A method and device for detecting bimetallic thermal sensitivity

Abstract

This application discloses a method and apparatus for detecting the thermosensitive properties of bimetallic materials. The method includes: using a torsion meter to detect the height M0 of a standard plate; replacing the standard plate with a sample metal; controlling the temperature of a first oil tank to T1, and inserting the torsion meter with the sample metal fixed in it into the oil trough of the first oil tank; using the torsion meter to detect the height M1 of the sample metal; controlling the temperature of a second oil tank to T2, and inserting the torsion meter into the oil trough of the second oil tank, where T2 > T1; using the torsion meter to detect the height M2 of the sample metal; and automatically calculating the specific bending of the sample metal based on the heights M0, M1, and M2. This method effectively addresses the shortcomings of existing technologies by optimizing the detection process, adding benchmark calibration, and automating data processing, while balancing detection efficiency, data accuracy, and operational standardization.

Description

Technical Field

[0001] This application belongs to the technical field of detection methods, and particularly relates to a detection method and detection device for the detection of bimetallic thermosensitive properties. Background Technology

[0002] In the field of specific bending test of metal samples, accurately obtaining the deformation amount of the sample at different temperatures and calculating the specific bending value is the key to evaluating the hot deformation performance of the sample metal, and it is widely used in various material performance testing scenarios.

[0003] Current detection technologies suffer from numerous shortcomings, failing to meet the demands for efficient and accurate testing: First, they often employ a single oil tank structure, requiring repeated heating and cooling, resulting in low detection efficiency. Rapid heating also easily generates oil temperature gradients, leading to insufficient thermal equilibrium in the sample, affecting data reliability, and lacking reversibility; verifying room-temperature data requires waiting for the oil to cool down. Second, they lack an air-based calibration procedure, making it impossible to establish an absolute displacement coordinate system. Determining the initial bending direction of the sample relies on subjective human experience, easily leading to detection bias. These shortcomings have become key constraints on improving detection accuracy and efficiency, urgently requiring an improved detection method and device. Summary of the Invention

[0004] This application aims to at least partially solve the technical problem of repeated heating in a single oil tank. To this end, this application provides a method and apparatus for detecting the thermistor properties of bimetallic materials.

[0005] In a first aspect, the embodiments of this application provide a detection method, which includes: The torsion tester measures the height M0 of the standard plate. Replace the standard plate with the sample metal; The temperature of the first oil tank is controlled to T1, and the torsion tester with the sample metal fixed is inserted into the oil tank in the first oil tank. The torsion tester measures the height M1 of the metal sample. The temperature of the second oil tank is controlled at T2, and the torsion measuring instrument is inserted into the oil sump of the second oil tank, where T2>T1; The torsion tester measures the height M2 of the metal sample. The specific bending of the sample metal is automatically calculated based on heights M0, M1, and M2.

[0006] Optionally, the step of controlling the temperature of the first oil tank to T1 includes: The thermostat controls the operation of the first heating element and the first agitator in the first oil tank; The first oil temperature sensor in the first oil tank transmits a temperature signal to the temperature controller in real time to control the temperature of the first oil tank to T1.

[0007] Optionally, after the step of the first oil temperature sensor transmitting a temperature signal to the temperature controller in real time, the following steps are included: The thermostat controls the operation of the cooling system to counteract the heat radiation from the second oil tank.

[0008] Optionally, the step of controlling the temperature of the second oil tank to T2 includes: The thermostat controls the second heating rod and the second stirrer in the second oil tank; The second oil temperature sensor in the second oil tank transmits a temperature signal to the temperature controller in real time to control the temperature of the second oil tank to T2.

[0009] Optionally, after replacing the standard plate with the sample metal, the process includes: activating the smoke extraction system to remove smoke from the first and second oil tanks.

[0010] Secondly, embodiments of this application provide a detection device, a detection device used in any of the above-mentioned detection methods, the detection device comprising: Oil storage tanks include a first oil tank and a second oil tank; Temperature control components are respectively installed in the first oil tank and the second oil tank. The temperature control components are used to control the temperature of the first oil tank to T1 and to control the temperature of the second oil tank to T2. The deflection meter includes a frame and a fixture fixed to the frame, a displacement measuring mechanism, and a temperature measuring mechanism. The fixture is used to fix a standard plate or metal sample, the displacement measuring mechanism is used to measure the height, and the detection end of the temperature measuring mechanism and the clamping end of the fixture are at the same height.

[0011] Optionally, the displacement measuring mechanism includes an actuator, a telescopic rod, and a pressure sensor. The actuator is connected to the frame, the telescopic rod is connected to the output end of the actuator, and the pressure sensor is connected to the end of the telescopic rod.

[0012] Optionally, the temperature control assembly includes a temperature controller and a first heating rod, a first stirrer, a second heating rod, and a second stirrer, which are electrically connected to the temperature controller respectively. The first heating rod and the first stirrer are disposed in the first oil tank, and the second heating rod and the second stirrer are disposed in the second oil tank. The temperature control assembly also includes a first oil temperature sensor and a second oil temperature sensor, which are electrically connected to the temperature controller respectively. The first oil temperature sensor is located in the first oil tank, and the second oil temperature sensor is located in the second oil tank.

[0013] Optionally, the temperature control assembly also includes a cooling system and a heat insulation layer. The cooling system is disposed in the first oil tank and electrically connected to the temperature controller. The cooling system is used to release cold energy into the first oil tank. The heat insulation layer is disposed on the surface of the first oil tank and the surface of the second oil tank.

[0014] Optionally, the detection device includes a smoke extraction system disposed at the opening of the first oil tank and the opening of the second oil tank, the smoke extraction system being used to extract smoke from the first oil tank and the second oil tank.

