A direct current rapid heating and automatic cold and hot cycle integrated device and method thereof

Abstract

The application discloses a kind of direct current fast heating and automatic cold and hot cycle integration device and method, it is related to metal material organization control technical field.The device integrates heating module, cooling module, lifting module, main control module and temperature control module.Direct current fast heating is realized sample second-level temperature rise, and cold and hot cycle is completed in cooperation with liquid nitrogen cooling module;Lifting module is driven under motor, and the automatic switching of sample between heating station and cryogenic station is completed;Main control module realizes full-process automatic control by setting cycle time, cycle number and other parameters, and temperature sensor real-time display sample temperature data.The application can realize the flexible setting of electric heating temperature, cold and hot residence time, cycle number and other parameters, and is suitable for cold and hot cycle processing of new structural materials such as amorphous alloy, high-entropy alloy, traditional engineering materials such as titanium alloy and steel, and significantly improves control precision and processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of metal material microstructure control technology, specifically to an integrated device and method for DC rapid heating and automatic hot and cold circulation. Background Technology

[0002] Amorphous alloys are glassy materials obtained by rapidly cooling a high-temperature melt. Unlike traditional crystalline materials, amorphous alloys possess a long-range disordered, short-range ordered atomic structure. This unique microstructure endows them with excellent comprehensive properties, including high strength, high hardness, and excellent electromagnetic properties, as well as wear and corrosion resistance. The superior mechanical properties of amorphous alloys make them valuable in aerospace and defense industries. However, room-temperature brittleness is a critical problem for amorphous alloys, severely limiting their application as structural components in engineering.

[0003] In recent years, researchers have conducted extensive exploratory work on improving the room-temperature plasticity of amorphous alloys. "Rejuvenation" refers to the process by which amorphous alloys transition from a low-energy state to a high-energy state, which is the reverse process of structural relaxation. Rejuvenation treatment increases the free volume content within the amorphous alloy by regulating its microstructure, thereby improving its plastic deformation capacity. Thermal cycling is a novel method for rejuvenating amorphous alloys. Through alternating low-temperature and high-temperature environments, it significantly increases the disorder of the amorphous alloy's microstructure, thus achieving a rejuvenating effect. This method was proposed by SV Ketov et al. in 2015, involving immersing the amorphous alloy in liquid nitrogen (77 K) for several minutes and then placing it at room temperature for several minutes, repeating this cycle several times. It was found that La... 55 Ni 20 Al 25 Zr 62 Cu 46 Fe5Al9, Cu 46 Zr 46 Both the bulk Al7Gd1 amorphous materials and strips exhibited varying degrees of structural "rejuvenation." Furthermore, after thermal cycling, the plastic strain capacity of both the bulk and strip amorphous materials of all three compositions was enhanced. Therefore, thermal cycling is considered an effective means of controlling the amorphous structure and achieving "rejuvenation" of amorphous alloys.

[0004] Despite the significant advantages of hot and cold cycle rejuvenation technology, existing hot and cold cycle processing equipment still has many shortcomings, which limit the improvement of the rejuvenation effect of amorphous samples: (1) Inefficient heating method and low heating rate. Traditional hot and cold cycles use conventional medium heat transfer methods such as oil bath and water bath heating, which have a slow heating rate, slow thermal response and cannot form transient thermal stress, resulting in limited rejuvenation effect. (2) Low degree of automation. Most traditional devices rely on manual transfer of samples, which is time-consuming and laborious, and the positioning accuracy of samples when switching between high and low temperature modules is poor. Although a few integrated devices use robotic arms for transfer, the structure is complex and lacks manual fine-tuning function, which can easily cause the sample to collide with the tank wall or not be fully immersed in liquid nitrogen, resulting in sample damage or invalid test data. (3) Fixed cycle mode and parameters. Most existing equipment is a fixed "heating-cooling" mode, which cannot accurately change parameters such as heating temperature and cycle period, which limits the applicability of amorphous alloy rejuvenation process and the optimization and improvement of parameters.

