High-performance stainless steel fine wire production and processing method and device
Through ultrasonic vibration and microalloy pretreatment, multi-field coupled rolling and intelligent heat treatment, the dimensional deviation and surface quality problems in stainless steel fine line production are solved, and the efficient production of high-performance stainless steel fine line is achieved, and product quality and production efficiency are improved.
Patent Information
- Application Number
- CN202510407190.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2025-08-01
AI Technical Summary
In the production process of traditional stainless steel fine wire, there are problems such as dimensional deviation, uneven tissue, uneven roll temperature, and degradation of fine wire surface quality, especially under high temperature and high stress conditions, which affect production efficiency and product quality.
Ultrasonic vibration and microalloyization technology are used to pretreat raw materials, combined with electromagnetic induction heating and water cooling of three-roll Y-type layout rolling mill, combined with segmented temperature control and online detection system, and through multi-field coupled rolling, intelligent heat treatment and real-time optimization of process parameters, the efficient production of precision lines is achieved.
It significantly improves the comprehensive performance of stainless steel fine wire, has a tensile strength of 1700-1900MPa, a surface quality Ra≤0.2μm, a yield rate of ≥95%, and reduces energy consumption.
Smart Images
Figure CN120394564A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of stainless steel fine wire production, and in particular relates to a high-performance stainless steel fine wire production and processing method and device. Background Art
[0002] In the production process of high-performance stainless steel wire, the traditional rolling process faces many challenges, especially in roll layout, temperature control and wire surface quality protection.
[0003] Although the traditional two-roll mill layout has a simple structure, its contact area is limited, resulting in uneven metal flow and prone to dimensional deviation and uneven structure problems. When processing materials with complex shapes or high performance requirements, this layout often requires multiple rolling and adjustments, which not only increases production costs but also prolongs the production cycle.
[0004] At the same time, the rollers are prone to temperature unevenness during high-temperature rolling, especially during long-term continuous production. Excessively high roller surface temperatures can cause deformation or damage, affecting rolling quality and roller life. Traditional cooling methods (such as air cooling or simple water cooling) have difficulty achieving precise control of roller surface temperature, resulting in large roller temperature fluctuations, which in turn affects the dimensional accuracy and surface quality of the finished wire.
[0005] Furthermore, during the rolling process, the surface of the finished wire is susceptible to damage such as oxidation, corrosion, and wear, especially under high temperature and high stress conditions. Traditional surface treatment methods, which rely solely on simple coatings or lubricants, fail to provide long-term, effective protection, resulting in a decline in the surface quality of the finished wire, affecting subsequent processing and performance. Summary of the Invention
[0006] The purpose of the present invention is to propose a high-performance stainless steel fine wire production and processing method and device in order to solve the problems of dimensional deviation and uneven structure in the traditional stainless steel fine wire production process, which affect the dimensional accuracy and surface quality of the fine wire.
[0007] In order to achieve the above object, the present invention adopts the following technical solution: a method for producing and processing high-performance stainless steel fine wire, comprising the following steps:
[0008] S1, raw material pretreatment;
[0009] Grain refinement: The stainless steel raw material is pretreated using ultrasonic vibration and microalloying technology, and rare earth elements Ce or La are added at a content of 0.05%-0.1%wt. Mechanical stirring is used to ensure uniform distribution of the elements;
[0010] Coating treatment: Before drawing, the stainless steel wire is immersed in a coating agent containing nano-alumina particles, and then the coating is cured by an induction heating device.
[0011] S2. Multi-field coupled rolling: Use a three-roll Y-type layout rolling mill. The middle roll is an electromagnetic induction heating roll, and the side rolls are integrated with water-cooling channels. Through segmented induction heating and water-cooling spraying, the surface temperature gradient of the rolled piece is adjusted in real time to ±20°C.
[0012] S3. Heat treatment: Combine thermal simulation and infrared temperature measurement to control the cooling rate. By adjusting the cooling path, precise control of the martensite / austenite dual-phase ratio is achieved; after annealing, vibration aging treatment is applied to release residual stress.
[0013] S4. Online monitoring: Integrate a laser diameter gauge, an eddy current flaw detector, and an industrial camera on the equipment. By detecting the diameter, defects, and appearance of the stainless steel fine wire, based on the detection data, the rolling speed and cooling water volume are dynamically adjusted through a neural network algorithm to achieve real-time optimization.