[0015] The beneficial effects of this application are: This technical solution addresses the problems of low detection efficiency and poor temperature field stability in existing single-tank structures. It employs a dual-tank independent oil tank design. The first tank provides a temperature environment of T1, while the second tank provides a temperature environment of T2 (T2>T1). Both tanks can simultaneously preheat and stabilize the temperature field, eliminating the need for repeated heating and cooling as with a single tank, significantly shortening the detection cycle. Furthermore, independent temperature control in each tank maintains a uniform oil temperature field for extended periods, avoiding temperature gradients caused by rapid heating. This ensures that the sample metal reaches thermal equilibrium at different temperatures, significantly improving the reliability of the detection data.

[0016] In addition, the dual-oil-tank structure is reversible. If the room temperature data M1 needs to be verified, the torsion tester can be directly reinserted into the first oil tank without waiting for the oil to cool down, which further improves the detection efficiency and meets the requirements of high-efficiency operation.

[0017] To address the shortcomings of existing technologies, such as the lack of M0 air reference calibration and the inability to determine deflection polarity, this solution explicitly adds the detection of the standard plate height M0 in step 1. Using M0 as the air reference zero point, an absolute displacement coordinate system is established. Through algebraic comparison of M0 and M1, the initial bending direction of the sample metal can be scientifically determined without relying on subjective human experience to judge the sign of M1. This conforms to a standardized data processing flow and avoids deviations in test results caused by incorrect deflection polarity determination. To address the issue of existing technologies relying on manual data recording and calculation, which is prone to human error, this solution achieves automatic recording of M0, M1, M2, and the temperature data of each oil tank through the linkage of the deflection meter and the data acquisition system. Simultaneously, it automatically completes the specific bending calculation through preset calculation formulas, completely avoiding problems such as errors in manual recording, unit conversion, and formula usage. This significantly improves the reliability and efficiency of test results and reduces manual operation costs. In summary, the detection method of this embodiment effectively solves the shortcomings of existing technologies by optimizing the detection process, adding reference calibration, and automating data processing, while balancing detection efficiency, data accuracy, and operational standardization. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic flowchart of a detection method according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a detection device according to an embodiment of the present application; Figure 3 This is a schematic diagram of the structure of a torsion measuring instrument according to an embodiment of this application; Figure 4 This is a schematic flowchart of a detection method according to another embodiment of this application; Figure 5 This is a schematic flowchart of a detection method according to another embodiment of this application.

[0020] 21 First oil tank; 22 Second oil tank; 18 Fixture; 10 Frame; 7 Actuator; 8 Telescopic rod; 6 Pressure sensor; 19 Temperature detection mechanism; 4 First heating rod; 15 First stirrer; 14 Second heating rod; 1 Second stirrer; 16 First oil temperature sensor; 3 Second oil temperature sensor; 2 Cooling system; 5 Heat insulation layer; 17 Smoke exhaust system. Detailed Implementation

[0021] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described application is only a part of this application, not all of it. Based on the applications in this application, all other applications obtained by a person skilled in the art without inventive effort are within the scope of protection of this application.

[0022] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more applications. Numerous specific details are provided in the following description to give a full understanding of the application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0023] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or micro-temperature controller devices.

[0024] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0025] It should also be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of these terms can be interchanged where appropriate so that the application described herein can be implemented in a sequence other than those illustrated or described.

[0026] Please see Figures 1 to 3 , Figure 1 This is a schematic flowchart of a detection method according to an embodiment of the present application. Figure 2 This is a schematic diagram of the structure of a detection device according to an embodiment of the present application. Figure 3 This is a schematic diagram of the structure of a torsion measuring instrument according to an embodiment of this application.

[0027] This application provides a detection method, which specifically includes the following steps: S101: The height M0 of the standard plate is measured by the torsion tester.

[0028] S102: Replace the standard plate with the sample metal.

[0029] S103: Control the temperature of the first oil tank 21 to T1, and insert the measuring instrument with the sample metal fixed into the oil tank in the first oil tank 21.

[0030] S104: The height M1 of the metal sample is detected by the torsion tester.

[0031] S105: Control the temperature of the second oil tank 22 to T2, and insert the torsion measuring instrument into the oil trough in the second oil tank 22, where T2>T1.

[0032] S106: The torsion tester detects the height M2 of the metal sample.

[0033] S107: Automatically calculates the specific bending of the sample metal based on heights M0, M1, and M2.

[0034] Step 1: Start the deflection meter and perform preheating calibration to ensure that the detection accuracy of the deflection meter meets the standard requirements. Then, fix the standard plate on the clamping mechanism of the deflection meter, control the deflection meter to be in a stable no-load state, detect and record the height M0 of the standard plate in the air. M0 serves as the air reference displacement for the entire detection process, providing a zero-point reference for subsequent deflection polarity determination.

[0035] Step 2: While keeping other parameters of the torsion tester unchanged, remove the standard plate from the clamping mechanism and replace it with the sample metal to be tested. Ensure that the sample metal is firmly clamped and subjected to uniform force to avoid affecting the test data due to clamping deviation.

[0036] Step 3: Start the temperature control component of the first oil tank 21 in advance to stabilize the oil temperature in the oil tank 21 at the preset temperature T1 (in this embodiment, T1 can be set to room temperature 25℃, which meets the room temperature reference requirements of conventional testing). After the oil temperature reaches T1 and the temperature field is stable, slowly insert the clamping end of the torsion tester with the sample metal fixed into the oil tank of the first oil tank 21 to ensure that the sample metal is completely immersed in the oil and does not contact the oil tank wall. Let it stand for a preset time (such as 5 minutes) to allow the sample metal and the oil to reach thermal equilibrium.