[0005] Therefore, this invention uses direct current heating as a transient heating technology to develop an automatic cyclic testing device with direct current heating-liquid nitrogen cooling cycle, multi-mode switching, and flexible parameter control, in order to solve the above problems. Summary of the Invention

[0006] To address the shortcomings of the aforementioned background technologies, this invention provides an integrated device and method for DC rapid heating and automatic thermal cycling, which addresses the technical problems of slow heating rates, low temperature control accuracy, insufficient automation, and cumbersome and time-consuming operation in existing thermal cycling devices. The device integrates a heating module, a cooling module, a lifting module, a main control module, and a temperature control module. Specifically, it achieves sample heating in seconds through DC rapid heating, which works in conjunction with a liquid nitrogen cooling module to complete the thermal cycling process. The lifting module, driven by a motor, automatically switches the sample between the heating station and the cryogenic station. The main control module achieves fully automated control by setting parameters such as cycle time and number of cycles, and a temperature sensor displays the sample temperature data in real time. The device provided by this invention allows for flexible setting of parameters such as electric heating temperature, thermal residence time, and number of cycles, and is suitable for thermal cycling treatment of novel structural materials such as amorphous alloys and high-entropy alloys, as well as traditional engineering materials such as titanium alloys and steel, significantly improving control accuracy and processing efficiency.

[0007] The first objective of this invention is to provide an integrated device for rapid DC heating and automatic hot and cold circulation for the rejuvenation treatment of amorphous alloys. This device includes: The lifting module includes a vertically arranged guide rail, a slidable slider on the guide rail, a drive mechanism, and a sample clamping unit on the slider; the drive mechanism drives the slider to move up and down along the guide rail; the sample clamping unit includes two clamping ends arranged opposite each other. The heating module uses a DC power supply for heating and includes an electrode assembly. The electrode assembly is disposed on a sample clamping unit. When the sample clamping unit clamps the sample, it tightly contacts the electrode assembly with both ends of the sample. The output end of the DC power supply is electrically connected to the electrode assembly through a wire. The cooling module, which is a nitrogen storage tank for storing liquid nitrogen, is located directly below the sample clamping unit; Temperature control module, used to monitor the real-time temperature of the sample; The main control module, which is connected to the lifting module, heating module and temperature control module, is used to control the sample clamping unit to move downward into the cooling module and upward out of the cooling module, and to control the heating module to heat the sample to a preset temperature when the sample is outside the cooling module.

[0008] In one embodiment, the electrode assembly includes a positive electrode and a negative electrode, which are respectively disposed on the clamping end of the sample clamping unit; The output terminals of the DC power supply include a positive output terminal and a negative output terminal, which are electrically connected to the positive and negative terminals of the electrode assembly, respectively.

[0009] In one embodiment, a DC power supply is electrically connected to both ends of the sample via the positive and negative terminals of the electrode assembly. After the power is applied, the current flows through the sample to form a closed circuit, and the sample is rapidly heated by utilizing the Joule heating effect of the sample's own resistance.

[0010] In one embodiment, a ball screw parallel to the guide rail is provided on one side of the guide rail, and a sliding slider is provided on the guide rail. The slider is sleeved on the ball screw and threadedly connected. While the driving mechanism drives the ball screw to rotate clockwise or counterclockwise, it also drives the slider to move up and down along the guide rail.

[0011] In one embodiment, the temperature control module is an infrared thermometer, which is located on one side of the sample clamping unit, with the infrared temperature probe facing the sample heating area, and the detected temperature is displayed in real time through a temperature display.

[0012] In one embodiment, when heating with a DC power supply, it supports dual-mode output of constant current and constant voltage. The heating power is controlled by adjusting the current or voltage knob, and the temperature control module displays the real-time temperature of the sample to achieve closed-loop temperature control. At the same time, the heating rate and target temperature of the sample are controlled by adjusting the output parameters of the DC power supply to achieve a stable and controllable heating effect.

