storage area, ready for the next heat treatment process. The spring blank is marked and its production batch, material type and key dimensions are recorded for subsequent traceability and quality control; S2, preliminary heat treatment, preliminary annealing treatment of the spring blank after cold rolling to eliminate the internal stress generated during the cold working process; in the step S2, the specific steps are, placing the spring blank after cold rolling into a heat treatment furnace. In the step S2, the specific steps are, setting appropriate annealing temperature and time to eliminate the internal stress generated during the cold working process; in the step S2, the specific steps are, monitoring the heat treatment process to ensure the accuracy of temperature and time; in the step S2, the specific steps are, after the heat treatment is completed, take out the spring blank and let it cool naturally to room temperature; in the step S2, the specific steps are, after the preliminary heat treatment, use ultrasonic vibration equipment to treat the spring blank, set appropriate vibration frequency and time to further eliminate internal stress; Preheat the heat treatment furnace to an appropriate temperature, which should be lower than the critical temperature of the material to facilitate annealing; The spring blanks after cold rolling are loaded into the tray or basket of the heat treatment furnace, ensuring that there is enough space between them to ensure uniform heat treatment. The internal stress generated during the cold rolling process is eliminated through the preliminary heat treatment, which helps to improve the plasticity and elasticity of the material to cooperate with the subsequent precise positioning; Confirm the placement of the spring blanks to avoid contact or accumulation, so as not to affect the heat treatment effect; Set the annealing temperature and time according to the characteristics of the spring material and the required annealing effect; Start the heat treatment furnace, heat the spring blank to the set annealing temperature, and maintain it for the set time, monitor the temperature in the furnace to ensure that the temperature is uniform and stable, and adjust it if necessary; Use thermocouples or other temperature measuring equipment to monitor the temperature in the furnace in real time to ensure that it is consistent with the set parameters, and record the temperature changes during the heat treatment process for subsequent analysis and quality traceability; After reaching the set holding time, stop heating and let the spring blank cool naturally in the furnace to near room temperature; Make sure the spring blank has cooled completely to avoid burns or equipment damage due to overheating when taking it out; Remove the spring blanks from the heat treatment furnace and transfer them to a cooling area, avoiding contact with moisture or other substances that may cause rapid cooling; Fix the spring blank after preliminary heat treatment on the fixture of the ultrasonic vibration equipment, set the frequency and time of ultrasonic vibration according to the characteristics of the spring material and the requirements for eliminating internal stress, start the ultrasonic vibration equipment, treat the spring blank to further eliminate internal stress, and after the treatment is completed, turn off the ultrasonic vibration equipment, remove the spring blank from the equipment, and prepare for the next process; Preliminary heat treatment can also improve the structure of the material, making the dissolution of alloy elements more uniform during deep solution treatment, thereby improving the strength and toughness of the final product; S3, precision calibration, precision calibration of the spring blank after preliminary heat treatment to ensure that the dimensional accuracy of the spring meets the design requirements; in the step S3, the specific steps are, use precision calibration equipment, such as a calibration machine or a press, to calibrate the size of the spring blank; in the step S3, the specific steps are, adjust the equipment parameters to ensure that the dimensional accuracy of the spring meets the design requirements; in the step S3, the specific steps are, during the calibration process, multiple adjustments and inspections may be required to ensure accuracy; After the initial heat treatment, the internal stress of the material is reduced, which makes the precision calibration process smoother and reduces the deformation or damage that may occur during the calibration process. Precision calibration ensures the dimensional accuracy of the spring and avoids unevenness in subsequent deep solution treatment caused by size. Place the spring blank that has undergone preliminary heat treatment in the correction area of the correction equipment, ensuring that the spring blank is properly fixed to avoid displacement or rotation under pressure; Input or adjust the corresponding parameters on the correction equipment, including pressure, clamping force, correction angle, etc., start the correction equipment, perform preliminary correction on the spring blank to achieve the predetermined dimensional parameters, observe the changes of the spring blank during the correction process, and ensure that no unexpected deformation or damage occurs; During the calibration process, use precision measuring tools such as calipers, micrometers or coordinate measuring machines to measure the key dimensions of the spring blank, compare the measurement results with the design requirements, and evaluate the calibration effect; If the measurement results show that the size of the spring blank does not meet the design requirements, adjust the parameters of the correction equipment according to the deviation and repeat the correction process until the dimensional accuracy of the spring blank meets the design requirements. For complex spring shapes or high-precision requirements, multiple corrections and inspections are required; After each correction, re-measurement