Heat treatment system, heat treatment method and readable storage medium

Abstract

The invention discloses a heat treatment system, a heat treatment method and a readable storage medium, and belongs to the technical field of heat treatment. The heating device is used for heating the workpiece, a temperature detector and a heating piece are arranged in the heating device, the heating piece is used for heating the workpiece, and the temperature detector is used for temperature detection; the transfer device is used for transferring the workpiece to the quenching device; and the heat treatment controller is used for adjusting the heating mode and controlling the transfer device to act. The heat treatment method comprises the steps that a workpiece is heated at the first heating rate, the actual temperature Ti of the workpiece is detected and compared with the lower limit value Tmin of the restraining temperature interval, a related heating mode is executed, and when Ti is equal to T, the workpiece is taken out and then quenched. The readable storage medium is provided with a computer program for executing the method. The next procedure is performed after the heating temperature reaches the preheating temperature, effective heat treatment temperature control is achieved, the temperature reliability can be improved, and then the workpiece treatment quality is improved.

Description

Technical Field

[0001] The present application belongs to the field of heat treatment technology, and in particular, relates to a heat treatment system, a heat treatment method and a readable storage medium. Background Art

[0002] Heat treatment is a process in which a solid workpiece is heated to a suitable temperature in a certain medium, kept at this temperature for a certain period of time, and then cooled at different rates to control its performance by changing the surface or internal structure of the workpiece material.

[0003] Laboratory heat treatment equipment is one of the important equipment for the development of new materials and new processes. Its performance has a great influence on the characterization of material properties. In the process of developing new materials and new processes, a large number of comparative tests are often required to obtain effective data, which places high demands on heat treatment equipment.

[0004] At present, in terms of the matching of automatic control and heating programs of laboratory heat treatment systems, time rhythm control is mainly used. There are still technical difficulties in the process time rhythm, accurate control of temperature and signal interaction. It often happens that the temperature does not meet the requirements and goes directly to the next process instead of being processed in the effective heating range, which affects the heat treatment effect of the workpiece and damages the quality of the workpiece. Summary of the invention

[0005] The present application aims to at least to some extent solve the technical problem that the workpiece temperature during the process does not meet the requirements. To this end, the present application provides a heat treatment system, a heat treatment method and a readable storage medium to ensure that the heating temperature reaches the preheating temperature before proceeding to the next process, thereby achieving effective heat treatment temperature control, improving temperature reliability, and thereby improving workpiece processing quality.

[0006] In a first aspect, an embodiment of the present application provides a heat treatment system, comprising:

[0007] A quenching device, used for quenching the heated workpiece;

[0008] A heating device is used to heat the workpiece. The heating device is separated from the quenching device. A temperature detector and a heating element are arranged in the heating device. The heating element is used to heat the workpiece. The temperature detector is used to detect the temperature of the workpiece.

[0009] A transfer device, used to transfer the workpiece from the heating device to the quenching device after the detected workpiece temperature reaches the set preheating temperature;

[0010] The heat treatment controller is electrically connected to the temperature detector and is used to receive the workpiece temperature fed back by the temperature detector, adjust the heating mode of the heating element, and control the action of the transfer device.

[0011] In an optional implementation manner, when adjusting the heating mode of the heating element:

[0012] Control the heating element to enter the preheating working section and start timing to heat the workpiece;

[0013] Detect the actual temperature T of the workpiece after reaching the set preheating time t0 i , the actual temperature Ti is compared with the lower limit value T of the set suppression temperature range min Compare; if T i Less than T min , control the heating element to continue heating; if T i Greater than or equal to T min The heating element is controlled by the heat treatment controller, and the heating element enters the heat preservation working section and heats the workpiece within the set suppression temperature range, and continues to detect the actual temperature T of the workpiece. i , in T i When the temperature is greater than or equal to the set preheating temperature T, the heating element is controlled to end heating.

[0014] In an optional embodiment, the inhibition temperature interval is set to [T min , T max ], set the lower limit value T of the suppression temperature range min =T-ΔT, the upper limit of the suppression temperature range T max =T+ΔT, where ΔT is the set suppression value.

[0015] In an optional embodiment, controlling the transfer device to move specifically includes: when T i When the temperature is greater than or equal to the set preheating temperature T, the heat treatment controller controls the transfer device to operate.

[0016] In an optional embodiment, the heating device includes a low-temperature heating device, a medium-temperature heating device and a high-temperature heating device, which are respectively used to heat the workpiece to a preheating temperature T1, a preheating temperature T2 and a preheating temperature T3, wherein the preheating temperature T1 is lower than the preheating temperature T2, and the preheating temperature T2 is lower than the preheating temperature T3, and the low-temperature heating device, the medium-temperature heating device and the high-temperature heating device are respectively separated from the quenching device.

[0017] In an optional embodiment, an air cooling device is also included, which is placed next to the low-temperature heating device, the medium-temperature heating device or the high-temperature heating device to cool the workpiece.

[0018] In an optional embodiment, a protective atmosphere device is further included for providing protective gas, and the protective atmosphere device is connected to a low-temperature heating device, a medium-temperature heating device, a high-temperature heating device, a quenching device and an air cooling device.

[0019] In an optional embodiment, the quenching device includes a first quenching tank and a second quenching tank, the first quenching tank is located between the low-temperature heating device and the high-temperature heating device, the second quenching tank is located between the medium-temperature heating device and the high-temperature heating device, the low-temperature heating device, the medium-temperature heating device and the high-temperature heating device are arranged in a triangle, and the low-temperature heating device and the high-temperature heating device are respectively located on both sides of the medium-temperature heating device.

[0020] In an optional embodiment, the heating temperature range of the low temperature heating device is [20°C, 650°C], and the temperature uniformity of the low temperature heating device is less than or equal to ±5°C.

[0021] In an optional embodiment, the heating temperature range of the medium temperature heating device is [400°C, 850°C], and the temperature uniformity of the medium temperature heating device is less than or equal to ±6°C.

[0022] In an optional embodiment, the heating temperature range of the high temperature heating device is (850°C, 1400°C], and the temperature uniformity of the high temperature heating device is less than or equal to ±7°C.