[0013] In one embodiment, the main control module further includes an operation interface, which is a main control page and four functional sub-control pages: vertical lifting, heating, fine adjustment, and cycle. The lifting control page allows you to set the sample rising and falling time as well as the waiting time. The heating control page allows you to set the heating time and the waiting time before and after heating; The fine-tuning control page allows for slight adjustments to the sample's position. The cycle control page has two preset switchable cycle modes: "Descend-Cool-Rise-Heat" and "Heat-Descend-Cool-Rise", and supports setting the target number of cycles and displaying the current number of cycles.

[0014] In one embodiment, the main control module has a built-in loop control program that supports setting parameters such as electric heating time, liquid nitrogen cooling residence time, number of cycles, sample rise and fall time, and supports online modification and storage of parameters.

[0015] The second objective of this invention is to provide a method for rejuvenating amorphous alloys, employing a direct current rapid heating and automatic hot-cold circulation integrated device. This method includes: Determine the parameters for the hot and cold cycles, specifically including: electric heating treatment temperature, cryogenic treatment temperature, heat treatment time, cryogenic treatment time, and number of cycles; Device debugging and sample loading: Fix the sample in the sample clamping unit and ensure that both ends are in close contact with the electrodes; By selecting the "heating-descent-cooling-rise" or "descent-cooling-rise-heating" cycle mode through the main control module and setting the hot and cold cycle parameters, the cycle is executed according to the preset parameters after starting: the heating module performs electric heating for a preset time, the drive mechanism drives the sample to be immersed in liquid nitrogen in the cooling module for a preset cooling time, and then rises back to the initial position to complete one cycle; the above process is automatically repeated until the preset number of cycles is completed.

[0016] In one embodiment, the sample comprises an Fe-based, Zr-based, or Co-based amorphous alloy system.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention provides an integrated device and method for DC rapid heating and automatic thermal cycling. For the first time, this invention combines second-level DC rapid heating with liquid nitrogen deep cryogenic cycling, introducing more free volume into amorphous alloys and overcoming the limitations of traditional heating methods. The main control module has two preset cycling modes, allowing the device to flexibly adapt to various experimental needs. Whether deep cryogenic pretreatment is required or conventional hot-then-cold treatment is needed, it can be achieved by switching modes, overcoming the technical bottleneck of poor applicability of existing equipment's cycling methods. The fully automated operation replaces manual transfer, saving manpower and time, and improving experimental efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the thermal cycling device of the present invention; Figure 2 This is a schematic diagram of the function pages of the control panel of the main control module of the present invention; Figure 3 This is a graph showing the relationship between the applied current and the achievable temperature of the sample in the heating module of this invention; Figure 4 This is a schematic diagram of the hot and cold cycle process of the present invention. Detailed Implementation

[0019] To enable those skilled in the art to better understand and implement the technical solutions of the present invention, the present invention will be further described below in conjunction with specific embodiments and accompanying drawings. However, the embodiments described are not intended to limit the present invention.

[0020] This invention addresses the technical shortcomings of existing amorphous alloy thermal cycling rejuvenation devices, such as inefficient heating methods, rigid cycling patterns, and low automation. It provides an automatic cycling test device with rapid DC heating and liquid nitrogen cooling, aiming to improve the rejuvenation effect of amorphous alloys.