and evaluation are required to ensure that the dimensional accuracy gradually approaches the design requirements; Record the parameters and measurement results of each calibration, including calibration pressure, measurement size, date and operator information; Once the dimensional accuracy of the spring blank reaches the design requirements, the correction process is stopped, and the corrected spring blank is removed from the equipment to prepare for subsequent heat treatment or surface treatment processes; Precise dimensional correction ensures uniform heating of the spring blank during deep solution treatment, thereby ensuring uniform distribution of alloy elements throughout the spring, further improving the strength and toughness of the material, and providing a basis for rapid cooling and final heat treatment; S4, deep solution treatment, deep solution treatment is performed on the precisely calibrated spring blank to fully dissolve the alloy elements and improve the strength and toughness of the material. In the step S4, the specific steps are: putting the precisely calibrated spring blank into a solution treatment furnace; in the step S4, the specific steps are: setting the temperature and time of the solution treatment to ensure that the alloy elements are fully dissolved; in the step S4, the specific steps are: monitoring the solution treatment process to ensure the accuracy of the temperature and time; in the step S4, the specific steps are: after the solution treatment is completed, taking out the spring blank and preparing for the next step of processing; Preheat the solution treatment furnace to an appropriate temperature, which is usually higher than the solution temperature of the material to facilitate solution treatment; Place the precisely calibrated spring blanks into the tray or basket of the solution treatment furnace, making sure there is enough space between them to ensure uniform heat treatment, and confirm the placement of the spring blanks to avoid contact or accumulation with each other, so as not to affect the heat treatment effect; Set the temperature and time of solution treatment according to the characteristics of the spring material and the required solution effect; Start the solution treatment furnace, heat the spring blank to the set solution temperature, and maintain it for the set time. Monitor the temperature in the furnace to ensure that the temperature is uniform and stable, and adjust it if necessary; Use thermocouples to monitor the temperature in the furnace in real time to ensure that it is consistent with the set parameters and record the temperature changes during the heat treatment process for subsequent analysis and quality traceability; After the set holding time is reached, select the appropriate cooling method, such as air cooling, water cooling or oil cooling, according to the characteristics and processing requirements of the material, and monitor the cooling process to ensure that the cooling speed meets the requirements of the material to avoid unnecessary thermal stress; After the solution treatment is completed, the spring blank is removed from the solution treatment furnace and transferred to the cooling area, ensuring that the spring blank is not damaged during the removal process and avoids contact with moisture or other substances that may cause rapid cooling; Place the spring blank after solution treatment in the designated storage area and allow it to cool naturally to room temperature. If rapid cooling is required, follow the set cooling method to prepare for the next heat treatment or machining process; Rapid cooling after deep solution treatment locks the material's microstructure, prevents grain growth, and maintains the material's high strength and good toughness; S5, rapid cooling, rapidly cooling the spring blank after deep solution treatment to room temperature to lock the microstructure of the material. In step S5, the specific steps are: rapidly cooling the spring blank after deep solution treatment to room temperature, and water cooling, oil cooling or other rapid cooling methods can be used; in step S5, the specific steps are: after rapid cooling, placing the spring blank in a magnetic field for annealing treatment; According to the characteristics of the spring material and the required cooling effect, select the appropriate cooling medium, such as water, oil or other special coolant, take the spring blank after deep solution treatment out of the furnace and quickly transfer it to the cooling equipment; For water or oil cooling, the spring blank is completely immersed in the cooling medium to achieve rapid heat exchange and temperature drop; Use temperature measuring equipment, such as thermocouples, to monitor the cooling rate and temperature of the spring blank in real time. According to the monitoring results, adjust the flow rate or temperature of the cooling medium to control the cooling rate within an appropriate range. Once the spring blank reaches room temperature or close to room temperature, remove it from the cooling medium and inspect the surface and shape of the spring blank to ensure that there is no deformation or cracks caused by rapid cooling; The rapidly cooled spring blank is placed in a magnetic field annealing device to ensure that it is properly fixed; rapid cooling also helps to form fine martensite or other strengthening phases, so that the final heat treatment will be adjusted to obtain the best balance of hardness and toughness; Start the magnetic field annealing equipment, perform magnetic field annealing on the spring blank, monitor the temperature and magnetic field strength during the magnetic field annealing process to ensure that they are consistent with the set parameters, and after reaching the set magnetic field annealing time, turn off the magnetic field annealing equipment, take the spring blank out of the magnetic field annealing equipment, and prepare for subsequent processes; S6, final heat treatment, the spring blank after rapid cooling is