Continuous pulse tension heat treatment device for amorphous and nanocrystalline alloy materials

Abstract

The invention provides a continuous pulse tension heat treatment device for amorphous and nanocrystalline alloy materials, relates to the technical field of heat treatment devices, and aims to solve the technical problems that in the prior art, a heat treatment device for the amorphous and nanocrystalline alloy materials is single in continuous annealing function, not continuous in tensile stress circulation and low in tension control precision. The invention discloses a continuous pulse tension heat treatment device for amorphous and nanocrystalline alloy materials. A hysteresis brake roller group, a tension sensor, a vibration pulse controller, a tube furnace heating unit and a stepping motor roller group are sequentially arranged on a rack from front to back; two fixed idle wheels of the vibration pulse controller are arranged at the same height in the front-back direction, a driving piece is connected with a first base and drives the first base to move in the up-down direction, and a movable pulley is rotationally connected to the first base and located between the two fixed idle wheels. The hysteresis brake roller set, the tension sensor, the vibration pulse controller and the stepping motor roller set are all electrically connected with the main control equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat treatment devices, in particular to a continuous pulse tension heat treatment device for amorphous and nanocrystalline alloy materials. BACKGROUND

[0002] Amorphous alloy is an amorphous structure with disordered atomic arrangement, which is prepared by rapid cooling of melt; nanocrystalline alloy is a nanoscale grain precipitated on the amorphous matrix, which can be directly prepared by rapid cooling or obtained by crystallization treatment of amorphous alloy. Continuous materials such as amorphous and nanocrystalline alloy strips and wires are collectively referred to as amorphous and nanocrystalline alloy materials. Amorphous and nanocrystalline alloy materials are the core soft magnetic materials of key electronic devices such as high-frequency inductors, new energy vehicle driving modules, and smart grid transformers, and their magnetic and mechanical properties directly determine the working efficiency, stability, and service life of the devices.

[0003] With the upgrading of electronic information technology to high frequency and miniaturization, and the improvement of device reliability requirements and ease of processing in the new energy industry, amorphous and nanocrystalline alloy materials with excellent soft magnetic properties and good processing toughness have become the core demand of the industry. When iron-based amorphous materials are prepared by single-roll melt spinning process, a large amount of internal tensile stress will be introduced during rapid cooling, which needs to be optimized by specific annealing and tensile stress control process. Tensile annealing can guide the internal random distribution of magnetic domains to align along the force direction by applying directional and stable tension to the material. This ordered arrangement not only significantly improves the DC bias performance of the material, enabling the material to maintain good magnetic permeability under external bias magnetic field, but also effectively reduces magnetic hysteresis loss, reduces energy loss during magnetic field change, optimizes the frequency stability of magnetic permeability, and ensures that the material maintains stable magnetic properties in a wide frequency range. Dynamic tensile stress cycling forms a gradient tensile stress field in the material by periodic tension fluctuations, which promotes the uniform release of residual tensile stress along the thickness direction generated during rapid cooling. This tensile stress release not only further refines the magnetic domain structure to enhance the stability of magnetic properties and optimize the soft magnetic properties, but also reduces the microcracks and defects in the material, improves the uniformity of the microstructure, and thus enhances the toughness of the material, avoiding brittle fracture problems during subsequent processing such as cutting and winding. Especially in the process of punching the strip, the superior toughness can alleviate the impact of the punching force on the die, reduce die wear and damage, and prolong the service life of the die.

[0004] At present, the heat treatment and tensile stress cycle regulation of amorphous and nanocrystalline alloy materials mainly rely on two independent processes: one is continuous tension heat treatment process, which realizes batch processing through continuous conveying and constant tension application. This process can meet the demand of industrial production capacity relying on mature conveying architecture, but it can only provide a single constant tension effect and cannot realize dynamic tensile stress cycle. The other is static tensile stress cycle process, which applies periodic tensile stress to fixed static materials to optimize the structure and improve the uniformity of material toughness and magnetic performance. However, this process needs to be carried out offline and cannot be coordinated with the continuous annealing process, resulting in complicated production procedures, low connection efficiency and difficulty in ensuring the consistency of performance between batches. At the same time, the tension control of existing continuous tension annealing device mostly uses mechanical friction or pneumatic structure, which has limited control precision and is easy to cause tension fluctuation, leading to disorder of magnetic domain arrangement. The opening design of tubular furnace is easy to cause heat loss and form uneven temperature field, further affecting the stability of material performance.