[0037] Step 4: Start the deflection meter to detect the height M1 of the metal sample at temperature T1, and record the displacement data at this temperature. The difference between M1 and M0 is the amount of deformation of the sample at temperature T1.

[0038] Step 5: Activate the temperature control component of the second oil tank 22 to stabilize the oil temperature in the oil tank 22 at a preset temperature T2, where T2 is greater than T1 (in this embodiment, T2 can be set to 100℃ to meet the requirements of high and low temperature comparison detection). After the oil temperature field in the second oil tank 22 stabilizes, remove the torsion tester from the first oil tank 21, quickly wipe the oil at the clamping end dry, and then insert it into the oil tank of the second oil tank 22. Similarly, ensure that the sample metal is completely immersed and there is no contact interference. Let it stand until the sample metal and the oil at temperature T2 reach thermal equilibrium.

[0039] Step 6: Detect the height M2 of the metal sample at temperature T2 using a deflectometer, and record the displacement data at this high temperature. The difference between M2 and M0 is the amount of deformation of the sample at temperature T2.

[0040] Step 7: Based on the preset specific bending calculation formula, substitute the recorded heights M0, M1, and M2 into the formula to automatically calculate the specific bending value of the sample metal, completing the entire testing process. The test data for each step is automatically recorded by the data acquisition system built into the torsion meter, requiring no manual intervention and ensuring the accuracy of the data recording. The specific bending calculation formula is:

[0041] In the formula: K—specific bending, in units of degrees Celsius (°C-1); h — Sample thickness, in millimeters (mm); T1 — Low-temperature oil temperature, in degrees Celsius (°C); T2 — High-temperature oil temperature, in degrees Celsius (°C); L — Test length of the sample, in millimeters (mm); M0 — The height of the reference point at room temperature, in millimeters (mm); M1 — Micrometer reading at temperature T1, in millimeters (mm). M2 — Micrometer reading at temperature T2, in millimeters (mm); The sample thickness h and sample test length L are measured and input into the computer program in advance.

[0042] To address the issues of low detection efficiency and poor temperature field stability in existing single-tank structures, this solution adopts a dual-tank independent oil tank design. The first oil tank 21 provides a temperature environment of T1, while the second oil tank 22 provides a temperature environment of T2 (T2>T1). The two oil tanks can simultaneously perform temperature preheating and temperature field stabilization, eliminating the need for repeated heating and cooling as with a single oil tank, thus significantly shortening the detection cycle. At the same time, each oil tank has independent temperature control, which can maintain a uniform oil temperature field for a long time, avoiding oil temperature gradients caused by rapid heating. This ensures that the sample metal can reach thermal equilibrium at different temperatures, significantly improving the reliability of the detection data.

[0043] In addition, the dual oil tank structure is reversible. If it is necessary to verify the room temperature data M1, the torsion tester can be directly reinserted into the first oil tank 21 without waiting for the oil to cool down, which further improves the detection efficiency and meets the requirements of high-efficiency operation.

[0044] To address the shortcomings of existing technologies, such as the lack of M0 air reference calibration and the inability to determine deflection polarity, this solution explicitly adds the detection of the standard plate height M0 in step 1. Using M0 as the air reference zero point, an absolute displacement coordinate system is established. Through algebraic comparison of M0 and M1, the initial bending direction of the sample metal can be scientifically determined without relying on subjective human experience to judge the sign of M1. This conforms to a standardized data processing flow and avoids deviations in test results caused by incorrect deflection polarity determination. To address the issue of existing technologies relying on manual data recording and calculation, which is prone to human error, this solution achieves automatic recording of M0, M1, M2, and the temperature data of each oil tank through the linkage of the deflection meter and the data acquisition system. Simultaneously, it automatically completes the specific bending calculation through preset calculation formulas, completely avoiding problems such as errors in manual recording, unit conversion, and formula usage. This significantly improves the reliability and efficiency of test results and reduces manual operation costs. In summary, the detection method of this embodiment effectively solves the shortcomings of existing technologies by optimizing the detection process, adding reference calibration, and automating data processing, while balancing detection efficiency, data accuracy, and operational standardization.

[0045] Please see Figures 2 to 4 , Figure 4 This is a schematic flowchart of a detection method according to another embodiment of this application.

[0046] The steps for controlling the temperature of the first oil tank 21 to T1 include: S201: The thermostat controls the operation of the first heating rod 4 and the first stirrer 15 in the first oil tank 21; S202: The first oil temperature sensor 16 in the first oil tank 21 transmits a temperature signal to the temperature controller in real time to control the temperature of the first oil tank 21 to T1; S203: The thermostat controls the operation of the cooling system 2 to counteract the heat radiation from the second oil tank 22.

[0047] The temperature zone environment system used in this embodiment includes two independent oil tanks: a normal temperature oil tank (corresponding to the first oil tank 21 in the technical solution) and a high temperature oil tank (corresponding to the second oil tank 22 in the technical solution). Both oil tanks are equipped with heating rods (the first heating rod 4 corresponds to the first oil tank 21) and stirring devices (the first stirrer 15 corresponds to the first oil tank 21). The heating rods are used to raise the oil temperature, and the stirring devices are used to enhance oil flow, thereby reducing oil temperature stratification and ensuring a uniform temperature field within the oil tanks. Simultaneously, both oil tanks form a closed-loop control system with a temperature controller via an oil temperature sensor (the first oil temperature sensor 16 corresponds to the first oil tank 21), achieving precise oil temperature control. In addition to basic temperature control functions, the normal temperature oil tank is also connected to an active cooling system 2 based on a refrigeration compressor to counteract the heat radiation generated by the high temperature oil tank, ensuring the stability of the initial temperature T1 measurement.