[0021] To achieve the above objectives, see Figure 1 As shown, a DC rapid heating and automatic hot and cold circulation integrated device is used for the rejuvenation treatment of amorphous alloys. The device includes a lifting module 3, a heating module 1, a cooling module 2, a temperature control module 5, and a main control module 4. The lifting module 3 includes a vertically arranged guide rail 31, a slidable slider 32 on the guide rail 31, a drive mechanism 34, and a sample clamping unit 35 on the slider 32. The drive mechanism 34 drives the slider 32 to move up and down along the guide rail 31. The sample clamping unit 35 includes two opposing clamping ends. The sample clamping unit 35 is used to clamp the sample through the two clamping ends. The heating module 1 uses a DC power supply for heating and includes an electrode assembly 11. The electrode assembly 11 is disposed on the sample clamping unit 35. When the sample clamping unit 35 clamps the sample, the electrode assembly 11 is tightly attached to both ends of the sample. The output end of the DC power supply is electrically connected to the electrode assembly 11 through a wire. The cooling module 2 is a nitrogen storage tank for storing liquid nitrogen, located directly below the sample clamping unit 35. When the heating module 1 heats the sample held by the sample clamping unit 35, the sample on the sample clamping unit 35 moves downwards while the slider 32 moves downwards, thus cooling the sample. After cooling for a certain period of time, the sample on the sample clamping unit 35 moves upwards to the outside of the nitrogen storage tank while the slider 32 moves upwards, thus completing one heating and cooling cycle. During the heating process, the temperature control module 5 is used to monitor the real-time temperature of the sample; the entire heating and cooling cycle is controlled by the main control module 4. The main control module 4 is connected to the lifting module 3, the heating module 1, and the temperature control module 5. It is used to control the sample clamping unit 35 to move downward into the cooling module 2 and upward outside the cooling module 2, and to control the heating module 1 to heat the sample to a preset temperature when the sample is outside the cooling module 2.

[0022] The main control module 4, as the core control hub of the device, integrates four major control functions: vertical lifting, heating, fine-tuning, and cycling. It forms a signal connection and coordinated control with the lifting module 3, heating module 1, and temperature control module 5. Before the cycle starts, the fine-tuning function of the main control module 4 completes the precise calibration of the sample station, and synchronously presets the test conditions such as the number of cycles, heating parameters, and lifting parameters, and sends them to the corresponding modules. After the cycle starts, the heating module 1 performs DC Joule heating on the sample. After the preset heating time is reached, the main control module 4 immediately shuts down the heating module 1 and drives the lifting module 3 to move the sample down to immerse it in the liquid nitrogen environment of the cooling module 2 to complete the deep cryogenic cooling. After the preset dwell time is reached, the main control module 4 controls the sample to move up and reset to the heating station, completing a single cold and hot cycle. The main control module 4 automatically accumulates the number of cycles until the preset total number of cycles is completed, and then controls the device to reset to a safe state.

[0023] To enable the heating module 1 to heat the sample, an electrode assembly 11 is provided, comprising a positive and a negative electrode, respectively disposed on the clamping end of the sample clamping unit 35. The output end of the DC power supply includes a positive output end and a negative output end, which are electrically connected to the positive and negative electrodes of the electrode assembly 11, respectively. The DC power supply is electrically connected to both ends of the sample via the positive and negative electrodes of the electrode assembly 11. After energization, current flows through the sample to form a closed loop, utilizing the Joule heating effect of the sample's own resistance to achieve rapid heating of the sample.

[0024] When using DC power for heating, it supports dual-mode output of constant current and constant voltage. The heating power can be controlled by adjusting the current or voltage knob, and the temperature control module 5 displays the real-time temperature of the sample to achieve closed-loop temperature control. At the same time, the heating rate and target temperature of the sample can be controlled by adjusting the output parameters of the DC power supply to achieve a stable and controllable heating effect.

[0025] To enable the drive mechanism to move the slider up and down along the guide rail, a ball screw 33 parallel to the guide rail 31 is provided on one side of the guide rail 31. A sliding slider 32 is provided on the guide rail 31, and the slider 32 is sleeved on the ball screw 33 and threadedly connected. While the drive mechanism 34 drives the ball screw 33 to rotate clockwise or counterclockwise, it also drives the slider 32 to move up and down along the guide rail 31. This achieves the up and down movement of the slider along the guide rail.

[0026] In this invention, the temperature control module 5 is an infrared thermometer, which is located on one side of the sample clamping unit 35. The infrared temperature probe faces the sample heating area, and the detected temperature is displayed in real time through the temperature display 51.