[0023] In a second aspect, an embodiment of the present application provides a heat treatment method, which uses the above-mentioned heat treatment system, and the heat treatment method includes:

[0024] The heat treatment controller controls the heating element to heat the workpiece at a first heating rate, and starts timing to detect the actual temperature T of the workpiece after the set preheating time t0 is reached. i , T i The lower limit value T of the set suppression temperature range min Compare; if T i Less than T min , continue to heat the workpiece; if T i Greater than or equal to T min , the heat treatment controller controls the heating element to heat the workpiece at the second heating rate, and continues to detect the actual temperature T of the workpiece. i , when T is greater than T min , the first heating rate is greater than the second heating rate, and the first heating rate and the second heating rate gradually decrease over time;

[0025] When T i When it is equal to T, the heat treatment controller controls the transfer device to transfer the workpiece to the quenching device for quenching.

[0026] In an optional embodiment, heating the workpiece at a second heating rate includes: placing the workpiece in a heat preservation environment, wherein the temperature range of the heat preservation environment is [T min ,T max ], T min =T-ΔT,T max =T+ΔT, where ΔT is the set suppression value.

[0027] In an optional embodiment, quenching the workpiece includes: placing the workpiece in a quenching device for quenching, and compensating heating the quenching medium in the quenching device, wherein the compensating heating temperature is less than or equal to 150°C, so that the temperature rise of the workpiece is less than or equal to 15°C.

[0028] In a third aspect, an embodiment of the present application provides a method for heat treatment of a workpiece, which adopts the above-mentioned heat treatment system, and the heat treatment method includes:

[0029] The workpiece is placed in a low temperature heating device for heating. When the actual temperature of the workpiece is T i When the set preheating temperature T1 is reached, the workpiece is taken out by the transfer device and transferred to the quenching device for quenching;

[0030] The workpiece is transferred to the medium temperature heating device for heating. i When the set preheating temperature T2 is reached, the workpiece is taken out by the transfer device and transferred to the quenching device for quenching;

[0031] The workpiece is transferred into the high temperature heating device for heating. i When the set preheating temperature T3 is reached, the workpiece is taken out by the transfer device and transferred to the quenching device for quenching, or transferred to the air cooling device for annealing.

[0032] In an optional embodiment, the time for removing the workpiece from the low-temperature heating device and the medium-temperature heating device and transferring them to the quenching device is less than or equal to 10 seconds, and the time for removing the workpiece from the high-temperature heating device and transferring it to the quenching device is less than or equal to 16 seconds.

[0033] In a fourth aspect, an embodiment of the present application provides a readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the readable storage medium is located is controlled to execute the above-mentioned heat treatment method.

[0034] It can be seen from the above technical solution that the beneficial effects of this application are:

[0035] 1. The system of the present application no longer uses time or rhythm for production, but is realized through signal transmission between the heating device and the transfer device. Specifically, the temperature of the heating device is detected by a temperature detector, and the obtained temperature is used as a basis for feedback to the heat treatment controller for judgment, so that the heating method is adjusted by the heat treatment controller, so that the heating element can be heated in different ways and the temperature change can be better regulated. After receiving the signal, the transfer device can transfer the workpiece from the heating device to the quenching device, so that quenching is performed only when the temperature reaches the preheating temperature, which solves the problem of entering the next process before the temperature reaches the requirement, can achieve effective temperature control, ensure the process temperature control of the heat treatment process, and thus improve the workpiece processing quality.

[0036] 2. The method of the present application determines the heating process of the workpiece by setting the preheating time, determines the final temperature of the workpiece by setting the preheating temperature, and then determines the lower limit value by setting the suppression temperature interval to ensure the basis for judging the execution of the process. By comparing the actual temperature detected with the lower limit value of the suppression temperature interval, the heating method of the workpiece can be adjusted. First, heating is performed at a first heating rate. When the actual temperature does not reach the lower limit value, it means that the first stage of the heating process has not reached the required heating temperature according to time or beat, and the workpiece continues to be heated to ensure that the temperature can be raised to close to the preheating temperature. When the actual temperature reaches the lower limit value, it means that the heating process The first heating rate stage is over, and the second heating rate is used for heating. The workpiece continues to slowly follow the heating device 110 to heat up until the temperature of the workpiece reaches the preheating temperature, and then the heating device 110 is turned on to proceed to the next process. Since the above-mentioned temperature detection and triggering temperature control adjustment method are added on the basis of the original time or beat heat treatment process, various process heating parameters are controlled and adjustable, ensuring that the heating temperature reaches the predetermined temperature, ensuring that the temperature of the second stage of the heating process can be maintained for a sufficient time requirement, realizing effective heat treatment temperature control, improving temperature reliability, and being able to more accurately control the workpiece temperature to meet the process requirements of heat treatment, thereby improving the workpiece processing quality.

[0037] 3. The method of the present application, by placing the workpiece in a low-temperature heating device for heating, detecting the temperature and making a judgment, the workpiece can be heated to the set first heating temperature and then quenched; by placing the workpiece in a medium-temperature heating device for heating, detecting the temperature and making a judgment, the workpiece can be heated to the set second heating temperature and then quenched; by placing the workpiece in a high-temperature heating device for heating, detecting the temperature and making a judgment, the workpiece can be heated to the set third heating temperature and then quenched or annealed. After the above three heating processes, the entire heat treatment process of the workpiece can be divided into three sequential processes, which can eliminate human factors, avoid the uncertainty of manual operation, make various test parameters controllable and adjustable, improve the reliability of test data, and cooperate with each other to ensure that the heat treatment of the workpiece meets production requirements.

[0038] 4. The readable storage medium of the present application can execute the heat treatment method through a computer program, and then complete the heating of the workpiece and the adjustment of the heating method, as well as the motion control of the transfer device during the heat treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other embodiments and drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A schematic top view of an embodiment of a heat treatment system of the present invention is shown;

[0041] Figure 2 A temperature-time relationship diagram of the temperature control setting of the existing heat treatment system is shown;

[0042] Figure 3 A temperature and time relationship diagram of the temperature control setting of the heat treatment system of the present invention is shown;

[0043] Figure 4 A schematic diagram showing the steps of an embodiment of a heat treatment method of a heat treatment system of the present invention is shown;