subjected to final tempering treatment to adjust the hardness and toughness of the material. In the step S6, the specific steps are: putting the spring blank after rapid cooling into a tempering furnace; in the step S6, the specific steps are: setting the tempering temperature and time to adjust the hardness and toughness of the material; in the step S6, the specific steps are: monitoring the tempering process to ensure the accuracy of the temperature and time; in the step S6, the specific steps are: after the tempering is completed, taking out the spring and letting it cool naturally to room temperature; Place the rapidly cooled spring blanks into the tray or basket of the tempering furnace, making sure there is enough space between them to ensure uniform heat treatment, and confirm the placement of the spring blanks to avoid contact or accumulation with each other, so as not to affect the heat treatment effect; According to the characteristics of the spring material and the required hardness and toughness, set the tempering temperature and time, start the tempering furnace, heat the spring blank to the set tempering temperature, and maintain it for the set time, monitor the temperature in the furnace to ensure that the temperature is uniform and stable, and make adjustments if necessary; Use thermocouples or other temperature measuring equipment to monitor the temperature in the furnace in real time to ensure that it is consistent with the set parameters, and record the temperature changes during the heat treatment process for subsequent analysis and quality traceability; After the set holding time is reached, stop heating and let the spring blank cool naturally in the furnace to near room temperature. Make sure that the spring blank has cooled completely to avoid burns or equipment damage due to over-high temperature when taking it out. Remove the spring blanks from the tempering furnace and transfer them to the cooling area, making sure that the spring blanks are not damaged during the removal process and avoid contact with moisture or other substances that may cause rapid cooling; Place the spring blank after tempering in a designated storage area and allow it to cool naturally to room temperature. Avoid forced cooling to prevent internal stress caused by excessive temperature difference. The spring blank after rapid cooling can be finely adjusted in hardness and toughness during the final heat treatment. Once the spring blank is completely cooled to room temperature, prepare for subsequent quality inspections, such as hardness testing and metallographic analysis, and record detailed information on the tempering treatment, including tempering temperature, holding time, cooling method, etc., to facilitate subsequent quality tracking and process improvement; S7, surface treatment, surface treatment is performed on the spring after the final heat treatment to improve the corrosion resistance and service life of the spring. In the step S7, the specific steps are: according to the use environment and requirements of the spring, select a suitable surface treatment method, such as electroplating, spraying, carburizing; in the step S7, the specific steps are: apply surface treatment technology to ensure that a uniform and dense protective layer is formed on the surface of the spring; in the step S7, the specific steps are: after completing the surface treatment, perform a quality inspection to ensure that the adhesion, uniformity and thickness of the coating meet the requirements; Analyze the working environment of the spring, including contact media, temperature, humidity and other factors, to determine the most suitable surface treatment method, and select the appropriate surface treatment technology according to the performance requirements of the spring, such as corrosion resistance, wear resistance, high temperature resistance, etc.; Clean the spring surface to remove oil, rust, oxide scale, etc. to improve the surface treatment effect. Use sandblasting, grinding or chemical cleaning to roughen the spring surface to increase the adhesion of the coating; For electroplating treatment, the spring is suspended in an electroplating tank, and parameters such as current density, pH value, and temperature are set for electroplating; For spraying treatment, the spring is fixed in the spraying equipment, and spraying parameters such as spraying speed, spraying distance, spraying material, etc. are set to spray; For carburizing treatment, the spring is placed in a carburizing furnace and the temperature, time, atmosphere and other parameters are set to perform carburizing; Use online monitoring equipment, such as ammeters and thermometers, to monitor the surface treatment process in real time, ensure that the parameters meet the process requirements, and record the key parameters in the surface treatment process to facilitate subsequent quality traceability and process optimization; After reaching the set processing time or conditions, turn off the surface treatment equipment, take out the spring, and for electroplating or spraying, perform post-processing such as cleaning, drying, curing, etc. to ensure the quality of the coating; Use coating thickness gauge, adhesion tester and other equipment to test the thickness, adhesion and other performance of the coating on the spring surface, and conduct appearance inspection on the spring surface to ensure that the coating is uniform and free of defects such as bubbles, cracks, and shedding; If the quality inspection finds problems with the coating, such as insufficient thickness, substandard adhesion, etc., repair or rework should be carried out, and the reasons for rework and treatment measures should be recorded to facilitate subsequent quality control and process improvement; Re-inspect the repaired spring to ensure that all performance indicators meet the requirements. After completing all surface treatments and quality inspections, record the final quality inspection report, including coating performance, appearance quality, etc.