[0027] See Figure 2 As shown, the main control module 4 also includes an operation interface, which is the main control page, as well as four sub-control pages for vertical lifting, heating, fine adjustment, and circulation. The vertical lifting control page allows you to set the sample rising and falling time as well as the waiting time. The heating control page allows you to set the heating time and the waiting time before and after heating; The fine-tuning control page allows for slight adjustments to the sample's position. The cycle control page has two preset switchable cycle modes: "Descend-Cool-Rise-Heat" and "Heat-Descend-Cool-Rise", and supports setting the target number of cycles and displaying the current number of cycles.

[0028] It should be noted that "descent-cooling-ascent-heating" means that the sample first descends into the cooling module 2 for cooling, and then rises out of the cooling module 2 before being heated. "Heating-Descending-Cooling-Rising" means that the sample is first heated, then descends into the cooling module 2 for cooling, and then rises out of the cooling module 2.

[0029] The main control module 4 has a built-in loop control program that supports setting parameters such as electric heating time, liquid nitrogen cooling residence time, number of cycles, sample rise and fall time, and supports online modification and storage of parameters.

[0030] In this invention, the heating module and the lifting module are integrated. The power supply is electrically connected to both ends of the sample via electrodes. After power is applied, current flows through the sample to form a closed loop, and the sample is rapidly heated by utilizing the Joule heating effect of the sample's own resistance. The lifting module consists of a guide rail, a slider, a ball screw, a drive motor, and a sample clamping position, enabling precise switching of the sample between the heating station and the liquid nitrogen tank.

[0031] The heating module uses a DC power supply and supports both constant current (CC) and constant voltage (CV) output modes. Heating power is controlled by adjusting the current or voltage knob, and a temperature control module displays the real-time sample temperature to achieve closed-loop temperature control. The DC power output of the heating module is electrically connected to the electrode assembly on the lifting module via wires and a sample clamp. The electrodes employ a symmetrical clamping structure to tightly fit both ends of the sample. Utilizing the Joule heating effect generated when DC current flows through the sample's resistance, the sample heats up uniformly and rapidly. Simultaneously, the heating rate and target temperature of the sample can be controlled by adjusting the output parameters of the DC power supply, achieving a stable and controllable heating effect.

[0032] The cooling module is a standard liquid nitrogen tank, which requires manual monitoring of the remaining liquid nitrogen level and manual replenishment.

[0033] The temperature control module includes a non-contact infrared temperature probe, which faces the sample heating area. The detected temperature is displayed in real time through a temperature display, and a precise temperature control program is used to ensure that the set temperature is accurately reached.

[0034] The principle of the precise temperature control program provided by this invention is as follows: 1) Target temperature set to T s The temperature measured by the infrared probe was T All measurements are in absolute temperature, measured in Kelvin (K); the sampling period of the infrared probe is... τ The control cycle of the solid-state relay controlling the on / off state of the control circuit is 0.5 seconds. τ .

[0035] 2) p The relative error of the temperature at any given time is:

[0036] In the formula, T p for p Temperature measured by the infrared probe at any given time; p The cumulative relative error at time t is: ; The relay in the first p Duty cycle within +1 control cycle t d It is given by the following formula:

[0037] In the formula, a and b The constant is denoted by the following values ​​in this invention: 1.0 < a <3.0, 0.02< b <0.10. Meanwhile, for t d The value of is truncated: when t d > 0.5 τ season t d = 0.5 τ ;when t d When <0, let t d= 0.

[0038] This invention provides a method for rejuvenating amorphous alloys, employing the aforementioned integrated device for rapid DC heating and automatic hot and cold circulation. The method includes: Determine the parameters for the hot and cold cycles, specifically including: electric heating treatment temperature, cryogenic treatment temperature, heat treatment time, cryogenic treatment time, and number of cycles; During device debugging and sample loading, the sample is fixed in the sample clamping unit 35, ensuring that both ends are in close contact with the electrodes; By selecting the "heating-descent-cooling-ascending" or "descent-cooling-ascending-heating" cycle mode through the main control module 4 and setting the hot and cold cycle parameters, the cycle is executed according to the preset parameters after starting: after the heating module 1 performs electric heating for a preset time, the drive mechanism drives the sample to be immersed in liquid nitrogen in the cooling module 2 for a preset cooling time, and then rises back to the initial position to complete one cycle; the above process is automatically repeated until the preset number of cycles is completed.