[0044] Figure numerals: 100, heat treatment system; 110, heating device; 111, low-temperature heating device; 112, medium-temperature heating device; 113, high-temperature heating device; 120, quenching device; 121, first quenching tank; 122, second quenching tank; 130, transfer device; 140, air cooling device; 150, protective atmosphere device. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0050] Please refer to Figure 1In a first aspect of the present application, a heat treatment system 100 is provided, which includes a quenching device 120, a heating device 110, a transfer device 130 and a heat treatment controller. The quenching device 120 is used to quench the heated workpiece. The quenching device 120 uses a quenching tank, a quenching pool or other existing equipment that can be used for quenching. The quenching tank is such as a water tank or an oil tank. The quenching tank is a rectangular parallelepiped structure with a trough shape as a whole. The quenching tank is provided with a temperature sensor, a stirring shaft, and a resistance wire. For example, a temperature sensor is provided inside the quenching tank and a resistance wire is installed on the tank wall. The motor is fixed, and the stirring shaft is the output part of the stirrer, and the stirring shaft is connected to the output end of the motor, such as a key connection, so that the quenching tank can be stirred, the temperature sensor can detect the temperature in the quenching tank and feed back the temperature to the terminal display, the resistance wire is also placed in the quenching tank, the resistance wire is electrically connected to the outside, and the medium temperature in the quenching tank can be supplemented by heating through the resistance wire. The quenching tank can also adjust the liquid level. The quenching tank is connected to a pipeline for medium inlet and outlet, and the liquid level of the quenching tank is adjusted by flow adjustment or opening and closing adjustment of the inlet and outlet pipelines. The heat treatment controller may adopt a controller with a temperature control program, such as an editable controller, a CPU, etc., which is electrically connected to the temperature detector to receive the workpiece temperature feedback from the temperature detector, adjust the heating method of the heating element, and control the action of the transfer device. The heat treatment controller may be an independent controller that can independently control the heating device 110 and the transfer device 130. The heat treatment controller may also be a module built into the heating device 110. By executing the program, it can adjust the heating method of the heating device 110 and send a control signal to the transfer device 130 to enable the transfer device 130 to operate the workpiece.

[0051] The heating device 110 is used to heat the workpiece. The heating device 110 can be a heating furnace, a heating box or other heating equipment. The heating device 110 is separated from the quenching device 120. After the workpiece is heated, the workpiece needs to be taken out of the heating device 110 and then put into the quenching device 120. The heating device 110 is provided with a temperature detector and a heating element. The heating element is used to heat the workpiece. The heating element adopts a heating wire, such as a resistance wire. The heating element can be electrically connected to the outside to heat the corresponding heating chambers through the heating wire. A door is provided at the opening of the heating box. The door is connected to a lifting mechanism, such as an electric cylinder. The door can be opened and closed by the electric cylinder control. For example, the edge of the door is fixed to the output end of the electric cylinder by screws. The electric cylinder can adjust the opening and closing state of the door relative to the heating box by telescoping the output end, thereby completing the switch operation and realizing rapid door opening. The temperature detector uses a temperature sensor, and other devices capable of detecting temperature, such as an electronic thermometer, etc. The temperature detector is placed in the heating device 110. The temperature detector is used to detect the temperature of the workpiece in the heating device 110 and feed back the actual temperature data to the heat treatment controller. The heat treatment controller is a program built into the terminal that performs temperature control. It can adjust the heating method of the heating element by adjusting the current. The heat treatment controller is used to adjust the heating method of the heating element. The heating method is like an existing heating furnace or heating box, and the heating rate, heating time, heating temperature limit, etc. can be adjusted, such as making the temperature in the heating device 110 rise at a set heating rate, such as keeping the temperature in the heating device 110 within a certain range.

[0052] The transfer device 130 is used to receive the signal from the heat treatment controller, and after the detected workpiece temperature reaches the set preheating temperature, the workpiece is transferred from the heating device 110 to the quenching device 120; the transfer device 130 runs automatically, and the transfer device 130 has a built-in automatic running program. After receiving the start signal of the heating device 110, it enters the heating chamber of the heating device 110 to take out the workpiece and transfer it to the quenching device 120. The transfer device 130 can use a robot or other equipment that can perform pick-and-place operations. The robot can grab or release the workpiece. The running trajectory of the robot after grabbing the workpiece is from the heating device 110 to the quenching device 120. The transfer device 130 can realize the automated transfer operation from the low-temperature heating device 111 to the quenching device 120, from the medium-temperature heating device 112 to the quenching device 120, or from the high-temperature heating device 113 to the quenching device 120.

[0053] Please refer to Figure 2, the heat treatment systems of the prior art are mostly produced by time beat control, but after the heating process is executed according to the time, the temperature often does not reach the requirement before entering the next process, which affects the temperature control and effect of the heat treatment. However, the present application no longer uses time or beat for production, but is realized by signal transmission between the heating device 110 and the transfer device 130. Specifically, the temperature of the heating device 110 is detected by a temperature detector, and the obtained temperature is used as a basis and fed back to the heat treatment controller for judgment, so that the heating method is adjusted by the heat treatment controller, so that the heating element can be heated in different ways, and the temperature change can be better regulated. After receiving the signal, the transfer device 130 can transfer the workpiece from the heating device 110 to the quenching device 120, so that the quenching is performed only when the temperature reaches the preheating temperature, which solves the problem of entering the next process before the temperature reaches the requirement, and can achieve effective temperature control, ensure the process temperature control of the heat treatment process, and thus improve the workpiece processing quality.

[0054] In an optional embodiment, when the heat treatment controller adjusts the heating mode of the heating element, the heating device 110 maintains the set heating rate for heating and keeps the temperature within a certain temperature range. The heat treatment controller can select the heating mode according to the temperature inside the heating device 110 or the temperature of the workpiece, thereby regulating the temperature change. Specifically:

[0055] The heat treatment controller controls the heating element to enter the preheating section and starts timing. The starting point of entering the preheating section is the timing zero point. The preheating section heats the workpiece. The heating rate of the heating device 110 can be set during heating to make the workpiece temperature rise at a certain rate. Before this process, the parameters of the heating device 110 can be set, such as setting the preheating time, preheating temperature, and suppression temperature range, and then the heating device 110 is started to heat the workpiece. Then the workpiece temperature is detected, and the actual temperature T of the workpiece after reaching the set preheating time t0 is detected. i , the actual temperature T i The lower limit value T of the set suppression temperature range min Compare; if T i Less than T min , the heating element is controlled to continue heating, and the heating method at this time is that the heating device 110 heats at the first heating rate; if T i Greater than or equal to T min , the heating element is controlled to enter the heat preservation working section. The heat preservation working section is that the heating device 110 is heat-insulating in the suppression temperature range. The heating method at this time is that the heating device 110 heats at the second heating rate, heats the workpiece in the set suppression temperature range, and continues to detect the actual temperature T of the workpiece. i , when T iWhen T is equal to, the heating is stopped. In the actual process, there may be a time difference in detection. As long as T is detected at the first time, i When T is exceeded, the heating element is controlled to stop heating. The first heating rate and the second heating rate are not constant, but gradually decrease with time.