[0048] The specific temperature control process is as follows: Execute S201 to start the temperature controller. The temperature controller issues a control command to control the first heating rod 4 and the first agitator 15 in the first oil tank 21 (normal temperature oil tank) to run synchronously. The first heating rod 4 starts to heat the oil, and the first agitator 15 rotates synchronously to force the oil to flow and avoid the oil from temperature stratification.

[0049] S202, the first oil temperature sensor 16 in the first oil tank 21 collects the oil temperature signal in real time and continuously transmits the collected temperature signal to the temperature controller. The temperature controller compares and analyzes the real-time temperature with the set temperature T1. If the current oil temperature is detected to be lower than T1, the first heating rod 4 is continuously controlled to keep running, and the stirrer continues to work until the oil temperature reaches T1. If the oil temperature is detected to be higher than T1, the first heating rod 4 is controlled to stop running. If the temperature deviation is large, the active cooling system 2 can be linked to assist in cooling. Through closed-loop control, the temperature of the first oil tank 21 is stably controlled at T1.

[0050] S203, throughout the entire testing process, especially when the high-temperature oil tank is running and heating up, the temperature controller monitors the temperature change of the room temperature oil tank in real time. When it is detected that the heat radiation generated by the high-temperature oil tank causes the temperature of the room temperature oil tank to exceed the set range, the active cooling system 2 is automatically controlled to run. The cooling compressor is used to circulate and cool down the tank. With the help of bidirectional dynamic adjustment of "heating-cooling", the temperature effect caused by heat radiation is offset, ensuring the absolute stability of the room temperature oil tank temperature T1.

[0051] In addition, when the temperature controller detects that the current temperature of the oil in any oil tank is lower than the set value, the system will automatically activate the high-power heating rod in the corresponding oil tank for rapid heating. At the same time, in conjunction with the motor-driven spiral stirring device, the oil temperature stratification is further forcibly eliminated, ensuring the uniformity of the thermal field in the oil tank and providing a stable temperature environment for the subsequent detection of the metal height of the sample.

[0052] To address the issues of insufficient temperature uniformity and significant temperature stratification in existing oil tank technologies, this solution involves installing heating rods and stirring devices in two independent oil tanks. When the heating rods heat up, the stirring devices operate simultaneously, forcibly driving the oil flow. This effectively eliminates temperature stratification caused by localized heating and ensures the uniformity of the temperature field throughout the oil tank.

[0053] To address the technical issues in existing technologies where ambient temperature oil baths are susceptible to thermal radiation from high-temperature oil baths and exhibit unstable initial temperatures (T1), this solution incorporates an active cooling system 2 based on a refrigeration compressor on the ambient temperature oil bath. Through closed-loop linkage between the temperature controller and the oil temperature sensor, the system monitors temperature changes in the ambient temperature oil bath in real time. When thermal radiation from the high-temperature oil bath is detected, causing the ambient temperature oil bath temperature to exceed the set range, the active cooling system 2 automatically activates. By circulating cooling, it counteracts the effects of thermal radiation, achieving bidirectional dynamic adjustment of "heating-cooling." This completely solves the problem of T1 temperature fluctuations caused by thermal radiation interference, ensuring the absolute stability of the initial temperature T1 and providing a foundation for the accuracy of subsequent test data.

[0054] To address the issues of low accuracy and slow response in existing oil temperature control technologies, this solution utilizes a closed-loop control system comprised of an oil temperature sensor and a temperature controller. This system enables real-time acquisition and feedback of oil temperature signals. The temperature controller can quickly adjust the operating status of the heating element and cooling system 2 based on the feedback signal. When the oil temperature falls below the set value, the high-power heating element is automatically activated for rapid heating. This rapid response and precise control effectively improve the efficiency and accuracy of oil temperature control, avoiding detection errors caused by untimely or inaccurate oil temperature control.

[0055] Please see Figure 2 , Figure 3 , Figure 5 , Figure 5 This is a schematic flowchart of a detection method according to another embodiment of this application.

[0056] The steps for controlling the temperature of the second oil tank 22 to T2 include: S301: The thermostat controls the second heating rod 14 and the second stirrer 1 in the second oil tank 22; S302: The second oil temperature sensor 3 in the second oil tank 22 transmits a temperature signal to the temperature controller in real time to control the temperature of the second oil tank 22 to T2.

[0057] The temperature zone environment system used in this embodiment includes an independent ambient temperature oil tank (corresponding to the first oil tank 21) and a high temperature oil tank (corresponding to the second oil tank 22). Both oil tanks are equipped with heating rods, stirring devices, and oil temperature sensors. They are all connected to a temperature controller to form a closed-loop control system. The second oil tank 22 is equipped with a second heating rod 14, a second stirring device 1, and a second oil temperature sensor 3 to achieve precise control of temperature T2. It works in conjunction with the temperature control system of the first oil tank 21 to provide different temperature environments for metal detection of samples.

[0058] Specifically, the steps for controlling the temperature of the second oil tank 22 to T2 are as follows: The temperature controller issues a control command to control the second heating rod 14 and the second stirrer 1 in the second oil tank 22 to start running synchronously. After the second heating rod 14 is powered on, it begins to heat up the oil in the second oil tank 22. At the same time, the second stirrer 1 continues to rotate to enhance the flow of oil, effectively reduce the phenomenon of oil temperature stratification, avoid local oil temperature being too high or too low, and ensure the uniformity of the temperature field.