[0005] To solve the above problems, the existing technical solutions mainly fall into two categories: one focuses on the optimization of continuous annealing device, such as improvement in tension control or anti-offset; the other is static tensile stress cycle technology, such as batch cycle processing of static materials by fixed roller structure in vacuum cavity. The former cannot realize dynamic stress cycle, and the latter has low production efficiency due to the inability to adapt to continuous conveying process, forming a bottleneck of production capacity. In addition, some continuous annealing devices also have problems such as low tension control precision and poor temperature field uniformity. The discretization of this process and the singleness of equipment function seriously restrict the efficiency and stability of the comprehensive performance of batch production of amorphous and nanocrystalline alloy materials, which is difficult to meet the large-scale demand of precision electronic devices. SUMMARY

[0006] In view of the shortcomings of the prior art, the purpose of the present application is to provide a continuous pulse tension heat treatment device for amorphous and nanocrystalline alloy materials to solve the technical problems of single continuous annealing function, non-continuous tensile stress cycle and low tension control precision of the heat treatment device for amorphous and nanocrystalline alloy materials in the prior art.

[0007] To solve the above technical problems, the present application provides a continuous pulse tension heat treatment device for amorphous and nanocrystalline alloy materials, which comprises a rack and a main control device. The rack is provided with a magnetic hysteresis brake roller group, a tension sensor, a vibration pulse controller, a tubular furnace heating unit and a stepping motor roller group from front to back in sequence. The vibration pulse controller comprises a first base, a driving part, a movable pulley and two fixed idlers. The two fixed idlers are arranged in the same height along the front and back directions. The driving part is connected and drives the first base to move in the up and down direction. The movable pulley is rotationally connected to the first base and located between the two fixed idlers. The first through hole is arranged at the front and rear ends of the tubular furnace heating unit for the amorphous and nanocrystalline alloy material to pass through. The hysteresis brake roller group, the tension sensor, the vibration pulse controller and the stepping motor roller group are electrically connected with the main control device.

[0008] After the above structure is adopted, the continuous pulse tension heat treatment device for amorphous and nanocrystalline alloy material has the following advantages: when the device only needs to perform continuous tension annealing, the driving member is not actuated, and the movable pulley remains stationary, so that the device is completely dependent on the cooperation of the hysteresis brake roller group and the stepping motor roller group of the continuous annealing equipment to accurately complete the continuous annealing operation under constant tension and ensure the stability of the traditional process; when the tension cycle of the conveyed material is needed, the vibration pulse controller can be started, the movable pulley is driven by the driving member to make periodic reciprocating motion, and the continuous conveyed material is subjected to pulse dynamic tension fluctuation to complete the tension cycle processing, thereby breaking the bottleneck of the traditional tension cycle relying on static batch processing, synchronizing the pulse tension cycle with the continuous conveying and continuous annealing of the material, significantly improving the processing efficiency, perfectly matching the batch production capacity of the continuous annealing equipment, and meeting the large-scale industrialization demand; the two processes can share the conveying, temperature control and tension control system of the continuous annealing equipment, without additional purchase of special tension cycle equipment as in the traditional mode, thereby greatly reducing the initial investment in equipment, saving the switching and debugging links of the material between the two types of equipment, simplifying the production process, and improving the connection efficiency; finally, through the flexible adaptation of the two processes on the continuous annealing equipment, the material can obtain good direct current bias characteristics, low hysteresis loss and stable permeability frequency characteristics through tension annealing, and excellent mechanical toughness through tension cycle, the product quality stability is greatly improved, which can meet the use requirements of high-end fields such as high-frequency electronic devices and new energy automobile driving modules, further expand the application range of amorphous and nanocrystalline alloy material, and in terms of control accuracy, the hysteresis brake roller group and the tension sensor are used to replace the traditional extensive tension control structure, the tension fluctuation is reduced by cooperating with the real-time feedback and dynamic correction mechanism, and the tension control accuracy is improved.