[0014] As a further description of the above technical solution:
[0015] In S1, the ultrasonic vibration frequency of the pretreatment is 20 kHz ± 0.5 kHz, and the power is 2 kW ± 0.2 kW.
[0016] As a further description of the above technical solution:
[0017] In S1, the soaking time is 30 - 60 s, the heating temperature of the heating device is 150 ± 10°C, and the heating time is 20 - 30 s.
[0018] As a further description of the above technical solution:
[0019] In S2, the power of the electromagnetic induction heating roll is 300 kW ± 30 kW; the water flow rate in the water-cooling channel is 5 m / s ± 0.5 m / s.
[0020] As a further description of the above technical solution:
[0021] In S3, the residual stress is reduced to ≤10 MPa.
[0022] As a further description of the above technical solution:
[0023] In S3, the frequency of the vibration aging treatment is 50 Hz, and the amplitude is 0.5 mm.
[0024] As a further description of the above technical solution: [
[0025] The present invention also provides a device for a production and processing method of high-performance stainless steel fine wire, including a multi-field coupling rolling mill, a heat treatment furnace, and an on-line detection and feedback area. An air-powered pinch feeding device is arranged between the multi-field coupling rolling mill and the heat treatment furnace. The outlet of the heat treatment furnace is connected with a water mist quenching section. After quenching, the stainless steel wire rod is dried by nitrogen purging and then enters the on-line detection and feedback area.
[0026] As a further description of the above technical solution:
[0027] The multi-field coupling rolling mill is a three-roll Y-type layout rolling mill, and the three-roll Y-type layout rolling mill includes a middle roll and several side rolls.
[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:
[0029] 1. In the present invention, the method realizes the production of high-performance stainless steel fine wire through a four-stage process chain. First, in the raw material pretreatment stage, ultrasonic vibration and rare earth microalloying are used to refine grains, and the surface performance is improved by combining with the curing of nano-aluminum oxide film. Subsequently, in multi-field coupling rolling, electromagnetic auxiliary technology is adopted to improve the fluidity of metal, and precise diameter reduction is achieved by cooperating with segmented temperature control. In the intelligent heat treatment stage, infrared temperature measurement and algorithm control are used to accurately regulate the duplex ratio and eliminate residual stress. Finally, the on-line detection system integrates laser, eddy current, and vision technologies, and combines neural network algorithms to realize the closed-loop optimization of process parameters. This method significantly improves the comprehensive performance of stainless steel fine wire, with a tensile strength of 1700-1900 MPa, a surface quality Ra≤0.2 μm, and a finished product rate≥95%. The energy consumption is reduced through electromagnetic auxiliary rolling.
[0030] 2. In the present invention, during the production and processing of high-performance stainless steel fine wire, through the three-roll Y-type layout, the electromagnetic induction heating function of the middle roll and the water cooling channels of the side rolls are used to realize the efficient rolling of the fine wire. The middle roll is heated by electromagnetic induction with a power of 300 kW, rapidly and uniformly increasing the surface temperature of the roll, ensuring the stability of the rolling process. At the same time, the water cooling channels of the side rolls cool the roll to prevent the roll from deforming or being damaged due to high temperature, and maintain the uniformity of the surface temperature of the roll. The synergistic effect of this heating and cooling, combined with the reasonable layout of the roll and the adjustable rolling speed (0-80 m / min) and electromagnetic field intensity (0-1 T), can effectively control the deformation and microstructure transformation of the fine wire during rolling, thereby improving the dimensional accuracy and mechanical properties of the fine wire. Description of the Drawings
[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0032] Figure 1 It is a step diagram of a production and processing method for high-performance stainless steel fine wire.
[0033] Figure 2 It is a schematic structural diagram of a three-roll Y-type layout rolling mill in a device for a production and processing method of high-performance stainless steel fine wire.
[0034] Legend description:
[0035] 1 - Three-roll Y-type layout rolling mill; 11 - Middle roll; 12 - Side roll. Detailed implementation manners
[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0039] It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0040] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0041] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0042] Please refer to Figure 1 , the present invention provides a technical solution: a method for producing and processing high-performance stainless steel fine wire, including the following steps:
[0043] S1. Raw material pretreatment;
[0044] Grain refinement: The stainless steel raw material is pretreated by ultrasonic vibration and microalloying technology, adding rare earth elements Ce or La with a content of 0.05%-0.1% wt, and ensuring the uniform distribution of elements through mechanical stirring; ultrasonic vibration can make the grains inside the raw material be affected by high-frequency vibration during melting, thereby breaking the original grain growth mode and promoting grain refinement. This refined grain structure can provide a better mechanical property basis for the fine wire in subsequent processing; and 0.05%-0.1% of rare earth elements are added to the raw material. Rare earth elements have unique chemical properties and can interact with the matrix metal during melting, further promoting grain refinement.