[0059] Meanwhile, the second oil temperature sensor 3 in the second oil tank 22 collects the current temperature signal of the oil in real time and continuously and stably transmits the collected temperature signal to the temperature controller. After receiving the temperature signal, the temperature controller compares and analyzes the current oil temperature with the set temperature T2 in real time to form a closed-loop control: if the current oil temperature is detected to be lower than the set temperature T2, the temperature controller controls the second heating rod 14 to keep running, and the second stirrer 1 to work synchronously until the oil temperature rises to T2. If the current oil temperature is detected to be higher than the set temperature T2, the temperature controller controls the second heating rod 14 to stop running, and the second stirrer 1 can continue to run for a period of time according to the actual temperature deviation to promote the uniform drop of oil temperature, and finally stabilize the temperature of the second oil tank 22 at the set value T2, providing stable and uniform temperature conditions for the high-temperature detection of sample metals. At the same time, it cooperates with the temperature control process of the first oil tank 21 to complete the temperature environment construction of the entire detection process.

[0060] This solution simultaneously installs a second heating rod 14 and a second stirrer 1 in the second oil tank 22, and the two start up and run synchronously. The second heating rod 14 is responsible for heating the oil, and the second stirrer 1 is responsible for enhancing the flow of the oil. This can forcibly eliminate the temperature stratification of the oil caused by local heating, ensure that the oil temperature in the second oil tank 22 is uniform, and enable the sample metal to fully reach thermal equilibrium with the oil. This avoids detection errors caused by local temperature differences and improves the reliability of detection data under high temperature conditions.

[0061] In this embodiment's testing process, after the standard plate and sample metal are replaced, the system automatically triggers the start of the fume extraction system 17. This fume extraction system 17 works in conjunction with the first oil tank 21 and the second oil tank 22, with its intake ports positioned above the two oil tanks to ensure complete coverage of the tank openings and real-time extraction of fumes generated during the testing process. Specifically, since the second oil tank 22 needs to be heated to T2 (high temperature) during the testing process, while the first oil tank 21, although at room temperature, may still generate a small amount of oil mist due to environmental factors, especially at high temperatures where the silicone oil in the tank will evaporate and generate oil mist. If these fumes accumulate over a long period, they will not only affect the operating environment but also damage the precision components of the equipment. Therefore, after the standard plate is replaced with the sample metal and the sample is clamped and fixed, the fume extraction system 17 immediately starts operating. Through the principle of negative pressure suction, it continuously extracts the fumes generated in the first oil tank 21 and the second oil tank 22, including the oil mist formed by the evaporation of high-temperature silicone oil. The extracted fumes are purified by the fume extraction system 17 and then discharged, ensuring that no fumes accumulate in the testing environment and achieving active control of oil fumes. The smoke extraction system 17 is linked to the testing process and does not require manual activation. It is automatically triggered after the sample is replaced and runs continuously until the entire testing process is completed and then shuts off after a preset delay. This ensures that the smoke is completely and thoroughly removed, guaranteeing a safe operating environment and protecting the delicate components of the equipment from damage.

[0062] Please continue reading. Figure 2 and Figure 3 Example of a sample metal ratio bending detection method The detection device used in this embodiment comprises three core components: an oil storage tank, a temperature control component, and a torsion meter. The oil storage tank consists of two independent tanks, a first oil tank 21 and a second oil tank 22, which provide two temperature environments, T1 and T2 (T2>T1), respectively, laying the foundation for high- and low-temperature comparative detection of the sample metal. The temperature control component is correspondingly located inside the first oil tank 21 and the second oil tank 22. Its core function is to precisely control the temperature of the two tanks, ensuring that the first oil tank 21 remains stable at the set temperature T1 and the second oil tank 22 remains stable at the set temperature T2, meeting the temperature requirements during the detection process.

[0063] The torsion measuring instrument, as the core testing component, includes a frame 10 and a fixing bracket 18, a displacement measuring mechanism, and a temperature measuring mechanism 19 fixed on the frame 10. The fixing bracket 18 is used to detachably fix a standard plate or sample metal. During testing, the fixing standard plate or sample metal can be switched according to process requirements to ensure firm clamping and uniform force distribution. The displacement measuring mechanism is used to measure the height (i.e., M0, M1, M2) of the standard plate or sample metal under different temperature environments, providing basic data for specific bending calculation. The key design feature of the temperature measuring mechanism 19 is that its detection end and the clamping end of the fixing bracket 18 are set at the same height, ensuring that they are in equivalent thermal field positions. Furthermore, the temperature measuring mechanism 19 moves synchronously with the entire torsion measuring instrument between the first oil tank 21 (normal temperature bath) and the second oil tank 22 (high temperature bath), and is in the same thermal field environment as the sample metal throughout the process.

[0064] In the specific implementation process, the standard plate is first fixed on the fixing frame 18, and the height M0 of the standard plate is detected by the displacement measuring mechanism. Then, the standard plate is replaced with the sample metal. After that, the temperature of the first and second oil tanks 22 is controlled to T1 and T2 respectively by the temperature control component. During the control process, the temperature control component and the temperature detection component in the oil tank are linked to achieve closed-loop control. Then, the deflection measuring instrument is inserted into the two oil tanks in sequence. Since the temperature detection mechanism 19 and the clamping end of the fixing frame 18 are at the same height, the real temperature of the sample metal can be detected in real time. The displacement measuring mechanism simultaneously detects the heights M1 and M2 of the sample metal at temperatures T1 and T2. Finally, the specific deflection of the sample metal is calculated by combining M0, M1, M2 and the corresponding real temperatures T1 and T2.