[0056] In an optional embodiment, the heating device 110 also has an input interface, or the heat treatment controller can receive terminal input data, such as inputting corresponding data through an input box on a touch screen interface, so as to set the preheating time, preheating temperature, inhibition temperature range and inhibition value. The preheating time refers to the time it takes for the heating device 110 to heat the workpiece to the preheating temperature. The heating of the workpiece by time and beat control is also regulated by the preheating time. In fact, after the workpiece temperature continues to be heated, the time to reach the set preheating temperature is as follows Figure 2 Compared with the ones with longer preheating time, the temperature-time line is in an arc-shaped bending state. When heated to a temperature close to the preheating temperature, the rate of temperature rise decreases. After setting the preheating time and preheating temperature, the initial heating rate is determined. Before the temperature rises close to the preheating temperature, the heating rate of the workpiece decreases and gradually approaches the preheating temperature. The preheating temperature is the optimal process temperature under the workpiece quality requirements. The preheating temperature can ensure that the process requirements are met. By suppressing the temperature range, the final workpiece temperature can be maintained within the range of the suppression temperature range. The suppression value is a temperature setting value to prevent the workpiece temperature from rising too quickly or even exceeding the preheating temperature. Through the suppression value, a program to suppress the temperature rise of the workpiece in advance can be added to the heat treatment controller so that the workpiece can be slowly heated to the preheating temperature.

[0057] In an optional embodiment, the inhibition temperature interval is set to [T min , T max ], set the lower limit value T of the suppression temperature range min =T-ΔT, the upper limit of the temperature range is suppressed max =T+ΔT, where ΔT is the set suppression value. In actual operation, the parameters of the heating device 110 are set first, and the suppression value, preheating time and preheating temperature are set. The suppression value is the temperature entering the heat preservation working section, which is less than and close to the preheating temperature. The suppression temperature interval is the heat preservation interval with the above lower limit as the lower limit, and the upper limit can also be determined. In an optional embodiment, the temperature of the workpiece is continuously detected by a temperature detector. When T i When it is greater than or equal to the set preheating temperature T, the heat treatment controller sends a signal to the transfer device 130, so that the transfer device 130 takes the workpiece out of the heating device 110 and transfers it to the quenching device 120. For example, a signal is sent to a robot, and the robot takes out the workpiece and places it into the quenching device 120 through a pre-set path operation.

[0058] In an optional embodiment, the heating device 110 includes a low-temperature heating device 111, a medium-temperature heating device 112, and a high-temperature heating device 113, which are used to heat the workpiece to a preheating temperature T1, a preheating temperature T2, and a preheating temperature T3, respectively. The preheating temperature T1 is less than the preheating temperature T2, and the preheating temperature T2 is less than the preheating temperature T3. The low-temperature heating device 111, the medium-temperature heating device 112, and the high-temperature heating device 113 are respectively spaced from the quenching device 120, so that there is a certain transfer space from the heating device 110 to the quenching tank; the low-temperature heating device 111, the medium-temperature heating device 112, and the high-temperature heating device 113 are respectively heated furnaces, and heating boxes can also be used, which have a heating cavity for accommodating the workpiece. For example, the low-temperature heating device 111, the medium-temperature heating device 112, and the high-temperature heating device 113 are respectively heated boxes. The workpiece can be heated at three different temperatures by means of the low-temperature heating device 111 , the medium-temperature heating device 112 and the high-temperature heating device 113 , and the heat treatment process is divided into three stages, which can strengthen the temperature control of each process stage.

[0059] In an optional embodiment, the heat treatment system 100 further includes an air cooling device 140, which is placed next to the low-temperature heating device 111, the medium-temperature heating device 112 or the high-temperature heating device 113, and is used to cool the workpiece after a certain heating process is completed. For example, the air cooling device 140 is fixed next to the quenching device 120, and the air cooling device 140 uses a fan, and other cooling devices can also be used. The fan can use a variable frequency fan, and the cooling rate of the workpiece can be adjusted continuously through the variable frequency working mode. A temperature detector, such as an electronic thermometer, is also provided at the air cooling device 140, which can detect the cooling of the workpiece, so that a cooling rate curve can be formed for analysis and research. In an optional embodiment, the heat treatment system 100 also includes a feed table, which is used to transport the workpiece, such as a conveyor belt or other devices with a conveying function, which can deliver the workpiece into the operating range of the transfer device 130, such as a manipulator that can grab the workpiece from the feed table and put it into the heating device 110.

[0060] In an optional embodiment, the heat treatment system 100 also includes a protective atmosphere device 150, which is used to provide protective gas. The protective atmosphere device 150 is connected to the low-temperature heating device 111, the medium-temperature heating device 112, the high-temperature heating device 113, the quenching device 120 and the air cooling device 140. The protective atmosphere device 150 includes a generator or gas source for providing protective gas, and a pipeline. One end of the pipeline is connected and connected to the generator or gas source, and the other end is connected and connected to the low-temperature heating device 111, the medium-temperature heating device 112 and the high-temperature heating device 113, such as being connected to the side wall of the heating box and connected to the heating chamber. The quenching device 120 is also connected and connected to the generator or gas source of protective gas, such as using a pipeline to connect the quenching tank, so that the low-temperature heating device 111, the medium-temperature heating device 112, the high-temperature heating device 113 and the quenching device 120 can be provided with protective gas and automatically replenished to ensure a protective atmosphere to meet the workpiece processing requirements. A flow regulating valve can also be set on the pipeline to adjust the flow of the protective gas.

[0061] In an optional embodiment, the quenching device 120 includes a first quenching tank 121 and a second quenching tank 122. The first quenching tank 121 is located between the low-temperature heating device 111 and the high-temperature heating device 113, and is arranged at intervals. The second quenching tank 122 is located between the medium-temperature heating device 112 and the high-temperature heating device 113, and is also arranged at intervals. The low-temperature heating device 111, the medium-temperature heating device 112 and the high-temperature heating device 113 are arranged in a triangle, and the low-temperature heating device 111 and the high-temperature heating device 113 are respectively located on both sides of the medium-temperature heating device 112; the above-mentioned first quenching tank 121 is a water tank, and the second quenching tank 122 is an oil tank. When low-temperature heating is performed, a water tank is used for quenching. When medium-temperature heating is performed, a water tank or an oil tank is used for quenching. When high-temperature heating is performed, a water tank or an oil tank is used for quenching. The air cooling device 140 can also be directly used for annealing.