[0045] Film treatment: Before drawing, the stainless steel wire is immersed in a film agent containing nano-aluminum oxide particles, and then the coating is cured by an induction heating device. The nano-aluminum oxide particles have high hardness and good wear resistance, and can form a uniform and dense protective film on the surface of the fine wire.
[0046] S2. Multi-field coupled rolling: Use a three-roll Y-type layout rolling mill 1. The middle roll 11 is an electromagnetic induction heating roll, and the side rolls 12 are integrated with water-cooling channels. Through segmented induction heating and water-cooling spraying, the surface temperature gradient of the rolled piece is adjusted in real time to ±20°C. The role of the pulsed electromagnetic field is to regulate the metal flow during the rolling process through electromagnetic force. This electromagnetic force can make the deformation of the metal between the rolls more uniform, reduce the instability of the metal flow, thereby improving the dimensional accuracy and tissue uniformity of the fine wire. Moreover, with the setting of the three-roll Y-type layout rolling mill, this layout can make full use of the interaction between the rolls to improve the rolling efficiency and quality. Among them, the middle roll is an electromagnetic induction heating roll with a power of 300 kW, which can quickly heat the surface of the roll to make the surface temperature of the roll evenly distributed, thus ensuring the stability of the rolling process. The side rolls are integrated with water-cooling channels, and the rolls are cooled by water-cooling to ensure that the rolls can still maintain a good working state under high-temperature conditions and extend the service life of the rolls.
[0047] A segmented induction heating and water-cooling spraying system is also set up to adjust the temperature gradient of the rolled piece in real time. During the rolling process, according to the deformation situation and tissue transformation requirements of the fine wire, the fine wire is heated in segments by the induction heating device, and at the same time, the fine wire is cooled by the water-cooling spraying device. This combined heating and cooling method can accurately control the temperature of the fine wire at different positions, and control the temperature gradient within ±20°C.
[0048] S3. Heat treatment: Combining thermal simulation and infrared temperature measurement, controlling the cooling rate, and realizing precise regulation of the martensite / austenite dual-phase ratio by adjusting the cooling path; applying vibration aging treatment after annealing to release residual stress; through the combination of these two technologies, the cooling rate can be accurately controlled, and the precise regulation of the martensite / austenite dual-phase ratio can be achieved, with the error controlled within ±2%. After annealing, vibration aging treatment is added, with a frequency of 50 Hz and an amplitude of 0.5 mm. After the vibration aging treatment, the residual stress of the fine wire can be reduced to ≤10 MPa.
[0049] S4. Online monitoring: Integrate a laser diameter gauge, an eddy current flaw detector, and an industrial camera on the equipment. By detecting the diameter, defects, and appearance of the stainless steel fine wire, based on the detection data, the rolling speed and cooling water volume are dynamically adjusted through the neural network algorithm to achieve real-time optimization.
[0050] The ultrasonic vibration frequency of the pre-treatment in S1 is 20 kHz ± 0.5 kHz, and the power is 2 kW ± 0.2 kW.
[0051] The soaking time in S1 is 30 - 60 s, the heating temperature of the heating device is 150 ± 10°C, and the heating time is 20 - 30 s.
[0052] In S2, the power of the electromagnetic induction heating roll is 300 kW ± 30 kW; the water flow rate in the water cooling channel is 5 m / s ± 0.5 m / s.
[0053] In S3, the residual stress is reduced to ≤10 MPa.
[0054] The frequency of the vibration aging treatment in S3 is 50 Hz, and the amplitude is 0.5 mm.
[0055] Please refer to Figure 2 , the present invention also provides a device for a high-performance stainless steel fine wire production and processing method, including a multi-field coupling rolling mill, a heat treatment furnace, and an on-line detection and feedback area. An air-powered pinch feeding device is arranged between the multi-field coupling rolling mill and the heat treatment furnace. The outlet of the heat treatment furnace is connected with a water mist quenching section. After quenching, the stainless steel wire rod is dried by nitrogen purging and then enters the on-line detection and feedback area.