[0065] To address the core technical problem of existing solutions that commonly use single-point average temperature in the oil bath and neglect temperature field gradient and sample thermal inertia, resulting in a large deviation between the calculated temperature and the actual service temperature of the sample and insufficient scientific validity of the specific bending coefficient K, this invention sets the detection end of the temperature detection mechanism 19 of the torsion measuring instrument and the clamping end of the fixing frame 18 at the same height, placing them in an equivalent thermal field position. This avoids the defect that single-point average temperature cannot reflect the actual temperature of the sample. At the same time, the temperature detection mechanism 19 moves synchronously with the torsion measuring instrument between the two oil tanks, maintaining the same thermal field environment with the sample metal throughout the process. It can collect the actual service temperature of the sample metal in real time, ensuring that T1 and T2 used in the specific bending formula calculation are the actual temperatures of the sample, rather than the average temperature of the oil bath. This eliminates the errors caused by temperature field gradient and sample thermal inertia from the source, significantly improving the scientific validity and accuracy of the specific bending coefficient K calculation.

[0066] To address the issue of insufficient coordination among the components of the testing device, this solution clarifies the specific structure and linkage logic of the oil storage tank, temperature control component, and torsion meter. The first and second oil tanks 22 are set independently to avoid temperature interference. The temperature control component provides a stable environment for testing by accurately controlling the temperature. The integrated design of the torsion meter components ensures convenient operation. The fixing frame 18 can flexibly switch between the standard plate and the sample metal. The displacement measurement mechanism and the temperature detection mechanism 19 work together to achieve synchronous and accurate acquisition of height and temperature data, thereby improving the standardization and efficiency of the testing process.

[0067] The core technology of this embodiment lies in the structural design of the torsion measuring instrument. The displacement measuring mechanism adopts non-electrically triggered oxide layer compatible detection technology. Its specific structure includes a driver 7, a telescopic rod 8, and a pressure sensor 6. The driver 7 is fixedly connected to the frame 10 of the torsion measuring instrument, the telescopic rod 8 is drivenly connected to the output end of the driver 7, and the pressure sensor 6 is fixed at the end of the telescopic rod 8. The core is to replace the traditional electrical conduction mechanism with a pressure sensing triggering mechanism to achieve height detection.

[0068] In the specific implementation process, the standard plate is first fixed to the clamping end of the fixing frame 18. The displacement measuring mechanism is then activated, and the driver 7 drives the telescopic rod 8 to slowly extend until the pressure sensor 6 at the end of the telescopic rod 8 makes physical contact with the surface of the standard plate. After the pressure sensor 6 senses the contact pressure of the preset threshold, it immediately triggers the system to lock the data. The displacement measuring mechanism simultaneously records the height M0 of the standard plate at this time. This process does not rely on electrical conduction, and even if there is a slight oxide layer on the surface of the standard plate, it will not affect the detection. Subsequently, the standard plate is replaced with the sample metal, ensuring that the sample metal is firmly clamped by the fixing frame 18. At this time, the detection end of the temperature detection mechanism 19 is at the same height as the clamping position of the sample metal, ensuring the accuracy of temperature detection. The torsion measuring instrument is then moved sequentially to the first oil tank 21 and the second oil tank 22 at preset temperatures. The temperature detection mechanism 19 collects the real temperature (i.e., T1 and T2) of the sample metal in real time. Simultaneously, the displacement measuring mechanism is activated, and the pressure sensing triggering process described above is repeated to lock the height M1 and M2 of the sample metal at temperatures T1 and T2, respectively. Finally, by combining M0, M1, M2 and the corresponding real temperatures T1 and T2, the specific bending of the sample metal is calculated, which fully embodies the core design of the new technology solution.

[0069] To address the technical problems of traditional displacement detection methods that rely excessively on the cleanliness of bimetallic surfaces and use electrical circuit triggering, the displacement measurement mechanism in this embodiment employs a non-electrically triggered oxide layer compatible detection technology. It replaces the traditional electrical conduction mechanism with a pressure-sensing triggering mechanism. Regardless of whether there is an oxide layer or insulating oil film generated during heat treatment on the sample (standard plate, sample metal) surface, as long as the pressure sensor 6 makes physical contact with the sample surface, the system can sensitively identify and lock the height data. This achieves non-destructive testing of the sample, avoids damage to the sample surface caused by electrical triggering, and significantly shortens the sample preparation process by eliminating the need for repeated grinding to remove the oxide layer. This effectively solves the problems of cumbersome and inefficient sample preparation in traditional technologies, while also improving the compatibility and applicability of the detection.

[0070] The temperature control component in this embodiment is the core component for achieving precise temperature regulation in the detection device. Its specific structure includes a temperature controller, and a first heating rod 4, a first stirrer 15, a second heating rod 14, a second stirrer 1, a first oil temperature sensor 16, and a second oil temperature sensor 3, all electrically connected to the temperature controller. The installation layout of each component is adapted to the structure of the oil storage tank. The first heating rod 4 and the first stirrer 15 are respectively disposed inside the first oil tank 21 to achieve temperature rise and temperature field uniformity of the oil in the first oil tank 21. The second heating rod 14 and the second stirrer 1 are respectively disposed inside the second oil tank 22 to achieve temperature rise and temperature field uniformity of the oil in the second oil tank 22. The first oil temperature sensor 16 is disposed in the first oil tank 21 to collect the temperature signal of the oil in the first oil tank 21 in real time. The second oil temperature sensor 3 is disposed in the second oil tank 22 to collect the temperature signal of the oil in the second oil tank 22 in real time. Both oil temperature sensors are electrically connected to the temperature controller, forming a closed-loop temperature control system.