[0062] In an optional embodiment, the heating range of the workpiece by the low-temperature heating device 111 is [20°C, 650°C], and the temperature uniformity of the low-temperature heating device 111 is less than or equal to ±5°C; the heating range of the workpiece by the medium-temperature heating device 112 is [400°C, 850°C], and the temperature uniformity of the medium-temperature heating device 112 is less than or equal to ±6°C; the heating range of the workpiece by the high-temperature heating device 113 is (850°C, 1400°C], and the temperature uniformity of the high-temperature heating device 113 is less than or equal to ±7°C; by setting three heating devices 110 with different temperatures, the workpiece can be heated with three different temperature gradients, and the temperature can be adjusted more accurately.

[0063] In a second aspect of the present application, a heat treatment method is provided, which uses the above-mentioned heat treatment system 100. The heat treatment method includes heating the workpiece and quenching after the heating is completed, specifically including:

[0064] The heat treatment controller controls the heating element to heat the workpiece at the first heating rate and starts timing. The zero point of timing enters the preheating working section. The temperature of the workpiece is detected by the temperature detector. The actual temperature T of the workpiece after reaching the set preheating time t0 is detected. i The actual temperature detected is fed back to the heat treatment controller, which compares the temperature. i The lower limit value T of the set suppression temperature range min Compare: If T i Less than T min , continue to heat the workpiece; if T i Greater than or equal to T min , the heat treatment controller controls the heating element to heat the workpiece at the second heating rate, and continues to detect the actual temperature T of the workpiece. i , where T is greater than T min , the first heating rate is greater than the second heating rate, and the first heating rate and the second heating rate gradually decrease over time.

[0065] When T i When it is equal to T, it is detected that the actual temperature reaches the preheating temperature and the next process can be carried out. The heat treatment controller transmits a signal to the controller of the heating device 110 or the controller of the door, and then automatically opens the door of the heating device 110. At the same time, the signal is also transmitted to the transfer device 130. The heat treatment controller controls the transfer device 130 to take out the workpiece, and then put the workpiece into the quenching device 120 for quenching. For example, the robot first extends into the heating device 110, grabs the workpiece, and then takes it out and puts it into the quenching device 120. The entire movement path is preset to ensure that the robot can operate smoothly; it can also be taken out manually and then put into the quenching device 120.

[0066] Through the above steps, the temperature of the workpiece can be precisely controlled. On the basis of the heat treatment controller heating according to the preheating time, a temperature control method is added to automatically give the heat treatment controller a temperature rise inhibition effect on the adjusted temperature. The temperature control method is executed according to the above S2, which is equivalent to adding a temperature rise inhibition adjustment function and a temperature interval inhibition window to the heat treatment controller. When the temperature in the heating device 110 reaches the lower limit of the preheating temperature interval, the heat treatment controller is executed according to the above temperature adjustment method. When the heat treatment controller runs to the judgment of the actual temperature, it mainly considers whether the actual temperature reaches the preheating temperature. If the trigger condition is not reached, no signal is sent to the transfer device 130. In this way, the heating device 110 and the transfer device 130 are precisely matched to avoid errors. If steps S1-S3 are used to perform high-temperature sintering on a solid electrolyte, the heating process flow is: heating to 1200°C at 3°C / min, keeping warm for 16h, and then cooling to 150°C.

[0067] Please refer to Figure 2 , since the heat treatment system 100 of the prior art has begun to use automated heat treatment, the process is automatically carried out, first heating, then keeping warm and finally cooling down. Generally, the automatic program is triggered to start by time or beat. As shown in the figure, a is the temperature control diagram of the temperature set by the program over time, and d is the theoretical temperature holding time interval. The problem with such control is that when it is necessary to control the heating or cooling stage, if time is used for control, the time needs to be estimated, and it cannot be accurately controlled. When the process is completed, the temperature does not meet the requirements. If the furnace temperature does not reach the set temperature value within the specified time, the heating furnace will continue to heat the workpiece in the next process stage, and the time required for the next process stage will be shortened accordingly, and the actual set holding time will not be reached. In this way, under the automatic program, the temperature will not meet the process requirements and the next process will be triggered by mistake.

[0068] Please refer to Figure 3 , b is the actual temperature of the workpiece in the heating device 110 that changes with time, c is the time point when the workpiece enters the temperature maintenance, and in this application it is also the intersection point when the actual temperature reaches the preheating temperature-suppression value, d is the suppression temperature interval, e is the theoretical temperature maintenance time interval, f is the actual time interval of the workpiece temperature maintenance in this application, time 1 is the preheating time, and time 2 is the time when the workpiece needs to be taken out to enter the next process. The present application determines the heating process of the workpiece by setting the preheating time, and determines the final temperature of the workpiece by setting the preheating temperature, and then determines the lower limit value by setting the suppression temperature interval to ensure the basis for judging the execution of the process. By comparing the actual temperature detected with the lower limit value of the suppression temperature interval, the heating method of the workpiece can be adjusted. First, heating is performed at the first heating rate. When the actual temperature does not reach the lower limit value, it means that the first stage of the heating process has not reached the required heating temperature according to time or beat, and then the workpiece continues to be heated to ensure that the temperature can be raised to close to the preheating temperature. When the actual temperature reaches the lower limit value, it means that the first heating process The heating rate stage is over, and the second heating rate is used for heating. The workpiece continues to slowly follow the heating device 110 to heat up until the temperature of the workpiece reaches the preheating temperature, and then the heating device 110 is turned on to proceed to the next process. Since the above-mentioned temperature detection and triggering temperature control adjustment method are added on the basis of the original time or beat heat treatment process, various process heating parameters are controlled and adjustable, ensuring that the heating temperature reaches the predetermined temperature, ensuring that the temperature of the second stage of the heating process can be maintained for a sufficient time requirement, realizing effective heat treatment temperature control, improving temperature reliability, and being able to more accurately control the workpiece temperature to meet the process requirements of heat treatment, thereby improving the workpiece processing quality.