[0056] The multi-field coupling rolling mill is a three-roll Y-type layout rolling mill 1, and the three-roll Y-type layout rolling mill includes a middle roll 11 and several side rolls 12.
[0057] Working principle: This method realizes the production of high-performance stainless steel fine wire through a four-stage process chain. First, in the raw material pretreatment stage, ultrasonic vibration and rare earth microalloying are used to refine grains, and the surface performance is improved by combining with nano-aluminum oxide film curing. Subsequently, in multi-field coupling rolling, electromagnetic auxiliary technology is used to improve the fluidity of the metal, and precise diameter reduction is achieved by cooperating with segmented temperature control. In the intelligent heat treatment stage, infrared temperature measurement and algorithm control are used to accurately regulate the duplex ratio and eliminate residual stress. Finally, the on-line detection system integrates laser, eddy current, and vision technologies, and combines neural network algorithms to realize closed-loop optimization of process parameters. This method significantly improves the comprehensive performance of stainless steel fine wire.
[0058] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A production and processing method for high-performance stainless steel fine wire, characterized in that, It includes the following steps: S1. Raw material pretreatment; Grain refinement: The stainless steel raw material is pretreated by ultrasonic vibration and microalloying technology, adding rare earth elements Ce or La with a content of 0.05%-0.1% wt, and ensuring the uniform distribution of elements through mechanical stirring; Film treatment: Before drawing, the stainless steel wire is immersed in a film agent containing nano-aluminum oxide particles, and then the coating is cured by an induction heating device, S2. Multi-field coupling rolling; Using a three-roll Y-type layout rolling mill, the middle roll is an electromagnetic induction heating roll, and the side rolls are integrated with water-cooling channels. Through segmented induction heating and water-cooling spraying, the surface temperature gradient of the rolled piece is adjusted in real time to ±20°C; S3. Heat treatment: Combining thermal simulation and infrared temperature measurement, controlling the cooling rate, and realizing precise control of the martensite / austenite dual-phase ratio by adjusting the cooling path; After annealing, vibration aging treatment is applied to release residual stress; S4. Online monitoring, integrating a laser diameter gauge, an eddy current flaw detector and an industrial camera on the equipment. By detecting the diameter, defects and appearance of the stainless steel fine wire, based on the detection data, the rolling speed and the cooling water volume are dynamically adjusted through a neural network algorithm to achieve real-time optimization.
2. A method for producing and processing high-performance stainless steel fine wire according to claim 1, characterized in that, In S1, the ultrasonic vibration frequency of the pretreatment is 20 kHz ± 0.5 kHz, and the power is 2 kW ± 0.2 kW.
3. A method for producing and processing high-performance stainless steel fine wire according to claim 1, characterized in that, In S1, the soaking time is 30-60 s, the heating temperature of the heating device is 150 ± 10°C, and the heating time is 20-30 s.
4. A method for producing and processing high-performance stainless steel fine wire according to claim 1, characterized in that, In S2, the power of the electromagnetic induction heating roll is 300 kW ± 30 kW; the water flow rate in the water-cooling channel is 5 m / s ± 0.5 m / s.
5. A method for producing and processing high-performance stainless steel fine wire according to claim 1, characterized in that, In S3, the residual stress is reduced to ≤10 MPa.
6. A method for producing and processing high-performance stainless steel fine wire according to claim 1, characterized in that, The frequency of the vibration aging treatment in S3 is 50 Hz, and the amplitude is 0.5 mm.
7. An apparatus for a method of manufacturing a high-performance stainless steel fine wire according to claims 1-6, characterized in that, It includes a multi-field coupling rolling mill, a heat treatment furnace and an online detection and feedback area. An air-powered pinch feeding device is arranged between the multi-field coupling rolling mill and the heat treatment furnace. The outlet of the heat treatment furnace is connected with a water mist quenching section. After quenching, the stainless steel wire is dried by nitrogen purging and then enters the online detection and feedback area.
8. The device for the production and processing method of a high-performance stainless steel fine wire according to claim 7, characterized in that, The multi-field coupling rolling mill is a three-roll Y-type layout rolling mill, and the three-roll Y-type layout rolling mill includes a middle roll and several side rolls.