[0039] To illustrate the automatic circulation device for rapid DC heating and liquid nitrogen cooling provided by this invention, specific examples are provided. The device is suitable for the rejuvenation treatment of amorphous alloys, especially for common amorphous alloy systems such as Fe-based, Zr-based, and Co-based alloys. The following detailed explanation uses the rejuvenation treatment of Fe-based amorphous alloy strips as an example to illustrate its implementation steps: Step 1: Determine the hot and cold cycle scheme, specifically including: electric heating treatment temperature. T 1. Cryogenic treatment temperature T 2. Heat treatment time t 1. Cryogenic treatment time t 2. Number of loops n The temperature for electric heating treatment is determined by the glass transition temperature of the amorphous alloy. T 1 is set to 0.42 T g -0.62 T g The cryogenic treatment temperature is the liquid nitrogen temperature, i.e., 77 K; the heat treatment time and the cryogenic treatment time are both 60 s; the number of cycles can be set to different gradient values ​​according to the experimental needs.

[0040] See Figure 3 The graph shows the relationship between the applied current in the heating module and the achievable temperature of the sample; the output current of the heating module is determined based on the graph.

[0041] Step 2: Device Debugging and Sample Loading. Place multiple thin strips neatly stacked horizontally on both electrodes, securing them with clamps to ensure tight contact between both ends and the electrodes. Use the manual fine-tuning function to ensure the sample is immersed below the liquid nitrogen surface without contacting the tank walls or bottom.

[0042] Step 3: Set the cycle parameters in the main control panel. Mode selection: Select either "Heating-Lowering-Cooling-Rising" or "Lowering-Cooling-Rising-Heating" cycle mode, and set the heat treatment time as described above. t 1. Cryogenic treatment time t 2. Number of loops n After startup, the cycle will execute according to preset parameters: electric heating. t One hour later, the lifting drive unit immediately immerses the thin strip in liquid nitrogen for cooling. t After 2 hours, the machine returns to its initial position, completing one cycle. The system automatically repeats this process until completion. n In the next loop, the control panel displays the target loop count and the current loop count in real time. See also Figure 4 As shown, the hot and cold cycle process.

[0043] Finally, different settings can be configured. T 1. t 1. t 2. n Multiple sets of experiments were conducted, and relevant parameters were recorded. The treated thin strip was subjected to DSC testing, free bending, and hardness testing. The optimal parameter combination was selected based on indicators such as the increase in relaxation enthalpy and the decrease in hardness due to increased bending strain.

[0044] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention; at the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A DC rapid heating and automatic hot and cold circulation integrated device, characterized in that, The apparatus for rejuvenating amorphous alloys includes: The lifting module (3) includes a vertically arranged guide rail (31), a slider (32) that can slide on the guide rail (31), a drive mechanism (34), and a sample clamping unit (35) arranged on the slider (32); the drive mechanism (34) drives the slider (32) to move up and down along the guide rail (31); the sample clamping unit (35) includes two clamping ends arranged opposite to each other. The heating module (1) is heated by DC power supply and includes an electrode assembly (11). The electrode assembly (11) is disposed on the sample clamping unit (35). When the sample clamping unit (35) clamps the sample, the electrode assembly (11) is tightly attached to both ends of the sample. The output end of the DC power supply is electrically connected to the electrode assembly (11) through a wire. The cooling module (2) is a nitrogen storage tank for storing liquid nitrogen, located directly below the sample clamping unit (35); Temperature control module (5) is used to monitor the real-time temperature of the sample; The main control module (4) is connected to the lifting module (3), the heating module (1), and the temperature control module (5) by signal connection. It is used to control the sample clamping unit (35) to move downward into the cooling module (2) and upward outside the cooling module (2), and to control the heating module (1) to heat the sample to a preset temperature when the sample is outside the cooling module (2).