[0069] In an optional embodiment, when the temperature of the workpiece is detected by a temperature detector, the detection can be performed periodically or in real time. The temperature of the workpiece can also be detected in real time after the preheating time is reached. The temperature detector feeds back the actual temperature to the heat treatment controller, and the heat treatment controller works to compare the actual temperature with the preheating temperature, specifically, the actual temperature is compared with the lower limit value of the suppression temperature interval. When the actual temperature reaches the lower limit value of the suppression temperature interval, the heat treatment controller controls the heating element to heat in a heat preservation manner, and the temperature in the heating device 110 is maintained in the suppression temperature interval by the heating element. The suppression temperature interval is an interval value above and below the preheating temperature. The above temperature is maintained to slowly increase the temperature of the workpiece to the preheating temperature. When the temperature detector detects that the temperature of the workpiece reaches the preheating temperature, it triggers the start signal of the heating device 110, and the door of the heating device 110 opens automatically, and the workpiece preparation for the next process is completed.

[0070] In an optional embodiment, heating the workpiece at a second heating rate includes: placing the workpiece in a heat preservation environment, wherein the temperature range of the heat preservation environment is [T min ,T max ]. Before the actual temperature reaches the lower limit of the preheating temperature interval, the heating device 110 heats the workpiece, that is, the heat treatment controller sends a heating signal, and the heating element performs a heating operation. The lower limit T min =T-ΔT; When the actual temperature reaches the lower limit of the preheating temperature range, the heating device 110 keeps the workpiece warm, that is, the heat treatment controller sends a heat preservation signal, and the heating element performs a heat preservation operation. The above heating and heat preservation are conventional temperature control methods of the heating element. The above process is implemented by first setting the suppression value, determining a temperature value before approaching the preheating temperature, and the preheating temperature minus the suppression value is the lower limit of the suppression temperature range. According to the heat preservation method, the upper limit of the suppression temperature range is the preheating temperature plus the suppression value, T max =T+ΔT, where ΔT is the set inhibition value. Entering the heat preservation working section means increasing the inhibition value during the heating process. After the temperature of the workpiece rises, the final value of the temperature rise is limited. The heating element can only heat the temperature in the heating device 110 to near the preheating temperature, so that the final value range of the heating temperature of the heating device 110 is [preheating temperature-inhibition value, preheating temperature+inhibition value]. In an optional embodiment, when the actual temperature reaches the lower limit of the inhibition temperature range, the heat treatment controller determines whether the actual temperature is equal to the preheating temperature, that is, the program of the heat treatment controller is executed to the latter stage, and the actual temperature of the workpiece is close to the preheating temperature. The actual temperature is compared with the preheating temperature. If they are equal, the signal to open the heating device 110 is triggered, and then the workpiece is removed and the quenching process is executed.

[0071] In an optional embodiment, when the workpiece is quenched by the quenching device 120, the quenching medium in the quenching device 120 is compensated for heating, and the temperature of the compensatory heating is less than or equal to 150°C, so that the temperature rise of the workpiece is less than or equal to 15°C. The quenching device 120 can use a quenching tank, which is a rectangular structure and is trough-shaped as a whole. It has a temperature sensor, a stirring shaft, a heating wire, and can adjust the liquid level. The effective capacity of the quenching tank is 1-1.5m 3 The temperature sensor can detect the temperature in the quenching tank. The stirring shaft, such as the output part of the stirrer, stirs the water or oil in the quenching tank through the stirring shaft to avoid excessive local temperature. The quenching tank is heated by the heating wire to achieve temperature compensation. The above-mentioned compensation heating method includes two methods. One is that the heating wire used for compensation heating is part of the quenching device 120. The heating wire is in the quenching medium, and its end is fixed to the inner wall of the quenching device 120, such as embedded fixation, and other conventional fixing methods can also be used. The water or oil is heated by the heating wire, and the temperature of the water or oil is used to assist in heating the workpiece; the other is to use an external heating method. The heating device used for auxiliary heating is independent of the quenching device 120. The heating device is an existing electric heating element, such as an electric heating rod, an electric heating tube, etc. It only needs to be placed in the quenching water tank or oil tank, and the water or oil is heated by the external heating device, thereby indirectly achieving compensation heating for the workpiece.

[0072] Please refer to Figure 4 In a third aspect of the present application, a method for heat treatment of a workpiece is provided, which adopts the above-mentioned heat treatment system 100. The method is a process performed on the workpiece. Since the heating device 110 includes three: a low-temperature heating device 111, a medium-temperature heating device 112 and a high-temperature heating device 113, such as a low-temperature heating box, a medium-temperature heating box and a high-temperature heating box, respectively, a low-temperature furnace, a medium-temperature furnace, a high-temperature furnace, etc. can also be used. The method also includes three processes. The specific heat treatment method includes:

[0073] S1. Place the workpiece in the low-temperature heating device 111 for heating. Use the temperature detection module to detect the real-time temperature of the workpiece, and use the heat treatment controller to make a judgment. When the actual temperature T of the workpiece is i When the set preheating temperature T1 is reached, such as 50°C, the heat treatment controller controls the transfer device 130 to take out the workpiece and transfer it to the quenching device 120 for quenching; by placing the workpiece in the low-temperature heating device 111 for heating, detecting the temperature and making a judgment, the workpiece can be heated to the set first heating temperature and then quenched.

[0074] S2. The workpiece is transferred into the medium-temperature heating device 112 for heating. The real-time temperature of the workpiece is detected by the temperature detection module, and the judgment is performed by the heat treatment controller. When Ti reaches the set preheating temperature T2, such as 500°C, the workpiece is taken out and transferred into the quenching device 120 for quenching. By placing the workpiece in the medium-temperature heating device 112 for heating, detecting the temperature and making a judgment, the workpiece can be heated to the set second heating temperature and then quenched.

[0075] S3, transfer the workpiece into the high temperature heating device 113 for heating, detect the real-time temperature of the workpiece through the temperature detection module, and make a judgment through the heat treatment controller, and wait for T i When the set preheating temperature T3 is reached, such as 1000°C, the workpiece is taken out and transferred to the quenching device 120 for quenching, or transferred to the air cooling device 140 for annealing; by placing the workpiece in the high-temperature heating device 113 for heating, detecting the temperature and making a judgment, the workpiece can be heated to the set third heating temperature, and then quenching or annealing is performed.