[0009] As an improvement, the tubular furnace heating unit comprises a glass tube body and two port glass covers, the two port glass covers are detachably connected at the front and rear ends of the glass tube body, and each port glass cover is provided with a first through hole; by adopting the detachable port glass cover structure and arranging the first through hole for the material to pass through, the maintenance and cleaning of the equipment are greatly facilitated, the port glass cover can be conveniently disassembled by the operator, the interior of the tubular furnace can be cleaned or parts can be replaced, and the smoothness and sealing of the material conveying path are ensured, which helps to maintain the stability of the protective atmosphere in the furnace.

[0010] As an improvement, the glass tube body is internally connected with a feeding end heat insulation plug and a discharging end heat insulation plug at the front and rear ends respectively, and the feeding end heat insulation plug and the discharging end heat insulation plug are both provided with second through holes arranged in the front-rear direction for the amorphous and nanocrystalline alloy material to pass through.

[0011] As an improvement, the discharging end heat insulation plug is provided with a through groove penetrating the front end face of the discharging end heat insulation plug, the glass tube body is externally connected with a gas inlet pipe for introducing annealing protective gas, and the gas inlet pipe is communicated with the inner cavity of the glass tube body through the through groove.

[0012] As an improvement, the feeding end heat insulation plug and the discharging end heat insulation plug are both made of alumina material; with this structure, the alumina material has excellent high-temperature resistance, low thermal conductivity and good high-temperature structural strength, and the use of alumina as the material of the feeding end heat insulation plug and the discharging end heat insulation plug can ensure long-term stable operation in a high-temperature annealing environment, fully exert its heat insulation performance, and ensure the uniformity of the temperature field.

[0013] As an improvement, the tubular furnace heating unit is externally connected with a gas inlet pipe for introducing annealing protective gas, and the gas inlet pipe is connected with a gas flow meter; with this structure, by connecting the gas flow meter on the gas inlet pipe, accurate monitoring and quantitative control of the flow of protective gas introduced into the tubular furnace heating unit are realized, overcoming the defects of extensive management of unstable protective gas concentration relying on manual control, and the operator can accurately set and maintain the gas flow according to the process requirements, ensuring the stability of the inert protective atmosphere during annealing, effectively avoiding material oxidation or inconsistent performance caused by atmosphere fluctuations, and improving the repeatability of the process and the product yield.

[0014] As an improvement, the vibration pulse controller further comprises a second base and a third base, the second base and the third base are both connected to the rack, the driving member is connected to the second base, and the two fixed idlers are both rotatably connected to the third base.

[0015] As an improvement, the vibration pulse controller further comprises a side plate and a guide rail pair, the side plate is connected to the second base in up and down, the guide rail pair is connected to the side plate in up and down, and the first base is connected to the guide rail pair and is arranged in sliding with the side plate; by adopting the structure, the up and down movement of the first base is guided by the side plate and the guide rail pair, and high-precision linear guidance is provided for the reciprocating movement of the movable pulley, the guide rail pair can effectively eliminate the lateral swing and jamming in the movement process, and ensure that the movable pulley runs smoothly along the up and down track, which directly improves the control precision and stability of the pulse tension fluctuation, and makes the dynamic tension stress cycle applied to the material more uniform and controllable, thereby more effectively optimizing the internal stress and microstructure of the material.

[0016] As an improvement, the driving member is a telescopic motor, the stroke adjustment range of the telescopic motor is 0-50mm, the reciprocating frequency is 1-120Hz, and the maximum thrust is 30N; by adopting the structure, the key motion parameter range for realizing effective pulse tension stress cycle is determined, the stroke range of 0-50mm is sufficient to cause significant periodic length change of the material to induce effective tension fluctuation, while avoiding excessive stretching, the frequency range of 1-120Hz covers the cycle processing requirements from low frequency to higher frequency, thereby accurately controlling the pulse fluctuation amplitude and frequency of the material tension, and the maximum thrust 30N is 1 / 5 of the fracture tension of amorphous and nanocrystalline alloy material, which can not only ensure the effective action of dynamic tension stress cycle, but also avoid excessive stretching and fracture of the material, and ensure the processing safety. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present application.