[0071] In the specific implementation process, after replacing the standard plate with the sample metal, the temperature control component is started: the temperature controller sends a start command to the first heating rod 4 and the first stirrer 15 according to the preset temperature value T1. After the first heating rod 4 is powered on, it heats the oil in the first oil tank 21. The first stirrer 15 operates synchronously to enhance the flow of oil to eliminate temperature stratification and ensure a uniform temperature field in the first oil tank 21. At the same time, the first oil temperature sensor 16 collects the oil temperature signal in the first oil tank 21 in real time and continuously transmits the signal to the temperature controller. The temperature controller compares and analyzes the real-time temperature with the preset temperature T1. If the real-time temperature is lower than T1, it controls the first heating rod 4 to continue running. If the real-time temperature reaches T1, it controls the first heating rod 4 to stop running. Through closed-loop control, the temperature of the first oil tank 21 is stabilized at T1.

[0072] Similarly, the temperature controller starts the second heating rod 14 and the second stirrer 1 according to the preset temperature value T2 (T2>T1). The second heating rod 14 heats the oil in the second oil tank 22, and the second stirrer 1 operates synchronously to eliminate temperature stratification. The second oil temperature sensor 3 collects the oil temperature signal in the second oil tank 22 in real time and transmits it to the temperature controller. The temperature controller stabilizes the temperature of the second oil tank 22 at T2 through closed-loop control. After the temperatures of the two oil tanks are stable, the deflection measuring instrument is moved to the first and second oil tanks 22 in sequence. Combined with the displacement measuring mechanism and the temperature detection mechanism 19, the height and temperature data are collected, and finally the metal bending ratio of the sample is calculated. The entire process demonstrates the core design of the temperature control component technology and its synergistic effect with other components.

[0073] To address the technical problems of insufficient temperature field uniformity and low temperature control precision in traditional temperature control schemes, which lead to inconsistent thermal equilibrium of sample metals and unreliable detection data, the temperature control component in this embodiment effectively solves the above-mentioned defects through reasonable structural design and closed-loop control logic. In the temperature control component, the first heating rod 4 and the first stirrer 15, and the second heating rod 14 and the second stirrer 1 are respectively arranged in two oil tanks and are electrically connected to the temperature controller. When heating is started, the stirrer and the heating rod run synchronously, which can force the oil to flow, effectively eliminate the temperature stratification of the oil caused by local heating, ensure that the temperature field in each of the two oil tanks is uniform, and enable the sample metal to fully reach thermal equilibrium with the oil under different temperature environments, avoiding detection errors caused by uneven temperature field. To address the technical problems of inaccurate temperature monitoring and inability to achieve dynamic control in traditional temperature control solutions, which leads to easy fluctuations in oil tank temperature, the temperature control component in this embodiment is equipped with a first oil temperature sensor 16 and a second oil temperature sensor 3, which respectively monitor the oil temperature of the two oil tanks. Both sensors form a closed-loop system with the temperature controller. The oil temperature sensors can collect temperature signals in real time and transmit them to the temperature controller. The temperature controller can quickly compare the real-time temperature with the preset temperature (T1, T2) and adjust the operating status of the corresponding heating rod in a timely manner to achieve dynamic and precise temperature control. This ensures that the first oil tank 21 is stable at T1 and the second oil tank 22 is stable at T2, avoiding excessively high or low temperature fluctuations and providing a stable and reliable temperature environment for the metal ratio bending test of the sample.

[0074] In this technical solution, the newly added core components of the temperature control assembly are the cooling system 2 and the insulation layer 5. These two components work in conjunction with the existing components of the temperature control assembly to achieve stable temperature control of the first oil tank 21 and independent stabilization of the temperature fields of the two oil tanks. Specifically, the cooling system 2 is exclusively located inside the first oil tank 21, electrically connected to the temperature controller, and precisely controlled by the temperature controller. Its core function is to release cooling energy into the first oil tank 21, achieving active cooling of the oil, and forming bidirectional temperature control in conjunction with the existing heating components. The insulation layer 5 is a double-layer design, completely covering the surfaces of the first oil tank 21 and the second oil tank 22 respectively. It is made of thermal insulation material and is used to block heat transfer, reducing heat exchange between the inside and outside of the oil tanks and between the two oil tanks.

[0075] In the specific implementation process, after the temperature control component is started, the temperature controller obtains the oil temperature signal in the first oil tank 21 in real time through the first oil temperature sensor 16. When the temperature of the first oil tank 21 is lower than the preset value T1, the temperature controller controls the original first heating rod 4 to start heating, and works with the first stirrer 15 to ensure that the oil temperature is uniform. When the temperature of the first oil tank 21 is higher than T1 due to the influence of the external environment or the high temperature heat radiation of the second oil tank 22, the temperature controller immediately sends a start command to the cooling system 2. The cooling system 2 starts and releases cold energy into the first oil tank 21. At the same time, the first stirrer 15 continues to operate, so that the cold energy is evenly diffused and the oil temperature is quickly reduced to T1, realizing the bidirectional closed-loop control of "heating-cooling". At the same time, the heat insulation layer 5 on the surface of the first oil tank 21 and the second oil tank 22 works simultaneously to effectively block heat from the outside environment from entering the oil tank, and at the same time block the high-temperature heat radiation of the second oil tank 22 from being transferred to the first oil tank 21, reducing the temperature fluctuation of the first oil tank 21, and also preventing the rapid loss of heat in the second oil tank 22, ensuring that the two oil tanks maintain a stable temperature field environment until the first oil tank 21 is stable at T1 and the second oil tank 22 is stable at T2 (T2>T1), providing a stable temperature basis for subsequent testing.