[0076] The above heat treatment method is specifically as follows according to the process: calling and adjusting the heat treatment controller - loading the heat treatment controller - heating device 110 heats up - triggering the transfer device 130 (robot) to load - the transfer device 130 (robot) automatically moves to the loading position - (or manual loading) - the low-temperature heating device 111 starts working - the temperature reaches the set value - the door of the low-temperature heating device 111 opens - the robot automatically loads - the door of the medium-temperature heating device 112 closes - the heating time reaches the set value - the door of the medium-temperature heating device 112 opens - the transfer device 130 automatically takes the material and transfers - automatic quenching - the quenching time reaches the set value - the door of the high-temperature heating device 113 opens - the transfer device 130 automatically puts the workpiece in for tempering - the door of the high-temperature heating device 113 closes - the tempering time reaches the set value - the door of the high-temperature heating device 113 opens - the transfer device 130 automatically takes the material and moves it to the air cooling device 140 - the air cooling device 140 opens - the air cooling time reaches the set value - the transfer device 130 returns to the initial position - completed. Through the above process, the entire heat treatment process of the workpiece can be divided into three heating and quenching steps with a sequence, which can eliminate human factors, avoid the uncertainty of manual operation, make various test parameters controllable and adjustable, improve the reliability of test data, and coordinate with each other to ensure that the heat treatment of the workpiece meets production requirements.

[0077] The present application can be applied to the development of heat treatment processes for various materials, including steel, aluminum, magnesium alloys, etc. The heat treatment processes involved include normalizing, tempering, annealing, solution aging, temperature controlled cooling and other processes, realizing a combination of various processes; and equipped with a protective atmosphere, capable of realizing heat treatment processes with special requirements, the above-mentioned components can be arranged in one area and side walls or baffles can be arranged, thus forming a heat treatment working area, such as Figure 1 As shown in . This solution can avoid the uncertainty errors caused by traditional manual operation, and can also avoid the problem of temperature not meeting the requirements caused by the use of time or beat production triggering process conditions in automatic program control. The heating device 110, the quenching device 120 and the transfer device 130 can be effectively coordinated to make various test parameters controlled and adjustable, and the heated workpiece can meet the process requirements to improve the reliability of the test data; at the same time, it can also avoid safety problems caused by operation. The compatibility of the heat treatment system 100 and automatic control is achieved, which can meet the requirements of the diversity of experimental schemes. All parameters of the heat treatment process can be controlled and adjusted. It focuses on tracking the process parameters in the experiment, which is conducive to the comparative analysis of later experimental data. It can effectively improve the accuracy of the heat treatment process experiment to obtain more accurate experimental data, which is beneficial to the development of new materials and new processes.

[0078] In an optional embodiment, the time for taking out the workpiece from the heating device 110 and transferring it to the quenching device 120 is less than or equal to 10 seconds respectively, and the time for the high temperature heating device 113 to the quenching device 120 is less than or equal to 16 seconds. The quenching device 120 includes a water tank and an oil tank. When heating at a low temperature, the water tank is used for quenching, when heating at a medium temperature, the water tank or the oil tank is used for quenching, and when heating at a high temperature, the water tank or the oil tank is used for quenching. The time for taking out the workpiece from the high temperature heating device 113 and transferring it to the water tank or the oil tank by the transfer device 130 is ≤16 seconds, the time for taking out the workpiece from the medium temperature heating device 112 and transferring it to the water tank or the oil tank is ≤10 seconds, and the time for taking out the workpiece from the low temperature heating device 111 and transferring it to the water tank is ≤10 seconds, and the transfer speed of the workpiece by the transfer device 130 can be adjusted.

[0079] In an optional embodiment, the heating temperature range of the low temperature heating device 111 is [20°C, 650°C], such as 20°C, 60°C, 100°C, 150°C, 200°C, 260°C, 300°C, 350°C, 400°C, 450°C, 500°C, 600°C or 650°C, the temperature uniformity of the low temperature heating device 111 is less than or equal to ±5°C, and the door opening time of the low temperature heating device 111 is ≤6 seconds. In an optional embodiment, the heating temperature range of the medium temperature heating device 112 is [400°C, 850°C], such as 400°C, 450°C, 500°C, 550°C, 600°C, 650°C, 700°C, 750°C, 800°C or 850°C, the temperature uniformity of the medium temperature heating device 112 is less than or equal to ±6°C, and the door opening time of the medium temperature heating device 112 is ≤6 seconds. In an optional embodiment, the heating temperature range of the high temperature heating device 113 is (850°C, 1400°C], such as 851°C, 900°C, 950°C, 1000°C, 1050°C, 1100°C, 1150°C, 1200°C, 1250°C, 1300°C, 1350°C or 1400°C, the temperature uniformity of the high temperature heating device 113 is less than or equal to ±7°C, and the door opening time of the high temperature heating device 113 is ≤12 seconds.

[0080] In an optional embodiment, in addition to the above-mentioned process, the heat treatment method can realize a free combination of process such as normalizing, tempering, annealing, solution aging, temperature controlled cooling, etc., which can meet the experimental scenario application of various materials and processes; the heat treatment system 100 has a variety of adjustable parameters in each process and its device, which increases the adjustability of various laboratory experimental parameters and experimental schemes, and the flexibility is greatly improved compared with the traditional laboratory heat treatment system 100.

[0081] In a third aspect of the present application, a readable storage medium is provided, which includes a stored computer program, wherein when the computer program is running, the device where the readable storage medium is located is controlled to perform the above-mentioned heat treatment method. The readable storage medium can be used to implement each step or combination of steps of the process of the above-mentioned heat treatment method by computer program instructions. These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are performed on the computer or other programmable device to produce computer-implemented processing, so that the instructions executed on the computer or other programmable device provide for implementing each step of the heat treatment method. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to perform temperature control of the heating device 110, send an operating signal of the transfer device, and realize the adjustment of the heating method and the action control of the transfer device 130.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "optional example" or "optional implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0083] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0084] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat treatment system, characterized in that: include: A quenching device (120), used for quenching the heated workpiece; A heating device (110) is used to heat a workpiece, the heating device (110) is spaced apart from the quenching device (120), a temperature detector and a heating element are provided in the heating device (110), the heating element is used to heat the workpiece, and the temperature detector is used to detect the temperature of the workpiece; A transfer device (130) is used to transfer the workpiece from the heating device (110) to the quenching device (120) after the detected workpiece temperature reaches a set preheating temperature; The heat treatment controller is electrically connected to the temperature detector and is used to receive the workpiece temperature fed back by the temperature detector, adjust the heating mode of the heating element, and control the operation of the transfer device (130).