[0018] Figure 2 It is a structural schematic diagram of the vibration pulse controller part in the present application.

[0019] Figure 3 It is a position schematic diagram of the movable pulley in the initial state in the present application.

[0020] Figure 4 It is a position schematic diagram of the movable pulley in the initial state in the present application.

[0021] Figure 5 It is a structural schematic diagram of the tube furnace heating unit part in the present application.

[0022] 1, magnetic hysteresis brake roller set; 2, tension sensor; 3, vibration pulse controller; 31, first base; 32, driving member; 33, movable pulley; 34, fixed idler; 35, second base; 36, third base; 37, side plate; 38, guide rail pair; 4, tubular furnace heating unit; 41, glass tube main body; 42, port glass cover; 5, stepping motor roller set; 6, first through hole; 7, feeding end heat insulation plug; 8, discharging end heat insulation plug; 9, second through hole; 10, through slot; 11, air inlet pipe; 12, gas flow meter; 13, unpowered transmission idler set; 14, main control device. DETAILED DESCRIPTION

[0023] A continuous pulse tension heat treatment device for amorphous and nanocrystalline alloy materials will be described in detail below in combination with the drawings.

[0024] As shown in Figures 1 to 5 , a continuous pulse tension heat treatment device for amorphous and nanocrystalline alloy materials includes a rack and a main control device 14, and the rack is sequentially provided with a magnetic hysteresis brake roller set 1, a tension sensor 2, a vibration pulse controller 3, a tubular furnace heating unit 4 and a stepping motor roller set 5 from front to back, wherein the front-to-back direction is along the continuous transmission path direction of the amorphous and nanocrystalline alloy materials, and the materials as a whole are transmitted in the horizontal direction from front to back.

[0025] As shown in Figure 2 , the vibration pulse controller 3 includes a first base 31, a driving member 32, a movable pulley 33 and two fixed idlers 34, the two fixed idlers 34 are arranged at the same height along the front-to-back direction, the driving member 32 is connected and drives the first base 31 to move in the up-and-down direction, and the movable pulley 33 is rotationally connected to the first base 31 and located between the two fixed idlers 34.

[0026] Specifically, continuing to refer to Figure 2 , the vibration pulse controller 3 further includes a second base 35, a third base 36, a side plate 37 and a guide rail pair 38, the second base 35 and the third base 36 are both connected to the rack, the driving member 32 is connected to the second base 35, the two fixed idlers 34 are both rotationally connected to the third base 36, the side plate 37 is connected to the second base 35 in the up-and-down direction, the guide rail pair 38 is connected to the side plate 37 in the up-and-down direction, and the first base 31 is connected to the guide rail pair 38, so that the first base 31 is slidingly arranged with the side plate 37, wherein the driving member 32 is a telescopic motor.

[0027] As shown in Figure 5As shown, the first through hole 6 for passing the amorphous and nanocrystalline alloy materials is arranged at the front and rear ends of the tubular furnace heating unit 4; the hysteresis brake roller group 1, the tension sensor 2, the vibration pulse controller 3 and the stepper motor roller group 5 are electrically connected with the main control device 14 to realize signal interaction, parameter linkage and closed-loop control, and constitute a "continuous annealing + pulse tensile stress cycle" integrated operation system.

[0028] The hysteresis brake roller group 1 is a passive unwinding component, which has the functions of stable unwinding of the material to be annealed and initial tension application. The output torque is controlled by adjusting the excitation current of the main control device 14, so as to realize accurate tension control. The tension sensor 2 is used to collect the actual tension data in the continuous material transmission process, so as to provide feedback basis for the main control device 14 to monitor the tension state and adjust the torque of the hysteresis brake roller group 1 and the pulse parameters of the vibration pulse controller 3. The vibration pulse controller 3 is the core execution unit for realizing continuous pulse tension. The pulse frequency, amplitude and action period are adjusted by the main control device 14, so that the material tension is in a pulse type cyclic fluctuation in the set range, and the dynamic tensile stress cycle and continuous annealing are realized synchronously.