2. The integrated DC rapid heating and automatic hot and cold circulation device according to claim 1, characterized in that, The electrode assembly (11) includes a positive electrode and a negative electrode, which are respectively disposed on the clamping end of the sample clamping unit (35); The output terminals of the DC power supply include a positive output terminal and a negative output terminal, which are electrically connected to the positive and negative terminals of the electrode assembly (11), respectively.

3. The integrated DC rapid heating and automatic hot and cold circulation device according to claim 2, characterized in that, The DC power supply is electrically connected to both ends of the sample via the positive and negative terminals of the electrode assembly (11). After the power is turned on, the current flows through the sample to form a closed circuit, and the sample is rapidly heated by utilizing the Joule heating effect of the sample's own resistance.

4. The integrated DC rapid heating and automatic hot and cold circulation device according to claim 1, characterized in that, A ball screw (33) parallel to the guide rail (31) is provided on one side. A sliding slider (32) is provided on the guide rail (31). The slider (32) is sleeved on the ball screw (33) and threadedly connected. The driving mechanism (34) drives the ball screw (33) to rotate clockwise or counterclockwise, while driving the slider (32) to move up and down along the guide rail (31).

5. The integrated DC rapid heating and automatic hot and cold circulation device according to claim 1, characterized in that, The temperature control module (5) is an infrared thermometer, which is located on one side of the sample clamping unit (35). The infrared temperature probe faces the sample heating area and the detected temperature is displayed in real time through the temperature display (51).

6. The integrated DC rapid heating and automatic hot and cold circulation device according to claim 5, characterized in that, When using DC power supply for heating, it supports constant current and constant voltage dual-mode output. The heating power can be controlled by adjusting the current or voltage knob. The temperature control module (5) displays the real-time temperature of the sample to achieve closed-loop temperature control. At the same time, the heating rate and target temperature of the sample can be controlled by adjusting the output parameters of the DC power supply to achieve a stable and controllable heating effect.

7. The integrated DC rapid heating and automatic hot and cold circulation device according to claim 1, characterized in that, The main control module (4) also includes an operation interface, which is the main control home page, and four functional sub-control pages: vertical lifting, heating, fine adjustment, and cycle. The lifting control page allows you to set the sample rising and falling time as well as the waiting time. The heating control page allows you to set the heating time and the waiting time before and after heating; The fine-tuning control page allows for slight adjustments to the sample's position. The cycle control page has two preset switchable cycle modes: "Descend-Cool-Rise-Heat" and "Heat-Descend-Cool-Rise", and supports setting the target number of cycles and displaying the current number of cycles.

8. The integrated DC rapid heating and automatic hot and cold circulation device according to claim 1, characterized in that, The main control module (4) has a built-in loop control program that supports setting parameters such as electric heating time, liquid nitrogen cooling residence time, number of cycles, sample rise and fall time, and supports online modification and storage of parameters.

9. A method for rejuvenating an amorphous alloy, characterized in that, The method using the DC rapid heating and automatic hot and cold circulation integrated device according to any one of claims 1 to 8 includes: Determine the parameters for the hot and cold cycles, specifically including: electric heating treatment temperature, cryogenic treatment temperature, heat treatment time, cryogenic treatment time, and number of cycles; During device debugging and sample loading, the sample is fixed in the sample clamping unit (35) and both ends are kept in close contact with the electrodes. By selecting the "heating-descent-cooling-rise" or "descent-cooling-rise-heating" cycle mode through the main control module (4), and setting the hot and cold cycle parameters, the cycle is executed according to the preset parameters after the start-up: the heating module (1) performs electric heating for a preset time, the drive mechanism drives the sample to be immersed in liquid nitrogen in the cooling module (2) for a preset cooling time, and then rises back to the initial position to complete one cycle; the above process is automatically repeated in sequence until the preset number of cycles is completed.

10. The method for rejuvenating amorphous alloys according to claim 9, characterized in that, The samples include Fe-based, Zr-based, or Co-based amorphous alloy systems.

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