2. The heat treatment system according to claim 1, characterized in that: The heating mode of the heating element is adjusted, specifically including: Controlling the heating element to enter the preheating working section and start timing to heat the workpiece; Detect the actual temperature T of the workpiece after reaching the set preheating time t0 i , the actual temperature Ti is compared with the lower limit value T of the set suppression temperature range min Compare; if T i Less than T min , control the heating element to continue heating; if T i Greater than or equal to T min , the heating element is controlled to enter the heat preservation working section, heat the workpiece within the set suppression temperature range, and continue to detect the actual temperature T of the workpiece. i , in T i When the temperature is greater than or equal to the set preheating temperature T, the heating element is controlled to end heating.

3. The heat treatment system according to claim 2, characterized in that: The set inhibition temperature range is [T min , T max ], the lower limit value T of the set inhibition temperature range min =T-ΔT, the upper limit value of the inhibition temperature range T max =T+ΔT, where ΔT is the set suppression value.

4. The heat treatment system according to claim 2, characterized in that: The control of the transfer device (130) specifically includes: when the T i When it is greater than or equal to T, the heat treatment controller controls the transfer device (130) to operate.

5. The heat treatment system according to any one of claims 1 to 4, characterized in that: The heating device (110) comprises a low-temperature heating device (111), a medium-temperature heating device (112) and a high-temperature heating device (113), which are respectively used to heat the workpiece to a preheating temperature T1, a preheating temperature T2 and a preheating temperature T3, wherein the preheating temperature T1 is lower than the preheating temperature T2, and the preheating temperature T2 is lower than the preheating temperature T3, and the low-temperature heating device (111), the medium-temperature heating device (112) and the high-temperature heating device (113) are respectively spaced apart from the quenching device (120).

6. The heat treatment system according to claim 5, characterized in that: It also includes an air cooling device (140) disposed next to the low-temperature heating device (111), the medium-temperature heating device (112) or the high-temperature heating device (113) and used to cool the workpiece.

7. The heat treatment system according to claim 6, characterized in that: It also includes a protective atmosphere device (150) for providing protective gas, and the protective atmosphere device (150) is connected to the low-temperature heating device (111), the medium-temperature heating device (112), the high-temperature heating device (113), the quenching device (120) and the air cooling device (140).

8. The heat treatment system according to claim 6, characterized in that: The quenching device (120) comprises a first quenching tank (121) and a second quenching tank (122); the first quenching tank (121) is located between the low-temperature heating device (111) and the high-temperature heating device (113); the second quenching tank (122) is located between the medium-temperature heating device (112) and the high-temperature heating device (113); the low-temperature heating device (111), the medium-temperature heating device (112) and the high-temperature heating device (113) are arranged in a triangle; the low-temperature heating device (111) and the high-temperature heating device are respectively located on both sides of the medium-temperature heating device (112).

9. The heat treatment system according to claim 6, characterized in that: The heating temperature range of the low-temperature heating device (111) is [20°C, 650°C], and the temperature uniformity of the low-temperature heating device (111) is less than or equal to ±5°C.

10. The heat treatment system according to claim 6, characterized in that: The heating temperature range of the medium-temperature heating device (112) is [400° C., 850° C.], and the temperature uniformity of the medium-temperature heating device (112) is less than or equal to ±6° C.

11. The heat treatment system according to claim 6, characterized in that: The heating temperature range of the high temperature heating device (113) is (850°C, 1400°C], and the temperature uniformity of the high temperature heating device (113) is less than or equal to ±7°C.

12. A heat treatment method, characterized in that: Using the heat treatment system according to any one of claims 1 to 11, the heat treatment method comprises: The heat treatment controller controls the heating element to heat the workpiece at a first heating rate, and starts timing to detect the actual temperature T of the workpiece after the set preheating time t0 is reached. i , the T i The lower limit value T of the set suppression temperature range min Compare; if T i Less than T min , continue to heat the workpiece; if T i Greater than or equal to T min , the heat treatment controller controls the heating element to heat the workpiece at a second heating rate, wherein T is greater than T min , the first heating rate is greater than the second heating rate, and the first heating rate and the second heating rate gradually decrease over time; When the T i When it is equal to T, the heat treatment controller controls the transfer device to transfer the workpiece to the quenching device for quenching.

13. The heat treatment method according to claim 12, characterized in that: Heating the workpiece at the second heating rate includes: placing the workpiece in a heat preservation environment, wherein the temperature range of the heat preservation environment is [T min ,T max ], T min =T-ΔT,T max =T+ΔT, wherein the ΔT is the set suppression value.

14. The heat treatment method according to claim 12, characterized in that: The workpiece is quenched, comprising: placing the workpiece in the quenching device (120) for quenching, and compensating heating the quenching medium in the quenching device (120), wherein the compensating heating temperature is less than or equal to 150° C., so that the temperature rise of the workpiece is less than or equal to 15° C.

15. A heat treatment method, characterized in that: Using the heat treatment system according to any one of claims 6 to 11, the heat treatment method comprises: The workpiece is placed in the low temperature heating device (111) for heating until the actual temperature T i When the set preheating temperature T1 is reached, the workpiece is taken out by the transfer device (130) and transferred to the quenching device (120) for quenching; The workpiece is transferred into the medium temperature heating device (112) for heating until the T i When the set preheating temperature T2 is reached, the workpiece is taken out by the transfer device (130) and transferred to the quenching device (120) for quenching; The workpiece is transferred into the high temperature heating device (113) for heating until the T i When the set preheating temperature T3 is reached, the workpiece is taken out by the transfer device (130) and transferred to the quenching device (120) for quenching, or transferred to the air cooling device (140) for annealing.

16. The heat treatment method according to claim 15, characterized in that: The time for taking out the workpiece from the low-temperature heating device (111) and the medium-temperature heating device (112) and transferring them to the quenching device (120) is less than or equal to 10 seconds, and the time for taking out the workpiece from the high-temperature heating device (113) and transferring it into the quenching device (120) is less than or equal to 16 seconds.

17. A readable storage medium, characterized in that: It includes a stored computer program, wherein when the computer program is run, the device where the readable storage medium is located is controlled to execute the heat treatment method according to any one of claims 12 to 16.

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