[0029] The tubular furnace heating unit 4 is the core unit for continuous annealing of the material. The furnace body adopts a quartz glass tube structure. Specifically, as shown in Figure 5 The tubular furnace heating unit 4 is connected with the gas inlet pipe 11 for introducing the annealing protective gas. The gas inlet pipe 11 is connected with the gas flow meter 12. The gas inlet pipe 11 is connected with the argon gas source. The gas flow meter 12 accurately controls the argon flow rate, so as to provide a stable inert protective environment for the continuous annealing of the material. The stepper motor roller group 5 is a driven winding component, which is connected with the main control device 14. The speed is adjusted to control the continuous transmission speed of the material by receiving the instructions from the main control device 14. At the same time, the tension balance of the material transmission is formed with the hysteresis brake roller group 1, so as to ensure the continuous and stable process of the annealing and pulse tensile stress cycle.

[0030] In addition, as shown in Figure 1 The power-free transmission idler group 13 is arranged between the tubular furnace heating unit 4 and the stepper motor roller group 5.

[0031] As shown in Figure 5As shown, the tubular furnace heating unit 4 includes a glass tube body 41 and two port glass covers 42, which are detachably connected to the front and rear ends of the glass tube body 41, and each of the two port glass covers 42 is provided with a first through hole 6; the front and rear ends of the glass tube body 41 are respectively connected with a feeding end heat insulation plug 7 and a discharging end heat insulation plug 8, and the feeding end heat insulation plug 7 and the discharging end heat insulation plug 8 are respectively provided with a second through hole 9 arranged in the front-rear direction for the amorphous and nanocrystalline alloy material to pass through; wherein the discharging end heat insulation plug 8 is provided with a through groove 10 penetrating through the front end face of the discharging end heat insulation plug 8, and a gas inlet pipe 11 is located in the part of the glass tube body 41 where the discharging end heat insulation plug 8 is arranged, and the gas inlet pipe 11 is communicated with the inner cavity of the glass tube body 41 through the through groove 10.

[0032] When the device only needs to perform continuous tension annealing, the driving member 32 does not act, and the movable pulley 33 remains stationary, so that the device completely relies on the hysteresis brake roller group 1 and the stepping motor roller group 5 of the continuous annealing equipment to cooperate to accurately complete the continuous annealing operation under constant tension, and to ensure the stability of the traditional process; when it is necessary to perform tension stress cycle on the conveyed material, the vibration pulse controller 3 can be started, the movable pulley 33 is driven by the driving member 32 to perform periodic reciprocating motion, and a pulsed dynamic tension fluctuation is applied to the continuously conveyed material to complete the tension stress cycle processing, thereby breaking through the bottleneck of traditional tension stress cycle relying on static batch processing, enabling the pulsed tension stress cycle to be synchronized with the continuous conveying and continuous annealing of the material, significantly improving the processing efficiency, perfectly matching the batch production capacity of the continuous annealing equipment, and meeting the large-scale industrialization demand; the two processes can share the conveying, temperature control and tension control system of the continuous annealing equipment, without the need to additionally purchase special tension stress cycle equipment as in the traditional mode, thereby greatly reducing the initial investment in equipment, and saving the switching and debugging links of the material between the two types of equipment, simplifying the production process, and improving the connection efficiency; finally, through the flexible adaptation of the two processes on the continuous annealing equipment, the material can not only obtain good direct current bias characteristics, low hysteresis loss and stable permeability frequency characteristics through tension annealing, but also obtain excellent mechanical toughness through tension stress cycle, thereby greatly improving the product quality stability, meeting the use requirements of high-end fields such as high-frequency electronic devices and new energy automobile driving modules, further expanding the application range of amorphous and nanocrystalline alloy materials, and in terms of control accuracy, the present application replaces the traditional extensive tension control structure with the hysteresis brake roller group 1 and the tension sensor 2, cooperates with the real-time feedback and dynamic correction mechanism to reduce the tension fluctuation, improves the tension control accuracy, optimizes the tubular furnace heating unit 4 of the continuous annealing equipment, adds the perforated heat insulation plug to improve the uniformity of the temperature field, and cooperates with the gas flow meter 12 to accurately control the protective gas, thereby ensuring the stability of the material performance during single process operation from the source.