[0022] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A manufacturing process for a spring that resists plastic deformation, characterized in that: The following steps are involved: S1. Cold coiling: the alloy steel wire is coiled into a spring shape through a cold coiling machine at room temperature to form a preliminary spring blank; S2, preliminary heat treatment, the spring blank after cold rolling is subjected to preliminary annealing treatment to eliminate the internal stress generated during the cold working process; S3, precision calibration, the spring blank that has undergone preliminary heat treatment is precisely calibrated to ensure that the dimensional accuracy of the spring meets the design requirements; S4, deep solution treatment, the spring blank after precision correction is subjected to deep solution treatment to fully dissolve the alloy elements and improve the strength and toughness of the material; S5, rapid cooling, quickly cooling the spring blank after deep solution treatment to room temperature to lock the microstructure of the material; S6, final heat treatment, the spring blank after rapid cooling is subjected to final tempering treatment to adjust the hardness and toughness of the material; S7. Surface treatment: Surface treatment is performed on the spring after the final heat treatment to improve the corrosion resistance and service life of the spring.
2. The manufacturing process of the anti-plastic deformation spring according to claim 1, characterized in that: In the step S1, the specific steps are: preparing the alloy steel wire to ensure that its diameter and material meet the design requirements; In the step S1, the specific steps are: before cold rolling, the alloy steel wire is subjected to prestressing treatment, such as stretching or compression, to optimize the plasticity and elasticity of the material; In the step S1, the specific steps are: feeding the alloy steel wire into a cold coiling machine, and adjusting the machine parameters to wind the steel wire into a desired spring shape at room temperature; In the step S1, the specific steps are: monitoring the forming process to ensure the consistency and accuracy of the spring shape; In the step S1, the specific steps are: after the forming is completed, the spring blank is taken off the cold rolling machine to prepare for the next step of processing.
3. The manufacturing process of the anti-plastic deformation spring according to claim 1, characterized in that: In the step S2, the specific steps are: placing the spring blank after cold rolling into a heat treatment furnace; In step S2, the specific steps are: setting an appropriate annealing temperature and time to eliminate the internal stress generated during the cold working process; In step S2, the specific steps are: monitoring the heat treatment process to ensure the accuracy of temperature and time; In step S2, the specific steps are: after the heat treatment is completed, the spring blank is taken out and allowed to cool naturally to room temperature; In the step S2, the specific steps are: after the preliminary heat treatment, the spring blank is treated with ultrasonic vibration equipment, and appropriate vibration frequency and time are set to further eliminate internal stress.
4. The manufacturing process of the anti-plastic deformation spring according to claim 1, characterized in that: In the step S3, the specific steps are: using precision correction equipment, such as a correction machine or a press, to correct the size of the spring blank; In step S3, the specific steps are: adjusting equipment parameters to ensure that the dimensional accuracy of the spring meets the design requirements; In step S3, the specific steps are: during the calibration process, multiple adjustments and checks are required to ensure accuracy.
5. The manufacturing process of the anti-plastic deformation spring according to claim 1, characterized in that: In the step S4, the specific steps are: placing the precisely calibrated spring blank into a solution treatment furnace; In step S4, the specific steps are: setting the temperature and time of the solution treatment to ensure that the alloy elements are fully dissolved; In step S4, the specific steps are: monitoring the solution treatment process to ensure the accuracy of temperature and time; In the step S4, the specific steps are: after the solution treatment is completed, the spring blank is taken out and prepared for the next step of treatment.
6. The manufacturing process of the anti-plastic deformation spring according to claim 1, characterized in that: In the step S5, the specific steps are: rapidly cooling the spring blank after deep solution treatment to room temperature, and water cooling, oil cooling or other rapid cooling methods may be used; In the step S5, the specific steps are: after rapid cooling, placing the spring blank in a magnetic field for annealing.
7. The manufacturing process of the anti-plastic deformation spring according to claim 1, characterized in that: In the step S6, the specific steps are: placing the rapidly cooled spring blank into a tempering furnace; In step S6, the specific steps are: setting the tempering temperature and time to adjust the hardness and toughness of the material; In step S6, the specific steps are: monitoring the tempering process to ensure the accuracy of temperature and time; In step S6, the specific steps are: after the tempering is completed, the spring is taken out and allowed to cool naturally to room temperature.
8. The manufacturing process of the anti-plastic deformation spring according to claim 1, characterized in that: In step S7, the specific steps are: according to the use environment and requirements of the spring, select a suitable surface treatment method, such as electroplating, spraying, carburizing; In step S7, the specific steps are: applying surface treatment technology to ensure that a uniform and dense protective layer is formed on the surface of the spring; In step S7, the specific steps are: after completing the surface treatment, perform a quality inspection to ensure that the adhesion, uniformity and thickness of the coating meet the requirements.