[0076] In this technical solution, the newly added core component of the detection device is the smoke exhaust system 17. Its installation position is adapted to the structure of the first oil tank 21 and the second oil tank 22, specifically located at the openings of the first oil tank 21 and the second oil tank 22. This allows for complete coverage of the opening areas of both oil tanks, ensuring efficient capture and extraction of smoke generated within the tanks. The core function of the smoke exhaust system 17 is to extract smoke generated in the first oil tank 21 and the second oil tank 22 in real time, especially the oil mist generated by the evaporation of oil (such as silicone oil) during the heating process of the second oil tank 22 to T2, as well as the small amount of smoke that may be generated in the first oil tank 21 during the detection process, preventing smoke from accumulating inside the tanks or spreading into the detection environment.

[0077] In the specific implementation process, after the detection device is started and the standard plate and sample metal are replaced, the smoke exhaust system 17 starts operating simultaneously. Using the principle of negative pressure suction, it extracts smoke from the openings of the first oil tank 21 and the second oil tank 22 in real time, ensuring that smoke does not accumulate near the tank openings or diffuse into the detection environment. During the operation of the temperature control component, whether the first oil tank 21 maintains temperature T1 or the second oil tank 22 rises to T2 and remains stable, the smoke exhaust system 17 continues to operate, extracting smoke generated in both tanks throughout the entire process. It shuts off after a preset delay after the entire detection process is completed, ensuring that all smoke has been effectively extracted.

[0078] In the description of this specification, the references to terms such as "an application," "some applications," "example," "specific example," or "some examples," etc., mean that a specific feature, structure, material, or characteristic described in connection with that application or example is included in at least one application or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same application or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more applications or examples. Moreover, those skilled in the art can combine and integrate the different applications or examples described in this specification.

[0079] Furthermore, the technical solutions of each application can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0080] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for detecting a bimetallic heat sensitive ability, characterized in that, The detection method includes: The torsion tester measures the height M0 of the standard plate. Replace the standard plate with the sample metal; The temperature of the first oil tank is controlled to T1, and the torsion tester with the sample metal fixed is inserted into the oil tank in the first oil tank. The torsion tester measures the height M1 of the metal sample. The temperature of the second oil tank is controlled at T2, and the torsion measuring instrument is inserted into the oil sump of the second oil tank, where T2>T1; The torsion tester measures the height M2 of the metal sample. The specific bending of the sample metal is automatically calculated based on the heights M0, M1, and M2.

2. The detection method according to claim 1, characterized in that, The step of controlling the temperature of the first oil tank to T1 includes: The thermostat controls the operation of the first heating element and the first agitator in the first oil tank; The first oil temperature sensor in the first oil tank transmits a temperature signal to the temperature controller in real time to control the temperature of the first oil tank to T1.

3. The detection method according to claim 2, characterized in that, After the step of the first oil temperature sensor transmitting a temperature signal to the temperature controller in real time, the following steps are included: The thermostat controls the operation of the cooling system to counteract the heat radiation from the second oil tank.

4. The detection method according to claim 1, characterized in that, The step of controlling the temperature of the second oil tank to T2 includes: The thermostat controls the second heating rod and the second stirrer in the second oil tank; The second oil temperature sensor in the second oil tank transmits a temperature signal to the temperature controller in real time to control the temperature of the second oil tank to T2.

5. The detection method according to claim 1, characterized in that, After the step of replacing the standard plate with the sample metal, the following steps are included: starting the smoke extraction system to extract the smoke from the first and second oil tanks.

6. A detection apparatus, wherein the detection apparatus is used in the detection method according to any one of claims 1 to 5, characterized in that, The detection device includes: Oil storage tanks include a first oil tank and a second oil tank; Temperature control components are respectively installed in the first oil tank and the second oil tank. The temperature control components are used to control the temperature of the first oil tank to T1 and to control the temperature of the second oil tank to T2. The torsion measuring instrument includes a frame and a fixture, a displacement measuring mechanism, and a temperature detection mechanism fixed on the frame. The fixture is used to fix a standard plate or a metal sample. The displacement measuring mechanism is used to measure the height. The detection end of the temperature detection mechanism and the clamping end of the fixture are at the same height.

7. The detection device according to claim 6, characterized in that, The displacement measuring mechanism includes a driver, a telescopic rod, and a pressure sensor. The driver is connected to the frame, the telescopic rod is connected to the output end of the driver, and the pressure sensor is connected to the end of the telescopic rod.

8. The detection device according to claim 6, characterized in that, The temperature control assembly includes a temperature controller and a first heating rod, a first stirrer, a second heating rod, and a second stirrer, which are electrically connected to the temperature controller respectively. The first heating rod and the first stirrer are disposed in the first oil tank, and the second heating rod and the second stirrer are disposed in the second oil tank. The temperature control component further includes a first oil temperature sensor and a second oil temperature sensor, which are electrically connected to the temperature controller respectively. The first oil temperature sensor is disposed in the first oil tank, and the second oil temperature sensor is disposed in the second oil tank.

9. The detection device according to claim 8, characterized in that, The temperature control component further includes a cooling system and a heat insulation layer. The cooling system is disposed in the first oil tank and electrically connected to the temperature controller. The cooling system is used to release cold energy into the first oil tank. The heat insulation layer is disposed on the surface of the first oil tank and the surface of the second oil tank.

10. The detection device according to claim 6, characterized in that, The detection device includes a smoke extraction system, which is disposed at the opening of the first oil tank and the opening of the second oil tank. The smoke extraction system is used to extract smoke from the first oil tank and the second oil tank.

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