[0033] The core value of the present application lies in functional integration and flexible switching: the two processes share the conveying and temperature control system, which can be flexibly switched without rebuilding the production line, simplifying the process, improving equipment utilization, and avoiding parameter fluctuations; the magnetic domain orientation of tension annealing and the stress release function of stress cycle synergize to make the material have excellent soft magnetic properties and processing toughness, reducing subsequent processing loss.

[0034] Specifically, as the core executive component of the passive unwinding end, the magnetic hysteresis brake roller group 1 can achieve high-precision regulation within 10%-100% of the rated torque. First, the target tension F is determined according to the material processing process requirements, and the corresponding torque parameter is calculated through the tension-torque conversion formula T=F×R (where T is the target torque) combined with the brake roller radius R of the magnetic hysteresis brake roller group 1. Then the torque parameter is converted into precise excitation current command and sent to the magnetic hysteresis brake roller group 1 drive module. After receiving the command, the magnetic hysteresis brake roller group 1 generates a stable torque using the hysteresis effect, which forms a reverse resistance on the unwinding roller and balances with the traction force of the stepper motor roller group 5 at the active winding end, cooperating with the stepper motor to drive the material at a constant speed, and finally converting into the basic constant tension required by the material. It is worth noting that the torque output of the magnetic hysteresis brake roller group 1 is basically not affected by the slip speed, and can achieve long-term continuous stable slip, providing persistent constant torque support for the unwinding process. To further improve the tension control precision, a tension sensor 2 is introduced to build a closed-loop control system: the tension sensor 2 collects the actual tension data of the material in the conveying process in real time, and feeds back the signal to the main control equipment 14. When the main control equipment 14 detects that the deviation between the actual tension and the set value exceeds 0.1N, it immediately starts the fine tuning program, indirectly corrects the output torque of the magnetic hysteresis brake roller group 1 by changing the excitation current (using the linear correlation characteristics of current and torque), and then controls the material tension deviation within ±0.05N, ensuring that the tension in the continuous annealing process is always within the stable interval required by the process.

[0035] The vibration pulse controller 3 is used to apply pulse tension to amorphous and nanocrystalline alloy materials in continuous conveying process, realizing dynamic tension stress cycle regulation of the materials. In the mechanical structure design, the vibration pulse controller 3 adopts a three-point triangular distribution layout: the front fixed idler 34, the middle movable pulley 33 and the rear fixed idler 34 are arranged in a triangular shape to form a stable material support and tension adjustment architecture; the front and rear fixed idlers 34 are rigidly fixed by bearing seats to provide a stable reference; the stroke adjustment range of the telescopic motor is 0-50mm, the reciprocating frequency supports 1-120Hz stepless adjustment, and the maximum thrust is 30N. When working, it can drive the movable pulley 33 to move up and down at a high frequency, thereby accurately controlling the pulse fluctuation amplitude and frequency of the material tension.

[0036] The pulse tension control process is coordinated with the continuous material conveying: First, the hysteresis brake roller group 1 applies a basic constant tension (e.g., 20N) to the material, keeping it taut and maintaining continuous conveying; for example... Figure 3 As shown, at this time, the contact surface between the movable pulley 33 and the material, and the contact surfaces between the fixed idler wheels 34 on both sides and the material, are at the same horizontal height. The material is conveyed along a horizontal path and is under basic tension. Then, the telescopic motor is started. When the movable pulley 33 moves upward, as shown... Figure 4 As shown, the effective transport path of the material is lengthened and tensile strain is generated, while the material tension maintains the basic tension (e.g., 20N); when the movable pulley 33 returns to its original position downwards, it returns to the state shown in the figure. Figure 3 As shown, the effective material transport path is shortened, the tightness is reduced, and the tension smoothly drops to a set lower limit (e.g., 10N). Through the periodic reciprocating motion of the telescopic motor, the material tension can form a stable sinusoidal pulse fluctuation in the 10-20N range, ultimately constructing a uniform and controllable dynamic tensile stress field for the material during continuous annealing, achieving the process goal of continuous pulse tension heat treatment for amorphous and nanocrystalline alloy materials.

[0037] The inlet heat insulation plug 7 and outlet heat insulation plug 8 in the tubular furnace heating unit 4 are both made of alumina. The size of the second through hole 9 is precisely matched with the material to ensure smooth transmission. At the same time, the heat insulation plug can significantly block heat leakage from the furnace, reducing the causes of temperature fluctuations at the source and building a constant temperature foundation for the heating zone. It should be noted that the middle area of ​​this device is the core heating zone of the tubular furnace. Its outer side is equipped with the furnace body's own insulation structure (such as a ceramic fiber insulation layer), which can maintain the temperature stability of the heating zone itself. Therefore, there is no need to add additional insulation components. This structured thermal field design provides continuous and stable temperature conditions for the directional alignment of material magnetic domains and stress release, ensuring that the material in different locations receives consistent heat treatment results.

[0038] To prevent oxidation during material annealing, the inlet pipe 11 connects the gas flow meter 12 to the inert gas cylinder. The gas flow meter 12 is a rotor flow meter, establishing a stable control system of "gas source - visual metering - in-furnace delivery". This device uses an industrial-grade rotor flow meter, with flow rate adjusted via a mechanical knob, eliminating the need for electronic control and making operation intuitive and convenient. The rotor flow meter's scale panel directly displays the flow rate value, allowing operators to accurately determine the real-time flow rate via the corresponding scale on the float. The control logic is as follows: Before annealing, the gas cylinder valve is slowly opened, and then the valve opening is adjusted using the rotor flow meter's built-in mechanical knob to maximize the flow rate for rapid replacement of air in the furnace. After replacement, the mechanical knob is rotated again to adjust the flow rate to the required process value (e.g., 3-5 L / min). No additional control commands are required throughout the annealing process; precise flow rate adjustment and stable maintenance are achieved solely through the mechanical structure, providing a continuous and reliable inert protective atmosphere for the material. The equipment is low-cost and easy to maintain, making it particularly suitable for the process scenarios of small and medium-sized enterprises.

[0039] The material conveying speed is directly controlled by the main control device 14, which controls the rotational speed of the stepper motor roller group 5. The core principle is to precisely match the annealing process requirements through a "rotational speed - linear velocity" conversion. The main control device 14 can directly adjust the target rotational speed of the take-up roller to regulate the material conveying speed (maximum speed 300 rpm). Combined with the fixed parameters of the take-up roller in this device (radius 31 mm, diameter 62 mm), the system automatically calls the linear velocity conversion formula V = π × D × n / 60 (where V is the material linear velocity, D is the take-up roller diameter, and n is the take-up roller rotational speed) to complete the parameter conversion. Taking a take-up roller rotational speed of 8 rpm as an example, substituting the diameter of 0.062 m, we can calculate that the material linear velocity is π × 0.062 m × 8 / 60 ≈ 0.026 m / s, or 1.56 m / min, ensuring that the speed parameters are precisely matched with the annealing process.

[0040] This device breaks through the limitations of traditional static tensile stress cycling, simultaneously applying continuous pulse tensile stress to continuously conveyed strips, wires, and other continuous materials, achieving integrated batch processing of "continuous annealing-pulse tensile stress cycling." The device is compact in structure and simple to operate, adapting to existing production lines without complex modifications. It can seamlessly connect with ton-scale strip and wire winding systems, ensuring the continuity of subsequent processes. Simultaneous hardness control enables integrated pre-processing before stamping, further streamlining the process and demonstrating clear feasibility for large-scale deployment. In summary, this device achieves functional integration and process synergy, ensuring stable continuous tension annealing of materials while simultaneously applying pulse tensile stress cycling to continuously conveyed materials, providing an efficient solution for optimizing the comprehensive performance and mass production of amorphous and nanocrystalline alloy materials.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiment. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A continuous pulsed tensile thermal treatment apparatus for amorphous and nanocrystalline alloy materials, characterized by, It comprises a rack and a main control device (14), the rack is provided with a magnetic hysteresis brake roller group (1), a tension sensor (2), a vibration pulse controller (3), a tubular furnace heating unit (4) and a stepping motor roller group (5) from front to back in sequence; The vibration pulse controller (3) comprises a first base (31), a driving member (32), a movable pulley (33) and two fixed idlers (34), the two fixed idlers (34) are arranged in the same height along the front and back directions, the driving member (32) is connected with and drives the first base (31) to move along the up and down directions, the movable pulley (33) is rotatably connected on the first base (31) and located between the two fixed idlers (34). The tubular furnace heating unit (4) is provided with a first through hole (6) for passing the amorphous and nanocrystalline alloy materials at the front and back ends. The magnetic hysteresis brake roller group (1), the tension sensor (2), the vibration pulse controller (3) and the stepping motor roller group (5) are electrically connected with the main control device (14).

2. The apparatus for continuous pulsed tensile thermal processing of amorphous and nanocrystalline alloy materials of claim 1, wherein, The tubular furnace heating unit (4) comprises a glass tube main body (41) and two port glass covers (42), the two port glass covers (42) are detachably connected at the front and back ends of the glass tube main body (41), and each of the port glass covers (42) is provided with one first through hole (6).

3. The apparatus for continuous pulsed tensile thermal processing of amorphous and nanocrystalline alloy materials of claim 2, wherein, The glass tube main body (41) is connected with a feeding end heat insulation plug (7) and a discharging end heat insulation plug (8) at the front and back ends inside, respectively, the feeding end heat insulation plug (7) and the discharging end heat insulation plug (8) are provided with a second through hole (9) for passing the amorphous and nanocrystalline alloy materials along the front and back directions.

4. The apparatus for continuous pulsed tensile thermal treatment of amorphous and nanocrystalline alloy materials according to claim 3, characterized in that, The discharging end heat insulation plug (8) is provided with a through groove (10) penetrating the front end surface of the discharging end heat insulation plug (8), and the glass tube main body (41) is connected with a gas inlet pipe (11) for passing the annealing protective gas, the gas inlet pipe (11) communicates with the inner cavity of the glass tube main body (41) through the through groove (10).

5. The apparatus for continuous pulsed tensile thermal processing of amorphous and nanocrystalline alloy materials of claim 3, wherein, The feeding end heat insulation plug (7) and the discharging end heat insulation plug (8) are made of alumina material.

6. The apparatus for continuous pulsed tensile thermal processing of amorphous and nanocrystalline alloy materials of claim 1, wherein, The tubular furnace heating unit (4) is connected with a gas inlet pipe (11) for passing the annealing protective gas, and the gas inlet pipe (11) is connected with a gas flow meter (12).

7. The apparatus for continuous pulsed tensile thermal processing of amorphous and nanocrystalline alloy materials of claim 1, wherein, The vibration pulse controller (3) further comprises a second base (35) and a third base (36), the second base (35) and the third base (36) are connected on the rack, the driving member (32) is connected on the second base (35), and the two fixed idlers (34) are rotatably connected on the third base (36).

8. The apparatus for continuous pulsed tensile thermal processing of amorphous and nanocrystalline alloy materials of claim 7, wherein, The vibration pulse controller (3) further comprises a side plate (37) and a guide rail pair (38), the side plate (37) is connected on the second base (35) along the up and down directions, the guide rail pair (38) is connected on the side plate (37) along the up and down directions, and the first base (31) is connected with the guide rail pair (38) and is slidably arranged with the side plate (37).

9. The apparatus for continuous pulsed tensile thermal processing of amorphous and nanocrystalline alloy materials of claim 1, wherein, The driving member (32) is a telescopic motor, the stroke adjustment range of the telescopic motor is 0-50mm, the reciprocating frequency is 1-120Hz, and the maximum thrust is 30N.

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